serial: 8250: Switch to irq_get_nr_irqs()

Use the irq_get_nr_irqs() function instead of the global variable
'nr_irqs'. Prepare for changing 'nr_irqs' from an exported global
variable into a variable with file scope.

Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Link: https://lore.kernel.org/all/20241015190953.1266194-14-bvanassche@acm.org

diff --git a/drivers/tty/serial/8250/8250_port.c b/drivers/tty/serial/8250/8250_port.c
index 3509af7dc52b8816f2f5ab58f0d999696f7483e7..0b886c0924daee9a9685ef579ae4f8be7d6a359c 100644 (file)
--- a/drivers/tty/serial/8250/8250_port.c
+++ b/drivers/tty/serial/8250/8250_port.c
@@ -3176,7 +3176,7 @@ static void serial8250_config_port(struct uart_port *port, int flags)
 static int
 serial8250_verify_port(struct uart_port *port, struct serial_struct *ser)
 {
-       if (ser->irq >= nr_irqs || ser->irq < 0 ||
+       if (ser->irq >= irq_get_nr_irqs() || ser->irq < 0 ||
            ser->baud_base < 9600 || ser->type < PORT_UNKNOWN ||
            ser->type >= ARRAY_SIZE(uart_config) || ser->type == PORT_CIRRUS ||
            ser->type == PORT_STARTECH)