Commit e6001f69 authored by Evgeny Novikov's avatar Evgeny Novikov Committed by Mauro Carvalho Chehab
Browse files

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



Handle errors of clk_prepare_enable() in csi2tx_get_resources().

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

Signed-off-by: default avatarEvgeny Novikov <novikov@ispras.ru>
Signed-off-by: default avatarHans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: default avatarMauro Carvalho Chehab <mchehab+huawei@kernel.org>
parent 8610b3a2

drivers/media/platform/cadence/cdns-csi2tx.c

+7 −1
Original line number Diff line number Diff line
@@ -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);