msm: mdss: Fix possible integer overflow



Avoid possible integer overflow while validating mdp3
lut config parameters.

Change-Id: Ie3f59748e613fbbf755a98dcc688491a8c4e2cca
CRs-Fixed: 1104664
Signed-off-by: Sravan Kumar D.V.N <sravank1@codeaurora.org>

parent 2ba32820

drivers/video/msm/mdss/mdp3_ctrl.c

+4 −2

Original line number	Diff line number	Diff line
		@@ -2257,8 +2257,10 @@ static int mdp3_ctrl_lut_config(struct msm_fb_data_type *mfd,

		dma = mdp3_session->dma;

		if (cfg->cmap.start + cfg->cmap.len > MDP_LUT_SIZE) {
		pr_err("Invalid arguments\n");
		if ((cfg->cmap.start > MDP_LUT_SIZE) \|\|
		(cfg->cmap.len > MDP_LUT_SIZE) \|\|
		(cfg->cmap.start + cfg->cmap.len > MDP_LUT_SIZE)) {
		pr_err("Invalid arguments.\n");
		return -EINVAL;
		}