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From:   Arvind Yadav <arvind.yadav.cs@gmail.com>
To:     ben-linux@fluff.org, ulf.hansson@linaro.org,
        adrian.hunter@intel.com, vireshk@kernel.org,
        maxime.ripard@free-electrons.com, wens@csie.org,
        linux@armlinux.org.uk, carlo@caione.org, khilman@baylibre.com
Cc:     linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
        linux-mmc@vger.kernel.org, linux-amlogic@lists.infradead.org
Subject: [PATCH 1/6 v2] mmc: meson-gx-mmc: Fix platform_get_irq's error checking
Date:   Sat, 18 Nov 2017 15:03:43 +0530
Message-Id: <130df0c2c60ed6a0f460b68c586cc0a4167aed0b.1510997223.git.arvind.yadav.cs@gmail.com>
Sender: linux-kernel-owner@vger.kernel.org
Precedence: bulk

The platform_get_irq() function returns negative if an error occurs.
zero or positive number on success. platform_get_irq() error checking
for zero is not correct.

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

 drivers/mmc/host/meson-gx-mmc.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/mmc/host/meson-gx-mmc.c b/drivers/mmc/host/meson-gx-mmc.c
index e0862d3..d6a0695 100644
--- a/drivers/mmc/host/meson-gx-mmc.c
+++ b/drivers/mmc/host/meson-gx-mmc.c
@@ -1208,9 +1208,9 @@ static int meson_mmc_probe(struct platform_device *pdev)
 	}
 
 	irq = platform_get_irq(pdev, 0);
-	if (!irq) {
+	if (irq <= 0) {
 		dev_err(&pdev->dev, "failed to get interrupt resource.\n");
-		ret = -EINVAL;
+		ret = irq;
 		goto free_host;
 	}
 
-- 
2.7.4


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