next: drm/atomic: Use copy_from_user to copy 64 bit data from user space
authorGuenter Roeck <linux@roeck-us.net>
Tue, 13 Jan 2015 05:12:17 +0000 (21:12 -0800)
committerDaniel Vetter <daniel.vetter@ffwll.ch>
Wed, 21 Jan 2015 13:57:04 +0000 (14:57 +0100)
commit42c5814c9c9828a7fcbe25f69c5c8cbbf29ed957
tree62d0dc1c32cad08cc07eebcf34287e6837eeece8
parentcdd1cf799bd24ac0a4184549601ae302267301c5
next: drm/atomic: Use copy_from_user to copy 64 bit data from user space

Copying 64 bit data from user space using get_user is not supported
on all architectures, and may result in the following build error.

ERROR: "__get_user_bad" [drivers/gpu/drm/drm.ko] undefined!

Avoid the problem by using copy_from_user.

Fixes: d34f20d6e2f2 ("drm: Atomic modeset ioctl")
Cc: Rob Clark <robdclark@gmail.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
drivers/gpu/drm/drm_atomic.c