[PATCH] drm/msm: dsi: dev_pm_opp_put_clkname() only when an opp_table exists

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



Its possible for msm_dsi_host_init() to fail early, before
dev_pm_opp_set_clkname() is called. In such cases, unconditionally
calling dev_pm_opp_put_clkname() in msm_dsi_host_destroy() results
in a crash. Put an additional check so that dev_pm_opp_put_clkname()
is called only when an opp_table exists.

Fixes: f99131fa7a23 ("drm/msm: dsi: Use OPP API to set clk/perf state")
Reported-by: Sai Prakash Ranjan <saiprakash.ranjan@xxxxxxxxxxxxxx>
Signed-off-by: Rajendra Nayak <rnayak@xxxxxxxxxxxxxx>
---
 drivers/gpu/drm/msm/dsi/dsi_host.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/msm/dsi/dsi_host.c b/drivers/gpu/drm/msm/dsi/dsi_host.c
index 0a14c4a..4f580f7 100644
--- a/drivers/gpu/drm/msm/dsi/dsi_host.c
+++ b/drivers/gpu/drm/msm/dsi/dsi_host.c
@@ -1936,7 +1936,8 @@ void msm_dsi_host_destroy(struct mipi_dsi_host *host)
 
 	if (msm_host->has_opp_table)
 		dev_pm_opp_of_remove_table(&msm_host->pdev->dev);
-	dev_pm_opp_put_clkname(msm_host->opp_table);
+	if (msm_host->opp_table)
+		dev_pm_opp_put_clkname(msm_host->opp_table);
 	pm_runtime_disable(&msm_host->pdev->dev);
 }
 
-- 
QUALCOMM INDIA, on behalf of Qualcomm Innovation Center, Inc. is a member
of Code Aurora Forum, hosted by The Linux Foundation

_______________________________________________
dri-devel mailing list
dri-devel@xxxxxxxxxxxxxxxxxxxxx
https://lists.freedesktop.org/mailman/listinfo/dri-devel



[Index of Archives]     [Linux DRI Users]     [Linux Intel Graphics]     [Linux USB Devel]     [Video for Linux]     [Linux Audio Users]     [Yosemite News]     [Linux Kernel]     [Linux SCSI]     [XFree86]     [Linux USB Devel]     [Video for Linux]     [Linux Audio Users]     [Linux Kernel]     [Linux SCSI]     [XFree86]
  Powered by Linux