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media: tegra-cec: Handle errors of clk_prepare_enable()

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[ Upstream commit 38367073c796a37a61549b1f66a71b3adb03802d ]

tegra_cec_probe() and tegra_cec_resume() ignored possible errors of
clk_prepare_enable(). The patch fixes this.

Found by Linux Driver Verification project (linuxtesting.org).

Signed-off-by: Evgeny Novikov <novikov@ispras.ru>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Evgeny Novikov 2021-07-28 16:44:32 +02:00 committed by Greg Kroah-Hartman
parent c159db240c
commit 4e014ff22e
1 changed files with 6 additions and 4 deletions
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10
drivers/media/cec/platform/tegra/tegra_cec.c
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@ -366,7 +366,11 @@ static int tegra_cec_probe(struct platform_device *pdev)
return -ENOENT;
}
clk_prepare_enable(cec->clk);
ret = clk_prepare_enable(cec->clk);
if (ret) {
dev_err(&pdev->dev, "Unable to prepare clock for CEC\n");
return ret;
}
/* set context info. */
cec->dev = &pdev->dev;
@ -446,9 +450,7 @@ static int tegra_cec_resume(struct platform_device *pdev)
dev_notice(&pdev->dev, "Resuming\n");
clk_prepare_enable(cec->clk);
return 0;
return clk_prepare_enable(cec->clk);
}
#endif