drm/bridge: cdns: Fix PM reference leak in cdns_dsi_transfer()
authorZou Wei <zou_wei@huawei.com>
Mon, 24 May 2021 07:21:02 +0000 (15:21 +0800)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Mon, 19 Jul 2021 07:44:42 +0000 (09:44 +0200)
commit0680344d713195e1dc67e597bca8bb97b1498a21
tree0cc444b45052afd6ab5abefb52339f959c51b9b7
parent95f8ce9f18cb30d7d9b6b63a278bbfea6befac2d
drm/bridge: cdns: Fix PM reference leak in cdns_dsi_transfer()

[ Upstream commit 33f90f27e1c5ccd648d3e78a1c28be9ee8791cf1 ]

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: Zou Wei <zou_wei@huawei.com>
Reviewed-by: Robert Foss <robert.foss@linaro.org>
Signed-off-by: Robert Foss <robert.foss@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/1621840862-106024-1-git-send-email-zou_wei@huawei.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
drivers/gpu/drm/bridge/cdns-dsi.c