From: Abhinav Kumar <abhinavk@codeaurora.org>
Date: Mon, 16 Apr 2018 19:05:30 -0700
Subject: drm/msm/dsi: check return value for video done waits
Git-commit: a6bb80f8efe04be2b2e2dcd1e5cd8fbfdaa35ab0
Patch-mainline: v4.17-rc3
References: FATE#326289 FATE#326079 FATE#326049 FATE#322398 FATE#326166
Check for the return value of wait for video
done waits and print appropriate error message.
Signed-off-by: Abhinav Kumar <abhinavk@codeaurora.org>
Signed-off-by: Sean Paul <seanpaul@chromium.org>
Signed-off-by: Rob Clark <robdclark@gmail.com>
Acked-by: Petr Tesarik <ptesarik@suse.com>
---
drivers/gpu/drm/msm/dsi/dsi_host.c | 8 +++++++-
1 file changed, 7 insertions(+), 1 deletion(-)
--- a/drivers/gpu/drm/msm/dsi/dsi_host.c
+++ b/drivers/gpu/drm/msm/dsi/dsi_host.c
@@ -986,13 +986,19 @@ static void dsi_set_tx_power_mode(int mo
static void dsi_wait4video_done(struct msm_dsi_host *msm_host)
{
+ u32 ret = 0;
+ struct device *dev = &msm_host->pdev->dev;
+
dsi_intr_ctrl(msm_host, DSI_IRQ_MASK_VIDEO_DONE, 1);
reinit_completion(&msm_host->video_comp);
- wait_for_completion_timeout(&msm_host->video_comp,
+ ret = wait_for_completion_timeout(&msm_host->video_comp,
msecs_to_jiffies(70));
+ if (ret <= 0)
+ dev_err(dev, "wait for video done timed out\n");
+
dsi_intr_ctrl(msm_host, DSI_IRQ_MASK_VIDEO_DONE, 0);
}