From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id DF5C81D2F6E; Wed, 2 Oct 2024 14:03:13 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1727877794; cv=none; b=L20VlKVPB7IwF0KtQL0y3a9pIQI77TOGOVJH7TF2+lN7p+KeDakd0NhsJZ+guD8+Q0xPJu3nGv/Z4pGuUHJGBkUPjWtKv1d9TSbpqA4O9LqV0SJefiSTUJoTFZ5zRKaf8xK1Vj/9NKuG/BcxhVeI+vBr+pdxW7QQqDKvJnPOrLM= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1727877794; c=relaxed/simple; bh=FycatTYOxYEIiq6k4+Qr1RXD6uzTaK/qDwDmRtWcxdI=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=tVQ4gaAt5X6uIAmc7/QDQSyPA37PF+UYYGybqR2VeWSkiMAZ7ZsJAAEVL7j3OMSuPeuf54qXG/VS32Xgxm94faooG/G1SzOktM5b4kpEMkPFNyK32zZzQJhyxVTBnjKe+YzKOEzJ9ayNM2YW9uj/dNFRhSMz6kTh7MKknH4UjwA= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=Pd7MZHpS; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="Pd7MZHpS" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 6B5BDC4CED4; Wed, 2 Oct 2024 14:03:13 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1727877793; bh=FycatTYOxYEIiq6k4+Qr1RXD6uzTaK/qDwDmRtWcxdI=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=Pd7MZHpSLjnX5wwg03vRIWWcxg/VmgYHx1tRtK7mHagR/DRBsbG1AAjFdVT1nsRKQ zlHLNhb4epSNA2jv1arpyPEKSSgE1K4szX94KimW67tUhKJU//sffn/EV7EBrbmWiE XeGiE9wJRgqYQvYQGyqTG7QeB1PkFTvEkTWjqXcI= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Fei Shao , Chun-Kuang Hu , Sasha Levin Subject: [PATCH 6.10 195/634] drm/mediatek: Use spin_lock_irqsave() for CRTC event lock Date: Wed, 2 Oct 2024 14:54:55 +0200 Message-ID: <20241002125818.802068424@linuxfoundation.org> X-Mailer: git-send-email 2.46.2 In-Reply-To: <20241002125811.070689334@linuxfoundation.org> References: <20241002125811.070689334@linuxfoundation.org> User-Agent: quilt/0.67 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 6.10-stable review patch. If anyone has any objections, please let me know. ------------------ From: Fei Shao [ 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 Link: https://patchwork.kernel.org/project/dri-devel/patch/20240828101511.3269822-1-fshao@chromium.org/ Signed-off-by: Chun-Kuang Hu Signed-off-by: Sasha Levin --- drivers/gpu/drm/mediatek/mtk_crtc.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/mediatek/mtk_crtc.c b/drivers/gpu/drm/mediatek/mtk_crtc.c index d7f0926f896d6..a90504359e8d2 100644 --- a/drivers/gpu/drm/mediatek/mtk_crtc.c +++ b/drivers/gpu/drm/mediatek/mtk_crtc.c @@ -467,6 +467,7 @@ static void mtk_crtc_ddp_hw_fini(struct mtk_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++) { @@ -498,10 +499,10 @@ static void mtk_crtc_ddp_hw_fini(struct mtk_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