From b01c2399226c294fe9b22d26ce0ebf1707acb8d9 Mon Sep 17 00:00:00 2001 From: Sean Paul Date: Fri, 16 Nov 2018 13:42:23 -0500 Subject: [PATCH] drm/msm: dpu: Don't drop locks in crtc_vblank_enable Now that runtime resume is handled in encoder, we don't need to worry about crtc_lock recursion when calling pm_runtime_(get|put). So drop the lock drops in _dpu_crtc_vblank_enable_no_lock(). Changes in v2: - None Reviewed-by: Jeykumar Sankaran Signed-off-by: Sean Paul Signed-off-by: Rob Clark --- drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c | 6 ------ 1 file changed, 6 deletions(-) diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c index 44bd3b8..6da2492 100644 --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c @@ -781,10 +781,7 @@ static void _dpu_crtc_vblank_enable_no_lock( struct drm_encoder *enc; if (enable) { - /* drop lock since power crtc cb may try to re-acquire lock */ - mutex_unlock(&dpu_crtc->crtc_lock); pm_runtime_get_sync(dev->dev); - mutex_lock(&dpu_crtc->crtc_lock); list_for_each_entry(enc, &dev->mode_config.encoder_list, head) { if (enc->crtc != crtc) @@ -809,10 +806,7 @@ static void _dpu_crtc_vblank_enable_no_lock( dpu_encoder_register_vblank_callback(enc, NULL, NULL); } - /* drop lock since power crtc cb may try to re-acquire lock */ - mutex_unlock(&dpu_crtc->crtc_lock); pm_runtime_put_sync(dev->dev); - mutex_lock(&dpu_crtc->crtc_lock); } } -- 2.7.4