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

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Message-Id: <20200827070743.26628-2-krzk@kernel.org>
Date:   Thu, 27 Aug 2020 09:07:43 +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 2/2] EDAC/ti: 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: 86a18ee21e5e ("EDAC, ti: Add support for TI keystone and DRA7xx EDAC")
Signed-off-by: Krzysztof Kozlowski <krzk@...nel.org>
---
 drivers/edac/ti_edac.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/edac/ti_edac.c b/drivers/edac/ti_edac.c
index 6e52796a0b41..e7eae20f83d1 100644
--- a/drivers/edac/ti_edac.c
+++ b/drivers/edac/ti_edac.c
@@ -278,7 +278,8 @@ static int ti_edac_probe(struct platform_device *pdev)
 
 	/* add EMIF ECC error handler */
 	error_irq = platform_get_irq(pdev, 0);
-	if (!error_irq) {
+	if (error_irq < 0) {
+		ret = error_irq;
 		edac_printk(KERN_ERR, EDAC_MOD_NAME,
 			    "EMIF irq number not defined.\n");
 		goto err;
-- 
2.17.1