| Message ID | 20180202124233.GA5056@embeddedor.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
diff --git a/drivers/gpu/drm/msm/dsi/dsi.c b/drivers/gpu/drm/msm/dsi/dsi.c index ee7e090..b744bcc 100644 --- a/drivers/gpu/drm/msm/dsi/dsi.c +++ b/drivers/gpu/drm/msm/dsi/dsi.c @@ -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);
_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> --- drivers/gpu/drm/msm/dsi/dsi.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)