From: Rajesh Yadav Date: Mon, 25 Jun 2018 13:42:03 +0000 (+0530) Subject: drm/msm/dsi: initialize postdiv_lock before use for 10nm pll X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=7a296796fd0b28dc229d65dd90a6b392852d9631;p=openwrt%2Fstaging%2Fblogic.git 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 Signed-off-by: Rajesh Yadav Signed-off-by: Sean Paul Signed-off-by: Rob Clark --- 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;