linux-kernel - [PATCH 0/3] drm/rockchip: fix reference leak when pm_runtime_get

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Message-ID: <20201201125459.142178-1-miaoqinglang@huawei.com>
Date:   Tue, 1 Dec 2020 20:54:56 +0800
From:   Qinglang Miao <miaoqinglang@...wei.com>
To:     Sandy Huang <hjc@...k-chips.com>,
        Heiko Stübner <heiko@...ech.de>,
        David Airlie <airlied@...ux.ie>,
        Daniel Vetter <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>,
        Qinglang Miao <miaoqinglang@...wei.com>
Subject: [PATCH 0/3] drm/rockchip: fix reference leak when pm_runtime_get_sync fails

pm_runtime_get_sync will increment the PM reference count
even failed. Forgetting to putting operation will result
in a reference leak here. 

Replace it with pm_runtime_resume_and_get to keep usage
counter balanced. 

BTW, pm_runtime_resume_and_get is introduced in v5.10-rc5 as
dd8088d5a896 ("PM: runtime: Add  pm_runtime_resume_and_get
to dealwith usage counter")

Qinglang Miao (3):
  drm/rockchip: cdn-dp: fix reference leak when pm_runtime_get_sync
    fails
  drm/rockchip: vop: fix reference leak when pm_runtime_get_sync fails
  drm/rockchip: lvds: fix reference leak when pm_runtime_get_sync fails

 drivers/gpu/drm/rockchip/cdn-dp-core.c      | 2 +-
 drivers/gpu/drm/rockchip/rockchip_drm_vop.c | 4 ++--
 drivers/gpu/drm/rockchip/rockchip_lvds.c    | 4 ++--
 3 files changed, 5 insertions(+), 5 deletions(-)

-- 
2.23.0