On Monday 09 July 2018 11:01 PM, Sean Paul wrote:
From: Rajesh Yadav <[email protected]>
postdiv_lock spinlock was used before initialization
for 10nm pll. It causes following spin_bug:
"BUG: spinlock bad magic on CPU#0".
Initialize spinlock before its usage.
Reviewed-by: Archit Taneja <[email protected]>
Signed-off-by: Rajesh Yadav <[email protected]>
Signed-off-by: Sean Paul <[email protected]>
---
drivers/gpu/drm/msm/dsi/pll/dsi_pll_10nm.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/drivers/gpu/drm/msm/dsi/pll/dsi_pll_10nm.c
b/drivers/gpu/drm/msm/dsi/pll/dsi_pll_10nm.c
index c4c37a7df637..4c03f0b7343e 100644
--- a/drivers/gpu/drm/msm/dsi/pll/dsi_pll_10nm.c
+++ b/drivers/gpu/drm/msm/dsi/pll/dsi_pll_10nm.c
@@ -798,6 +798,8 @@ struct msm_dsi_pll *msm_dsi_pll_10nm_init(struct
platform_device *pdev, int id)
return ERR_PTR(-ENOMEM);
}
+ spin_lock_init(&pll_10nm->postdiv_lock);
+
pll = &pll_10nm->base;
pll->min_rate = 1000000000UL;
pll->max_rate = 3500000000UL;
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