USB: xhci: Fix bug memory free after failed initialization.
authorSarah Sharp <sarah.a.sharp@linux.intel.com>
Wed, 4 Nov 2009 06:02:22 +0000 (22:02 -0800)
committerGreg Kroah-Hartman <gregkh@suse.de>
Wed, 18 Nov 2009 00:46:34 +0000 (16:46 -0800)
commitd94c05e33d9212ee67b8d4998f984cc71df8168b
tree9973d10bb0e1730af6145655fec4cde3a79a54c2
parent051522bb47797f7168a617a0752d7ddc1a2f6f24
USB: xhci: Fix bug memory free after failed initialization.

If the xHCI driver fails during the memory initialization, xhci->ir_set
may not be a valid pointer.  Check that it points to valid DMA'able memory
before writing to that address during the memory freeing process.

Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>
Cc: stable <stable@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
drivers/usb/host/xhci-mem.c