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authorRajesh Yadav <ryadav@codeaurora.org>2018-06-25 19:12:03 +0530
committerSean Paul <seanpaul@chromium.org>2018-07-26 10:40:14 -0400
commit7a296796fd0b28dc229d65dd90a6b392852d9631 (patch)
tree011ef4a5766f7fb6987eea4b8f30caa19684c39a /drivers/gpu/drm/msm/dsi/pll
parent8b03ad30e314691f7bfccc0f9fae0dffd498b667 (diff)
drm/msm/dsi: initialize postdiv_lock before use for 10nm pll
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. Changes in v3: - Added Archit's R-b Reviewed-by: Archit Taneja <architt@codeaurora.org> Signed-off-by: Rajesh Yadav <ryadav@codeaurora.org> Signed-off-by: Sean Paul <seanpaul@chromium.org> Signed-off-by: Rob Clark <robdclark@gmail.com>
Diffstat (limited to 'drivers/gpu/drm/msm/dsi/pll')
-rw-r--r--drivers/gpu/drm/msm/dsi/pll/dsi_pll_10nm.c2
1 files changed, 2 insertions, 0 deletions
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;