| commit | a6d940dd759bf240d28624198660ed34582a327b | |
| author | Sarah Sharp <sarah.a.sharp@linux.intel.com> | |
| Tue, 28 Dec 2010 21:08:42 +0000 (28 13:08 -0800) | ||
| committer | Sarah Sharp <sarah.a.sharp@linux.intel.com> | |
| Fri, 14 Jan 2011 23:51:51 +0000 (14 15:51 -0800) | ||
| tree | 4a6ce6ef72bb872a9f0a94933b3d6f749b58538e | treesnapshot (tar.gz zip) |
| parent | 653a39d1f61bdc9f277766736d21d2e9be0391cb | commitdiff |
xhci: Use GFP_NOIO during device reset.
When xhci_discover_or_reset_device() is called after a host controller
power loss, the virtual device may need to be reallocated. Make sure
xhci_alloc_dev() uses GFP_NOIO. This avoid causing a deadlock by allowing
the kernel to flush pending I/O while reallocating memory for a virtual
device for a USB mass storage device that's holding the backing store for
dirty memory buffers.
This patch should be queued for the 2.6.37 stable tree.
Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>
Cc: stable@kernel.org
When xhci_discover_or_reset_device() is called after a host controller
power loss, the virtual device may need to be reallocated. Make sure
xhci_alloc_dev() uses GFP_NOIO. This avoid causing a deadlock by allowing
the kernel to flush pending I/O while reallocating memory for a virtual
device for a USB mass storage device that's holding the backing store for
dirty memory buffers.
This patch should be queued for the 2.6.37 stable tree.
Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>
Cc: stable@kernel.org
| drivers/usb/host/xhci.c | diffblobblamehistory |