crypto: aspeed - fix return value check in aspeed_hace_probe()

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

Fixes: 108713a713c7 ("crypto: aspeed - Add HACE hash driver")
Signed-off-by: Sun Ke <sunke32@huawei.com>
Reviewed-by: Neal Liu<neal_liu@aspeedtech.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

diff --git a/drivers/crypto/aspeed/aspeed-hace.c b/drivers/crypto/aspeed/aspeed-hace.c
index 4fefc9e..3f880aa 100644 (file)
--- a/drivers/crypto/aspeed/aspeed-hace.c
+++ b/drivers/crypto/aspeed/aspeed-hace.c
@@ -123,9 +123,9 @@ static int aspeed_hace_probe(struct platform_device *pdev)
        platform_set_drvdata(pdev, hace_dev);
 
        hace_dev->regs = devm_ioremap_resource(&pdev->dev, res);
-       if (!hace_dev->regs) {
+       if (IS_ERR(hace_dev->regs)) {
                dev_err(&pdev->dev, "Failed to map resources\n");
-               return -ENOMEM;
+               return PTR_ERR(hace_dev->regs);
        }
 
        /* Get irq number and register it */