The controller id cannot be negative.
Fixes: 84a9582fd203 ("serial: core: Start managing serial controllers to enable runtime PM")
Reported-by: Andy Shevchenko <andriy.shevchenko@xxxxxxxxxxxxxxx>
Closes: https://lore.kernel.org/linux-serial/ZLd154hdaSG2lnue@xxxxxxxxxxxxxxxxxx/#t
Signed-off-by: Tony Lindgren <tony@xxxxxxxxxxx>
---
include/linux/serial_core.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/include/linux/serial_core.h b/include/linux/serial_core.h
--- a/include/linux/serial_core.h
+++ b/include/linux/serial_core.h
@@ -459,7 +459,7 @@ struct uart_port {
struct serial_rs485 *rs485);
int (*iso7816_config)(struct uart_port *,
struct serial_iso7816 *iso7816);
- int ctrl_id; /* optional serial core controller id */
+ unsigned int ctrl_id; /* optional serial core controller id */
unsigned int irq; /* irq number */
unsigned long irqflags; /* irq flags */
unsigned int uartclk; /* base uart clock */
--
2.41.0
