linux-kernel - [PATCH] EDAC, altera: Fix an error handling path in 'altr_edac_device

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Message-Id: <20170816050506.14541-1-christophe.jaillet@wanadoo.fr>
Date:   Wed, 16 Aug 2017 07:05:06 +0200
From:   Christophe JAILLET <christophe.jaillet@...adoo.fr>
To:     thor.thayer@...ux.intel.com, bp@...en8.de, mchehab@...nel.org
Cc:     linux-edac@...r.kernel.org, linux-kernel@...r.kernel.org,
        kernel-janitors@...r.kernel.org,
        Christophe JAILLET <christophe.jaillet@...adoo.fr>
Subject: [PATCH] EDAC, altera: Fix an error handling path in 'altr_edac_device_probe()'

'res' is known to be 0 at this point.
If 'devm_ioremap()' fails, returns -ENOMEM instead of 0 which means
success.

Signed-off-by: Christophe JAILLET <christophe.jaillet@...adoo.fr>
---
 drivers/edac/altera_edac.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/edac/altera_edac.c b/drivers/edac/altera_edac.c
index fa2e5db56d24..346c4987b284 100644
--- a/drivers/edac/altera_edac.c
+++ b/drivers/edac/altera_edac.c
@@ -747,8 +747,10 @@ static int altr_edac_device_probe(struct platform_device *pdev)
 	drvdata->edac_dev_name = ecc_name;
 
 	drvdata->base = devm_ioremap(&pdev->dev, r->start, resource_size(r));
-	if (!drvdata->base)
+	if (!drvdata->base) {
+		res = -ENOMEM;
 		goto fail1;
+	}
 
 	/* Get driver specific data for this EDAC device */
 	drvdata->data = of_match_node(altr_edac_device_of_match, np)->data;
-- 
2.11.0