[4.2.y-ckt stable] Patch "pinctrl: bcm2835: Fix initial value for direction_output" has been added to the 4.2.y-ckt tree

[Kamal Mostafa]

This is a note to let you know that I have just added a patch titled

    pinctrl: bcm2835: Fix initial value for direction_output

to the linux-4.2.y-queue branch of the 4.2.y-ckt extended stable tree 
which can be found at:

    http://kernel.ubuntu.com/git/ubuntu/linux.git/log/?h=linux-4.2.y-queue

This patch is scheduled to be released in version 4.2.8-ckt2.

If you, or anyone else, feels it should not be added to this tree, please 
reply to this email.

For more information about the 4.2.y-ckt tree, see
https://wiki.ubuntu.com/Kernel/Dev/ExtendedStable

Thanks.
-Kamal

---8<------------------------------------------------------------

>From 892f5a1285aa41c628e6dbe5075c9b866e913ce4 Mon Sep 17 00:00:00 2001
From: Stefan Wahren <stefan.wahren at i2se.com>
Date: Thu, 19 Nov 2015 00:32:27 +0000
Subject: pinctrl: bcm2835: Fix initial value for direction_output

commit 4c02cba18cc9de672a554ddda4f23dec8cb4b48e upstream.

Currently the provided initial value for bcm2835_gpio_direction_output
has no effect. So fix this issue by changing the value before
changing the GPIO direction. As a result we need to move the function below
bcm2835_gpio_set.

Suggested-by: Martin Sperl <kernel at martin.sperl.org>
Signed-off-by: Stefan Wahren <stefan.wahren at i2se.com>
Acked-by: Eric Anholt <eric at anholt.net>
Acked-by: Stephen Warren <swarren at wwwdotorg.org>
Fixes: e1b2dc70cd5b ("pinctrl: add bcm2835 driver")
Signed-off-by: Linus Walleij <linus.walleij at linaro.org>
Signed-off-by: Kamal Mostafa <kamal at canonical.com>
---
 drivers/pinctrl/bcm/pinctrl-bcm2835.c | 13 +++++++------
 1 file changed, 7 insertions(+), 6 deletions(-)

diff --git a/drivers/pinctrl/bcm/pinctrl-bcm2835.c b/drivers/pinctrl/bcm/pinctrl-bcm2835.c
index 6177315..7a2d53c 100644
--- a/drivers/pinctrl/bcm/pinctrl-bcm2835.c
+++ b/drivers/pinctrl/bcm/pinctrl-bcm2835.c
@@ -352,12 +352,6 @@ static int bcm2835_gpio_get(struct gpio_chip *chip, unsigned offset)
 	return bcm2835_gpio_get_bit(pc, GPLEV0, offset);
 }

-static int bcm2835_gpio_direction_output(struct gpio_chip *chip,
-		unsigned offset, int value)
-{
-	return pinctrl_gpio_direction_output(chip->base + offset);
-}
-
 static void bcm2835_gpio_set(struct gpio_chip *chip, unsigned offset, int value)
 {
 	struct bcm2835_pinctrl *pc = dev_get_drvdata(chip->dev);
@@ -365,6 +359,13 @@ static void bcm2835_gpio_set(struct gpio_chip *chip, unsigned offset, int value)
 	bcm2835_gpio_set_bit(pc, value ? GPSET0 : GPCLR0, offset);
 }

+static int bcm2835_gpio_direction_output(struct gpio_chip *chip,
+		unsigned offset, int value)
+{
+	bcm2835_gpio_set(chip, offset, value);
+	return pinctrl_gpio_direction_output(chip->base + offset);
+}
+
 static int bcm2835_gpio_to_irq(struct gpio_chip *chip, unsigned offset)
 {
 	struct bcm2835_pinctrl *pc = dev_get_drvdata(chip->dev);
--
1.9.1