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usb: gadget: inode.c: fix unbalanced spin_lock in ep0_write
author
David Eccher
<d.eccher@gmail.com>
Fri, 11 Dec 2015 21:13:55 +0000
(22:13 +0100)
committer
Felipe Balbi
<balbi@ti.com>
Wed, 16 Dec 2015 21:19:11 +0000
(15:19 -0600)
Fix bad unlock balance: ep0_write enter with the locks locked from
inode.c:1769, hence it must exit with spinlock held to avoid double
unlock in dev_config.
Signed-off-by: David Eccher <d.eccher@gmail.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
drivers/usb/gadget/legacy/inode.c
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diff --git
a/drivers/usb/gadget/legacy/inode.c
b/drivers/usb/gadget/legacy/inode.c
index f454c7af489ce050dba446a1a5a6b292ad179644..365afd7e14f8cade738683a06616b4116fa84fc9 100644
(file)
--- a/
drivers/usb/gadget/legacy/inode.c
+++ b/
drivers/usb/gadget/legacy/inode.c
@@
-1137,10
+1137,9
@@
ep0_write (struct file *fd, const char __user *buf, size_t len, loff_t *ptr)
dev->gadget->ep0, dev->req,
GFP_KERNEL);
}
+ spin_lock_irq(&dev->lock);
if (retval < 0) {
- spin_lock_irq (&dev->lock);
clean_req (dev->gadget->ep0, dev->req);
- spin_unlock_irq (&dev->lock);
} else
retval = len;
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