Commit 274a96e4 authored Jun 21, 2016 by Shalini Krishnamoorthi

msm: mdss: Add null check for dma buffer memory



The dma buffer is checked only for error and not null. Changes
are added to check if the buffer is null to prevent accessing
invalid MUTEX lock or invalid dma buffer memory.

CRs-Fixed: 1032180
Change-Id: Ia1ed1238b084d04eb787d078f7bb47a4e2a62a8a
Signed-off-by: Shalini Krishnamoorthi <shakri@codeaurora.org>

parent 97baa9ad

drivers/video/msm/mdss/mdss_mdp_util.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -1010,7 +1010,7 @@ static int mdss_mdp_get_img(struct msmfb_data *img,
		} else if (iclient) {
		if (mdss_mdp_is_map_needed(mdata, data)) {
		data->srcp_dma_buf = dma_buf_get(img->memory_id);
		if (IS_ERR(data->srcp_dma_buf)) {
		if (IS_ERR_OR_NULL(data->srcp_dma_buf)) {
		pr_err("error on ion_import_fd\n");
		ret = PTR_ERR(data->srcp_dma_buf);
		data->srcp_dma_buf = NULL;