power/reset: at91: fix return value check in at91_reset_platform_probe()

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@trendmicro.com.cn>
Signed-off-by: Sebastian Reichel <sre@kernel.org>

diff --git a/drivers/power/reset/at91-reset.c b/drivers/power/reset/at91-reset.c
index 01c7055c4200e3d9a7333ac7c0bcaccc3ac2d4a5..ca461ebc7ae8f73338059d6ce9547b850c269f1b 100644 (file)
--- a/drivers/power/reset/at91-reset.c
+++ b/drivers/power/reset/at91-reset.c
@@ -212,9 +212,9 @@ 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;
                }
        }