From: Danilo Krummrich Date: Wed, 24 Aug 2022 16:13:24 +0000 (+0200) Subject: drm/vc4: hdmi: unlock mutex when device is unplugged X-Git-Tag: v6.1-rc5~176^2~21^2~78 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=227295df4e37de66b61bbb3d1f10436f0acd33cc;p=platform%2Fkernel%2Flinux-starfive.git drm/vc4: hdmi: unlock mutex when device is unplugged In vc4_hdmi_encoder_{pre,post}_crtc_enable() commit cd00ed5187bf ("drm/vc4: hdmi: Protect device resources after removal") missed to unlock the mutex before returning due to drm_dev_enter() indicating the device being unplugged. Fixes: cd00ed5187bf ("drm/vc4: hdmi: Protect device resources after removal") Signed-off-by: Danilo Krummrich Signed-off-by: Maxime Ripard Link: https://lore.kernel.org/r/20220824161327.330627-2-dakr@redhat.com --- diff --git a/drivers/gpu/drm/vc4/vc4_hdmi.c b/drivers/gpu/drm/vc4/vc4_hdmi.c index 84e5a91..4d3ff51 100644 --- a/drivers/gpu/drm/vc4/vc4_hdmi.c +++ b/drivers/gpu/drm/vc4/vc4_hdmi.c @@ -1425,7 +1425,7 @@ static void vc4_hdmi_encoder_pre_crtc_enable(struct drm_encoder *encoder, mutex_lock(&vc4_hdmi->mutex); if (!drm_dev_enter(drm, &idx)) - return; + goto out; if (vc4_hdmi->variant->csc_setup) vc4_hdmi->variant->csc_setup(vc4_hdmi, conn_state, mode); @@ -1436,6 +1436,7 @@ static void vc4_hdmi_encoder_pre_crtc_enable(struct drm_encoder *encoder, drm_dev_exit(idx); +out: mutex_unlock(&vc4_hdmi->mutex); } @@ -1455,7 +1456,7 @@ static void vc4_hdmi_encoder_post_crtc_enable(struct drm_encoder *encoder, mutex_lock(&vc4_hdmi->mutex); if (!drm_dev_enter(drm, &idx)) - return; + goto out; spin_lock_irqsave(&vc4_hdmi->hw_lock, flags); @@ -1516,6 +1517,8 @@ static void vc4_hdmi_encoder_post_crtc_enable(struct drm_encoder *encoder, vc4_hdmi_enable_scrambling(encoder); drm_dev_exit(idx); + +out: mutex_unlock(&vc4_hdmi->mutex); }