From: Sasha Levin <sashal@kernel.org>
To: linux-kernel@vger.kernel.org, stable@vger.kernel.org
Cc: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>,
Jonathan Cameron <Jonathan.Cameron@huawei.com>,
Sasha Levin <sashal@kernel.org>,
linux-media@vger.kernel.org,
linux-arm-kernel@lists.infradead.org,
linux-sunxi@lists.linux.dev
Subject: [PATCH AUTOSEL 5.13 12/85] media: sunxi: fix pm_runtime_get_sync() usage count
Date: Sun, 4 Jul 2021 19:03:07 -0400 [thread overview]
Message-ID: <20210704230420.1488358-12-sashal@kernel.org> (raw)
In-Reply-To: <20210704230420.1488358-1-sashal@kernel.org>
From: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
[ Upstream commit 9c298f82d8392f799a0595f50076afa1d91e9092 ]
The pm_runtime_get_sync() internally increments the
dev->power.usage_count without decrementing it, even on errors.
Replace it by the new pm_runtime_resume_and_get(), introduced by:
commit dd8088d5a896 ("PM: runtime: Add pm_runtime_resume_and_get to deal with usage counter")
in order to properly decrement the usage counter, avoiding
a potential PM usage counter leak.
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/media/platform/sunxi/sun8i-rotate/sun8i_rotate.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/media/platform/sunxi/sun8i-rotate/sun8i_rotate.c b/drivers/media/platform/sunxi/sun8i-rotate/sun8i_rotate.c
index 3f81dd17755c..fbcca59a0517 100644
--- a/drivers/media/platform/sunxi/sun8i-rotate/sun8i_rotate.c
+++ b/drivers/media/platform/sunxi/sun8i-rotate/sun8i_rotate.c
@@ -494,7 +494,7 @@ static int rotate_start_streaming(struct vb2_queue *vq, unsigned int count)
struct device *dev = ctx->dev->dev;
int ret;
- ret = pm_runtime_get_sync(dev);
+ ret = pm_runtime_resume_and_get(dev);
if (ret < 0) {
dev_err(dev, "Failed to enable module\n");
--
2.30.2
next parent reply other threads:[~2021-07-04 23:04 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20210704230420.1488358-1-sashal@kernel.org>
2021-07-04 23:03 ` Sasha Levin [this message]
2021-07-04 23:03 ` [PATCH AUTOSEL 5.13 28/85] media: hevc: Fix dependent slice segment flags Sasha Levin
2021-07-04 23:03 ` [PATCH AUTOSEL 5.13 43/85] media: cedrus: Fix .buf_prepare Sasha Levin
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