5.15-stable review patch. If anyone has any objections, please let me know.
------------------
From: Fei Shao <fshao@xxxxxxxxxxxx>
[ Upstream commit be03b30b7aa99aca876fbc7c1c1b73b2d0339321 ]
Use the state-aware spin_lock_irqsave() and spin_unlock_irqrestore()
to avoid unconditionally re-enabling the local interrupts.
Fixes: 411f5c1eacfe ("drm/mediatek: handle events when enabling/disabling crtc")
Signed-off-by: Fei Shao <fshao@xxxxxxxxxxxx>
Link: https://patchwork.kernel.org/project/dri-devel/patch/20240828101511.3269822-1-fshao@xxxxxxxxxxxx/
Signed-off-by: Chun-Kuang Hu <chunkuang.hu@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
drivers/gpu/drm/mediatek/mtk_drm_crtc.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/drivers/gpu/drm/mediatek/mtk_drm_crtc.c b/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
index 1a038fa004668..27f3e91425580 100644
--- a/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
+++ b/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
@@ -386,6 +386,7 @@ 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;
+ unsigned long flags;
int i;
for (i = 0; i < mtk_crtc->ddp_comp_nr; i++) {
@@ -412,10 +413,10 @@ static void mtk_crtc_ddp_hw_fini(struct mtk_drm_crtc *mtk_crtc)
pm_runtime_put(drm->dev);
if (crtc->state->event && !crtc->state->active) {
- spin_lock_irq(&crtc->dev->event_lock);
+ spin_lock_irqsave(&crtc->dev->event_lock, flags);
drm_crtc_send_vblank_event(crtc, crtc->state->event);
crtc->state->event = NULL;
- spin_unlock_irq(&crtc->dev->event_lock);
+ spin_unlock_irqrestore(&crtc->dev->event_lock, flags);
}
}
--
2.43.0
