linux-kernel - [PATCH 3.19.y-ckt 070/146] power/reset: at91: fix return value check in at91_reset_platform

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Message-Id: <1434579851-1719-71-git-send-email-kamal@canonical.com>
Date:	Wed, 17 Jun 2015 15:22:55 -0700
From:	Kamal Mostafa <kamal@...onical.com>
To:	linux-kernel@...r.kernel.org, stable@...r.kernel.org,
	kernel-team@...ts.ubuntu.com
Cc:	Wei Yongjun <yongjun_wei@...ndmicro.com.cn>,
	Sebastian Reichel <sre@...nel.org>,
	Kamal Mostafa <kamal@...onical.com>
Subject: [PATCH 3.19.y-ckt 070/146] power/reset: at91: fix return value check in at91_reset_platform_probe()

3.19.8-ckt2 -stable review patch.  If anyone has any objections, please let me know.

------------------

From: Wei Yongjun <yongjun_wei@...ndmicro.com.cn>

commit 932df43005389300a3336421e4aedb25390ae144 upstream.

In case of error, the function devm_ioremap() returns NULL
not ERR_PTR(). The IS_ERR() test in the return value check
should be replaced with NULL test.

Fixes: ecfe64d8c55f ("power: reset: Add AT91 reset driver")
Signed-off-by: Wei Yongjun <yongjun_wei@...ndmicro.com.cn>
Signed-off-by: Sebastian Reichel <sre@...nel.org>
Signed-off-by: Kamal Mostafa <kamal@...onical.com>
---
 drivers/power/reset/at91-reset.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/power/reset/at91-reset.c b/drivers/power/reset/at91-reset.c
index 69a75d99..3f7d20f 100644
--- a/drivers/power/reset/at91-reset.c
+++ b/drivers/power/reset/at91-reset.c
@@ -205,9 +205,9 @@ static int at91_reset_platform_probe(struct platform_device *pdev)
 		res = platform_get_resource(pdev, IORESOURCE_MEM, idx + 1 );
 		at91_ramc_base[idx] = devm_ioremap(&pdev->dev, res->start,
 						   resource_size(res));
-		if (IS_ERR(at91_ramc_base[idx])) {
+		if (!at91_ramc_base[idx]) {
 			dev_err(&pdev->dev, "Could not map ram controller address\n");
-			return PTR_ERR(at91_ramc_base[idx]);
+			return -ENOMEM;
 		}
 	}
 
-- 
1.9.1

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