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fbdev: via-gpio: Be sure to clamp return value

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As we want gpio_chip .get() calls to be able to return negative
error codes and propagate to drivers, we need to go over all
drivers and make sure their return values are clamped to [0,1].
We do this by using the ret = !!(val) design pattern.

Cc: Florian Tobias Schandinat <[email protected]>
Acked-by: Tomi Valkeinen <[email protected]>
Signed-off-by: Linus Walleij <[email protected]>
This commit is contained in:
Linus Walleij 2015-12-21 23:03:02 +01:00
commit 13e676be08
1 changed files with 1 additions and 1 deletions
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drivers/video/fbdev/via/via-gpio.c
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@ -142,7 +142,7 @@ static int via_gpio_get(struct gpio_chip *chip, unsigned int nr)
gpio = cfg->active_gpios[nr];
reg = via_read_reg(VIASR, gpio->vg_port_index);
spin_unlock_irqrestore(&cfg->vdev->reg_lock, flags);
return reg & (0x04 << gpio->vg_mask_shift);
return !!(reg & (0x04 << gpio->vg_mask_shift));
}