On 2020-07-20 17:31, Rajendra Nayak wrote:
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);
}
Tested-by: Sai Prakash Ranjan <saiprakash.ranjan@xxxxxxxxxxxxxx>
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