From 2d798a3f20ae992b0b69a2b68c04ada397c32ed4 Mon Sep 17 00:00:00 2001
From: Johan Hovold <jhovold@gmail.com>
Date: Tue, 12 Mar 2013 20:21:34 +0100
Subject: ARM: w1-gpio: fix erroneous gpio requests

Fix regression introduced by commit d2323cf773 ("onewire: w1-gpio: add
ext_pullup_enable pin in platform data") which added a gpio entry to the
platform data, but did not add the required initialisers to the board
files using it. Consequently, the driver would request gpio 0 at probe,
which could break other uses of the corresponding pin.

On AT91 requesting gpio 0 changes the pin muxing for PIOA0, which, for
instance, breaks SPI0 on at91sam9g20.

Cc: stable <stable@vger.kernel.org>
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Acked-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 arch/arm/mach-at91/board-foxg20.c    | 1 +
 arch/arm/mach-at91/board-stamp9g20.c | 1 +
 2 files changed, 2 insertions(+)

(limited to 'arch/arm/mach-at91')

diff --git a/arch/arm/mach-at91/board-foxg20.c b/arch/arm/mach-at91/board-foxg20.c
index 2ea7059..c20a870 100644
--- a/arch/arm/mach-at91/board-foxg20.c
+++ b/arch/arm/mach-at91/board-foxg20.c
@@ -176,6 +176,7 @@ static struct w1_gpio_platform_data w1_gpio_pdata = {
 	/* If you choose to use a pin other than PB16 it needs to be 3.3V */
 	.pin		= AT91_PIN_PB16,
 	.is_open_drain  = 1,
+	.ext_pullup_enable_pin	= -EINVAL,
 };
 
 static struct platform_device w1_device = {
diff --git a/arch/arm/mach-at91/board-stamp9g20.c b/arch/arm/mach-at91/board-stamp9g20.c
index a033b8d..869cbec 100644
--- a/arch/arm/mach-at91/board-stamp9g20.c
+++ b/arch/arm/mach-at91/board-stamp9g20.c
@@ -188,6 +188,7 @@ static struct spi_board_info portuxg20_spi_devices[] = {
 static struct w1_gpio_platform_data w1_gpio_pdata = {
 	.pin		= AT91_PIN_PA29,
 	.is_open_drain	= 1,
+	.ext_pullup_enable_pin	= -EINVAL,
 };
 
 static struct platform_device w1_device = {
-- 
cgit v1.1


From de88cbb7b244f3bcd61d49fd6dec35c19192545a Mon Sep 17 00:00:00 2001
From: Catalin Marinas <catalin.marinas@arm.com>
Date: Fri, 18 Jan 2013 15:31:37 +0000
Subject: arm: Move chained_irq_(enter|exit) to a generic file

These functions have been introduced by commit 10a8c383 (irq: introduce
entry and exit functions for chained handlers) in asm/mach/irq.h. This
patch moves them to linux/irqchip/chained_irq.h so that generic irqchip
drivers do not rely on architecture specific header files.

Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Tested-by: Marc Zyngier <marc.zyngier@arm.com>
Cc: Russell King <linux@arm.linux.org.uk>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Rob Herring <rob.herring@calxeda.com>
---
 arch/arm/mach-at91/gpio.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

(limited to 'arch/arm/mach-at91')

diff --git a/arch/arm/mach-at91/gpio.c b/arch/arm/mach-at91/gpio.c
index c5d7e1e..a5afcf7 100644
--- a/arch/arm/mach-at91/gpio.c
+++ b/arch/arm/mach-at91/gpio.c
@@ -22,10 +22,9 @@
 #include <linux/module.h>
 #include <linux/io.h>
 #include <linux/irqdomain.h>
+#include <linux/irqchip/chained_irq.h>
 #include <linux/of_address.h>
 
-#include <asm/mach/irq.h>
-
 #include <mach/hardware.h>
 #include <mach/at91_pio.h>
 
-- 
cgit v1.1