Sunil Mushran [Mon, 7 Jul 2008 17:06:29 +0000 (10:06 -0700)]
[PATCH] ocfs2/dlm: Fixes oops in dlm_new_lockres()
Patch fixes a race that can result in an oops while adding a
lockres to the dlm lockres tracking list.
Bug introduced by mainline commit
29576f8bb54045be944ba809d4fca1ad77c94165.
Signed-off-by: Sunil Mushran <sunil.mushran@oracle.com>
Signed-off-by: Mark Fasheh <mfasheh@suse.com>
Linus Torvalds [Mon, 7 Jul 2008 16:24:28 +0000 (09:24 -0700)]
Merge git://git./linux/kernel/git/davem/net-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6:
can: add sanity checks
fs_enet: restore promiscuous and multicast settings in restart()
ibm_newemac: Fixes entry of short packets
ibm_newemac: Fixes kernel crashes when speed of cable connected changes
pasemi_mac: Access iph->tot_len with correct endianness
ehea: Access iph->tot_len with correct endianness
ehea: fix race condition
ehea: add MODULE_DEVICE_TABLE
ehea: fix might sleep problem
forcedeth: fix lockdep warning on ethtool -s
Add missing skb->dev assignment in Frame Relay RX code
bridge: fix use-after-free in br_cleanup_bridges()
tcp: fix a size_t < 0 comparison in tcp_read_sock
tcp: net/ipv4/tcp.c needs linux/scatterlist.h
libertas: support USB persistence on suspend/resume (resend)
iwlwifi: drop skb silently for Tx request in monitor mode
iwlwifi: fix incorrect 5GHz rates reported in monitor mode
Benjamin Herrenschmidt [Mon, 7 Jul 2008 06:39:50 +0000 (16:39 +1000)]
powerpc: Fix unterminated of_device_id array in legacy_serial.c
A recent patch to legacy_serial.c factored out some code by
using the of_match_node() facility to match a node against
an array of possible matches. However, the patch didn't properly
terminate the array causing potential crashes in cases where no
match is found. In addition, the name of the array was poorly
chosen for a static symbol making debugging harder.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Linus Torvalds [Sun, 6 Jul 2008 23:43:12 +0000 (16:43 -0700)]
vsprintf: add support for '%pS' and '%pF' pointer formats
They print out a pointer in symbolic format, if possible (ie using
symbolic KALLSYMS information). The '%pS' format is for regular direct
pointers (which can point to data or code and that you find on the stack
during backtraces etc), while '%pF' is for C function pointer types.
On most architectures, the two mean exactly the same thing, but some
architectures use an indirect pointer for C function pointers, where the
function pointer points to a function descriptor (which in turn contains
the actual pointer to the code). The '%pF' code automatically does the
appropriate function descriptor dereference on such architectures.
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Linus Torvalds [Sun, 6 Jul 2008 23:24:57 +0000 (16:24 -0700)]
vsprintf: add infrastructure support for extended '%p' specifiers
This expands the kernel '%p' handling with an arbitrary alphanumberic
specifier extension string immediately following the '%p'. Right now
it's just being ignored, but the next commit will start adding some
specific pointer type extensions.
NOTE! The reason the extension is appended to the '%p' is to allow
minimal gcc type checking: gcc will still see the '%p' and will check
that the argument passed in is indeed a pointer, and yet will not
complain about the extended information that gcc doesn't understand
about (on the other hand, it also won't actually check that the pointer
type and the extension are compatible).
Alphanumeric characters were chosen because there is no sane existing
use for a string format with a hex pointer representation immediately
followed by alphanumerics (which is what such a format string would have
traditionally resulted in).
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Linus Torvalds [Sun, 6 Jul 2008 23:16:15 +0000 (16:16 -0700)]
vsprintf: split out '%p' handling logic
The actual code is the same, just split out into a helper function.
This makes it easier to read, and allows for simple future extension
of %p handling.
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Linus Torvalds [Sun, 6 Jul 2008 23:06:25 +0000 (16:06 -0700)]
vsprintf: split out '%s' handling logic
The actual code is the same, just split out into a helper function.
This makes it easier to read, and allows for future sharing of the
string code.
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Linus Torvalds [Sun, 6 Jul 2008 18:16:23 +0000 (11:16 -0700)]
Merge branch 'kvm-updates-2.6.26' of git://git./linux/kernel/git/avi/kvm
* 'kvm-updates-2.6.26' of git://git.kernel.org/pub/scm/linux/kernel/git/avi/kvm:
KVM: IOAPIC: Fix level-triggered irq injection hang
x86: KVM guest: Add memory clobber to hypercalls
Philipp Zabel [Sat, 5 Jul 2008 23:15:34 +0000 (01:15 +0200)]
pxamci: fix byte aligned DMA transfers
The pxa27x DMA controller defaults to 64-bit alignment. This caused
the SCR reads to fail (and, depending on card type, error out) when
card->raw_scr was not aligned on a 8-byte boundary.
For performance reasons all scatter-gather addresses passed to
pxamci_request should be aligned on 8-byte boundaries, but if
this can't be guaranteed, byte aligned DMA transfers in the
have to be enabled in the controller to get correct behaviour.
Signed-off-by: Philipp Zabel <philipp.zabel@gmail.com>
Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Linus Torvalds [Sun, 6 Jul 2008 17:27:25 +0000 (10:27 -0700)]
Revert "USB: don't explicitly reenable root-hub status interrupts"
This reverts commit
e872154921a6b5256a3c412dd69158ac0b135176.
Andrey Borzenkov reports that it resulted in a totally hung machine for
him when loading the OHCI driver. Extensive netconsole capture with
SysRq output shows that modprobe gets stuck in ohci_hub_status_data()
when probing and enabling the OHCI controller, see for example
http://lkml.org/lkml/2008/7/5/236
for an analysis.
The problem appears to be an interrupt flood triggered by the commit
that gets reverted, and Andrey confirmed that the revert makes things
work for him again.
Reported-and-tested-by: Andrey Borzenkov <arvidjaar@mail.ru>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Acked-by: David Brownell <david-b@pacbell.net>
Cc: Greg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Mark McLoughlin [Fri, 4 Jul 2008 17:23:15 +0000 (18:23 +0100)]
KVM: IOAPIC: Fix level-triggered irq injection hang
The "remote_irr" variable is used to indicate an interrupt
which has been received by the LAPIC, but not acked.
In our EOI handler, we unset remote_irr and re-inject the
interrupt if the interrupt line is still asserted.
However, we do not set remote_irr here, leading to a
situation where if kvm_ioapic_set_irq() is called, then we go
ahead and call ioapic_service(). This means that IRR is
re-asserted even though the interrupt is currently in service
(i.e. LAPIC IRR is cleared and ISR/TMR set)
The issue with this is that when the currently executing
interrupt handler finishes and writes LAPIC EOI, then TMR is
unset and EOI sent to the IOAPIC. Since IRR is now asserted,
but TMR is not, then when the second interrupt is handled,
no EOI is sent and if there is any pending interrupt, it is
not re-injected.
This fixes a hang only seen while running mke2fs -j on an
8Gb virtio disk backed by a fully sparse raw file, with
aliguori "avoid fragmented virtio-blk transfers by copying"
changes.
Signed-off-by: Mark McLoughlin <markmc@redhat.com>
Acked-by: Marcelo Tosatti <mtosatti@redhat.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
Anthony Liguori [Thu, 3 Jul 2008 16:02:36 +0000 (19:02 +0300)]
x86: KVM guest: Add memory clobber to hypercalls
Hypercalls can modify arbitrary regions of memory. Make sure to indicate this
in the clobber list. This fixes a hang when using KVM_GUEST kernel built with
GCC 4.3.0.
This was originally spotted and analyzed by Marcelo.
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
Oliver Hartkopp [Sun, 6 Jul 2008 06:38:43 +0000 (23:38 -0700)]
can: add sanity checks
Even though the CAN netlayer only deals with CAN netdevices, the
netlayer interface to the userspace and to the device layer should
perform some sanity checks.
This patch adds several sanity checks that mainly prevent userspace apps
to send broken content into the system that may be misinterpreted by
some other userspace application.
Signed-off-by: Oliver Hartkopp <oliver.hartkopp@volkswagen.de>
Signed-off-by: Urs Thuermann <urs.thuermann@volkswagen.de>
Acked-by: Andre Naujoks <nautsch@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Linus Torvalds [Sat, 5 Jul 2008 22:53:22 +0000 (15:53 -0700)]
Linux 2.6.26-rc9
Andrew Morton [Sat, 5 Jul 2008 08:02:01 +0000 (01:02 -0700)]
Fix pagemap_read() use of struct mm_walk
Fix some issues in pagemap_read noted by Alexey:
- initialize pagemap_walk.mm to "mm" , so the code starts working as
advertised
- initialize ->private to "&pm" so it wouldn't immediately oops in
pagemap_pte_hole()
- unstatic struct pagemap_walk, so two threads won't fsckup each other
(including those started by root, including flipping ->mm when you don't
have permissions)
- pagemap_read() contains two calls to ptrace_may_attach(), second one
looks unneeded.
- avoid possible kmalloc(0) and integer wraparound.
Cc: Alexey Dobriyan <adobriyan@gmail.com>
Cc: Matt Mackall <mpm@selenic.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
[ Personally, I'd just remove the functionality entirely - Linus ]
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Eduard - Gabriel Munteanu [Sat, 5 Jul 2008 09:14:23 +0000 (12:14 +0300)]
Move _RET_IP_ and _THIS_IP_ to include/linux/kernel.h
These two macros are useful beyond lock debugging. Moved definitions from
include/linux/debug_locks.h to include/linux/kernel.h, so code that needs
them does not have to include the former, which would have been a less
intuitive choice of a header.
Signed-off-by: Eduard - Gabriel Munteanu <eduard.munteanu@linux360.ro>
Acked-by: Pekka Enberg <penberg@cs.helsinki.fi>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Linus Torvalds [Sat, 5 Jul 2008 20:09:31 +0000 (13:09 -0700)]
Merge branch 'core-fixes-for-linus' of git://git./linux/kernel/git/tip/linux-2.6-tip
* 'core-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
softlockup: print a module list on being stuck
Linus Torvalds [Sat, 5 Jul 2008 20:08:38 +0000 (13:08 -0700)]
Merge branch 'x86-fixes-for-linus' of git://git./linux/kernel/git/tip/linux-2.6-tip
* 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
x86 ACPI: fix resume from suspend to RAM on uniprocessor x86-64
x86 ACPI: normalize segment descriptor register on resume
Andrew Morton [Sat, 5 Jul 2008 19:29:05 +0000 (12:29 -0700)]
Fix clear_refs_write() use of struct mm_walk
Don't use a static entry, so as to prevent races during concurrent use
of this function.
Reported-by: Alexey Dobriyan <adobriyan@gmail.com>
Cc: Matt Mackall <mpm@selenic.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Linus Torvalds [Sat, 5 Jul 2008 20:06:19 +0000 (13:06 -0700)]
Merge git://git./linux/kernel/git/bart/ide-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/bart/ide-2.6:
ide: ide_unregister() locking bugfix
ide: ide_unregister() warm-plug bugfix
ide: fix hwif->gendev refcounting
Tejun Heo [Sat, 5 Jul 2008 04:10:50 +0000 (13:10 +0900)]
ahci: give another shot at clearing all bits in irq_stat
Commit
ea0c62f7cf70f13a67830471b613337bd0c9a62e tried to clear all
bits in irq_stat but it didn't actually achieve that as irq_stat was
anded with port_map right after read. This patch makes ahci driver
always use the unmasked value to clear irq_status.
While at it, add explanation on the peculiarities of ahci IRQ
clearing.
This was spotted by Linus Torvalds.
Signed-off-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Bartlomiej Zolnierkiewicz [Sat, 5 Jul 2008 18:30:51 +0000 (20:30 +0200)]
ide: ide_unregister() locking bugfix
Holding ide_lock for ide_release_dma_engine() call is unnecessary
and triggers WARN_ON(irqs_disabled()) in dma_free_coherent().
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Bartlomiej Zolnierkiewicz [Sat, 5 Jul 2008 18:30:51 +0000 (20:30 +0200)]
ide: ide_unregister() warm-plug bugfix
Fix ide_unregister() to work for ports with no devices attached to them.
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Bartlomiej Zolnierkiewicz [Sat, 5 Jul 2008 18:30:51 +0000 (20:30 +0200)]
ide: fix hwif->gendev refcounting
class->dev_release is called by device_release() iff dev->release
is not present so ide_port_class_release() is never called and the
last hwif->gendev reference is not dropped.
Fix it by removing ide_port_class_release() and get_device() call
from ide_register_port() (device_create_drvdata() takes a hwif->gendev
reference anyway).
This patch fixes hang on wait_for_completion(&hwif->gendev_rel_comp)
in ide_unregister() reported by Pavel Machek.
Cc: Pavel Machek <pavel@suse.cz>
Cc: "Rafael J. Wysocki" <rjw@sisk.pl>
Cc: Greg KH <greg@kroah.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Arjan van de Ven [Mon, 16 Jun 2008 22:51:08 +0000 (15:51 -0700)]
softlockup: print a module list on being stuck
Most places in the kernel that go BUG: print a module list
(which is very useful for doing statistics and finding patterns),
however the softlockup detector does not do this yet.
This patch adds the one line change to fix this gap.
Signed-off-by: Arjan van de Ven <arjan@linux.intel.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Ingo Molnar [Sat, 5 Jul 2008 06:42:45 +0000 (08:42 +0200)]
Merge branch 'x86/s2ram-fix' into x86/urgent
Rafael J. Wysocki [Fri, 4 Jul 2008 22:05:30 +0000 (00:05 +0200)]
x86 ACPI: fix resume from suspend to RAM on uniprocessor x86-64
Since the trampoline code is now used for ACPI resume from suspend to RAM,
the trampoline page tables have to be fixed up during boot not only on SMP
systems, but also on UP systems that use the trampoline.
Reference: http://bugzilla.kernel.org/show_bug.cgi?id=10923
Reported-by: Dionisus Torimens <djtm@gmx.net>
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: pm list <linux-pm@lists.linux-foundation.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
H. Peter Anvin [Tue, 24 Jun 2008 21:03:48 +0000 (23:03 +0200)]
x86 ACPI: normalize segment descriptor register on resume
Some Dell laptops enter resume with apparent garbage in the segment
descriptor registers (almost certainly the result of a botched
transition from protected to real mode.) The only way to clean that
up is to enter protected mode ourselves and clean out the descriptor
registers.
This fixes resume on Dell XPS M1210 and Dell D620.
Reference: http://bugzilla.kernel.org/show_bug.cgi?id=10927
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Pavel Machek <pavel@ucw.cz>
Cc: pm list <linux-pm@lists.linux-foundation.org>
Cc: Len Brown <lenb@kernel.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Tested-by: Kirill A. Shutemov <kirill@shutemov.name>
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
David Rientjes [Fri, 4 Jul 2008 19:24:13 +0000 (12:24 -0700)]
mempolicy: mask off internal flags for userspace API
Flags considered internal to the mempolicy kernel code are stored as part
of the "flags" member of struct mempolicy.
Before exposing a policy type to userspace via get_mempolicy(), these
internal flags must be masked. Flags exposed to userspace, however,
should still be returned to the user.
Signed-off-by: David Rientjes <rientjes@google.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Linus Torvalds [Fri, 4 Jul 2008 17:46:46 +0000 (10:46 -0700)]
Merge branch 'x86-fixes-for-linus' of git://git./linux/kernel/git/tip/linux-2.6-tip
* 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
xen: fix address truncation in pte mfn<->pfn conversion
arch/x86/mm/init_64.c: early_memtest(): fix types
x86: fix Intel Mac booting with EFI
Pierre Ossman [Fri, 4 Jul 2008 10:51:20 +0000 (12:51 +0200)]
mmc: don't use DMA on newer ENE controllers
Even the newer ENE controllers have bugs in their DMA engine that make
it too dangerous to use. Disable it until someone has figured out under
which conditions it corrupts data.
This has caused problems at least once, and can be found as bug report
10925 in the kernel bugzilla.
Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Paul Jackson [Fri, 4 Jul 2008 17:00:09 +0000 (10:00 -0700)]
doc: document the relax_domain_level kernel boot argument
Document the kernel boot parameter: relax_domain_level=.
Signed-off-by: Paul Jackson <pj@sgi.com>
Cc: Michael Kerrisk <mtk.manpages@googlemail.com>
Reviewed-by: Li Zefan <lizf@cn.fujitsu.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Li Zefan [Fri, 4 Jul 2008 17:00:07 +0000 (10:00 -0700)]
devcgroup: fix odd behaviour when writing 'a' to devices.allow
# cat /devcg/devices.list
a *:* rwm
# echo a > devices.allow
# cat /devcg/devices.list
a *:* rwm
a 0:0 rwm
This is odd and maybe confusing. With this patch, writing 'a' to
devices.allow will add 'a *:* rwm' to the whitelist.
Also a few fixes and updates to the document.
Signed-off-by: Li Zefan <lizf@cn.fujitsu.com>
Cc: Pavel Emelyanov <xemul@openvz.org>
Cc: Serge E. Hallyn <serue@us.ibm.com>
Cc: Paul Menage <menage@google.com>
Cc: Balbir Singh <balbir@in.ibm.com>
Cc: James Morris <jmorris@namei.org>
Cc: Chris Wright <chrisw@sous-sol.org>
Cc: Stephen Smalley <sds@tycho.nsa.gov>
Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Rajiv Andrade [Fri, 4 Jul 2008 17:00:06 +0000 (10:00 -0700)]
Update MAINTAINERS file for the TPM device driver
Acked-By: Debora Velarde <debora@linux.vnet.ibm.com>
Cc: <zohar@linux.vnet.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
John Blackwood [Fri, 4 Jul 2008 17:00:05 +0000 (10:00 -0700)]
mm: switch node meminfo Active & Inactive pages to Kbytes
There is a bug in the output of /sys/devices/system/node/node[n]/meminfo
where the Active and Inactive values are in pages instead of Kbytes.
Looks like this occurred back in 2.6.20 when the code was changed
over to use node_page_state().
Cc: <stable@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Stephen Rothwell [Fri, 4 Jul 2008 17:00:05 +0000 (10:00 -0700)]
cpumask: introduce new APIs
In linux-next there is a commit ("x86: Add performance variants of cpumask
operators") which, as part of the 4096 cpu support work adds some new APIs
for dealing with cpu masks. Add trivial versions of these now so that
subsystems can update in a timely manner and avoid conflicts in linux-next
and the next merge window.
Cc: Mike Travis <travis@sgi.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Andres Salomon [Fri, 4 Jul 2008 17:00:04 +0000 (10:00 -0700)]
olpc: sdhci: add quirk for the Marvell CaFe's interrupt timeout
The CaFe chip has a hardware bug that ends up with us getting a timeout
value that's too small, causing the following sorts of problems:
[ 60.525138] mmcblk0: error -110 transferring data
[ 60.531477] end_request: I/O error, dev mmcblk0, sector
1484353
[ 60.533371] Buffer I/O error on device mmcblk0p2, logical block 181632
[ 60.533371] lost page write due to I/O error on mmcblk0p2
Presumably this is an off-by-one error in the hardware. Incrementing
the timeout count value that we stuff into the TIMEOUT_CONTROL register
gets us a value that works. This bug was originally discovered by
Pierre Ossman, I believe.
[thanks to Robert Millan for proving that this was still a problem]
Signed-off-by: Andres Salomon <dilinger@debian.org>
Cc: Pierre Ossman <drzeus-list@drzeus.cx>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Andres Salomon [Fri, 4 Jul 2008 17:00:03 +0000 (10:00 -0700)]
olpc: sdhci: add quirk for the Marvell CaFe's vdd/powerup issue
This has been sitting around unloved for way too long..
The Marvell CaFe chip's SD implementation chokes during card insertion
if one attempts to set the voltage and power up in the same
SDHCI_POWER_CONTROL register write. This adds a quirk that does
that particular dance in two steps.
It also adds an entry to pci_ids.h for the CaFe chip's SD device.
Signed-off-by: Andres Salomon <dilinger@debian.org>
Cc: Pierre Ossman <drzeus-list@drzeus.cx>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Mike Miller [Fri, 4 Jul 2008 17:00:02 +0000 (10:00 -0700)]
cciss: read config to obtain max outstanding commands per controller
This patch changes the way we determine the maximum number of outstanding
commands for each controller.
Most Smart Array controllers can support up to 1024 commands, the notable
exceptions are the E200 and E200i.
The next generation of controllers which were just added support a mode of
operation called Zero Memory Raid (ZMR). In this mode they only support
64 outstanding commands. In Full Function Raid (FFR) mode they support
1024.
We have been setting the queue depth by arbitrarily assigning some value
for each controller. We needed a better way to set the queue depth to
avoid lots of annoying "fifo full" messages. So we made the driver a
little smarter. We now read the config table and subtract 4 from the
returned value. The -4 is to allow some room for ioctl calls which are
not tracked the same way as io commands are tracked.
Please consider this for inclusion.
Signed-off-by: Mike Miller <mike.miller@hp.com>
Cc: Jens Axboe <jens.axboe@oracle.com>
Cc: <stable@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Geert Uytterhoeven [Fri, 4 Jul 2008 17:00:01 +0000 (10:00 -0700)]
MAINTAINERS: update the email address of Andreas Dilger
The old one bounces.
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Andreas Dilger <adilger@sun.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Paul Jackson [Fri, 4 Jul 2008 17:00:01 +0000 (10:00 -0700)]
cpusets: document proc status cpus and mems allowed lists
Provide a little documentation for the two new fields, Cpus_allowed_list
and Mems_allowed_list, that were added to each /proc/<pid>/status file a
while back.
Signed-off-by: Paul Jackson <pj@sgi.com>
Acked-by: Michael Kerrisk <mtk.manpages@gmail.com>
Cc: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Bastian Blank [Fri, 4 Jul 2008 17:00:00 +0000 (10:00 -0700)]
Alpha Linux kernel fails with inconsistent kallsyms data
The build of the Alpha Linux kernel currently fails[1] with inconsistent
kallsyms data. As I never saw that before, I thought about hardware
problems. But in fact it is a bug in the Linux kernel.
The end of the rodata section is marked with the "__end_rodata" symbol.
This symbol have different aligning constraints than the inittext parts
and therefor the start marked "_sinittext". Because of that the
__end_rodata symbol shifts between < _sinittext and == _sinittext. The
later variant is seen as a code symbol and recorded in the kallsyms data.
On fix would be to move the exception table a little bit and get some
space between that two areas.
[1]: http://buildd.debian.org/fetch.cgi?pkg=linux-2.6&arch=alpha&ver=2.6.25-5&stamp=
1213919009&file=log&as=raw
Cc: maximilian attems <max@stro.at>
Cc: Richard Henderson <rth@twiddle.net>
Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Andrew G. Morgan [Fri, 4 Jul 2008 16:59:59 +0000 (09:59 -0700)]
security: filesystem capabilities: fix CAP_SETPCAP handling
The filesystem capability support meaning for CAP_SETPCAP is less powerful
than the non-filesystem capability support. As such, when filesystem
capabilities are configured, we should not permit CAP_SETPCAP to 'enhance'
the current process through strace manipulation of a child process.
Signed-off-by: Andrew G. Morgan <morgan@kernel.org>
Acked-by: Serge Hallyn <serue@us.ibm.com>
Cc: David Howells <dhowells@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Andrew G. Morgan [Fri, 4 Jul 2008 16:59:58 +0000 (09:59 -0700)]
security: filesystem capabilities: fix fragile setuid fixup code
This commit includes a bugfix for the fragile setuid fixup code in the
case that filesystem capabilities are supported (in access()). The effect
of this fix is gated on filesystem capability support because changing
securebits is only supported when filesystem capabilities support is
configured.)
[akpm@linux-foundation.org: coding-style fixes]
Signed-off-by: Andrew G. Morgan <morgan@kernel.org>
Acked-by: Serge Hallyn <serue@us.ibm.com>
Acked-by: David Howells <dhowells@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Randy Dunlap [Fri, 4 Jul 2008 16:59:57 +0000 (09:59 -0700)]
doc: doc maintainers
Maintain the kernel's Documentation/ tree.
This includes tree layout and contents, although not much in terms of new
content production. That will usually have to be done by someone familiar
with the software, at least in some rough form.
Includes review and editorial assistance for people contributing changes
to /Documentation.
Also includes prodding people for content if something is in need of
documentation.
Signed-off-by: Randy Dunlap <rdunlap@xenotime.net>
Acked-by: Michael Kerrisk <mtk.manpages@gmail.com>
Cc: Jonathan Corbet <corbet@lwn.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Sebastian Siewior [Fri, 4 Jul 2008 16:59:56 +0000 (09:59 -0700)]
spi: fix the read path in spidev
This got broken by the recent "fix rmmod $spi_driver while spidev-user is
active". I tested the rmmod & write path but didn't check the read path.
I am sorry. The read logic changed and spidev_sync_read() +
spidev_sync_write() do not return zero on success anymore but the number
of bytes that has been transfered over the bus. This patch changes the
logic and copy_to_user() gets called again.
The write path returns the number of bytes which are written to the
underlying device what may be less than the requested size. This patch
makes the same change to the read path or else we request a read of 20
bytes, get 10, don't call copy to user and report to the user that we read
10 bytes.
[akpm@linux-foundation.org: remove test of known-to-be-zero local]
Signed-off-by: Sebastian Siewior <bigeasy@linutronix.de>
Acked-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Li Zefan [Fri, 4 Jul 2008 16:59:55 +0000 (09:59 -0700)]
cgroups: document the effect of attaching PID 0 to a cgroup
Document that a pid of zero(0) can be used to refer to the current task
when attaching a task to a cgroup, as in the following usage:
# echo 0 > /dev/cgroup/tasks
This is consistent with existing cpuset behavior.
Signed-off-by: Li Zefan <lizf@cn.fujitsu.com>
Acked-by: Paul Jackson <pj@sgi.com>
Acked-by: Dhaval Giani <dhaval@linux.vnet.ibm.com>
Cc: Paul Menage <menage@google.com>
Cc: Balbir Singh <balbir@in.ibm.com>
Cc: Andrea Righi <righi.andrea@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Samuel Ortiz [Fri, 4 Jul 2008 16:59:53 +0000 (09:59 -0700)]
MFD maintainer
We probably need someone to look after the few drivers/mfd patches coming
every now and then. As agreed with Andrew, I'm ok to do so and my
employer is fine with me spending a few working hours on it, if needed.
Ben, Philipp, feel free to add your names there too if you wish.
Signed-off-by: Samuel Ortiz <sameo@openedhand.com>
Cc: "pHilipp Zabel" <philipp.zabel@gmail.com>
Cc: Ian Molton <spyro@f2s.com>
Cc: Ben Dooks <ben-linux@fluff.org>
Cc: Dmitry Baryshkov <dbaryshkov@gmail.com>
Cc: Russell King <rmk@arm.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Philipp Zabel [Fri, 4 Jul 2008 16:59:53 +0000 (09:59 -0700)]
w100fb: add 80 MHz modeline
This is needed for HTC Blueangel (w3200). At 96MHz its screen flickers.
Signed-off-by: Philipp Zabel <philipp.zabel@gmail.com>
Acked-by: Ian Molton <spyro@f2s.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Philipp Zabel [Fri, 4 Jul 2008 16:59:52 +0000 (09:59 -0700)]
w100fb: do not depend on SHARPSL
Apart from Sharp SL-Cxx series, there are a few other devices that have
ATI Imageon chips, among them HP iPAQ hx4700.
Signed-off-by: Philipp Zabel <philipp.zabel@gmail.com>
Acked-by: Ian Molton <spyro@f2s.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Akinobu Mita [Fri, 4 Jul 2008 16:59:51 +0000 (09:59 -0700)]
add kernel-doc for simple_read_from_buffer and memory_read_from_buffer
Add kernel-doc comments describing simple_read_from_buffer and
memory_read_from_buffer.
Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Cc: Christoph Hellwig <hch@lst.de>
Cc: "Randy.Dunlap" <rdunlap@xenotime.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Jess Guerrero [Fri, 4 Jul 2008 16:59:50 +0000 (09:59 -0700)]
ntfs: update help text
The url in the help text for ntfs should be updated.
Acked-by: Anton Altaparmakov <aia21@cantab.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Michael Kerrisk [Fri, 4 Jul 2008 16:59:49 +0000 (09:59 -0700)]
man-pages is supported
Starting last month, I reached a long-time goal: man-pages finally has a
paid, full-time maintainer, thanks to a fellowship from the Linux
Foundation. It's still a little unclear how long the LF money will last
for the fellowship, but for the foreseeable future, I'll be working on:
* Properly documenting every new Linux kernel-userland (and glibc) API,
and every API change, that is released into the mainline kernel, ideally
before actual release. (That's the ideal, but there's a quite a
backlog, so I'm not going to achieve the ideal immediately.)
* Testing new APIs, again ideally before they are released into the
mainline kernel, and probably doing some light bug fixing while I'm at
it (e.g., the recent utimensat() work).
* Design review of new APIs, which of course can only usefully be done
before they are released into the mainline kernel.
* And of course accepting patches and dealing with bug reports for
existing man pages.
Signed-off-by: Michael Kerrisk <mtk.manpages@googlemail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Stephen Rothwell [Fri, 4 Jul 2008 16:59:48 +0000 (09:59 -0700)]
Introduce rculist.h
In linux-next there is a commit ("rcu: split list.h and move rcu-protected
lists into rculist.h") that moved the rcu related list iterators from
list.h to rculist.h. Add a trivial version of the file now so that
various subsystem trees can start using it now for -next changes and so
reduce the build errors caused by adding uses of the moved functions.
Cc: Franck Bui-Huu <fbuihuu@gmail.com>
Acked-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Cc: Josh Triplett <josh@kernel.org>
Acked-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
David Howells [Fri, 4 Jul 2008 16:59:47 +0000 (09:59 -0700)]
mn10300: provide __ucmpdi2() for MN10300
Provide __ucmpdi2() for MN10300 so that allmodconfig can be built.
Signed-off-by: David Howells <dhowells@redhat.com>
Cc: Adrian Bunk <bunk@stusta.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
David Howells [Fri, 4 Jul 2008 16:59:46 +0000 (09:59 -0700)]
mn10300: export certain arch symbols required to build allmodconfig
Export kernel_thread() and empty_zero_page so that allmodconfig can be
built for MN10300.
Signed-off-by: David Howells <dhowells@redhat.com>
Cc: Adrian Bunk <bunk@stusta.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
maximilian attems [Fri, 4 Jul 2008 16:59:43 +0000 (09:59 -0700)]
hdaps: add support for various newer Lenovo thinkpads
Adds R61, T61p, X61s, X61, Z61m, Z61p models to whitelist.
Fixes this:
cullen@lenny:~$ sudo modprobe hdaps
FATAL: Error inserting hdaps (/lib/modules/2.6.22-10-generic/kernel/drivers/hwmon/hdaps.ko): No such device
[25192.888000] hdaps: supported laptop not found!
[25192.888000] hdaps: driver init failed (ret=-19)!
Originally based on an Ubuntu patch that got it wrong, the dmidecode
output of the corresponding laptops shows LENOVO as the manufacturer.
https://bugs.launchpad.net/ubuntu/+source/linux-source-2.6.22/+bug/133636
tested on X61s:
[ 184.893588] hdaps: inverting axis readings.
[ 184.893588] hdaps: LENOVO ThinkPad X61s detected.
[ 184.893588] input: hdaps as /class/input/input12
[ 184.924326] hdaps: driver successfully loaded.
Cc: Klaus S. Madsen <ubuntu@hjernemadsen.org>
Cc: Chuck Short <zulcss@ubuntu.com>
Cc: Jean Delvare <khali@linux-fr.org>
Cc: Tim Gardner <tim.gardner@canonical.com>
Signed-off-by: maximilian attems <max@stro.at>
Cc: Mark M. Hoffman <mhoffman@lightlink.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Pavel Machek [Fri, 4 Jul 2008 16:59:43 +0000 (09:59 -0700)]
Doc*/kernel-parameters.txt: fix stale references
Fix stale references to source files in kernel-parameters.txt.
Signed-off-by: Pavel Machek <pavel@suse.cz>
Acked-by: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Balbir Singh [Fri, 4 Jul 2008 16:59:42 +0000 (09:59 -0700)]
delay accounting: maintainer update
Update the delay accounting and taskstats maintainer to Balbir Singh.
I spoke to Shailabh and he is now busy with other things.
Cc: Shailabh Nagar <nagar1234@in.ibm.com>
Cc: Shailabh Nagar <nagar@watson.ibm.com>
Signed-off-by: Balbir Singh <balbir@linux.vnet.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Stephen M. Cameron [Fri, 4 Jul 2008 16:59:40 +0000 (09:59 -0700)]
cciss: fix regression that no device nodes are created if no logical drives are configured.
Fix regression in cciss driver that if no logical drives are configured,
no device nodes at all get created.
Signed-off-by: Stephen M. Cameron <scameron@beardog.cca.cpqcorp.net>
Acked-by: Mike Miller <mike.miller@hp.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Hiroshi Shimamoto [Fri, 4 Jul 2008 16:59:39 +0000 (09:59 -0700)]
Update taskstats-struct document for scaled time accounting
Update Documentation/accounting/taskstats-struct.txt for TASKSTATS_VERSION 6,
adding scaled time accounting.
Signed-off-by: Hiroshi Shimamoto <h-shimamoto@ct.jp.nec.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Anton Vorontsov [Fri, 4 Jul 2008 16:59:38 +0000 (09:59 -0700)]
fsl_diu_fb: fix build with CONFIG_PM=y, plus fix some warnings
This patch fixes following build error when CONFIG_PM is set.
CC drivers/video/fsl-diu-fb.o
drivers/video/fsl-diu-fb.c: In function 'fsl_diu_suspend':
drivers/video/fsl-diu-fb.c:1327: error: 'ofdev' undeclared (first use in this function)
drivers/video/fsl-diu-fb.c:1327: error: (Each undeclared identifier is reported only once
drivers/video/fsl-diu-fb.c:1327: error: for each function it appears in.)
drivers/video/fsl-diu-fb.c: In function 'fsl_diu_resume':
drivers/video/fsl-diu-fb.c:1337: error: 'ofdev' undeclared (first use in this function)
While I'm at it, also fix this warning:
drivers/video/fsl-diu-fb.c: In function 'fsl_diu_alloc':
drivers/video/fsl-diu-fb.c:314: warning: format '%lx' expects type 'long unsigned int', but argument 3 has type 'phys_addr_t'
And these section mismatches:
..from the function fsl_diu_remove() to the function .exit.text:uninstall_fb()
..from the function fsl_diu_remove() to the function .exit.text:uninstall_fb()
..from the function install_fb() to the variable .devinit.data:fsl_diu_mode_db
..from the function install_fb() to the variable .devinit.data:fsl_diu_mode_db
..from the function fsl_diu_probe() to the function .exit.text:uninstall_fb()
..from the function fsl_diu_probe() to the function .exit.text:uninstall_fb()
Also, some sparse fixes: make two functions static, and use NULL where
appropriate. There are still a lot of sparse warnings, mainly wrt absence
of __iomem annotations, but some will require ugly __force stuff. I'll leave
them for now, since proper fix would be not that trivial as few one-liners
below.
Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com>
Cc: Timur Tabi <timur@freescale.com>
Cc: Antonino Daplas <adaplas@gmail.com>
Cc: York Sun <yorksun@freescale.com>
Cc: Krzysztof Helt <krzysztof.h1@poczta.fm>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
David Brownell [Fri, 4 Jul 2008 16:59:37 +0000 (09:59 -0700)]
gpio: pca953x (i2c) handles max7310 too
The pca953x driver can handle another 8-bit I/O expander, the max7310.
This patch adds that chip to the list of supported IDs in that driver, and
expands the Kconfig helptext accordingly.
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Paul Mundt [Fri, 4 Jul 2008 16:59:36 +0000 (09:59 -0700)]
lib: taint kernel in common report_bug() WARN path.
Commit
95b570c9cef3b12356454c7112571b7e406b4b51 ("Taint kernel after
WARN_ON(condition)") introduced a TAINT_WARN that was implemented for
all architectures using the generic warn_on_slowpath(), which excluded
any architecture that set HAVE_ARCH_WARN_ON.
As all of the architectures that implement their own WARN_ON() all go
through the report_bug() path (specifically handling BUG_TRAP_TYPE_WARN),
taint the kernel there as well for consistency.
Tested on avr32 and sh. Also relevant for s390, parisc, and powerpc.
Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Acked-by: Kyle McMartin <kyle@mcmartin.ca>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Michael Halcrow [Fri, 4 Jul 2008 16:59:35 +0000 (09:59 -0700)]
ecryptfs: remove unnecessary mux from ecryptfs_init_ecryptfs_miscdev()
The misc_mtx should provide all the protection required to keep the daemon
hash table sane during miscdev registration. Since this mutex is causing
gratuitous lockdep warnings, this patch removes it.
Signed-off-by: Michael Halcrow <mhalcrow@us.ibm.com>
Reported-by: Cyrill Gorcunov <gorcunov@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Jan Kara [Fri, 4 Jul 2008 16:59:34 +0000 (09:59 -0700)]
reiserfs: add missing unlock to an error path in reiserfs_quota_write()
When write in reiserfs_quota_write() fails, we have to properly release
i_mutex. One error path has been missing the unlock...
Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Jan Kara [Fri, 4 Jul 2008 16:59:34 +0000 (09:59 -0700)]
ext4: add missing unlock to an error path in ext4_quota_write()
When write in ext4_quota_write() fails, we have to properly release
i_mutex. One error path has been missing the unlock...
Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Jan Kara [Fri, 4 Jul 2008 16:59:33 +0000 (09:59 -0700)]
ext3: add missing unlock to error path in ext3_quota_write()
When write in ext3_quota_write() fails, we have to properly release
i_mutex. One error path has been missing the unlock...
Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Miguel Ojeda [Fri, 4 Jul 2008 16:59:33 +0000 (09:59 -0700)]
Miguel Ojeda has moved
Signed-off-by: Miguel Ojeda <miguel.ojeda.sandonis@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Tejun Heo [Fri, 4 Jul 2008 16:59:32 +0000 (09:59 -0700)]
pci: VT3336 can't do MSI either
It seems VT3336 can't do msi either as with its bro 3351. Disable it.
Reported in the following SUSE bug.
https://bugzilla.novell.com/show_bug.cgi?id=300001
Signed-off-by: Tejun Heo <tj@kernel.org>
Acked-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Huacai Chen [Fri, 4 Jul 2008 16:59:31 +0000 (09:59 -0700)]
rtc: fix CMOS time error after writing /proc/acpi/alarm
When writing /proc/acpi/alarm in adjust mode, e.g.
echo "+0000-00-00 00:00:15" >/proc/acpi/alarm
The "century" field should be read and added to "year" field before
writing, otherwise the CMOS time will go back to 2000 years ago, e.g.
# cat /proc/acpi/alarm
0008-06-21 11:38:46
Then the system time may be reset to the date of manufacture after
rebooting. This patch fixed this issue.
Signed-off-by: Huacai Chen <huacai.chen@intel.com>
Acked-by: Pavel Machek <pavel@suse.cz>
Acked-by: Zhao Yakui <yakui.zhao@intel.com>
Acked-by: Alessandro Zummo <a.zummo@towertech.it>
Acked-by: Len Brown <lenb@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Michael Hamel [Fri, 4 Jul 2008 16:59:30 +0000 (09:59 -0700)]
rtc-x1205: Fix alarm set
I have discovered that the current version of rtc-x1205.c does not work
correctly when asked to set the alarm time by the RTC_WKALM_SET ioctl()
call. This happens because the alarm registers do not behave like the
current-time registers. They are non-volatile. Two things go wrong:
- the X1205 requires a 10 msec delay after any attempt to write to the
non-volatile registers. The x1205_set_datetime() routine does the write
as 8 single-byte writes without any delay. Only the first write
succeeds. The second is NAKed because the chip is busy.
- the X1205 resets the RWEL bit after any write to the non-volatile
registers. This would lock out any further writes after the first even
with a 10msec delay.
I fix this by doing a single 8-byte write and then waiting 10msec for the
chip to be ready. A side effect of this change is that it will speed up
x1205_rtc_set_time() which uses the same code.
I have also implemented the 'enable' bit in the rtc_wkalm structure, which
the existing driver does not attempt to do. I have modified both
x1205_rtc_set_alarm() to set the AL0E bit, and x1205_rtc_read_alarm() to
return it.
I have tested this patch on a LinkSys NSLU2 under OpenWRT, but on no other
hardware. On the NSLU2 the X1205 correctly asserts its IRQ pin when the
alarm time matches the current time.
[akpm@linux-foundation.org: clean up over-parenthesisation]
Signed-off-by: Michael Hamel <mhamel@adi.co.nz>
Signed-off-by: Alessandro Zummo <a.zummo@towertech.it>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Oleg Nesterov [Fri, 4 Jul 2008 16:59:28 +0000 (09:59 -0700)]
get_user_pages(): fix possible page leak on oom
get_user_pages() must not return the error when i != 0. When pages !=
NULL we have i get_page()'ed pages.
Signed-off-by: Oleg Nesterov <oleg@tv-sign.ru>
Acked-by: Nick Piggin <npiggin@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Guennadi Liakhovetski [Fri, 4 Jul 2008 16:59:28 +0000 (09:59 -0700)]
serial: fix serial_match_port() for dynamic major tty-device numbers
As reported by Vipul Gandhi, the current serial_match_port() doesn't work
for tty-devices using dynamic major number allocation. Fix it.
It oopses if you suspend a serial port with _dynamic_ major number. ATM,
I think, there's only the drivers/serial/jsm/jsm_driver.c driver, that
does it in-tree.
Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Tested-by: Vipul Gandhi <vcgandhi1@aol.com>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Cc: <stable@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
James Bottomley [Fri, 4 Jul 2008 16:59:27 +0000 (09:59 -0700)]
firmware: fix the request_firmware() dummy
> the build (.config attached) failed, make ends with :
> ...
> UPD include/linux/compile.h
> CC init/version.o
> LD init/built-in.o
> LD vmlinux
> drivers/built-in.o: In function `sas_request_addr':
> (.text+0x33bab): undefined reference to `request_firmware'
> drivers/built-in.o: In function `sas_request_addr':
> (.text+0x33c3f): undefined reference to `release_firmware'
> make: *** [vmlinux] Error 1
There's a slight fault in the stub logic. It fails for FW_LOADER=m and
the user =y.
This should fix it.
This patch fixes the following 2.6.26-rc regression:
http://bugzilla.kernel.org/show_bug.cgi?id=10730
Reviewed-by: Toralf Foerster <toralf.foerster@gmx.de>
Signed-off-by: Adrian Bunk <bunk@kernel.org>
Cc: "Rafael J. Wysocki" <rjw@sisk.pl>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
David Brownell [Fri, 4 Jul 2008 16:59:26 +0000 (09:59 -0700)]
rtc: rtc_read_alarm() handles wraparound
While
0e36a9a4a788e4e92407774df76c545910810d35 ("rtc: fix readback from
/sys/class/rtc/rtc?/wakealarm") made sure that active alarms were never
returned with invalid "wildcard" fields (negative), it can still report
(wrongly) that the alarm triggers in the past.
Example, if it's now 10am, an alarm firing at 5am will be triggered
TOMORROW not today. (Which may also be next month or next year...)
This updates that alarm handling in three ways:
* Handle alarm rollover in the common cases of RTCs that don't
support matching on all date fields.
* Skip the invalid-field logic when it's not needed.
* Minor bugfix ... tm_isdst should be ignored, it's one of the
fields Linux doesn't maintain.
A warning is emitted for some of the unhandled rollover cases, but the
possible combinations are a bit too numerous to handle every bit of
potential hardware and firmware braindamage.
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Cc: Mark Lord <lkml@rtr.ca>
Acked-by: Alessandro Zummo <a.zummo@towertech.it>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Peter Zijlstra [Fri, 4 Jul 2008 16:59:24 +0000 (09:59 -0700)]
mm: dirty page accounting vs VM_MIXEDMAP
Dirty page accounting accurately measures the amound of dirty pages in
writable shared mappings by mapping the pages RO (as indicated by
vma_wants_writenotify). We then trap on first write and call
set_page_dirty() on the page, after which we map the page RW and
continue execution.
When we launder dirty pages, we call clear_page_dirty_for_io() which
clears both the dirty flag, and maps the page RO again before we start
writeout so that the story can repeat itself.
vma_wants_writenotify() excludes VM_PFNMAP on the basis that we cannot
do the regular dirty page stuff on raw PFNs and the memory isn't going
anywhere anyway.
The recently introduced VM_MIXEDMAP mixes both !pfn_valid() and
pfn_valid() pages in a single mapping.
We can't do dirty page accounting on !pfn_valid() pages as stated
above, and mapping them RO causes them to be COW'ed on write, which
breaks VM_SHARED semantics.
Excluding VM_MIXEDMAP in vma_wants_writenotify() would mean we don't do
the regular dirty page accounting for the pfn_valid() pages, which
would bring back all the head-aches from inaccurate dirty page
accounting.
So instead, we let the !pfn_valid() pages get mapped RO, but fix them
up unconditionally in the fault path.
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Nick Piggin <nickpiggin@yahoo.com.au>
Acked-by: Hugh Dickins <hugh@veritas.com>
Cc: "Jared Hulbert" <jaredeh@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Christoph Lameter [Fri, 4 Jul 2008 16:59:22 +0000 (09:59 -0700)]
Christoph has moved
Remove all clameter@sgi.com addresses from the kernel tree since they will
become invalid on June 27th. Change my maintainer email address for the
slab allocators to cl@linux-foundation.org (which will be the new email
address for the future).
Signed-off-by: Christoph Lameter <clameter@sgi.com>
Signed-off-by: Christoph Lameter <cl@linux-foundation.org>
Cc: Pekka Enberg <penberg@cs.helsinki.fi>
Cc: Stephen Rothwell <sfr@canb.auug.org.au>
Cc: Matt Mackall <mpm@selenic.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Linus Torvalds [Fri, 4 Jul 2008 16:52:54 +0000 (09:52 -0700)]
Merge branch 'upstream-linus' of git://git./linux/kernel/git/jgarzik/libata-dev
* 'upstream-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jgarzik/libata-dev:
sata_mv: safer logic for limit_warnings
libata-sff: improve HSM violation reporting
ahci: always clear all bits in irq_stat
sata_sil24: add DID for another adaptec flavor
sata_uli: hardreset is broken
Linus Torvalds [Fri, 4 Jul 2008 16:51:51 +0000 (09:51 -0700)]
Merge branch 'upstream' of git://ftp.linux-mips.org/upstream-linus
* 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-linus:
[MIPS] Fix bug in atomic_sub_if_positive.
Linus Torvalds [Fri, 4 Jul 2008 16:48:21 +0000 (09:48 -0700)]
Merge branch 'for-linus' of git://git./linux/kernel/git/penberg/slab-2.6
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/penberg/slab-2.6:
slub: Do not use 192 byte sized cache if minimum alignment is 128 byte
Paul Mackerras [Fri, 4 Jul 2008 11:04:42 +0000 (21:04 +1000)]
Update maintainers for powerpc
This updates the MAINTAINERS entries for powerpc. It adds Ben H to
the overall Linux for PowerPC entry and makes it clear this covers
both 32-bit and 64-bit machines. It removes the separate entry we had
for Linux on 64-bit PowerPC where Anton and I were listed as
maintainers - Anton hasn't been involved in the day-to-day maintenance
of the code for several years. Finally, it removes the entry for the
Linux for PowerPC boot code where Tom Rini was listed as the
maintainer. That code got completely rewritten when we merged
32-bit and 64-bit, and I and the various platform maintainers have
been maintaining that code since.
Signed-off-by: Paul Mackerras <paulus@samba.org>
Acked-by: Tom Rini <trini@kernel.crashing.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Mark Lord [Thu, 19 Jun 2008 01:57:42 +0000 (21:57 -0400)]
sata_mv: safer logic for limit_warnings
There is a miniscule chance that two separate host controllers
might be in sata_mv at the same time and manage to decrement
the static limit_warnings variable below zero.
Fix the comparison to deal with it.
Signed-off-by: Mark Lord <mlord@pobox.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
Tejun Heo [Fri, 27 Jun 2008 16:39:43 +0000 (01:39 +0900)]
libata-sff: improve HSM violation reporting
Improve SFF HSM violation reporting such that each HSM violation can
be distinguished using ehi_desc.
Signed-off-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
Tejun Heo [Fri, 27 Jun 2008 16:49:02 +0000 (01:49 +0900)]
ahci: always clear all bits in irq_stat
Some AHCI controllers (ICH7 was reported) set pending bit in
HOST_IRQ_STAT for non-existent ports and when it's not cleared falls
into IRQ storm. Always clear full irq_stat instead of only the bits
that are handled. As nothing changes for recognized ports, the risk
of breaking things is pretty low.
Reported and verified by Philipp Thomas in the following suse
bugzilla.
https://bugzilla.novell.com/attachment.cgi?id=215692
Signed-off-by: Tejun Heo <tj@kernel.org>
Cc: Philipp Thomas <pth@novell.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
Tejun Heo [Wed, 2 Jul 2008 08:50:23 +0000 (17:50 +0900)]
sata_sil24: add DID for another adaptec flavor
There's another DID used for Adaptec card. Add it.
Reported by Travis Read.
Signed-off-by: Tejun Heo <tj@kernel.org>
Cc: Travis Read <ics@dark.net.au>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
Laurent Pinchart [Thu, 26 Jun 2008 09:48:22 +0000 (11:48 +0200)]
fs_enet: restore promiscuous and multicast settings in restart()
The restart() function is called when the link state changes and resets
multicast and promiscuous settings. This patch restores those settings at the
end of restart().
Signed-off-by: Laurent Pinchart <laurentp@cse-semaphore.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
Sathya Narayanan [Tue, 1 Jul 2008 08:58:19 +0000 (10:58 +0200)]
ibm_newemac: Fixes entry of short packets
Short packets has to be discarded by the driver. So this patch addresses the
issue of discarding the short packets of size lesser then ethernet header
size.
Signed-off-by: Sathya Narayanan <sathyan@teamf1.com>
Signed-off-by: Stefan Roese <sr@denx.de>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
Sathya Narayanan [Tue, 1 Jul 2008 08:58:05 +0000 (10:58 +0200)]
ibm_newemac: Fixes kernel crashes when speed of cable connected changes
The descriptor pointers were not initialized to NIL values, so it was
poiniting to some random addresses which was completely invalid. This
fix takes care of initializing the descriptor to NIL values and clearing
the valid descriptors on clean ring operation.
Signed-off-by: Sathya Narayanan <sathyan@teamf1.com>
Signed-off-by: Stefan Roese <sr@denx.de>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
Roland Dreier [Tue, 1 Jul 2008 17:22:45 +0000 (10:22 -0700)]
pasemi_mac: Access iph->tot_len with correct endianness
iph->tot_len is stored in network byte order, so access it using
ntohs(). This doesn't have any real world impact on pasemi_mac, since
the device only exists as part of a big-endian system-on-chip, but
fixing this gets rid of a sparse warning and avoids having a bad example
in the tree.
Signed-off-by: Roland Dreier <rolandd@cisco.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
Roland Dreier [Tue, 1 Jul 2008 17:20:33 +0000 (10:20 -0700)]
ehea: Access iph->tot_len with correct endianness
iph->tot_len is stored in network byte order, so access it using
ntohs(). This doesn't have any real world impact on ehea, since ehea
only exists for big-endian platfroms (at the moment at least) but fixing
this gets rid of a sparse warning and avoids having a bad example in the
tree.
Signed-off-by: Roland Dreier <rolandd@cisco.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
Jan-Bernd Themann [Thu, 3 Jul 2008 14:18:51 +0000 (15:18 +0100)]
ehea: fix race condition
When ehea_stop is called the function
cancel_work_sync(&port->reset_task) is used to ensure
that the reset task is not running anymore. We need an
additional flag to ensure that it can not be scheduled
after this call again for a certain time.
Signed-off-by: Jan-Bernd Themann <themann@de.ibm.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
Jan-Bernd Themann [Thu, 3 Jul 2008 14:18:48 +0000 (15:18 +0100)]
ehea: add MODULE_DEVICE_TABLE
Required to allow distros to easily detect when ehea
module needs to be loaded
Signed-off-by: Jan-Bernd Themann <themann@de.ibm.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
Jan-Bernd Themann [Thu, 3 Jul 2008 14:18:45 +0000 (15:18 +0100)]
ehea: fix might sleep problem
A mutex has to be replaced by spinlocks as it can be called from
a context which does not allow sleeping.
The kzalloc flag GFP_KERNEL has to be replaced by GFP_ATOMIC
for the same reason.
Signed-off-by: Jan-Bernd Themann <themann@de.ibm.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
Tobias Diedrich [Fri, 4 Jul 2008 06:54:56 +0000 (23:54 -0700)]
forcedeth: fix lockdep warning on ethtool -s
After enabling CONFIG_LOCKDEP and CONFIG_PROVE_LOCKING I get the
following warning when ethtool -s is first called on one of the
forcedeth ports:
=================================
[ INFO: inconsistent lock state ]
2.6.26-rc4 #28
---------------------------------
inconsistent {in-hardirq-W} -> {hardirq-on-W} usage.
ethtool/1985 [HC0[0]:SC0[1]:HE1:SE0] takes:
(&np->lock){++..}, at: [<
ffffffffa000c5fd>] nv_set_settings+0xc8/0x3de [forcedeth]
{in-hardirq-W} state was registered at:
[<
ffffffffffffffff>] 0xffffffffffffffff
irq event stamp: 3606
hardirqs last enabled at (3605): [<
ffffffff8068106f>] _spin_unlock_irqrestore+0x3f/0x68
hardirqs last disabled at (3604): [<
ffffffff80680d38>] _spin_lock_irqsave+0x13/0x46
softirqs last enabled at (3534): [<
ffffffff80246ba5>] __do_softirq+0xbc/0xc5
softirqs last disabled at (3606): [<
ffffffff80680b33>] _spin_lock_bh+0x11/0x41
other info that might help us debug this:
2 locks held by ethtool/1985:
#0: (rtnl_mutex){--..}, at: [<
ffffffff80596072>] rtnl_lock+0x12/0x14
#1: (_xmit_ETHER){-+..}, at: [<
ffffffffa000c5e8>] nv_set_settings+0xb3/0x3de [forcedeth]
stack backtrace:
Pid: 1985, comm: ethtool Not tainted 2.6.26-rc4 #28
Call Trace:
[<
ffffffff8025f190>] print_usage_bug+0x162/0x173
[<
ffffffff8025fa8b>] mark_lock+0x231/0x41f
[<
ffffffff802607cf>] __lock_acquire+0x4e7/0xcac
[<
ffffffff8025fe64>] ? trace_hardirqs_on+0xf1/0x115
[<
ffffffff80272c3a>] ? disable_irq_nosync+0x6f/0x7b
[<
ffffffff80261375>] lock_acquire+0x55/0x6e
[<
ffffffffa000c5fd>] ? :forcedeth:nv_set_settings+0xc8/0x3de
[<
ffffffff80680b15>] _spin_lock+0x2f/0x3c
[<
ffffffffa000c5fd>] :forcedeth:nv_set_settings+0xc8/0x3de
[<
ffffffff8058f8bb>] dev_ethtool+0x186/0xea3
[<
ffffffff8067f446>] ? mutex_lock_nested+0x243/0x275
[<
ffffffff8025df2b>] ? debug_mutex_free_waiter+0x46/0x4a
[<
ffffffff8067f469>] ? mutex_lock_nested+0x266/0x275
[<
ffffffff8058e1ce>] dev_ioctl+0x4eb/0x600
[<
ffffffff8068106f>] ? _spin_unlock_irqrestore+0x3f/0x68
[<
ffffffff80580f91>] sock_ioctl+0x1f5/0x202
[<
ffffffff802a322e>] vfs_ioctl+0x2a/0x77
[<
ffffffff802a34d6>] do_vfs_ioctl+0x25b/0x270
[<
ffffffff806807b6>] ? trace_hardirqs_on_thunk+0x35/0x3a
[<
ffffffff802a352d>] sys_ioctl+0x42/0x65
[<
ffffffff8021fffb>] system_call_after_swapgs+0x7b/0x80
This is caused by the following snippet in nv_set_settings:
netif_carrier_off(dev);
if (netif_running(dev)) {
nv_disable_irq(dev);
netif_tx_lock_bh(dev);
spin_lock(&np->lock);
/* stop engines */
nv_stop_rxtx(dev);
spin_unlock(&np->lock);
netif_tx_unlock_bh(dev);
}
Because of nv_disable_irq this is probably not really a problem
though (I guess) and replacing the spin_lock with spin_lock_irqsave
could keep interrupts disabled for a longer period of time because
of delays in nv_stop_rx and nv_stop_tx.
Signed-off-by: Tobias Diedrich <ranma+kernel@tdiedrich.de>
Cc: Ayaz Abdulla <aabdulla@nvidia.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
Krzysztof Halasa [Sun, 29 Jun 2008 19:48:11 +0000 (21:48 +0200)]
Add missing skb->dev assignment in Frame Relay RX code
Commit
4c13eb6657fe9ef7b4dc8f1a405c902e9e5234e0 ([ETH]: Make
eth_type_trans set skb->dev like the other *_type_trans) removed
skb->dev assignment from hdlc_fr.c:fr_rx(). Unfortunately it was also
needed for cases other than eth_type_trans().
Adding it back.
It's quite serious and may be a security risk as it causes a wrong
input interface indication (the physical hdlcX instead of logical
pvcX). Probably -stable class fix.
Signed-off-by: Krzysztof Halasa <khc@pm.waw.pl>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
Jeremy Fitzhardinge [Fri, 4 Jul 2008 05:10:18 +0000 (22:10 -0700)]
xen: fix address truncation in pte mfn<->pfn conversion
When converting the page number in a pte/pmd/pud/pgd between
machine and pseudo-physical addresses, the converted result was
being truncated at 32-bits. This caused failures on machines
with more than 4G of physical memory.
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Cc: "Christopher S. Aker" <caker@theshore.net>
Cc: Ian Campbell <Ian.Campbell@eu.citrix.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Ralf Baechle [Thu, 3 Jul 2008 22:28:35 +0000 (23:28 +0100)]
[MIPS] Fix bug in atomic_sub_if_positive.
The branch optimization fixes in 2.6.21 introduced a bug in
atomic_sub_if_positive that causes it to return even when the sc
instruction fails. The result is that e.g. down_trylock becomes unreliable
as the semaphore counter is not always decremented.
Original MUA-shredded patch from Morten Larsen <mlarsen@broadcom.com>.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Linus Torvalds [Fri, 4 Jul 2008 04:29:08 +0000 (21:29 -0700)]
Merge git://git./linux/kernel/git/gregkh/usb-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb-2.6:
USB: adding comment for ipaq forcing number of ports
USB: fix Oops on loading ipaq module since 2.6.26
USB: add a pl2303 device id
USB: another option device id
USB: don't lose disconnections during suspend
USB: fix interrupt disabling for HCDs with shared interrupt handlers
USB: New device ID for ftdi_sio driver
sisusbvga: Fix oops on disconnect.
USB: mass storage: new id for US_SC_CYP_ATACB
USB: ohci - record data toggle after unlink
USB: ehci - fix timer regression
USB: fix cdc-acm resume()
OHCI: Fix problem if SM501 and another platform driver is selected
Oliver Neukum [Thu, 3 Jul 2008 15:14:16 +0000 (17:14 +0200)]
USB: adding comment for ipaq forcing number of ports
The reason for forcing a number of ports should be documented.
Signed-off-by: Oliver Neukum <oneukum@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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