From: Sasha Levin <sashal@kernel.org>
To: linux-kernel@vger.kernel.org, stable@vger.kernel.org
Cc: Wang Li <wangli74@huawei.com>, Hulk Robot <hulkci@huawei.com>,
Chun-Kuang Hu <chunkuang.hu@kernel.org>,
Sasha Levin <sashal@kernel.org>,
dri-devel@lists.freedesktop.org,
linux-mediatek@lists.infradead.org,
linux-arm-kernel@lists.infradead.org
Subject: [PATCH AUTOSEL 5.13 025/189] drm/mediatek: Fix PM reference leak in mtk_crtc_ddp_hw_init()
Date: Tue, 6 Jul 2021 07:11:25 -0400 [thread overview]
Message-ID: <20210706111409.2058071-25-sashal@kernel.org> (raw)
In-Reply-To: <20210706111409.2058071-1-sashal@kernel.org>
From: Wang Li <wangli74@huawei.com>
[ Upstream commit 69777e6ca396f0a7e1baff40fcad4a9d3d445b7a ]
pm_runtime_get_sync will increment pm usage counter even it failed.
Forgetting to putting operation will result in reference leak here.
Fix it by replacing it with pm_runtime_resume_and_get to keep usage
counter balanced.
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Wang Li <wangli74@huawei.com>
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 | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/mediatek/mtk_drm_crtc.c b/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
index 40df2c823187..474efb844249 100644
--- a/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
+++ b/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
@@ -260,7 +260,7 @@ static int mtk_crtc_ddp_hw_init(struct mtk_drm_crtc *mtk_crtc)
drm_connector_list_iter_end(&conn_iter);
}
- ret = pm_runtime_get_sync(crtc->dev->dev);
+ ret = pm_runtime_resume_and_get(crtc->dev->dev);
if (ret < 0) {
DRM_ERROR("Failed to enable power domain: %d\n", ret);
return ret;
--
2.30.2
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next prev parent reply other threads:[~2021-07-06 11:17 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20210706111409.2058071-1-sashal@kernel.org>
2021-07-06 11:11 ` [PATCH AUTOSEL 5.13 002/189] drm/mxsfb: Don't select DRM_KMS_FB_HELPER Sasha Levin
2021-07-06 11:11 ` [PATCH AUTOSEL 5.13 011/189] drm/imx: ipuv3-plane: do not advertise YUV formats on planes without CSC Sasha Levin
2021-07-06 11:11 ` [PATCH AUTOSEL 5.13 012/189] drm/imx: Add 8 pixel alignment fix Sasha Levin
2021-07-06 11:11 ` Sasha Levin [this message]
2021-07-06 11:11 ` [PATCH AUTOSEL 5.13 041/189] net: xilinx_emaclite: Do not print real IOMEM pointer Sasha Levin
2021-07-06 11:11 ` [PATCH AUTOSEL 5.13 054/189] drm: rockchip: add missing registers for RK3188 Sasha Levin
2021-07-06 11:11 ` [PATCH AUTOSEL 5.13 055/189] drm: rockchip: add missing registers for RK3066 Sasha Levin
2021-07-06 11:11 ` [PATCH AUTOSEL 5.13 056/189] net: stmmac: the XPCS obscures a potential "PHY not found" error Sasha Levin
2021-07-06 11:12 ` [PATCH AUTOSEL 5.13 100/189] net: mido: mdio-mux-bcm-iproc: Use devm_platform_get_and_ioremap_resource() Sasha Levin
2021-07-06 11:13 ` [PATCH AUTOSEL 5.13 122/189] mt76: mt7615: fix fixed-rate tx status reporting Sasha Levin
2021-07-06 11:13 ` [PATCH AUTOSEL 5.13 123/189] mt76: dma: use ieee80211_tx_status_ext to free packets when tx fails Sasha Levin
2021-07-06 11:13 ` [PATCH AUTOSEL 5.13 130/189] mt76: mt7915: fix tssi indication field of DBDC NICs Sasha Levin
2021-07-06 11:13 ` [PATCH AUTOSEL 5.13 131/189] mt76: mt7921: fix reset under the deep sleep is enabled Sasha Levin
2021-07-06 11:13 ` [PATCH AUTOSEL 5.13 132/189] mt76: mt7921: reset wfsys during hw probe Sasha Levin
2021-07-06 11:13 ` [PATCH AUTOSEL 5.13 133/189] mt76: mt7921: enable hw offloading for wep keys Sasha Levin
2021-07-06 11:13 ` [PATCH AUTOSEL 5.13 134/189] mt76: connac: fix UC entry is being overwritten Sasha Levin
2021-07-06 11:13 ` [PATCH AUTOSEL 5.13 135/189] mt76: connac: fix the maximum interval schedule scan can support Sasha Levin
2021-07-06 11:13 ` [PATCH AUTOSEL 5.13 136/189] mt76: mt7915: fix IEEE80211_HE_PHY_CAP7_MAX_NC for station mode Sasha Levin
2021-07-06 11:13 ` [PATCH AUTOSEL 5.13 137/189] mt76: fix iv and CCMP header insertion Sasha Levin
2021-07-06 11:13 ` [PATCH AUTOSEL 5.13 170/189] Bluetooth: btusb: Fixed too many in-token issue for Mediatek Chip Sasha Levin
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