deliverable/linux.git
10 years agoMerge branch 'devel-stable' into for-next
Russell King [Thu, 3 Apr 2014 23:33:49 +0000 (00:33 +0100)] 
Merge branch 'devel-stable' into for-next

10 years agoMerge branches 'amba', 'fixes', 'misc', 'mmci', 'unstable/omap-dma' and 'unstable...
Russell King [Thu, 3 Apr 2014 23:33:32 +0000 (00:33 +0100)] 
Merge branches 'amba', 'fixes', 'misc', 'mmci', 'unstable/omap-dma' and 'unstable/sa11x0' into for-next

10 years agodmaengine: omap-dma: more consolidation of CCR register setup
Russell King [Tue, 14 Jan 2014 23:58:10 +0000 (23:58 +0000)] 
dmaengine: omap-dma: more consolidation of CCR register setup

We can move the handling of the DMA synchronisation control out of the
prepare functions; this can be pre-calculated when the DMA channel has
been allocated, so we don't need to duplicate this in both prepare
functions.

Acked-by: Tony Lindgren <tony@atomide.com>
Acked-by: Vinod Koul <vinod.koul@intel.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
10 years agodmaengine: omap-dma: move IRQ handling to omap-dma
Russell King [Tue, 10 Dec 2013 19:05:50 +0000 (19:05 +0000)] 
dmaengine: omap-dma: move IRQ handling to omap-dma

Move the interrupt handling for OMAP2+ into omap-dma, rather than using
the legacy support in the platform code.

Acked-by: Tony Lindgren <tony@atomide.com>
Acked-by: Vinod Koul <vinod.koul@intel.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
10 years agodmaengine: omap-dma: move register read/writes into omap-dma.c
Russell King [Tue, 10 Dec 2013 11:08:01 +0000 (11:08 +0000)] 
dmaengine: omap-dma: move register read/writes into omap-dma.c

Export the DMA register information from the SoC specific data, such
that we can access the registers directly in omap-dma.c, mapping the
register region ourselves as well.

Rather than calculating the DMA channel register in its entirety for
each access, we pre-calculate an offset base address for the allocated
DMA channel and then just use the appropriate register offset.

Acked-by: Tony Lindgren <tony@atomide.com>
Acked-by: Vinod Koul <vinod.koul@intel.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
10 years agoARM: omap: dma: get rid of 'p' allocation and clean up
Russell King [Fri, 8 Nov 2013 18:21:35 +0000 (18:21 +0000)] 
ARM: omap: dma: get rid of 'p' allocation and clean up

The omap_system_dma_plat_info structure is only seven words, it's not
worth the expense of kmalloc()'ing backing store for this only to
release it later.  Note that platform_device_add_data() copies the
data anyway.  Clean up the initialisation of this structure - we don't
even need code to initialise most of this structure.

Acked-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
10 years agoARM: omap: move dma channel allocation into plat-omap code
Russell King [Fri, 8 Nov 2013 18:10:42 +0000 (18:10 +0000)] 
ARM: omap: move dma channel allocation into plat-omap code

This really needs to be there, because otherwise the plat-omap code can
kfree() this data structure, and then re-use the pointer later.

Acked-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
10 years agoARM: omap: dma: get rid of errata global
Russell King [Fri, 8 Nov 2013 18:06:37 +0000 (18:06 +0000)] 
ARM: omap: dma: get rid of errata global

There's no need for this to be a global variable; move it into the
errata configuration function instead.

Acked-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
10 years agoARM: omap: clean up DMA register accesses
Russell King [Fri, 8 Nov 2013 18:04:06 +0000 (18:04 +0000)] 
ARM: omap: clean up DMA register accesses

We can do much better with this by using a structure to describe each
register, rather than code.

Acked-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
10 years agoARM: omap: remove almost-const variables
Russell King [Fri, 8 Nov 2013 14:53:35 +0000 (14:53 +0000)] 
ARM: omap: remove almost-const variables

dma_stride and dma_common_ch_start are only ever initialised to one
known value at initialisation, and are private to each of these files.
There's no point these being variables at all.

Acked-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
10 years agoARM: omap: remove references to disable_irq_lch
Russell King [Fri, 8 Nov 2013 14:48:55 +0000 (14:48 +0000)] 
ARM: omap: remove references to disable_irq_lch

The disable_irq_lch method is never actually used, so there's not much
point it existing; remove it.

Acked-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
10 years agodmaengine: omap-dma: cleanup errata 3.3 handling
Russell King [Wed, 6 Nov 2013 19:26:45 +0000 (19:26 +0000)] 
dmaengine: omap-dma: cleanup errata 3.3 handling

Provide a function to read the CSAC/CDAC register, working around the
OMAP 3.2/3.3 erratum (which requires two reads of the register if the
first returned zero.

Acked-by: Tony Lindgren <tony@atomide.com>
Acked-by: Vinod Koul <vinod.koul@intel.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
10 years agodmaengine: omap-dma: provide register read/write functions
Russell King [Wed, 6 Nov 2013 17:33:09 +0000 (17:33 +0000)] 
dmaengine: omap-dma: provide register read/write functions

Provide a pair of channel register accessors, and a pair of global
accessors for non-channel specific registers.

Acked-by: Tony Lindgren <tony@atomide.com>
Acked-by: Vinod Koul <vinod.koul@intel.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
10 years agodmaengine: omap-dma: use cached CCR value when enabling DMA
Russell King [Wed, 6 Nov 2013 17:18:42 +0000 (17:18 +0000)] 
dmaengine: omap-dma: use cached CCR value when enabling DMA

We don't need to read-modify-write the CCR register; we already know
what value it should contain at this point.  Use the cached CCR value
when setting the enable bit.

Acked-by: Tony Lindgren <tony@atomide.com>
Acked-by: Vinod Koul <vinod.koul@intel.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
10 years agodmaengine: omap-dma: move barrier to omap_dma_start_desc()
Russell King [Wed, 6 Nov 2013 17:15:16 +0000 (17:15 +0000)] 
dmaengine: omap-dma: move barrier to omap_dma_start_desc()

We don't need to issue a barrier for every segment of a DMA transfer;
doing this just once per descriptor will do.

Acked-by: Tony Lindgren <tony@atomide.com>
Acked-by: Vinod Koul <vinod.koul@intel.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
10 years agodmaengine: omap-dma: move clnk_ctrl setting to preparation functions
Russell King [Wed, 6 Nov 2013 17:12:30 +0000 (17:12 +0000)] 
dmaengine: omap-dma: move clnk_ctrl setting to preparation functions

Move the clnk_ctrl setup to the preparation functions, saving its
value in the omap_desc.  This only needs to be set once per descriptor,
not for each segment, so set it in omap_dma_start_desc() rather than
omap_dma_start().

Acked-by: Tony Lindgren <tony@atomide.com>
Acked-by: Vinod Koul <vinod.koul@intel.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
10 years agodmaengine: omap-dma: improve efficiency loading C.SA/C.EI/C.FI registers
Russell King [Sun, 3 Nov 2013 11:17:11 +0000 (11:17 +0000)] 
dmaengine: omap-dma: improve efficiency loading C.SA/C.EI/C.FI registers

The only thing which changes is which registers are written, so put this
in local variables instead.  This results in smaller code.

Acked-by: Tony Lindgren <tony@atomide.com>
Acked-by: Vinod Koul <vinod.koul@intel.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
10 years agodmaengine: omap-dma: consolidate clearing channel status register
Russell King [Sat, 2 Nov 2013 21:23:06 +0000 (21:23 +0000)] 
dmaengine: omap-dma: consolidate clearing channel status register

Consolidate clearing of the channel status register, rather than open
coding the same functionality in two places.

Acked-by: Tony Lindgren <tony@atomide.com>
Acked-by: Vinod Koul <vinod.koul@intel.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
10 years agodmaengine: omap-dma: move CCR buffering disable errata out of the fast path
Russell King [Sat, 2 Nov 2013 21:09:18 +0000 (21:09 +0000)] 
dmaengine: omap-dma: move CCR buffering disable errata out of the fast path

Since we record the CCR register in the dma transaction, we can move the
processing of the iframe buffering errata out of the omap_dma_start().
Move it to the preparation functions.

Acked-by: Tony Lindgren <tony@atomide.com>
Acked-by: Vinod Koul <vinod.koul@intel.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
10 years agodmaengine: omap-dma: provide register definitions
Russell King [Sat, 2 Nov 2013 19:57:06 +0000 (19:57 +0000)] 
dmaengine: omap-dma: provide register definitions

Provide our own set of more complete register definitions; this allows
us to get rid of the meaningless 1 << n constants scattered throughout
this code.

Acked-by: Tony Lindgren <tony@atomide.com>
Acked-by: Vinod Koul <vinod.koul@intel.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
10 years agodmaengine: omap-dma: consolidate setup of CCR
Russell King [Sat, 2 Nov 2013 19:16:09 +0000 (19:16 +0000)] 
dmaengine: omap-dma: consolidate setup of CCR

Consolidate the setup of the channel control register.  Prepare the
basic value in the preparation of the DMA descriptor, and write it into
the register upon descriptor execution.

Acked-by: Tony Lindgren <tony@atomide.com>
Acked-by: Vinod Koul <vinod.koul@intel.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
10 years agodmaengine: omap-dma: consolidate setup of CSDP
Russell King [Sat, 2 Nov 2013 18:51:53 +0000 (18:51 +0000)] 
dmaengine: omap-dma: consolidate setup of CSDP

Consolidate the setup of the channel source destination parameters
register.  This way, we calculate the required CSDP value when we setup
a transfer descriptor, and only write it to the device registers once
when we start the descriptor.

Acked-by: Tony Lindgren <tony@atomide.com>
Acked-by: Vinod Koul <vinod.koul@intel.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
10 years agodmaengine: omap-dma: move reading of dma position to omap-dma.c
Russell King [Sat, 2 Nov 2013 18:04:17 +0000 (18:04 +0000)] 
dmaengine: omap-dma: move reading of dma position to omap-dma.c

Read the current DMA position from the hardware directly rather than via
arch/arm/plat-omap/dma.c.

Acked-by: Tony Lindgren <tony@atomide.com>
Acked-by: Vinod Koul <vinod.koul@intel.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
10 years agodmaengine: omap-dma: control start/stop directly
Russell King [Sat, 2 Nov 2013 17:07:09 +0000 (17:07 +0000)] 
dmaengine: omap-dma: control start/stop directly

Program the non-cyclic mode DMA start/stop directly, rather than via
arch/arm/plat-omap/dma.c.

Acked-by: Tony Lindgren <tony@atomide.com>
Acked-by: Vinod Koul <vinod.koul@intel.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
10 years agodmaengine: omap-dma: consolidate writes to DMA registers
Russell King [Sat, 2 Nov 2013 14:41:42 +0000 (14:41 +0000)] 
dmaengine: omap-dma: consolidate writes to DMA registers

There's no need to keep writing registers which don't change value in
omap_dma_start_sg().  Move this into omap_dma_start_desc() and merge
the register updates together.

Acked-by: Tony Lindgren <tony@atomide.com>
Acked-by: Vinod Koul <vinod.koul@intel.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
10 years agodmaengine: omap-dma: program hardware directly
Russell King [Sat, 2 Nov 2013 13:26:57 +0000 (13:26 +0000)] 
dmaengine: omap-dma: program hardware directly

Program the transfer parameters directly into the hardware, rather
than using the functions in arch/arm/plat-omap/dma.c.

Acked-by: Tony Lindgren <tony@atomide.com>
Acked-by: Vinod Koul <vinod.koul@intel.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
10 years agodmaengine: omap-dma: provide a hook to get the underlying DMA platform ops
Russell King [Sat, 2 Nov 2013 13:00:03 +0000 (13:00 +0000)] 
dmaengine: omap-dma: provide a hook to get the underlying DMA platform ops

Provide and use a hook to obtain the underlying DMA platform operations
so that omap-dma.c can access the hardware more directly without
involving the legacy DMA driver.

Acked-by: Tony Lindgren <tony@atomide.com>
Acked-by: Vinod Koul <vinod.koul@intel.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
10 years agodmaengine: omap-dma: use devm_kzalloc() to allocate omap_dmadev.
Russell King [Sat, 2 Nov 2013 12:58:29 +0000 (12:58 +0000)] 
dmaengine: omap-dma: use devm_kzalloc() to allocate omap_dmadev.

Use devm_kzalloc() to allocate omap_dmadev() so that we don't need
complex error cleanup paths.

Acked-by: Tony Lindgren <tony@atomide.com>
Acked-by: Vinod Koul <vinod.koul@intel.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
10 years agoARM: Better virt_to_page() handling
Russell King [Tue, 25 Mar 2014 19:45:31 +0000 (19:45 +0000)] 
ARM: Better virt_to_page() handling

virt_to_page() is incredibly inefficient when virt-to-phys patching is
enabled.  This is because we end up with this calculation:

  page = &mem_map[asm virt_to_phys(addr) >> 12 - __pv_phys_offset >> 12]

in assembly.  The asm virt_to_phys() is equivalent this this operation:

  addr - PAGE_OFFSET + __pv_phys_offset

and we can see that because this is assembly, the compiler has no chance
to optimise some of that away.  This should reduce down to:

  page = &mem_map[(addr - PAGE_OFFSET) >> 12]

for the common cases.  Permit the compiler to make this optimisation by
giving it more of the information it needs - do this by providing a
virt_to_pfn() macro.

Another issue which makes this more complex is that __pv_phys_offset is
a 64-bit type on all platforms.  This is needlessly wasteful - if we
store the physical offset as a PFN, we can save a lot of work having
to deal with 64-bit values, which sometimes ends up producing incredibly
horrid code:

     a4c:       e3009000        movw    r9, #0
                        a4c: R_ARM_MOVW_ABS_NC  __pv_phys_offset
     a50:       e3409000        movt    r9, #0          ; r9 = &__pv_phys_offset
                        a50: R_ARM_MOVT_ABS     __pv_phys_offset
     a54:       e3002000        movw    r2, #0
                        a54: R_ARM_MOVW_ABS_NC  __pv_phys_offset
     a58:       e3402000        movt    r2, #0          ; r2 = &__pv_phys_offset
                        a58: R_ARM_MOVT_ABS     __pv_phys_offset
     a5c:       e5999004        ldr     r9, [r9, #4]    ; r9 = high word of __pv_phys_offset
     a60:       e3001000        movw    r1, #0
                        a60: R_ARM_MOVW_ABS_NC  mem_map
     a64:       e592c000        ldr     ip, [r2]        ; ip = low word of __pv_phys_offset

Reviewed-by: Nicolas Pitre <nico@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
10 years agoARM: 8007/1: Remove extraneous kcmp syscall ignore
Christopher Covington [Wed, 19 Mar 2014 17:12:25 +0000 (18:12 +0100)] 
ARM: 8007/1: Remove extraneous kcmp syscall ignore

The kcmp system call was ported to ARM in
commit 3f7d1fe108dbaefd0c57a41753fc2c90b395f458
"ARM: 7665/1: Wire up kcmp syscall".

Fixes: 3f7d1fe108db ("ARM: 7665/1: Wire up kcmp syscall")
Signed-off-by: Christopher Covington <cov@codeaurora.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
10 years agoARM: 8006/1: Remove redundant code
Alexander Shiyan [Sun, 16 Mar 2014 04:54:57 +0000 (05:54 +0100)] 
ARM: 8006/1: Remove redundant code

Statements following return will never be executed.
This patch removes this code.

Signed-off-by: Alexander Shiyan <shc_work@mail.ru>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
10 years agoMerge branch 'uprobes-v7' of git://git.linaro.org/people/dave.long/linux into devel...
Russell King [Wed, 19 Mar 2014 20:15:46 +0000 (20:15 +0000)] 
Merge branch 'uprobes-v7' of git://git.linaro.org/people/dave.long/linux into devel-stable

This patch series adds basic uprobes support to ARM. It is based on
patches developed earlier by Rabin Vincent. That approach of adding
hooks into the kprobes instruction parsing code was not well received.
This approach separates the ARM instruction parsing code in kprobes out
into a separate set of functions which can be used by both kprobes and
uprobes. Both kprobes and uprobes then provide their own semantic action
tables to process the results of the parsing.

10 years agoARM: add uprobes support
David A. Long [Fri, 7 Mar 2014 16:23:04 +0000 (11:23 -0500)] 
ARM: add uprobes support

Using Rabin Vincent's ARM uprobes patches as a base, enable uprobes
support on ARM.

Caveats:

 - Thumb is not supported

Signed-off-by: Rabin Vincent <rabin@rab.in>
Signed-off-by: David A. Long <dave.long@linaro.org>
10 years agoARM: Make arch_specific_insn a define for new arch_probes_insn structure
David A. Long [Thu, 6 Mar 2014 02:41:29 +0000 (21:41 -0500)] 
ARM: Make arch_specific_insn a define for new arch_probes_insn structure

Because the common underlying code for ARM kprobes and uprobes needs
to share a common architecrure-specific context structure, and because
the generic kprobes include file insists on defining this to a dummy
structure when kprobes is not configured, a new common structure is
required which can exist when uprobes is configured without kprobes.
In this case kprobes will define a dummy structure, but without the
define aliasing the two structure tags it will not affect uprobes and
the shared probes code.

Signed-off-by: David A. Long <dave.long@linaro.org>
Acked-by: Jon Medhurst <tixy@linaro.org>
10 years agoARM: Add an emulate flag to the kprobes/uprobes instruction decode functions
David A. Long [Thu, 6 Mar 2014 02:40:12 +0000 (21:40 -0500)] 
ARM: Add an emulate flag to the kprobes/uprobes instruction decode functions

Add an emulate flag into the instruction interpreter, primarily for uprobes
support.

Signed-off-by: David A. Long <dave.long@linaro.org>
Acked-by: Jon Medhurst <tixy@linaro.org>
10 years agoARM: Change the remaining shared kprobes/uprobes symbols to something generic
David A. Long [Thu, 6 Mar 2014 23:12:07 +0000 (18:12 -0500)] 
ARM: Change the remaining shared kprobes/uprobes symbols to something generic

Any more ARM kprobes/uprobes symbols which have "kprobe" in the name must be
changed to the more generic "probes" or other non-kprobes specific symbol.

Signed-off-by: David A. Long <dave.long@linaro.org>
Acked-by: Jon Medhurst <tixy@linaro.org>
10 years agoARM: Rename the shared kprobes/uprobe return value enum
David A. Long [Thu, 6 Mar 2014 02:23:42 +0000 (21:23 -0500)] 
ARM: Rename the shared kprobes/uprobe return value enum

Change the name of kprobes_insn to probes_insn so it can be shared between
kprobes and uprobes without confusion.

Signed-off-by: David A. Long <dave.long@linaro.org>
Acked-by: Jon Medhurst <tixy@linaro.org>
10 years agoARM: Change more ARM kprobes symbol names to something more generic
David A. Long [Thu, 6 Mar 2014 02:20:25 +0000 (21:20 -0500)] 
ARM: Change more ARM kprobes symbol names to something more generic

Change kprobe_emulate_none, kprobe_simulate_nop, and arm_kprobe_decode_init
function names to something more appropriate for code being shared
outside of the kprobes subsystem. Also, move the new arm_probes_decode_init
declaration out of the kprobes.h include file and into the probes.h include file.

Signed-off-by: David A. Long <dave.long@linaro.org>
Acked-by: Jon Medhurst <tixy@linaro.org>
10 years agoARM: Make the kprobes condition_check symbol names more generic
David A. Long [Thu, 6 Mar 2014 02:17:23 +0000 (21:17 -0500)] 
ARM: Make the kprobes condition_check symbol names more generic

In preparation for sharing the ARM kprobes instruction interpreting
code with uprobes, make the symbols names less kprobes-specific.

Signed-off-by: David A. Long <dave.long@linaro.org>
Acked-by: Jon Medhurst <tixy@linaro.org>
10 years agoARM: Remove use of struct kprobe from generic probes code
David A. Long [Fri, 7 Mar 2014 16:19:32 +0000 (11:19 -0500)] 
ARM: Remove use of struct kprobe from generic probes code

Change the generic ARM probes code to pass in the opcode and architecture-specific
structure separately instead of using struct kprobe, so we do not pollute
code being used only for uprobes or other non-kprobes instruction
interpretation.

Signed-off-by: David A. Long <dave.long@linaro.org>
Acked-by: Jon Medhurst <tixy@linaro.org>
10 years agoARM: use a function table for determining instruction interpreter action
David A. Long [Thu, 6 Mar 2014 23:06:43 +0000 (18:06 -0500)] 
ARM: use a function table for determining instruction interpreter action

Make the instruction interpreter call back to semantic action functions
through a function pointer array provided by the invoker.  The interpreter
decodes the instructions into groups and uses the group number to index
into the supplied array.  kprobes and uprobes code will each supply their
own array of functions.

Signed-off-by: David A. Long <dave.long@linaro.org>
Acked-by: Jon Medhurst <tixy@linaro.org>
10 years agoARM: move generic thumb instruction parsing code to new files for use by other feature
David A. Long [Thu, 6 Mar 2014 02:06:29 +0000 (21:06 -0500)] 
ARM: move generic thumb instruction parsing code to new files for use by other feature

Move the thumb version of the kprobes instruction parsing code into more generic
files from where it can be used by uprobes and possibly other subsystems. The
symbol names will be made more generic in a subsequent part of this patchset.

Signed-off-by: David A. Long <dave.long@linaro.org>
Acked-by: Jon Medhurst <tixy@linaro.org>
10 years agoARM: Move generic arm instruction parsing code to new files for sharing between features
David A. Long [Fri, 7 Mar 2014 16:16:10 +0000 (11:16 -0500)] 
ARM: Move generic arm instruction parsing code to new files for sharing between features

Move the arm version of the kprobes instruction parsing code into more generic
files from where it can be used by uprobes and possibly other subsystems. The
symbol names will be made more generic in a subsequent part of this patchset.

Signed-off-by: David A. Long <dave.long@linaro.org>
Acked-by: Jon Medhurst <tixy@linaro.org>
10 years agoARM: move shared uprobe/kprobe definitions into new include file
David A. Long [Thu, 6 Mar 2014 22:53:34 +0000 (17:53 -0500)] 
ARM: move shared uprobe/kprobe definitions into new include file

Separate the kprobe-only definitions from the definitions needed by
both kprobes and uprobes.

Signed-off-by: David A. Long <dave.long@linaro.org>
Acked-by: Jon Medhurst <tixy@linaro.org>
10 years agouprobes: allow ignoring of probe hits
David A. Long [Mon, 3 Feb 2014 19:25:49 +0000 (14:25 -0500)] 
uprobes: allow ignoring of probe hits

Allow arches to decided to ignore a probe hit.  ARM will use this to
only call handlers if the conditions to execute a conditionally executed
instruction are satisfied.

Signed-off-by: David A. Long <dave.long@linaro.org>
Acked-by: Oleg Nesterov <oleg@redhat.com>
10 years agoARM: Fix missing includes in kprobes sources
David A. Long [Thu, 6 Mar 2014 23:17:52 +0000 (18:17 -0500)] 
ARM: Fix missing includes in kprobes sources

Make sure includes in ARM kprobes sources are done explicitly. Do not
rely on includes from other includes.

Signed-off-by: David A. Long <dave.long@linaro.org>
Acked-by: Jon Medhurst <tixy@linaro.org>
10 years agouprobes: Kconfig dependency fix
David A. Long [Fri, 7 Mar 2014 15:32:22 +0000 (10:32 -0500)] 
uprobes: Kconfig dependency fix

Suggested change from Oleg Nesterov. Fixes incomplete dependencies
for uprobes feature.

Signed-off-by: David A. Long <dave.long@linaro.org>
Acked-by: Oleg Nesterov <oleg@redhat.com>
10 years agoARM: 8004/1: [SCSI]: remove deprecated IRQF_DISABLED
Michael Opdenacker [Wed, 5 Mar 2014 05:23:13 +0000 (06:23 +0100)] 
ARM: 8004/1: [SCSI]: remove deprecated IRQF_DISABLED

This patch removes the use of the IRQF_DISABLED flag
from drivers/scsi/arm

It's a NOOP since 2.6.35 and it will be removed one day.

Signed-off-by: Michael Opdenacker <michael.opdenacker@free-electrons.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
10 years agoARM: 8003/1: w90x900: remove deprecated IRQF_DISABLED
Michael Opdenacker [Tue, 4 Mar 2014 21:11:56 +0000 (22:11 +0100)] 
ARM: 8003/1: w90x900: remove deprecated IRQF_DISABLED

This patch removes the use of the IRQF_DISABLED flag
from arch/arm/mach-w90x900/time.c

It's a NOOP since 2.6.35 and it will be removed one day.

Signed-off-by: Michael Opdenacker <michael.opdenacker@free-electrons.com>
Acked-by: Wan zongshun <mcuos.com@gmail.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
10 years agoARM: 8002/1: spear: remove deprecated IRQF_DISABLED
Michael Opdenacker [Tue, 4 Mar 2014 21:09:18 +0000 (22:09 +0100)] 
ARM: 8002/1: spear: remove deprecated IRQF_DISABLED

This patch removes the use of the IRQF_DISABLED flag
from arch/arm/mach-spear/time.c

It's a NOOP since 2.6.35 and it will be removed one day.

Signed-off-by: Michael Opdenacker <michael.opdenacker@free-electrons.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
10 years agoARM: 8001/1: mmp: remove deprecated IRQF_DISABLED
Michael Opdenacker [Tue, 4 Mar 2014 21:07:26 +0000 (22:07 +0100)] 
ARM: 8001/1: mmp: remove deprecated IRQF_DISABLED

This patch removes the use of the IRQF_DISABLED flag
from arch/arm/mach-mmp/time.c

It's a NOOP since 2.6.35 and it will be removed one day.

Signed-off-by: Michael Opdenacker <michael.opdenacker@free-electrons.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
10 years agoARM: 8000/1: misc: remove deprecated IRQF_DISABLED
Michael Opdenacker [Tue, 4 Mar 2014 21:04:50 +0000 (22:04 +0100)] 
ARM: 8000/1: misc: remove deprecated IRQF_DISABLED

This patch removes the use of the IRQF_DISABLED flag
from miscellaneous code in mach-xxx and plat-xxx

This flag is a NOOP since 2.6.35 and it will be removed one day.

Signed-off-by: Michael Opdenacker <michael.opdenacker@free-electrons.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Acked-by: Greg Ungerer <gerg@uclinux.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
10 years agoARM: 7999/1: arch/arm/mach-lpc32xx-remove-irqf-disabled
Michael Opdenacker [Tue, 4 Mar 2014 21:02:14 +0000 (22:02 +0100)] 
ARM: 7999/1: arch/arm/mach-lpc32xx-remove-irqf-disabled

This patch removes the use of the IRQF_DISABLED flag
from arch/arm/mach-lpc32xx/timer.c

It's a NOOP since 2.6.35 and it will be removed one day.

Signed-off-by: Michael Opdenacker <michael.opdenacker@free-electrons.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
10 years agoARM: 7998/1: IXP4xx: remove deprecated IRQF_DISABLED
Michael Opdenacker [Tue, 4 Mar 2014 20:59:03 +0000 (21:59 +0100)] 
ARM: 7998/1: IXP4xx: remove deprecated IRQF_DISABLED

This patch removes the use of the IRQF_DISABLED flag
from code in arch/arm/mach-ixp4xx

It's a NOOP since 2.6.35 and it will be removed one day.

Signed-off-by: Michael Opdenacker <michael.opdenacker@free-electrons.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
10 years agoARM: 7997/1: cns3xxx: remove deprecated IRQF_DISABLED
Michael Opdenacker [Tue, 4 Mar 2014 20:56:10 +0000 (21:56 +0100)] 
ARM: 7997/1: cns3xxx: remove deprecated IRQF_DISABLED

This patch removes the use of the IRQF_DISABLED flag
from arch/arm/mach-cns3xxx/core.c

It's a NOOP since 2.6.35 and it will be removed one day.

Signed-off-by: Michael Opdenacker <michael.opdenacker@free-electrons.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
10 years agoARM: 7996/1: floppy.h: remove deprecated IRQF_DISABLED
Michael Opdenacker [Tue, 4 Mar 2014 20:51:44 +0000 (21:51 +0100)] 
ARM: 7996/1: floppy.h: remove deprecated IRQF_DISABLED

This patch removes the use of the IRQF_DISABLED flag
in arch/arm/include/asm/floppy.h

It's a NOOP since 2.6.35 and it will be removed one day.

Signed-off-by: Michael Opdenacker <michael.opdenacker@free-electrons.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
10 years agoARM: 7995/1: footbridge: remove obsolete IRQF_DISABLED
Michael Opdenacker [Tue, 4 Mar 2014 20:45:48 +0000 (21:45 +0100)] 
ARM: 7995/1: footbridge: remove obsolete IRQF_DISABLED

This patch removes the IRQF_DISABLED flag from footbridge
code. It's a NOOP since 2.6.35.

Signed-off-by: Michael Opdenacker <michael.opdenacker@free-electrons.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
10 years agoARM: 7993/1: mm/memblock: add memblock_get_current_limit
Laura Abbott [Thu, 27 Feb 2014 00:23:43 +0000 (01:23 +0100)] 
ARM: 7993/1: mm/memblock: add memblock_get_current_limit

Apart from setting the limit of memblock, it's also useful to be able
to get the limit to avoid recalculating it every time. Add the function
to do so.

Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Acked-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Acked-by: Andrew Morton <akpm@linux-foundation.org>
Acked-by: Nicolas Pitre <nico@linaro.org>
Signed-off-by: Laura Abbott <lauraa@codeaurora.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
10 years agoARM: 7992/1: boot: compressed: ignore bswapsdi2.S
Mark Rutland [Wed, 26 Feb 2014 16:21:26 +0000 (17:21 +0100)] 
ARM: 7992/1: boot: compressed: ignore bswapsdi2.S

Commit 017f161a55b4 (ARM: 7877/1: use built-in byte swap function) added
bswapsdi2.{o,S} to arch/arm/boot/compressed/Makefile, but didn't update
the .gitignore. Thus after a a build git status shows bswapsdi2.S as a
new file, which is a little annoying.

This patch updates arch/arm/boot/compressed/.gitignore to ignore
bswapsdi2.S, as we already do for ashldi3.S and others.

Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Acked-by: Nicolas Pitre <nico@linaro.org>
Acked-by: Kim Phillips <kim.phillips@freescale.com>
Cc: David Woodhouse <David.Woodhouse@intel.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
10 years agoARM: 7991/1: sa1100: fix compile problem on Collie
Linus Walleij [Tue, 25 Feb 2014 21:41:41 +0000 (22:41 +0100)] 
ARM: 7991/1: sa1100: fix compile problem on Collie

Due to a problem in the MFD Kconfig it was not possible to
compile the UCB battery driver for the Collie SA1100 system,
in turn making it impossible to compile in the battery driver.
(See patch "mfd: include all drivers in subsystem menu".)

After fixing the MFD Kconfig (separate patch) a compile error
appears in the Collie battery driver due to the <mach/collie.h>
implicitly requiring <mach/hardware.h> through <linux/gpio.h>
via <mach/gpio.h> prior to commit
40ca061b "ARM: 7841/1: sa1100: remove complex GPIO interface".

Fix this up by including the required header into
<mach/collie.h>.

Cc: stable@vger.kernel.org
Cc: Andrea Adami <andrea.adami@gmail.com>
Cc: Dmitry Eremin-Solenikov <dbaryshkov@gmail.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
10 years agoARM: fix noMMU kallsyms symbol filtering
Russell King [Wed, 26 Feb 2014 19:40:46 +0000 (19:40 +0000)] 
ARM: fix noMMU kallsyms symbol filtering

With noMMU, CONFIG_PAGE_OFFSET was not being set correctly.  As there's
no MMU, PAGE_OFFSET should be equal to PHYS_OFFSET in all cases.  This
commit makes that explicit.

Since we do this, we don't need to mess around in asm/memory.h with
ifdefs to sort this out, so let's get rid of that, and there's no point
offering the "Memory split" option for noMMU as that's meaningless
there.

Fixes: b9b32bf70f2f ("ARM: use linker magic for vectors and vector stubs")
Cc: <stable@vger.kernel.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
10 years agoMerge branch 'for-rmk/perf' of git://git.kernel.org/pub/scm/linux/kernel/git/will...
Russell King [Fri, 7 Mar 2014 14:42:35 +0000 (14:42 +0000)] 
Merge branch 'for-rmk/perf' of git://git./linux/kernel/git/will/linux into devel-stable

  * Support for Qualcomm Krait processors (run perf on your phone!)
  * Support for Cortex-A12 (run perf stat on your FPGA!)
  * Support for perf_sample_event_took, allowing us to automatically decrease
    the sample rate if we can't handle the PMU interrupts quickly enough
    (run perf record on your FPGA!).

As part of the Krait support, we also gain support for PPI generation by
the PMU.

10 years agoLinux 3.14-rc5
Linus Torvalds [Mon, 3 Mar 2014 02:56:16 +0000 (18:56 -0800)] 
Linux 3.14-rc5

10 years agoMerge branch 'drm-fixes' of git://people.freedesktop.org/~airlied/linux
Linus Torvalds [Sun, 2 Mar 2014 23:25:45 +0000 (15:25 -0800)] 
Merge branch 'drm-fixes' of git://people.freedesktop.org/~airlied/linux

Pull drm fixes from Dave Airlie:
 "Not a huge amount happening, some MAINTAINERS updates, radeon, vmwgfx
  and tegra fixes"

* 'drm-fixes' of git://people.freedesktop.org/~airlied/linux:
  drm/vmwgfx: avoid null pointer dereference at failure paths
  drm/vmwgfx: Make sure backing mobs are cleared when allocated. Update driver date.
  drm/vmwgfx: Remove some unused surface formats
  drm/radeon: enable speaker allocation setup on dce3.2
  drm/radeon: change audio enable logic
  drm/radeon: fix audio disable on dce6+
  drm/radeon: free uvd ring on unload
  drm/radeon: disable pll sharing for DP on DCE4.1
  drm/radeon: fix missing bo reservation
  drm/radeon: print the supported atpx function mask
  MAINTAINERS: update drm git tree entry
  MAINTAINERS: add entry for drm radeon driver
  drm/tegra: Add guard to avoid double disable/enable of RGB outputs
  gpu: host1x: do not check previously handled gathers
  drm/tegra: fix typo 'CONFIG_TEGRA_DRM_FBDEV'

10 years agoMerge tag 'usb-3.14-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb
Linus Torvalds [Sun, 2 Mar 2014 23:15:07 +0000 (15:15 -0800)] 
Merge tag 'usb-3.14-rc5' of git://git./linux/kernel/git/gregkh/usb

Pull USB fixes from Greg KH:
 "Here are 2 USB patches for 3.14-rc5, one a new device id, and the
  other fixes a reported problem with threaded irqs and the USB EHCI
  driver"

* tag 'usb-3.14-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb:
  usb: ehci: fix deadlock when threadirqs option is used
  USB: ftdi_sio: add Cressi Leonardo PID

10 years agoMerge tag 'driver-core-3.14-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Torvalds [Sun, 2 Mar 2014 23:13:41 +0000 (15:13 -0800)] 
Merge tag 'driver-core-3.14-rc5' of git://git./linux/kernel/git/gregkh/driver-core

Pull sysfs fix from Greg KH:
 "Here is a single sysfs fix for 3.14-rc5.  It fixes a reported problem
  with the namespace code in sysfs"

* tag 'driver-core-3.14-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core:
  sysfs: fix namespace refcnt leak

10 years agoMerge tag 'staging-3.14-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh...
Linus Torvalds [Sun, 2 Mar 2014 23:12:54 +0000 (15:12 -0800)] 
Merge tag 'staging-3.14-rc5' of git://git./linux/kernel/git/gregkh/staging

Pull staging tree fixes from Greg KH:
 "Here are a few IIO fixes, and a new device id for a staging driver for
  3.14-rc5.  All have been in linux-next for a while, I did a final
  merge to get the IIO fixes into this tree, they were incorrectly in
  the char-misc tree for a few weeks, and I forgot to tell you to pull
  them from there.  This makes it a single pull request for you"

* tag 'staging-3.14-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging:
  staging: r8188eu: Add new device ID
  staging:iio:adc:MXS:LRADC: fix touchscreen statemachine
  iio:gyro: bug on L3GD20H gyroscope support
  iio: cm32181: Change cm32181 ambient light sensor driver
  iio: cm36651: Fix read/write integration time function.

10 years agoMerge branch 'drm-fixes-3.14' of git://people.freedesktop.org/~agd5f/linux into drm...
Dave Airlie [Sun, 2 Mar 2014 23:04:41 +0000 (09:04 +1000)] 
Merge branch 'drm-fixes-3.14' of git://people.freedesktop.org/~agd5f/linux into drm-fixes

more radeon fixes

* 'drm-fixes-3.14' of git://people.freedesktop.org/~agd5f/linux:
  drm/radeon: enable speaker allocation setup on dce3.2
  drm/radeon: change audio enable logic
  drm/radeon: fix audio disable on dce6+
  drm/radeon: free uvd ring on unload
  drm/radeon: disable pll sharing for DP on DCE4.1
  drm/radeon: fix missing bo reservation
  drm/radeon: print the supported atpx function mask

10 years agoMerge iio fixes into staging-linus
Greg Kroah-Hartman [Sun, 2 Mar 2014 22:04:01 +0000 (14:04 -0800)] 
Merge iio fixes into staging-linus

These I forgot about before, but need to get into 3.14-final.

Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
10 years agoMerge branch 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sun, 2 Mar 2014 17:37:07 +0000 (11:37 -0600)] 
Merge branch 'perf-urgent-for-linus' of git://git./linux/kernel/git/tip/tip

Pull perf fixes from Ingo Molnar:
 "Misc fixes, most of them on the tooling side"

* 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  perf tools: Fix strict alias issue for find_first_bit
  perf tools: fix BFD detection on opensuse
  perf: Fix hotplug splat
  perf/x86: Fix event scheduling
  perf symbols: Destroy unused symsrcs
  perf annotate: Check availability of annotate when processing samples

10 years agoMerge tag 'vmwgfx-fixes-3.14-2014-03-02' of git://people.freedesktop.org/~thomash...
Dave Airlie [Sun, 2 Mar 2014 10:54:31 +0000 (20:54 +1000)] 
Merge tag 'vmwgfx-fixes-3.14-2014-03-02' of git://people.freedesktop.org/~thomash/linux into drm-fixes

A couple of minor fixes.

Pull request of 2014-03-02

* tag 'vmwgfx-fixes-3.14-2014-03-02' of git://people.freedesktop.org/~thomash/linux:
  drm/vmwgfx: avoid null pointer dereference at failure paths
  drm/vmwgfx: Make sure backing mobs are cleared when allocated. Update driver date.
  drm/vmwgfx: Remove some unused surface formats

10 years agodrm/vmwgfx: avoid null pointer dereference at failure paths
Alexey Khoroshilov [Fri, 28 Feb 2014 21:20:18 +0000 (01:20 +0400)] 
drm/vmwgfx: avoid null pointer dereference at failure paths

vmw_takedown_otable_base() and vmw_mob_unbind() check for
potential vmw_fifo_reserve() failure and print error message,
but then immediately dereference NULL pointer.

Found by Linux Driver Verification project (linuxtesting.org).

Signed-off-by: Alexey Khoroshilov <khoroshilov@ispras.ru>
Reviewed-by: Thomas Hellstrom <thellstrom@vmware.com>
10 years agodrm/vmwgfx: Make sure backing mobs are cleared when allocated. Update driver date.
Thomas Hellstrom [Fri, 28 Feb 2014 12:33:21 +0000 (13:33 +0100)] 
drm/vmwgfx: Make sure backing mobs are cleared when allocated. Update driver date.

Backing mob contents is propagated to user-space, so make sure backing
mobs are cleared when allocated. This also accidently fix rendering errors
with celestia when emulating legacy mode.

Also update driver date.

Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com>
Reviewed-by: Brian Paul <brianp@vmware.com>
10 years agodrm/vmwgfx: Remove some unused surface formats
Thomas Hellstrom [Fri, 28 Feb 2014 12:31:04 +0000 (13:31 +0100)] 
drm/vmwgfx: Remove some unused surface formats

These formats are deprecated.

Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com>
Reviewed-by: Brian Paul <brianp@vmware.com>
10 years agoMerge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sun, 2 Mar 2014 04:48:14 +0000 (22:48 -0600)] 
Merge branch 'x86-urgent-for-linus' of git://git./linux/kernel/git/tip/tip

Pull x86 fixes from Peter Anvin:
 "The VMCOREINFO patch I'll pushing for this release to avoid having a
  release with kASLR and but without that information.

  I was hoping to include the FPU patches from Suresh, but ran into a
  problem (see other thread); will try to make them happen next week"

* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86, kaslr: add missed "static" declarations
  x86, kaslr: export offset in VMCOREINFO ELF notes

10 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending
Linus Torvalds [Sun, 2 Mar 2014 03:33:09 +0000 (21:33 -0600)] 
Merge git://git./linux/kernel/git/nab/target-pending

Pull SCSI target fixes from Nicholas Bellinger:
 "The bulk of the series are bugfixes for qla2xxx target NPIV support
  that went in for v3.14-rc1.  Also included are a few DIF related
  fixes, a qla2xxx fix (Cc'ed to stable) from Greg W., and vhost/scsi
  protocol version related fix from Venkatesh.

  Also just a heads up that a series to address a number of issues with
  iser-target active I/O reset/shutdown is still being tested, and will
  be included in a separate -rc6 PULL request"

* git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending:
  vhost/scsi: Check LUN structure byte 0 is set to 1, per spec
  qla2xxx: Fix kernel panic on selective retransmission request
  Target/sbc: Don't use sg as iterator in sbc_verify_read
  target: Add DIF sense codes in transport_generic_request_failure
  target/sbc: Fix sbc_dif_copy_prot addr offset bug
  tcm_qla2xxx: Fix NAA formatted name for NPIV WWPNs
  tcm_qla2xxx: Perform configfs depend/undepend for base_tpg
  tcm_qla2xxx: Add NPIV specific enable/disable attribute logic
  qla2xxx: Check + fail when npiv_vports_inuse exists in shutdown
  qla2xxx: Fix qlt_lport_register base_vha callback race

10 years agoMerge branch 'fixes' of git://git.infradead.org/users/vkoul/slave-dma
Linus Torvalds [Sun, 2 Mar 2014 03:30:43 +0000 (21:30 -0600)] 
Merge branch 'fixes' of git://git.infradead.org/users/vkoul/slave-dma

Pull slave-dma fixes from Vinod Koul:
 "This request brings you two small fixes.  First one for fixing
  dereference of freed descriptor and second for fixing sdma bindings
  for it to work for imx25.

  I was planning to send this about 10days ago but then I had to proceed
  on my paternity leave and didnt get chance to send this.  Now got a
  bit of time from dady duties :)"

* 'fixes' of git://git.infradead.org/users/vkoul/slave-dma:
  dma: sdma: Add imx25 compatible
  dma: ste_dma40: don't dereference free:d descriptor

10 years agoMerge tag 'pm+acpi-3.14-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael...
Linus Torvalds [Sun, 2 Mar 2014 03:28:38 +0000 (21:28 -0600)] 
Merge tag 'pm+acpi-3.14-rc5' of git://git./linux/kernel/git/rafael/linux-pm

Pull ACPI and power management fixes from Rafael Wysocki:
 "These three commits fix a recent intel_pstate regression and two old
  bugs that should be fixed in -stable too, one in the ACPI processor
  driver and one in the firmare loader.

  Specifics:

   - One of the recent intel_pstate driver fixes introduced a rounding
     error that on some systems causes the frequency to be stuck at the
     lowest level forever.  Fix from Dirk Brandewie.

   - The firmware_class driver's PM notifier doesn't handle the
     PM_RESTORE_PREPARE event during hibernation image restore and that
     leads to a deadlock on umhelper_sem in __usermodehelper_disable().
     Fix from Sebastian Capella.

   - acpi_processor_set_throttling() abuses set_cpus_allowed_ptr() in a
     nasty way which triggers the WARN_ON_ONCE() in wq_worker_waking_up()
     among other things.  Fix from Lan Tianyu"

* tag 'pm+acpi-3.14-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
  ACPI / processor: Rework processor throttling with work_on_cpu()
  PM / hibernate: Fix restore hang in freeze_processes()
  intel_pstate: Change busy calculation to use fixed point math.

10 years agoMerge tag 'perf-urgent-for-mingo' of git://git.kernel.org/pub/scm/linux/kernel/git...
Ingo Molnar [Sat, 1 Mar 2014 09:13:25 +0000 (10:13 +0100)] 
Merge tag 'perf-urgent-for-mingo' of git://git./linux/kernel/git/acme/linux into perf/urgent

Pull perf/urgent build fixes for certain distro environments, from Arnaldo Carvalho de Melo:

  * Problem on recent gcc on x86-32 related to strict alias issue for
    find_first_bit (Jiri Olsa).

  * OpenSuSE: BFD detection problems related to not explicitely listing all
    required libraries (Andi Kleen)

Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
10 years agoMerge tag 'fixes-for-3.14d' of git://git.kernel.org/pub/scm/linux/kernel/git/jic23...
Greg Kroah-Hartman [Sat, 1 Mar 2014 01:08:03 +0000 (17:08 -0800)] 
Merge tag 'fixes-for-3.14d' of git://git./linux/kernel/git/jic23/iio into staging-linus

Jonathan writes:

Fourth set of IIO fixes for the 3.14 kernel.

A single line patch fixing a regression that was introduced in 3.13 in the
reworking of the mxs touch screen and ADC drivers to be interrupt rather
than polling driven.  It resulted in a stray double reporting of the release
coordinate in the touch screen driver.  The bug lay in the adc side
of the driver which left the statemachine in the wrong state.

10 years agoMAINTAINERS: add maintainer entry for Armada DRM driver
Russell King [Fri, 28 Feb 2014 22:40:53 +0000 (22:40 +0000)] 
MAINTAINERS: add maintainer entry for Armada DRM driver

Add a maintainers entry for the Armada DRM driver.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
10 years agoMerge tag 'dm-3.14-fixes-1' of git://git.kernel.org/pub/scm/linux/kernel/git/device...
Linus Torvalds [Fri, 28 Feb 2014 19:53:33 +0000 (11:53 -0800)] 
Merge tag 'dm-3.14-fixes-1' of git://git./linux/kernel/git/device-mapper/linux-dm

Pull device mapper fixes from Mike Snitzer:
 "A few dm-cache fixes, an invalid ioctl handling fix for dm multipath,
  a couple immutable biovec fixups for dm mirror, and a few dm-thin
  fixes.

  There will likely be additional dm-thin metadata and data resize fixes
  to include in 3.14-rc6 next week.

  Note to stable-minded folks: Immutable biovecs were introduced in
  3.14, so the related fixups for dm mirror are not needed in stable@
  kernels"

* tag 'dm-3.14-fixes-1' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm:
  dm cache: fix truncation bug when mapping I/O to >2TB fast device
  dm thin: allow metadata space larger than supported to go unused
  dm mpath: fix stalls when handling invalid ioctls
  dm thin: fix the error path for the thin device constructor
  dm raid1: fix immutable biovec related BUG when retrying read bio
  dm io: fix I/O to multiple destinations
  dm thin: avoid metadata commit if a pool's thin devices haven't changed
  dm cache: do not add migration to completed list before unhooking bio
  dm cache: move hook_info into common portion of per_bio_data structure

10 years agoMerge tag 'sound-3.14-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai...
Linus Torvalds [Fri, 28 Feb 2014 19:50:32 +0000 (11:50 -0800)] 
Merge tag 'sound-3.14-rc5' of git://git./linux/kernel/git/tiwai/sound

Pull sound fixes from Takashi Iwai:
 "It's a bad habit to get a higher volume of fixes often lately, but
  things happen again.

  All commits found here are real bug fixes, and are mostly trivial.
  Most of changes in ASoC are the fixes for enum items due to the wrong
  API usages, in addition to a few DAPM mutex deadlock and other fixes.
  In HD-audio, only fixups for HP laptops.  Although diffstat shows
  much, the changes are simple: there are just so many different device
  entries there"

* tag 'sound-3.14-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound:
  ASoC: sta32x: Fix wrong enum for limiter2 release rate
  ASoC: da732x: Mark DC offset control registers volatile
  ALSA: hda/realtek - Add more entry for enable HP mute led
  ALSA: hda - Add a fixup for HP Folio 13 mute LED
  ASoC: wm8958-dsp: Fix firmware block loading
  ASoC: sta32x: Fix cache sync
  ALSA: hda/realtek - Add more entry for enable HP mute led
  ASoC: dapm: Add locking to snd_soc_dapm_xxxx_pin functions
  Input - arizona-haptics: Fix double lock of dapm_mutex
  ASoC: wm8400: Fix the wrong number of enum items
  ASoC: isabelle: Fix the wrong number of items in enum ctls
  ASoC: ad1980: Fix wrong number of items for capture source
  ASoC: wm8994: Fix the wrong number of enum items
  ASoC: wm8900: Fix the wrong number of enum items
  ASoC: wm8770: Fix wrong number of enum items
  ASoC: sta32x: Fix array access overflow
  ASoC: dapm: Correct regulator bypass error messages

10 years agoMerge tag 'edac_fixes_for_3.14' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Torvalds [Fri, 28 Feb 2014 19:49:09 +0000 (11:49 -0800)] 
Merge tag 'edac_fixes_for_3.14' of git://git./linux/kernel/git/bp/bp

Pull EDAC fixes from Borislav Petkov:
 "Two fixes below for PCI devices disappearing when a reference count
  underflow happens after a couple of insmod/rmmod cycles in succession"

* tag 'edac_fixes_for_3.14' of git://git.kernel.org/pub/scm/linux/kernel/git/bp/bp:
  i7300_edac: Fix device reference count
  i7core_edac: Fix PCI device reference count

10 years agoMerge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm
Linus Torvalds [Fri, 28 Feb 2014 19:45:03 +0000 (11:45 -0800)] 
Merge tag 'for-linus' of git://git./virt/kvm/kvm

Pull KVM fixes from Paolo Bonzini:
 "Three x86 fixes and one for ARM/ARM64.

  In particular, nested virtualization on Intel is broken in 3.13 and
  fixed by this pull request"

* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm:
  kvm, vmx: Really fix lazy FPU on nested guest
  kvm: x86: fix emulator buffer overflow (CVE-2014-0049)
  arm/arm64: KVM: detect CPU reset on CPU_PM_EXIT
  KVM: MMU: drop read-only large sptes when creating lower level sptes

10 years agoMerge tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux
Linus Torvalds [Fri, 28 Feb 2014 19:43:42 +0000 (11:43 -0800)] 
Merge tag 'arm64-fixes' of git://git./linux/kernel/git/arm64/linux

Pull ARM64 fixes from Catalin Marinas:
 - !CONFIG_SMP build fix
 - pte bit testing macros conversion fix (int truncates top bits of
   long)
 - stack unwinding PC calculation fix

* tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
  arm64: Fix !CONFIG_SMP kernel build
  arm64: mm: Add double logical invert to pte accessors
  ARM64: unwind: Fix PC calculation

10 years agoMerge branch 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc
Linus Torvalds [Fri, 28 Feb 2014 19:42:33 +0000 (11:42 -0800)] 
Merge branch 'merge' of git://git./linux/kernel/git/benh/powerpc

Pull powerpc fixes from Ben Herrenschmidt:
 "Here are a few more powerpc fixes for 3.14.

  Most of these are also CC'ed to stable and fix bugs in new
  functionality introduced in the last 2 or 3 versions"

* 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc:
  powerpc/powernv: Fix indirect XSCOM unmangling
  powerpc/powernv: Fix opal_xscom_{read,write} prototype
  powerpc/powernv: Refactor PHB diag-data dump
  powerpc/powernv: Dump PHB diag-data immediately
  powerpc: Increase stack redzone for 64-bit userspace to 512 bytes
  powerpc/ftrace: bugfix for test_24bit_addr
  powerpc/crashdump : Fix page frame number check in copy_oldmem_page
  powerpc/le: Ensure that the 'stop-self' RTAS token is handled correctly

10 years agoarm64: Fix !CONFIG_SMP kernel build
Catalin Marinas [Fri, 28 Feb 2014 16:12:25 +0000 (16:12 +0000)] 
arm64: Fix !CONFIG_SMP kernel build

Commit fb4a96029c8a (arm64: kernel: fix per-cpu offset restore on
resume) uses per_cpu_offset() unconditionally during CPU wakeup,
however, this is only defined for the SMP case.

Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Reported-by: Dave P Martin <Dave.Martin@arm.com>
10 years agoarm64: mm: Add double logical invert to pte accessors
Steve Capper [Tue, 25 Feb 2014 11:38:53 +0000 (11:38 +0000)] 
arm64: mm: Add double logical invert to pte accessors

Page table entries on ARM64 are 64 bits, and some pte functions such as
pte_dirty return a bitwise-and of a flag with the pte value. If the
flag to be tested resides in the upper 32 bits of the pte, then we run
into the danger of the result being dropped if downcast.

For example:
gather_stats(page, md, pte_dirty(*pte), 1);
where pte_dirty(*pte) is downcast to an int.

This patch adds a double logical invert to all the pte_ accessors to
ensure predictable downcasting.

Signed-off-by: Steve Capper <steve.capper@linaro.org>
Cc: <stable@vger.kernel.org>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
10 years agodm cache: fix truncation bug when mapping I/O to >2TB fast device
Heinz Mauelshagen [Thu, 27 Feb 2014 21:46:48 +0000 (22:46 +0100)] 
dm cache: fix truncation bug when mapping I/O to >2TB fast device

When remapping a block to the cache's fast device that is larger than
2TB we must not truncate the destination sector to 32bits.  The 32bit
temporary result of from_cblock() was being overflowed in
remap_to_cache() due to the logical left shift.

Use an intermediate 64bit type to store the 32bit from_cblock() result
to fix the overflow.

Signed-off-by: Heinz Mauelshagen <heinzm@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Cc: stable@vger.kernel.org
10 years agoperf tools: Fix strict alias issue for find_first_bit
Jiri Olsa [Wed, 26 Feb 2014 17:14:26 +0000 (18:14 +0100)] 
perf tools: Fix strict alias issue for find_first_bit

When compiling perf tool code with gcc 4.4.7 I'm getting
following error:

    CC       util/session.o
  cc1: warnings being treated as errors
  util/session.c: In function ‘perf_session_deliver_event’:
  tools/perf/util/include/linux/bitops.h:109: error: dereferencing pointer ‘p’ does break strict-aliasing rules
  tools/perf/util/include/linux/bitops.h:101: error: dereferencing pointer ‘p’ does break strict-aliasing rules
  util/session.c:697: note: initialized from here
  tools/perf/util/include/linux/bitops.h:101: note: initialized from here
  make[1]: *** [util/session.o] Error 1
  make: *** [util/session.o] Error 2

The aliased types here are u64 and unsigned long pointers, which is safe
for the find_first_bit processing.

This error shows up for me only for gcc 4.4 on 32bit x86, even for
-Wstrict-aliasing=3, while newer gcc are quiet and scream here for
-Wstrict-aliasing={2,1}. Looks like newer gcc changed the rules for
strict alias warnings.

The gcc documentation offers workaround for valid aliasing by using
__may_alias__ attribute:

  http://gcc.gnu.org/onlinedocs/gcc-4.4.0/gcc/Type-Attributes.html

Using this workaround for the find_first_bit function.

Signed-off-by: Jiri Olsa <jolsa@redhat.com>
Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1393434867-20271-1-git-send-email-jolsa@redhat.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
10 years agopowerpc/powernv: Fix indirect XSCOM unmangling
Benjamin Herrenschmidt [Fri, 28 Feb 2014 05:20:38 +0000 (16:20 +1100)] 
powerpc/powernv: Fix indirect XSCOM unmangling

We need to unmangle the full address, not just the register
number, and we also need to support the real indirect bit
being set for in-kernel uses.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
CC: <stable@vger.kernel.org> [v3.13]
10 years agopowerpc/powernv: Fix opal_xscom_{read,write} prototype
Benjamin Herrenschmidt [Fri, 28 Feb 2014 05:20:29 +0000 (16:20 +1100)] 
powerpc/powernv: Fix opal_xscom_{read,write} prototype

The OPAL firmware functions opal_xscom_read and opal_xscom_write
take a 64-bit argument for the XSCOM (PCB) address in order to
support the indirect mode on P8.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
CC: <stable@vger.kernel.org> [v3.13]
10 years agopowerpc/powernv: Refactor PHB diag-data dump
Gavin Shan [Tue, 25 Feb 2014 07:28:38 +0000 (15:28 +0800)] 
powerpc/powernv: Refactor PHB diag-data dump

As Ben suggested, the patch prints PHB diag-data with multiple
fields in one line and omits the line if the fields of that
line are all zero.

With the patch applied, the PHB3 diag-data dump looks like:

PHB3 PHB#3 Diag-data (Version: 1)

  brdgCtl:     00000002
  RootSts:     0000000f 00400000 b0830008 00100147 00002000
  nFir:        0000000000000000 0030006e00000000 0000000000000000
  PhbSts:      0000001c00000000 0000000000000000
  Lem:         0000000000100000 42498e327f502eae 0000000000000000
  InAErr:      8000000000000000 8000000000000000 0402030000000000 0000000000000000
  PE[  8] A/B: 8480002b00000000 8000000000000000

[ The current diag data is so big that it overflows the printk
  buffer pretty quickly in cases when we get a handful of errors
  at once which can happen. --BenH
]

Signed-off-by: Gavin Shan <shangw@linux.vnet.ibm.com>
CC: <stable@vger.kernel.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
10 years agopowerpc/powernv: Dump PHB diag-data immediately
Gavin Shan [Tue, 25 Feb 2014 07:28:37 +0000 (15:28 +0800)] 
powerpc/powernv: Dump PHB diag-data immediately

The PHB diag-data is important to help locating the root cause for
EEH errors such as frozen PE or fenced PHB. However, the EEH core
enables IO path by clearing part of HW registers before collecting
this data causing it to be corrupted.

This patch fixes this by dumping the PHB diag-data immediately when
frozen/fenced state on PE or PHB is detected for the first time in
eeh_ops::get_state() or next_error() backend.

Signed-off-by: Gavin Shan <shangw@linux.vnet.ibm.com>
CC: <stable@vger.kernel.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
10 years agopowerpc: Increase stack redzone for 64-bit userspace to 512 bytes
Paul Mackerras [Wed, 26 Feb 2014 06:07:38 +0000 (17:07 +1100)] 
powerpc: Increase stack redzone for 64-bit userspace to 512 bytes

The new ELFv2 little-endian ABI increases the stack redzone -- the
area below the stack pointer that can be used for storing data --
from 288 bytes to 512 bytes.  This means that we need to allow more
space on the user stack when delivering a signal to a 64-bit process.

To make the code a bit clearer, we define new USER_REDZONE_SIZE and
KERNEL_REDZONE_SIZE symbols in ptrace.h.  For now, we leave the
kernel redzone size at 288 bytes, since increasing it to 512 bytes
would increase the size of interrupt stack frames correspondingly.

Gcc currently only makes use of 288 bytes of redzone even when
compiling for the new little-endian ABI, and the kernel cannot
currently be compiled with the new ABI anyway.

In the future, hopefully gcc will provide an option to control the
amount of redzone used, and then we could reduce it even more.

This also changes the code in arch_compat_alloc_user_space() to
preserve the expanded redzone.  It is not clear why this function would
ever be used on a 64-bit process, though.

Signed-off-by: Paul Mackerras <paulus@samba.org>
CC: <stable@vger.kernel.org> [v3.13]
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
10 years agopowerpc/ftrace: bugfix for test_24bit_addr
Liu Ping Fan [Wed, 26 Feb 2014 02:23:01 +0000 (10:23 +0800)] 
powerpc/ftrace: bugfix for test_24bit_addr

The branch target should be the func addr, not the addr of func_descr_t.
So using ppc_function_entry() to generate the right target addr.

Signed-off-by: Liu Ping Fan <pingfank@linux.vnet.ibm.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
10 years agopowerpc/crashdump : Fix page frame number check in copy_oldmem_page
Laurent Dufour [Mon, 24 Feb 2014 16:30:55 +0000 (17:30 +0100)] 
powerpc/crashdump : Fix page frame number check in copy_oldmem_page

In copy_oldmem_page, the current check using max_pfn and min_low_pfn to
decide if the page is backed or not, is not valid when the memory layout is
not continuous.

This happens when running as a QEMU/KVM guest, where RTAS is mapped higher
in the memory. In that case max_pfn points to the end of RTAS, and a hole
between the end of the kdump kernel and RTAS is not backed by PTEs. As a
consequence, the kdump kernel is crashing in copy_oldmem_page when accessing
in a direct way the pages in that hole.

This fix relies on the memblock's service memblock_is_region_memory to
check if the read page is part or not of the directly accessible memory.

Signed-off-by: Laurent Dufour <ldufour@linux.vnet.ibm.com>
Tested-by: Mahesh Salgaonkar <mahesh@linux.vnet.ibm.com>
CC: <stable@vger.kernel.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
10 years agopowerpc/le: Ensure that the 'stop-self' RTAS token is handled correctly
Tony Breeds [Thu, 20 Feb 2014 10:13:52 +0000 (21:13 +1100)] 
powerpc/le: Ensure that the 'stop-self' RTAS token is handled correctly

Currently we're storing a host endian RTAS token in
rtas_stop_self_args.token.  We then pass that directly to rtas.  This is
fine on big endian however on little endian the token is not what we
expect.

This will typically result in hitting:
panic("Alas, I survived.\n");

To fix this we always use the stop-self token in host order and always
convert it to be32 before passing this to rtas.

Signed-off-by: Tony Breeds <tony@bakeyournoodle.com>
Cc: stable@vger.kernel.org
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
10 years agoMerge branches 'pm-cpufreq', 'pm-hibernate' and 'acpi-processor'
Rafael J. Wysocki [Thu, 27 Feb 2014 23:14:11 +0000 (00:14 +0100)] 
Merge branches 'pm-cpufreq', 'pm-hibernate' and 'acpi-processor'

* pm-cpufreq:
  intel_pstate: Change busy calculation to use fixed point math.

* pm-hibernate:
  PM / hibernate: Fix restore hang in freeze_processes()

* acpi-processor:
  ACPI / processor: Rework processor throttling with work_on_cpu()

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