tree 6dc66d33c8ffaca1faf84bca4707db429548422f
parent f3ef9ead31ae995251b420ac98398bd7545bf4e1
author Michael Hanselmann <linux-kernel@hansmi.ch> 1159226707 -0700
committer Linus Torvalds <torvalds@g5.osdl.org> 1159231116 -0700

[PATCH] backlight: fix oops in __mutex_lock_slowpath during head /sys/class/graphics/fb0/*

Seems like not all drivers use the framebuffer_alloc() function and won't
have an initialized mutex.  But those don't have a backlight, anyway.

Signed-off-by: Michael Hanselmann <linux-kernel@hansmi.ch>
Cc: Olaf Hering <olaf@aepfle.de>
Cc: "Antonino A. Daplas" <adaplas@pol.net>
Cc: Daniel R Thompson <daniel.thompson@st.com>
Cc: Jon Smirl <jonsmirl@gmail.com>
Cc: <stable@kernel.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>