Patch "gpio: gpio-kempld: Fix get_direction return value" has been added to the 4.0-stable tree

Patch "gpio: gpio-kempld: Fix get_direction return value" has been added to the 4.0-stable tree

[gregkh]

This is a note to let you know that I've just added the patch titled

    gpio: gpio-kempld: Fix get_direction return value

to the 4.0-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     gpio-gpio-kempld-fix-get_direction-return-value.patch
and it can be found in the queue-4.0 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@vger.kernel.org> know about it.


>From f230e8ffc03f17bd9d6b90ea890b8252a8cc1821 Mon Sep 17 00:00:00 2001
From: Michael Brunner <mibru@gmx.de>
Date: Mon, 11 May 2015 12:46:49 +0200
Subject: gpio: gpio-kempld: Fix get_direction return value

From: Michael Brunner <mibru@gmx.de>

commit f230e8ffc03f17bd9d6b90ea890b8252a8cc1821 upstream.

This patch fixes an inverted return value of the gpio get_direction
function.

The wrong value causes the direction sysfs entry and GPIO debugfs file
to indicate incorrect GPIO direction settings. In some cases it also
prevents setting GPIO output values.

The problem is also present in all other stable kernel versions since
linux-3.12.

Reported-by: Jochen Henneberg <jh@henneberg-systemdesign.com>
Signed-off-by: Michael Brunner <michael.brunner@kontron.com>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 drivers/gpio/gpio-kempld.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/gpio/gpio-kempld.c
+++ b/drivers/gpio/gpio-kempld.c
@@ -117,7 +117,7 @@ static int kempld_gpio_get_direction(str
 		= container_of(chip, struct kempld_gpio_data, chip);
 	struct kempld_device_data *pld = gpio->pld;
 
-	return kempld_gpio_get_bit(pld, KEMPLD_GPIO_DIR_NUM(offset), offset);
+	return !kempld_gpio_get_bit(pld, KEMPLD_GPIO_DIR_NUM(offset), offset);
 }
 
 static int kempld_gpio_pincount(struct kempld_device_data *pld)


Patches currently in stable-queue which might be from mibru@gmx.de are

queue-4.0/gpio-gpio-kempld-fix-get_direction-return-value.patch