[PATCH 6/6 v3] mmc: sunxi-mmc: Handle return value of platform_get_irq

[Arvind Yadav]

platform_get_irq() can fail here and we must check its return value.

Signed-off-by: Arvind Yadav <arvind.yadav...@gmail.com>
---
changes in v2 :
              Add failure case '<= 0' instead of '< 0'. IRQ0 is not valid.
changes in v3 :
              return -EINVAL instead of host->irq.

 drivers/mmc/host/sunxi-mmc.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/drivers/mmc/host/sunxi-mmc.c b/drivers/mmc/host/sunxi-mmc.c
index cc98355d..c926ac8 100644
--- a/drivers/mmc/host/sunxi-mmc.c
+++ b/drivers/mmc/host/sunxi-mmc.c
@@ -1255,6 +1255,11 @@ static int sunxi_mmc_resource_request(struct 
sunxi_mmc_host *host,
                goto error_assert_reset;
 
        host->irq = platform_get_irq(pdev, 0);
+       if (host->irq <= 0) {
+               ret = -EINVAL;
+               goto error_assert_reset;
+       }
+
        return devm_request_threaded_irq(&pdev->dev, host->irq, sunxi_mmc_irq,
                        sunxi_mmc_handle_manual_stop, 0, "sunxi-mmc", host);
 
-- 
2.7.4