UbiquitousOS
/
OpenCloudOS-Kernel
mirror of https://gitee.com/OpenCloudOS/OpenCloudOS-Kernel.git
11
0
Fork 0
Code Issues Projects Releases Wiki Activity

drm/msm/dsi: Fix potential NULL pointer dereference in msm_dsi_modeset_init 

_dev_ is being dereferenced before it is null checked, hence there
is a potential null pointer dereference.

Fix this by moving the pointer dereference after _dev_ has been
null checked.

Fixes: d4e7f38d70ef ("drm/msm/dsi: check msm_dsi and dsi pointers before use")
Signed-off-by: Gustavo A. R. Silva <garsilva@embeddedor.com>
Signed-off-by: Rob Clark <robdclark@gmail.com>
This commit is contained in:
Gustavo A. R. Silva 2018-02-02 06:42:33 -06:00 committed by Rob Clark
parent 5abc7dd7b5
commit 52749d601a
1 changed files with 2 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
drivers/gpu/drm/msm/dsi/dsi.c
View File

@ -192,13 +192,14 @@ void __exit msm_dsi_unregister(void)
int msm_dsi_modeset_init(struct msm_dsi *msm_dsi, struct drm_device *dev,
struct drm_encoder *encoder)
{
struct msm_drm_private *priv = dev->dev_private;
struct msm_drm_private *priv;
struct drm_bridge *ext_bridge;
int ret;
if (WARN_ON(!encoder) || WARN_ON(!msm_dsi) || WARN_ON(!dev))
return -EINVAL;
priv = dev->dev_private;
msm_dsi->dev = dev;
ret = msm_dsi_host_modeset_init(msm_dsi->host, dev);