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authorBing Zhao <bzhao@marvell.com>2013-09-24 19:31:25 -0700
committerJohn W. Linville <linville@tuxdriver.com>2013-09-26 14:02:33 -0400
commit346ece0b7ba2730b4d633b9e371fe55488803102 (patch)
tree4acd0edca9eebd12abcb6c4a7a5726acfc386c15 /drivers/scsi/sd_dif.c
parentbd1c6142edce787b8ac1be15635f845aa9905333 (diff)
mwifiex: fix NULL pointer dereference in usb suspend handler
Bug 60815 - Interface hangs in mwifiex_usb https://bugzilla.kernel.org/show_bug.cgi?id=60815 [ 2.883807] BUG: unable to handle kernel NULL pointer dereference at 0000000000000048 [ 2.883813] IP: [<ffffffff815a65e0>] pfifo_fast_enqueue+0x90/0x90 [ 2.883834] CPU: 1 PID: 3220 Comm: kworker/u8:90 Not tainted 3.11.1-monotone-l0 #6 [ 2.883834] Hardware name: Microsoft Corporation Surface with Windows 8 Pro/Surface with Windows 8 Pro, BIOS 1.03.0450 03/29/2013 On Surface Pro, suspend to ram gives a NULL pointer dereference in pfifo_fast_enqueue(). The stack trace reveals that the offending call is clearing carrier in mwifiex_usb suspend handler. Since commit 1499d9f "mwifiex: don't drop carrier flag over suspend" has removed the carrier flag handling over suspend/resume in SDIO and PCIe drivers, I'm removing it in USB driver too. This also fixes the bug for Surface Pro. Cc: <stable@vger.kernel.org> # 3.5+ Tested-by: Dmitry Khromov <icechrome@gmail.com> Signed-off-by: Bing Zhao <bzhao@marvell.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'drivers/scsi/sd_dif.c')
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