A-Team_Digital_Solutions/android_kernel_motorola_sm6375
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gpio: gpio-kempld: Fix get_direction return value

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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 <[email protected]> # v3.12+
Reported-by: Jochen Henneberg <[email protected]>
Signed-off-by: Michael Brunner <[email protected]>
Reviewed-by: Guenter Roeck <[email protected]>
Signed-off-by: Linus Walleij <[email protected]>
This commit is contained in:
Michael Brunner 2015-05-11 12:46:49 +02:00 • committed by Linus Walleij
commit f230e8ffc0
1 changed files with 1 additions and 1 deletions
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2
drivers/gpio/gpio-kempld.c
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@ -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)