The platform_get_irq might be failed and return a negative result. So
there should have an error handling code.
Fixed this by adding an error handling code.
Fixes: c4b058560762 ("serial:st-asc: Add ST ASC driver.")
Signed-off-by: Zhang Shurong <zhang_shurong@xxxxxxxxxxx>
---
v1->v2: generated patch based on tty-next tree.
drivers/tty/serial/st-asc.c | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/drivers/tty/serial/st-asc.c b/drivers/tty/serial/st-asc.c
index e7048515a79c..3d60ab6e9581 100644
--- a/drivers/tty/serial/st-asc.c
+++ b/drivers/tty/serial/st-asc.c
@@ -723,9 +723,13 @@ static int asc_init_port(struct asc_port *ascport,
port->ops = &asc_uart_ops;
port->fifosize = ASC_FIFO_SIZE;
port->dev = &pdev->dev;
- port->irq = platform_get_irq(pdev, 0);
port->has_sysrq = IS_ENABLED(CONFIG_SERIAL_ST_ASC_CONSOLE);
+ ret = platform_get_irq(pdev, 0);
+ if (ret < 0)
+ return ret;
+ port->irq = ret;
+
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
port->membase = devm_ioremap_resource(&pdev->dev, res);
if (IS_ERR(port->membase))
--
2.30.2
