diff mbox series

serial: atmel: Check return value of platform_get_irq() in atmel_init_port()

Message ID 20231018091521.314706-1-yiyang13@huawei.com
State New
Headers show
Series serial: atmel: Check return value of platform_get_irq() in atmel_init_port() | expand

Commit Message

Yi Yang Oct. 18, 2023, 9:15 a.m. UTC 
The platform_get_irq() might be failed and return a negative result, there
should be return an error code when platform_get_irq() failed.
Fix it by add check return value of platform_get_irq().

Fixes: 5bb221b0ad65 ("serial: atmel: Use platform_get_irq() to get the interrupt")
Signed-off-by: Yi Yang <yiyang13@huawei.com>
---
 drivers/tty/serial/atmel_serial.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)
diff mbox series

Patch

diff --git a/drivers/tty/serial/atmel_serial.c b/drivers/tty/serial/atmel_serial.c
index 1946fafc3f3e..4984bec88445 100644
--- a/drivers/tty/serial/atmel_serial.c
+++ b/drivers/tty/serial/atmel_serial.c
@@ -2540,13 +2540,17 @@  static int atmel_init_port(struct atmel_uart_port *atmel_port,
 	atmel_init_property(atmel_port, pdev);
 	atmel_set_ops(port);
 
+	ret = platform_get_irq(mpdev, 0);
+	if (ret < 0)
+		return 0;
+
 	port->iotype		= UPIO_MEM;
 	port->flags		= UPF_BOOT_AUTOCONF | UPF_IOREMAP;
 	port->ops		= &atmel_pops;
 	port->fifosize		= 1;
 	port->dev		= &pdev->dev;
 	port->mapbase		= mpdev->resource[0].start;
-	port->irq		= platform_get_irq(mpdev, 0);
+	port->irq		= ret;
 	port->rs485_config	= atmel_config_rs485;
 	port->rs485_supported	= atmel_rs485_supported;
 	port->iso7816_config	= atmel_config_iso7816;