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Message-Id: <1642567073-25784-1-git-send-email-lyz_cs@pku.edu.cn> Date: Tue, 18 Jan 2022 20:37:53 -0800 From: Yongzhi Liu <lyz_cs@....edu.cn> To: hjc@...k-chips.com, heiko@...ech.de, airlied@...ux.ie, daniel@...ll.ch Cc: dri-devel@...ts.freedesktop.org, linux-arm-kernel@...ts.infradead.org, linux-rockchip@...ts.infradead.org, linux-kernel@...r.kernel.org, Yongzhi Liu <lyz_cs@....edu.cn> Subject: [PATCH] drm/rockchip: Fix runtime PM imbalance on error pm_runtime_get_sync() will increase the rumtime PM counter even it returns an error. Thus a pairing decrement is needed to prevent refcount leak. Fix this by replacing this API with pm_runtime_resume_and_get(), which will not change the runtime PM counter on error. Signed-off-by: Yongzhi Liu <lyz_cs@....edu.cn> --- drivers/gpu/drm/rockchip/dw-mipi-dsi-rockchip.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/gpu/drm/rockchip/dw-mipi-dsi-rockchip.c b/drivers/gpu/drm/rockchip/dw-mipi-dsi-rockchip.c index 4ed7a68..9cf53f0 100644 --- a/drivers/gpu/drm/rockchip/dw-mipi-dsi-rockchip.c +++ b/drivers/gpu/drm/rockchip/dw-mipi-dsi-rockchip.c @@ -1188,7 +1188,7 @@ static int dw_mipi_dsi_dphy_power_on(struct phy *phy) return i; } - ret = pm_runtime_get_sync(dsi->dev); + ret = pm_runtime_resume_and_get(dsi->dev); if (ret < 0) { DRM_DEV_ERROR(dsi->dev, "failed to enable device: %d\n", ret); return ret; -- 2.7.4
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