8250 Serial Driver: Added support for 8250-class UARTs in HV Sistemas H8606 board

Added support for 8250-class UARTs in HV Sistemas H8606 board,
modification in 8250.c driver for correct compilation with Blackfin

Besides, I think that there is more people using 8250-class UARTs
with a different hardware than the H8606 board. This code can be shared
by them.

Signed-off-by: Javier Herrero <jherrero@hvsistemas.es>
Acked-by: Alan Cox <alan@lxorguk.ukuu.org.uk>
Signed-off-by: Bryan Wu <cooloney@kernel.org>

2 files changed, 8 insertions, 2 deletions

diff --git a/drivers/serial/8250.c b/drivers/serial/8250.c
index a1ca9b7bf2d..1400ea6a249 100644
--- a/drivers/serial/8250.c
+++ b/drivers/serial/8250.c
@@ -43,6 +43,7 @@
 
 #include <asm/io.h>
 #include <asm/irq.h>
+#include <asm/serial.h>
 
 #include "8250.h"
 
@@ -92,8 +93,6 @@ static unsigned int nr_uarts = CONFIG_SERIAL_8250_RUNTIME_UARTS;
  */
 #define CONFIG_HUB6 1
 
-#include <asm/serial.h>
-
 /*
  * SERIAL_PORT_DFNS tells us about built-in ports that have no
  * standard enumeration mechanism.   Platforms that can find all
@@ -1548,6 +1547,8 @@ static int serial_link_irq_chain(struct uart_8250_port *up)
                 i->head = &up->list;
                 spin_unlock_irq(&i->lock);
 
+                irq_flags |= SERIAL_EXTRA_IRQ_FLAGS;
+
                 ret = request_irq(up->port.irq, serial8250_interrupt,
                                   irq_flags, "serial", i);
                 if (ret < 0)
diff --git a/drivers/serial/8250.h b/drivers/serial/8250.h
index 91bd28f2bb4..a10a40cc0d9 100644
--- a/drivers/serial/8250.h
+++ b/drivers/serial/8250.h
@@ -78,3 +78,8 @@ struct serial8250_config {
 #else
 #define ALPHA_KLUDGE_MCR 0
 #endif
+
+#ifndef SERIAL_EXTRA_IRQ_FLAGS
+#define SERIAL_EXTRA_IRQ_FLAGS 0
+#endif
+