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media: v4l: cadence: Handle errors of clk_prepare_enable()

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Handle errors of clk_prepare_enable() in csi2tx_get_resources().

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>
This commit is contained in:
Evgeny Novikov
2021-05-17 14:49:18 +02:00
committed by Mauro Carvalho Chehab
parent 8610b3a2ab
commit e6001f6922
1 changed files with 7 additions and 1 deletions
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8
drivers/media/platform/cadence/cdns-csi2tx.c
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@@ -436,6 +436,7 @@ static int csi2tx_get_resources(struct csi2tx_priv *csi2tx,
struct resource *res;
unsigned int i;
u32 dev_cfg;
int ret;
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
csi2tx->base = devm_ioremap_resource(&pdev->dev, res);
@@ -454,7 +455,12 @@ static int csi2tx_get_resources(struct csi2tx_priv *csi2tx,
return PTR_ERR(csi2tx->esc_clk);
}
clk_prepare_enable(csi2tx->p_clk);
ret = clk_prepare_enable(csi2tx->p_clk);
if (ret) {
dev_err(&pdev->dev, "Couldn't prepare and enable p_clk\n");
return ret;
}
dev_cfg = readl(csi2tx->base + CSI2TX_DEVICE_CONFIG_REG);
clk_disable_unprepare(csi2tx->p_clk);