[PATCH 1/2] [8250 Serial Driver]: Added support for 8250-class UARTs in HV Sistemas H8606 board

[Bryan Wu <cooloney@kernel.org>]

From: Javier Herrero <jherrero@hvsistemas.es>

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>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
---
 drivers/serial/8250.c |    5 +++--
 drivers/serial/8250.h |    5 +++++
 2 files changed, 8 insertions(+), 2 deletions(-)

diff --git a/drivers/serial/8250.c b/drivers/serial/8250.c
index a1ca9b7..1400ea6 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 91bd28f..a10a40c 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
+
-- 
1.5.5