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-rw-r--r--drivers/tty/serial/8250/8250_platform.c13
1 files changed, 7 insertions, 6 deletions
diff --git a/drivers/tty/serial/8250/8250_platform.c b/drivers/tty/serial/8250/8250_platform.c
index ded985182e04..5817c1d72314 100644
--- a/drivers/tty/serial/8250/8250_platform.c
+++ b/drivers/tty/serial/8250/8250_platform.c
@@ -9,6 +9,7 @@
#include <linux/array_size.h>
#include <linux/module.h>
#include <linux/moduleparam.h>
+#include <linux/once.h>
#include <linux/platform_device.h>
#include <linux/serial_8250.h>
@@ -53,15 +54,10 @@ void serial8250_set_isa_configurator(serial8250_isa_config_fn v)
}
EXPORT_SYMBOL(serial8250_set_isa_configurator);
-void __init serial8250_isa_init_ports(void)
+static void __init __serial8250_isa_init_ports(void)
{
- static int first = 1;
int i, irqflag = 0;
- if (!first)
- return;
- first = 0;
-
if (nr_uarts > UART_NR)
nr_uarts = UART_NR;
@@ -102,6 +98,11 @@ void __init serial8250_isa_init_ports(void)
}
}
+void __init serial8250_isa_init_ports(void)
+{
+ DO_ONCE(__serial8250_isa_init_ports);
+}
+
/*
* Register a set of serial devices attached to a platform device. The
* list is terminated with a zero flags entry, which means we expect