[SERIAL] 8250: limit range of runtime ports

Prevent SERIAL_8250_RUNTIME_UARTS being larger than SERIAL_8250_NR_UARTS.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

diff --git a/drivers/serial/Kconfig b/drivers/serial/Kconfig
index 0d38f0f..42d1de1 100644 (file)
--- a/drivers/serial/Kconfig
+++ b/drivers/serial/Kconfig
@@ -98,6 +98,7 @@ config SERIAL_8250_NR_UARTS
 config SERIAL_8250_RUNTIME_UARTS
        int "Number of 8250/16550 serial ports to register at runtime"
        depends on SERIAL_8250
+       range 0 SERIAL_8250_NR_UARTS
        default "4"
        help
          Set this to the maximum number of serial ports you want