diff mbox series

[-next] serial: liteuart: fix return value check in liteuart_probe()

Message ID 20210305034929.3234352-1-weiyongjun1@huawei.com
State New
Headers show
Series [-next] serial: liteuart: fix return value check in liteuart_probe() | expand

Commit Message

Wei Yongjun March 5, 2021, 3:49 a.m. UTC 
From: Wei Yongjun <weiyongjun1@huawei.com>

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

Fixes: 1da81e5562fa ("drivers/tty/serial: add LiteUART driver")
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
---
 drivers/tty/serial/liteuart.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)
diff mbox series

Patch

diff --git a/drivers/tty/serial/liteuart.c b/drivers/tty/serial/liteuart.c
index 64842f3539e1..0b06770642cb 100644
--- a/drivers/tty/serial/liteuart.c
+++ b/drivers/tty/serial/liteuart.c
@@ -270,8 +270,8 @@  static int liteuart_probe(struct platform_device *pdev)
 
 	/* get membase */
 	port->membase = devm_platform_get_and_ioremap_resource(pdev, 0, NULL);
-	if (!port->membase)
-		return -ENXIO;
+	if (IS_ERR(port->membase))
+		return PTR_ERR(port->membase);
 
 	/* values not from device tree */
 	port->dev = &pdev->dev;