Commit d525c13e authored by Linus Torvalds's avatar Linus Torvalds

Merge tag 'gpio-v4.4-3' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio

Pull GPIO fixes from Linus Walleij:
 "Some GPIO fixes for the v4.4 series.  Most prominent: I revert the
  error propagation from the .get() function until we can fix up all the
  drivers properly for v4.5.

   - Revert the error number propagation from the .get() vtable entry
     temporarily, until we make the proper fixes to all drivers.
   - Fix the clamping behaviour in the generic GPIO driver.
   - Driver fix for the ath79 driver"

* tag 'gpio-v4.4-3' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio:
  gpio: revert get() to non-errorprogating behaviour
  gpio: generic: clamp values from bgpio_get_set()
  gpio: ath79: Fix the logic to clear offset bit of AR71XX_GPIO_REG_OE register
parents 38beb96e 45ad7db9
...@@ -113,7 +113,7 @@ static int ar934x_gpio_direction_output(struct gpio_chip *chip, unsigned offset, ...@@ -113,7 +113,7 @@ static int ar934x_gpio_direction_output(struct gpio_chip *chip, unsigned offset,
__raw_writel(BIT(offset), ctrl->base + AR71XX_GPIO_REG_CLEAR); __raw_writel(BIT(offset), ctrl->base + AR71XX_GPIO_REG_CLEAR);
__raw_writel( __raw_writel(
__raw_readl(ctrl->base + AR71XX_GPIO_REG_OE) & BIT(offset), __raw_readl(ctrl->base + AR71XX_GPIO_REG_OE) & ~BIT(offset),
ctrl->base + AR71XX_GPIO_REG_OE); ctrl->base + AR71XX_GPIO_REG_OE);
spin_unlock_irqrestore(&ctrl->lock, flags); spin_unlock_irqrestore(&ctrl->lock, flags);
......
...@@ -141,9 +141,9 @@ static int bgpio_get_set(struct gpio_chip *gc, unsigned int gpio) ...@@ -141,9 +141,9 @@ static int bgpio_get_set(struct gpio_chip *gc, unsigned int gpio)
unsigned long pinmask = bgc->pin2mask(bgc, gpio); unsigned long pinmask = bgc->pin2mask(bgc, gpio);
if (bgc->dir & pinmask) if (bgc->dir & pinmask)
return bgc->read_reg(bgc->reg_set) & pinmask; return !!(bgc->read_reg(bgc->reg_set) & pinmask);
else else
return bgc->read_reg(bgc->reg_dat) & pinmask; return !!(bgc->read_reg(bgc->reg_dat) & pinmask);
} }
static int bgpio_get(struct gpio_chip *gc, unsigned int gpio) static int bgpio_get(struct gpio_chip *gc, unsigned int gpio)
......
...@@ -1279,7 +1279,13 @@ static int _gpiod_get_raw_value(const struct gpio_desc *desc) ...@@ -1279,7 +1279,13 @@ static int _gpiod_get_raw_value(const struct gpio_desc *desc)
chip = desc->chip; chip = desc->chip;
offset = gpio_chip_hwgpio(desc); offset = gpio_chip_hwgpio(desc);
value = chip->get ? chip->get(chip, offset) : -EIO; value = chip->get ? chip->get(chip, offset) : -EIO;
value = value < 0 ? value : !!value; /*
* FIXME: fix all drivers to clamp to [0,1] or return negative,
* then change this to:
* value = value < 0 ? value : !!value;
* so we can properly propagate error codes.
*/
value = !!value;
trace_gpio_value(desc_to_gpio(desc), 1, value); trace_gpio_value(desc_to_gpio(desc), 1, value);
return value; return value;
} }
......
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