linux-kernel - [PATCH] memory: fsl-corenet-cf: Fix handling of platform_get

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Date:   Thu, 27 Aug 2020 09:33:15 +0200
From:   Krzysztof Kozlowski <krzk@...nel.org>
To:     Krzysztof Kozlowski <krzk@...nel.org>,
        Scott Wood <scottwood@...escale.com>,
        Bharat Bhushan <bharat.bhushan@...escale.com>,
        linux-kernel@...r.kernel.org
Subject: [PATCH] memory: fsl-corenet-cf: Fix handling of platform_get_irq() error

platform_get_irq() returns -ERRNO on error.  In such case comparison
to 0 would pass the check.

Fixes: 54afbec0d57f ("memory: Freescale CoreNet Coherency Fabric error reporting driver")
Signed-off-by: Krzysztof Kozlowski <krzk@...nel.org>
---
 drivers/memory/fsl-corenet-cf.c | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/drivers/memory/fsl-corenet-cf.c b/drivers/memory/fsl-corenet-cf.c
index 0b0ed72016da..0309bd5a1800 100644
--- a/drivers/memory/fsl-corenet-cf.c
+++ b/drivers/memory/fsl-corenet-cf.c
@@ -211,10 +211,8 @@ static int ccf_probe(struct platform_device *pdev)
 	dev_set_drvdata(&pdev->dev, ccf);
 
 	irq = platform_get_irq(pdev, 0);
-	if (!irq) {
-		dev_err(&pdev->dev, "%s: no irq\n", __func__);
-		return -ENXIO;
-	}
+	if (irq < 0)
+		return irq;
 
 	ret = devm_request_irq(&pdev->dev, irq, ccf_irq, 0, pdev->name, ccf);
 	if (ret) {
-- 
2.17.1