From 21b22284619bbb201775c125af53f2834eb91674 Mon Sep 17 00:00:00 2001 From: Alexey Khoroshilov Date: Sat, 11 Feb 2017 01:54:46 +0300 Subject: [PATCH] mmc: sdhci-pxav2: add error handling of clk_prepare_enable() There is no check if clk_prepare_enable() succeed in sdhci_pxav2_probe(). Found by Linux Driver Verification project (linuxtesting.org). Signed-off-by: Alexey Khoroshilov Acked-by: Adrian Hunter Signed-off-by: Ulf Hansson --- drivers/mmc/host/sdhci-pxav2.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) diff --git a/drivers/mmc/host/sdhci-pxav2.c b/drivers/mmc/host/sdhci-pxav2.c index 347eae2d7b6a..80513f54e9d4 100644 --- a/drivers/mmc/host/sdhci-pxav2.c +++ b/drivers/mmc/host/sdhci-pxav2.c @@ -185,7 +185,11 @@ static int sdhci_pxav2_probe(struct platform_device *pdev) goto err_clk_get; } pltfm_host->clk = clk; - clk_prepare_enable(clk); + ret = clk_prepare_enable(clk); + if (ret) { + dev_err(&pdev->dev, "failed to enable io clock\n"); + goto err_clk_enable; + } host->quirks = SDHCI_QUIRK_BROKEN_ADMA | SDHCI_QUIRK_BROKEN_TIMEOUT_VAL @@ -228,6 +232,7 @@ static int sdhci_pxav2_probe(struct platform_device *pdev) err_add_host: clk_disable_unprepare(clk); +err_clk_enable: clk_put(clk); err_clk_get: sdhci_pltfm_free(pdev);