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mmc: sdhci-brcmstb: Fix driver to defer on clk_get defer 

The new SCMI clock protocol driver does not get probed that early in
boot. Brcmstb drivers typically have the following code when getting
a clock:

        priv->clk = devm_clk_get(&pdev->dev, NULL);
        if (IS_ERR(priv->clk)) {
                dev_err(&pdev->dev, "Clock not found in Device Tree\n");
                priv->clk = NULL;
        }

This commit changes the driver to do what is below.

        priv->clk = devm_clk_get(&pdev->dev, NULL);
        if (IS_ERR(priv->clk)) {
                if (PTR_ERR(priv->clk) == -EPROBE_DEFER)
                        return -EPROBE_DEFER;
                dev_err(&pdev->dev, "Clock not found in Device Tree\n");
                priv->clk = NULL;
        }

Signed-off-by: Al Cooper <alcooperx@gmail.com>
Link: https://lore.kernel.org/r/20200113210706.11972-4-alcooperx@gmail.com
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
This commit is contained in:
Al Cooper 2020-01-13 16:07:03 -05:00 committed by Ulf Hansson
parent 78ab82fdb6
commit 6f2aa55b85
1 changed files with 2 additions and 0 deletions
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2
drivers/mmc/host/sdhci-brcmstb.c
View File

@ -91,6 +91,8 @@ static int sdhci_brcmstb_probe(struct platform_device *pdev)
clk = devm_clk_get(&pdev->dev, NULL);
if (IS_ERR(clk)) {
if (PTR_ERR(clk) == -EPROBE_DEFER)
return -EPROBE_DEFER;
dev_err(&pdev->dev, "Clock not found in Device Tree\n");
clk = NULL;
}