Kernel/linux-next
1
0
Fork 0
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git synced 2025-01-10 15:58:47 +00:00
Code Issues Actions Packages Projects Releases Wiki Activity

drm/komeda: Potential error pointer dereference

Browse Source 
We need to check whether drm_atomic_get_crtc_state() returns an error
pointer before dereferencing "crtc_st".

Fixes: 9e5603094176 ("drm/komeda: Add komeda_plane/plane_helper_funcs")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Reviewed-by: "james qian wang (Arm Technology China)" <james.qian.wang@arm.com>
Signed-off-by: Liviu Dudau <liviu.dudau@arm.com>
This commit is contained in:
Dan Carpenter 2019-05-03 15:25:25 +03:00 committed by Liviu Dudau
parent 7cb8bec205
commit 6d10dc617b
1 changed files with 1 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
drivers/gpu/drm/arm/display/komeda/komeda_plane.c
View File

@ -63,7 +63,7 @@ komeda_plane_atomic_check(struct drm_plane *plane,
return 0;
crtc_st = drm_atomic_get_crtc_state(state->state, state->crtc);
if (!crtc_st->enable) {
if (IS_ERR(crtc_st) || !crtc_st->enable) {
DRM_DEBUG_ATOMIC("Cannot update plane on a disabled CRTC.\n");
return -EINVAL;
}