[PATCH -next] gpio: Fix return value check in xgene_gpio_probe()

[weiyj_lk@xxxxxxx]

From: Wei Yongjun <yongjun_wei@xxxxxxxxxxxxxxxxx>

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

Signed-off-by: Wei Yongjun <yongjun_wei@xxxxxxxxxxxxxxxxx>
---
 drivers/gpio/gpio-xgene.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/gpio/gpio-xgene.c b/drivers/gpio/gpio-xgene.c
index e25ba14..cf751f5 100644
--- a/drivers/gpio/gpio-xgene.c
+++ b/drivers/gpio/gpio-xgene.c
@@ -182,8 +182,8 @@ static int xgene_gpio_probe(struct platform_device *pdev)
 	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
 	gpio->base = devm_ioremap_nocache(&pdev->dev, res->start,
 							resource_size(res));
-	if (IS_ERR(gpio->base)) {
-		err = PTR_ERR(gpio->base);
+	if (!gpio->base) {
+		err = -ENOMEM;
 		goto err;
 	}
 

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