Commit e9b95d32 authored Oct 03, 2013 by Casey Piper

msm: mdss: Validate mixer/ctl are not null



mdss_mdp_wb_mixer_destroy could theoretically be
called with null mixer or ctl, which would cause
a null pointer dereference. Adding a check to
prevent this from happening.

Change-Id: I376c449daf05c8ca4ebb789d402575598ee59d86
CRs-Fixed: 551787
Signed-off-by: Casey Piper <cpiper@codeaurora.org>

parent c99f9b85

drivers/video/msm/mdss/mdss_mdp_ctl.c

+5 −0

Original line number	Diff line number	Diff line
		@@ -589,6 +589,11 @@ int mdss_mdp_wb_mixer_destroy(struct mdss_mdp_mixer *mixer)
		{
		struct mdss_mdp_ctl *ctl;

		if (!mixer \|\| !mixer->ctl) {
		pr_err("invalid ctl handle\n");
		return -ENODEV;
		}

		ctl = mixer->ctl;
		mixer->rotator_mode = 0;