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authorMichael Brunner <mibru@gmx.de>2015-05-11 12:46:49 +0200
committerLinus Walleij <linus.walleij@linaro.org>2015-05-12 13:49:13 +0200
commitf230e8ffc03f17bd9d6b90ea890b8252a8cc1821 (patch)
tree0ed91fda8c78725fa92634a3128f3cf8ba159fd8 /drivers/gpio
parent6d86750ce62391f5a0a7985d5c050c2e3c823ab9 (diff)
downloadop-kernel-dev-f230e8ffc03f17bd9d6b90ea890b8252a8cc1821.zip
op-kernel-dev-f230e8ffc03f17bd9d6b90ea890b8252a8cc1821.tar.gz
gpio: gpio-kempld: Fix get_direction return value
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. Cc: Stable <stable@vger.kernel.org> # v3.12+ 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>
Diffstat (limited to 'drivers/gpio')
-rw-r--r--drivers/gpio/gpio-kempld.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/gpio/gpio-kempld.c b/drivers/gpio/gpio-kempld.c
index 6b8115f..83f281d 100644
--- a/drivers/gpio/gpio-kempld.c
+++ b/drivers/gpio/gpio-kempld.c
@@ -117,7 +117,7 @@ static int kempld_gpio_get_direction(struct gpio_chip *chip, unsigned offset)
= 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)
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