linux-kernel - [PATCH 1/2] EDAC/aspeed: Fix handling of platform_get

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Message-Id: <20200827070743.26628-1-krzk@kernel.org>
Date:   Thu, 27 Aug 2020 09:07:42 +0200
From:   Krzysztof Kozlowski <krzk@...nel.org>
To:     Stefan Schaeckeler <sschaeck@...co.com>,
        Borislav Petkov <bp@...en8.de>,
        Mauro Carvalho Chehab <mchehab@...nel.org>,
        Tony Luck <tony.luck@...el.com>,
        James Morse <james.morse@....com>,
        Robert Richter <rric@...nel.org>,
        Joel Stanley <joel@....id.au>,
        Andrew Jeffery <andrew@...id.au>,
        Tero Kristo <t-kristo@...com>, linux-edac@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org,
        linux-aspeed@...ts.ozlabs.org, linux-kernel@...r.kernel.org
Cc:     Krzysztof Kozlowski <krzk@...nel.org>
Subject: [PATCH 1/2] EDAC/aspeed: 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: 9b7e6242ee4e ("EDAC, aspeed: Add an Aspeed AST2500 EDAC driver")
Signed-off-by: Krzysztof Kozlowski <krzk@...nel.org>
---
 drivers/edac/aspeed_edac.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/edac/aspeed_edac.c b/drivers/edac/aspeed_edac.c
index b194658b8b5c..fbec28dc661d 100644
--- a/drivers/edac/aspeed_edac.c
+++ b/drivers/edac/aspeed_edac.c
@@ -209,8 +209,8 @@ static int config_irq(void *ctx, struct platform_device *pdev)
 	/* register interrupt handler */
 	irq = platform_get_irq(pdev, 0);
 	dev_dbg(&pdev->dev, "got irq %d\n", irq);
-	if (!irq)
-		return -ENODEV;
+	if (irq < 0)
+		return irq;
 
 	rc = devm_request_irq(&pdev->dev, irq, mcr_isr, IRQF_TRIGGER_HIGH,
 			      DRV_NAME, ctx);
-- 
2.17.1