Commit 5dc63fdc authored by Arvind Yadav's avatar Arvind Yadav Committed by Tejun Heo
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ata: sata_rcar: Handle return value of clk_prepare_enable 



Here, Clock enable can failed. So adding an error check for
clk_prepare_enable.

tj: minor style updates

Signed-off-by: default avatarArvind Yadav <arvind.yadav.cs@gmail.com>
Signed-off-by: default avatarTejun Heo <tj@kernel.org>
parent 8bfd1743

drivers/ata/sata_rcar.c

+12 −3
Original line number Diff line number Diff line
@@ -890,7 +890,10 @@ static int sata_rcar_probe(struct platform_device *pdev) 
		dev_err(&pdev->dev, "failed to get access to sata clock\n");

		return PTR_ERR(priv->clk);

	}

	clk_prepare_enable(priv->clk);



	ret = clk_prepare_enable(priv->clk);

	if (ret)

		return ret;



	host = ata_host_alloc(&pdev->dev, 1);

	if (!host) {
@@ -970,8 +973,11 @@ static int sata_rcar_resume(struct device *dev) 
	struct ata_host *host = dev_get_drvdata(dev);

	struct sata_rcar_priv *priv = host->private_data;

	void __iomem *base = priv->base;

	int ret;



	clk_prepare_enable(priv->clk);

	ret = clk_prepare_enable(priv->clk);

	if (ret)

		return ret;



	/* ack and mask */

	iowrite32(0, base + SATAINTSTAT_REG);
@@ -988,8 +994,11 @@ static int sata_rcar_restore(struct device *dev) 
{

	struct ata_host *host = dev_get_drvdata(dev);

	struct sata_rcar_priv *priv = host->private_data;

	int ret;



	clk_prepare_enable(priv->clk);

	ret = clk_prepare_enable(priv->clk);

	if (ret)

		return ret;



	sata_rcar_setup_port(host);