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Diffstat (limited to 'target/linux/rb532/patches-2.6.23/220-serial_fix.patch')
-rw-r--r--target/linux/rb532/patches-2.6.23/220-serial_fix.patch18
1 files changed, 18 insertions, 0 deletions
diff --git a/target/linux/rb532/patches-2.6.23/220-serial_fix.patch b/target/linux/rb532/patches-2.6.23/220-serial_fix.patch
new file mode 100644
index 0000000000..4af6620fb5
--- /dev/null
+++ b/target/linux/rb532/patches-2.6.23/220-serial_fix.patch
@@ -0,0 +1,18 @@
+Index: linux-2.6.23.17/drivers/serial/8250.c
+===================================================================
+--- linux-2.6.23.17.orig/drivers/serial/8250.c
++++ linux-2.6.23.17/drivers/serial/8250.c
+@@ -433,6 +433,13 @@ serial_out(struct uart_8250_port *up, in
+ default:
+ outb(value, up->port.iobase + offset);
+ }
++
++#if defined(CONFIG_IDT_EB434) || defined(CONFIG_MIKROTIK_RB500)
++ __SLOW_DOWN_IO;
++ __SLOW_DOWN_IO;
++ __SLOW_DOWN_IO;
++ __SLOW_DOWN_IO;
++#endif
+ }
+
+ static void