[alsa-devel] [PATCH -next] slimbus: qcom: Fix return value check in qcom_slim_probe()

[Wei Yongjun]

In case of error, the function devm_ioremap_resource() returns ERR_PTR()
and never returns NULL. The NULL test in the return value check should
be replaced with IS_ERR().

Fixes: ad7fcbc308b0 ("slimbus: qcom: Add Qualcomm Slimbus controller driver")
Signed-off-by: Wei Yongjun <weiyongjun1 at huawei.com>
---
 drivers/slimbus/qcom-ctrl.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/slimbus/qcom-ctrl.c b/drivers/slimbus/qcom-ctrl.c
index 35ad70d..96fefd6 100644
--- a/drivers/slimbus/qcom-ctrl.c
+++ b/drivers/slimbus/qcom-ctrl.c
@@ -530,9 +530,9 @@ static int qcom_slim_probe(struct platform_device *pdev)
 
 	slim_mem = platform_get_resource_byname(pdev, IORESOURCE_MEM, "ctrl");
 	ctrl->base = devm_ioremap_resource(ctrl->dev, slim_mem);
-	if (!ctrl->base) {
+	if (IS_ERR(ctrl->base)) {
 		dev_err(&pdev->dev, "IOremap failed\n");
-		return -ENOMEM;
+		return PTR_ERR(ctrl->base);
 	}
 
 	sctrl->set_laddr = qcom_set_laddr;