6.6-stable review patch. If anyone has any objections, please let me know.
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From: Fei Shao fshao@chromium.org
[ 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@chromium.org Link: https://patchwork.kernel.org/project/dri-devel/patch/20240828101511.3269822-... Signed-off-by: Chun-Kuang Hu chunkuang.hu@kernel.org Signed-off-by: Sasha Levin sashal@kernel.org --- 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 5a1c8b26f1bb1..659112da47b69 100644 --- a/drivers/gpu/drm/mediatek/mtk_drm_crtc.c +++ b/drivers/gpu/drm/mediatek/mtk_drm_crtc.c @@ -450,6 +450,7 @@ 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++) { @@ -481,10 +482,10 @@ 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); } }