The function platform_get_irq() can fail; it returns a negative error
code on error. A negative IRQ number will make sdhci_add_host() fail
to request IRQ anyway, but it makes sense to let it fail earlier here.
Signed-off-by: Masahiro Yamada <yamada.masahiro@xxxxxxxxxxxxx>
---
drivers/mmc/host/sdhci-pltfm.c | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/drivers/mmc/host/sdhci-pltfm.c b/drivers/mmc/host/sdhci-pltfm.c
index 7d12203..3354a53 100644
--- a/drivers/mmc/host/sdhci-pltfm.c
+++ b/drivers/mmc/host/sdhci-pltfm.c
@@ -152,6 +152,11 @@ struct sdhci_host *sdhci_pltfm_init(struct platform_device *pdev,
}
host->irq = platform_get_irq(pdev, 0);
+ if (host->irq < 0) {
+ dev_err(&pdev->dev, "failed to get IRQ number");
+ ret = host->irq;
+ goto err_request;
+ }
if (!request_mem_region(iomem->start, resource_size(iomem),
mmc_hostname(host->mmc))) {
--
1.9.1
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