From: Colin Ian King colin.king@canonical.com
The initialization of pointer dev dereferences pointer edp before edp is null checked, so there is a potential null pointer deference issue. Fix this by only dereferencing edp after edp has been null checked.
Addresses-Coverity: ("Dereference before null check") Fixes: ab5b0107ccf3 ("drm/msm: Initial add eDP support in msm drm driver (v5)") Signed-off-by: Colin Ian King colin.king@canonical.com --- drivers/gpu/drm/msm/edp/edp_ctrl.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/msm/edp/edp_ctrl.c b/drivers/gpu/drm/msm/edp/edp_ctrl.c index 4fb397ee7c84..fe1366b4c49f 100644 --- a/drivers/gpu/drm/msm/edp/edp_ctrl.c +++ b/drivers/gpu/drm/msm/edp/edp_ctrl.c @@ -1116,7 +1116,7 @@ void msm_edp_ctrl_power(struct edp_ctrl *ctrl, bool on) int msm_edp_ctrl_init(struct msm_edp *edp) { struct edp_ctrl *ctrl = NULL; - struct device *dev = &edp->pdev->dev; + struct device *dev; int ret;
if (!edp) { @@ -1124,6 +1124,7 @@ int msm_edp_ctrl_init(struct msm_edp *edp) return -EINVAL; }
+ dev = &edp->pdev->dev; ctrl = devm_kzalloc(dev, sizeof(*ctrl), GFP_KERNEL); if (!ctrl) return -ENOMEM;