]> git.proxmox.com Git - mirror_ubuntu-eoan-kernel.git/commit
usb: musb: ux500: Fix NULL pointer dereference at system PM
authorUlf Hansson <ulf.hansson@linaro.org>
Mon, 25 Jan 2016 12:01:29 +0000 (13:01 +0100)
committerFelipe Balbi <balbi@kernel.org>
Wed, 3 Feb 2016 18:03:40 +0000 (20:03 +0200)
commit79c5623f1cb85f33403eb9f1e45124e9f56181f8
treed4e1dbf0104ca7df3e5cccef69b85e97a8e41b5c
parent63b121e3a3167df9fdb99633fd1c840c841b07b9
usb: musb: ux500: Fix NULL pointer dereference at system PM

The commit 7d32cdef5356 ("usb: musb: fail with error when no DMA
controller set"), caused the core platform driver to correctly return an
error code when fail probing.

Unfurtante it also caused bug for a NULL pointer dereference, during
system suspend for the ux500 driver. The reason is a lacking validation
of the corresponding ->driver_data pointer, which won't be set when the
musb core driver fails to probe (or haven't yet been probed).

Fixes: 7d32cdef5356 ("usb: musb: fail with error when no DMA...")
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Felipe Balbi <balbi@kernel.org>
drivers/usb/musb/ux500.c