From: Sasha Levin <sashal@kernel.org>
To: linux-kernel@vger.kernel.org, stable@vger.kernel.org
Cc: Sasha Levin <sashal@kernel.org>,
dri-devel@lists.freedesktop.org,
linux-mediatek@lists.infradead.org,
Bibby Hsieh <bibby.hsieh@mediatek.com>,
CK Hu <ck.hu@mediatek.com>,
linux-arm-kernel@lists.infradead.org
Subject: [PATCH AUTOSEL 4.19 113/252] drm/mediatek: handle events when enabling/disabling crtc
Date: Fri, 14 Feb 2020 11:09:28 -0500 [thread overview]
Message-ID: <20200214161147.15842-113-sashal@kernel.org> (raw)
In-Reply-To: <20200214161147.15842-1-sashal@kernel.org>
From: Bibby Hsieh <bibby.hsieh@mediatek.com>
[ Upstream commit 411f5c1eacfebb1f6e40b653d29447cdfe7282aa ]
The driver currently handles vblank events only when updating planes on
an already enabled CRTC. The atomic update API however allows requesting
an event when enabling or disabling a CRTC. This currently leads to
event objects being leaked in the kernel and to events not being sent
out. Fix it.
Signed-off-by: Bibby Hsieh <bibby.hsieh@mediatek.com>
Signed-off-by: CK Hu <ck.hu@mediatek.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/gpu/drm/mediatek/mtk_drm_crtc.c | 8 ++++++++
1 file changed, 8 insertions(+)
diff --git a/drivers/gpu/drm/mediatek/mtk_drm_crtc.c b/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
index 92ecb9bf982cf..b86ee7d25af36 100644
--- a/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
+++ b/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
@@ -308,6 +308,7 @@ static int mtk_crtc_ddp_hw_init(struct mtk_drm_crtc *mtk_crtc)
static void mtk_crtc_ddp_hw_fini(struct mtk_drm_crtc *mtk_crtc)
{
struct drm_device *drm = mtk_crtc->base.dev;
+ struct drm_crtc *crtc = &mtk_crtc->base;
int i;
DRM_DEBUG_DRIVER("%s\n", __func__);
@@ -329,6 +330,13 @@ static void mtk_crtc_ddp_hw_fini(struct mtk_drm_crtc *mtk_crtc)
mtk_disp_mutex_unprepare(mtk_crtc->mutex);
pm_runtime_put(drm->dev);
+
+ if (crtc->state->event && !crtc->state->active) {
+ spin_lock_irq(&crtc->dev->event_lock);
+ drm_crtc_send_vblank_event(crtc, crtc->state->event);
+ crtc->state->event = NULL;
+ spin_unlock_irq(&crtc->dev->event_lock);
+ }
}
static void mtk_crtc_ddp_config(struct drm_crtc *crtc)
--
2.20.1
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prev parent reply other threads:[~2020-02-14 17:01 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20200214161147.15842-1-sashal@kernel.org>
2020-02-14 16:08 ` [PATCH AUTOSEL 4.19 037/252] scsi: ufs: Fix ufshcd_probe_hba() reture value in case ufshcd_scsi_add_wlus() fails Sasha Levin
2020-02-14 16:09 ` Sasha Levin [this message]
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