diff options
| author | Arvind Yadav <arvind.yadav.cs@gmail.com> | 2017-08-08 08:57:43 +0300 |
|---|---|---|
| committer | Ulf Hansson <ulf.hansson@linaro.org> | 2017-08-30 15:01:55 +0300 |
| commit | a2bc74cfee87bdf0f656ada0e5deed6237f31eaf (patch) | |
| tree | 12516c47dab4bdc566719168837c8340e16774c5 /drivers/mmc/host/mxcmmc.c | |
| parent | 78bb1fd7f15066ee300fa5adf3af005f4b7a365c (diff) | |
| download | linux-a2bc74cfee87bdf0f656ada0e5deed6237f31eaf.tar.xz | |
mmc: mxcmmc: Handle return value of clk_prepare_enable
clk_prepare_enable() can fail here and we must check its return value.
Signed-off-by: Arvind Yadav <arvind.yadav.cs@gmail.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Diffstat (limited to 'drivers/mmc/host/mxcmmc.c')
| -rw-r--r-- | drivers/mmc/host/mxcmmc.c | 25 |
1 files changed, 19 insertions, 6 deletions
diff --git a/drivers/mmc/host/mxcmmc.c b/drivers/mmc/host/mxcmmc.c index f2b6639634d2..1d5418e4efae 100644 --- a/drivers/mmc/host/mxcmmc.c +++ b/drivers/mmc/host/mxcmmc.c @@ -1103,8 +1103,13 @@ static int mxcmci_probe(struct platform_device *pdev) goto out_free; } - clk_prepare_enable(host->clk_per); - clk_prepare_enable(host->clk_ipg); + ret = clk_prepare_enable(host->clk_per); + if (ret) + goto out_free; + + ret = clk_prepare_enable(host->clk_ipg); + if (ret) + goto out_clk_per_put; mxcmci_softreset(host); @@ -1173,8 +1178,9 @@ out_free_dma: dma_release_channel(host->dma); out_clk_put: - clk_disable_unprepare(host->clk_per); clk_disable_unprepare(host->clk_ipg); +out_clk_per_put: + clk_disable_unprepare(host->clk_per); out_free: mmc_free_host(mmc); @@ -1217,10 +1223,17 @@ static int __maybe_unused mxcmci_resume(struct device *dev) { struct mmc_host *mmc = dev_get_drvdata(dev); struct mxcmci_host *host = mmc_priv(mmc); + int ret; - clk_prepare_enable(host->clk_per); - clk_prepare_enable(host->clk_ipg); - return 0; + ret = clk_prepare_enable(host->clk_per); + if (ret) + return ret; + + ret = clk_prepare_enable(host->clk_ipg); + if (ret) + clk_disable_unprepare(host->clk_per); + + return ret; } static SIMPLE_DEV_PM_OPS(mxcmci_pm_ops, mxcmci_suspend, mxcmci_resume); |