spi: fsl-lpspi: Fix PM reference leak in lpspi_prepare_xfer_hardware()
authorWang Li <wangli74@huawei.com>
Fri, 9 Apr 2021 09:54:30 +0000 (09:54 +0000)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Fri, 14 May 2021 07:50:18 +0000 (09:50 +0200)
commitce02e58ddf8658a4c3bed2296f32a5873b3f7cce
tree61bab8377ab56471fa058a3fb99b599e713886fe
parentcbe254a1fdce3b7ebb9a2a2f04ce35e04fa9b1f6
spi: fsl-lpspi: Fix PM reference leak in lpspi_prepare_xfer_hardware()

[ Upstream commit a03675497970a93fcf25d81d9d92a59c2d7377a7 ]

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.

Fixes: 944c01a889d9 ("spi: lpspi: enable runtime pm for lpspi")
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Wang Li <wangli74@huawei.com>
Link: https://lore.kernel.org/r/20210409095430.29868-1-wangli74@huawei.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
drivers/spi/spi-fsl-lpspi.c