From: Sarah Sharp <sarah.a.sharp@linux.intel.com>
Date: Tue, 28 Dec 2010 21:08:42 +0000 (-0800)
Subject: xhci: Use GFP_NOIO during device reset.
X-Git-Tag: v2.6.37.1~1
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=61e1444816df473bb5648541ab6e5d8897972053;p=pandora-kernel.git

xhci: Use GFP_NOIO during device reset.

commit a6d940dd759bf240d28624198660ed34582a327b upstream.

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>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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