[PATCH v5 6/8] drm/msm/dsi: Add check for slice_width in dsi_timing_setup
Jessica Zhang
quic_jesszhan at quicinc.com
Wed Apr 12 19:09:46 UTC 2023
Add a check for valid dsc->slice_width value in dsi_timing_setup.
Signed-off-by: Jessica Zhang <quic_jesszhan at quicinc.com>
---
drivers/gpu/drm/msm/dsi/dsi_host.c | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/drivers/gpu/drm/msm/dsi/dsi_host.c b/drivers/gpu/drm/msm/dsi/dsi_host.c
index 508577c596ff..6a6218a9655f 100644
--- a/drivers/gpu/drm/msm/dsi/dsi_host.c
+++ b/drivers/gpu/drm/msm/dsi/dsi_host.c
@@ -937,6 +937,12 @@ static void dsi_timing_setup(struct msm_dsi_host *msm_host, bool is_bonded_dsi)
return;
}
+ if (!dsc->slice_width || (mode->hdisplay < dsc->slice_width)) {
+ pr_err("DSI: invalid slice width %d (pic_width: %d)\n",
+ dsc->slice_width, mode->hdisplay);
+ return;
+ }
+
dsc->pic_width = mode->hdisplay;
dsc->pic_height = mode->vdisplay;
DBG("Mode %dx%d\n", dsc->pic_width, dsc->pic_height);
--
2.40.0
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