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@xxxxxxxxxx>
---
drivers/tty/serial/atmel_serial.c | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)
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;
--
2.25.1
