diff options
| author | Evgeny Novikov <novikov@ispras.ru> | 2021-05-18 20:57:22 +0200 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab+huawei@kernel.org> | 2021-06-02 14:04:35 +0200 |
| commit | cca65f64045523f923380171bf6d329bfd79970f (patch) | |
| tree | 16a1c6732af0251c8ddd350cf8de8d4b316b3d56 /drivers/media/platform/cadence/cdns-csi2rx.c | |
| parent | 5ef8a20af18716f97875714a32266256f6aa6f60 (diff) | |
media: v4l: cadence: Handle errors of clk_prepare_enable()
Handle errors of clk_prepare_enable() in csi2rx_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>
Diffstat (limited to 'drivers/media/platform/cadence/cdns-csi2rx.c')
| -rw-r--r-- | drivers/media/platform/cadence/cdns-csi2rx.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/drivers/media/platform/cadence/cdns-csi2rx.c b/drivers/media/platform/cadence/cdns-csi2rx.c index c68a3eac62cd..f2b4ddd31177 100644 --- a/drivers/media/platform/cadence/cdns-csi2rx.c +++ b/drivers/media/platform/cadence/cdns-csi2rx.c @@ -282,6 +282,7 @@ static int csi2rx_get_resources(struct csi2rx_priv *csi2rx, struct resource *res; unsigned char i; u32 dev_cfg; + int ret; res = platform_get_resource(pdev, IORESOURCE_MEM, 0); csi2rx->base = devm_ioremap_resource(&pdev->dev, res); @@ -315,7 +316,12 @@ static int csi2rx_get_resources(struct csi2rx_priv *csi2rx, return -EINVAL; } - clk_prepare_enable(csi2rx->p_clk); + ret = clk_prepare_enable(csi2rx->p_clk); + if (ret) { + dev_err(&pdev->dev, "Couldn't prepare and enable P clock\n"); + return ret; + } + dev_cfg = readl(csi2rx->base + CSI2RX_DEVICE_CFG_REG); clk_disable_unprepare(csi2rx->p_clk); |