gpio: tpic2810: Make sure cached buffer has consistent status with h/w status

	return 0;

}

static void tpic2810_set(struct gpio_chip *chip, unsigned offset, int value)

static void tpic2810_set_mask_bits(struct gpio_chip *chip, u8 mask, u8 bits)

{

	struct tpic2810 *gpio = gpiochip_get_data(chip);

	u8 buffer;

	int err;

	mutex_lock(&gpio->lock);

	if (value)

		gpio->buffer |= BIT(offset);

	else

		gpio->buffer &= ~BIT(offset);

	buffer = gpio->buffer & ~mask;

	buffer |= (mask & bits);

	i2c_smbus_write_byte_data(gpio->client, TPIC2810_WS_COMMAND,

				  gpio->buffer);

	err = i2c_smbus_write_byte_data(gpio->client, TPIC2810_WS_COMMAND,

					buffer);

	if (!err)

		gpio->buffer = buffer;

	mutex_unlock(&gpio->lock);

}

static void tpic2810_set(struct gpio_chip *chip, unsigned offset, int value)

{

	tpic2810_set_mask_bits(chip, BIT(offset), value ? BIT(offset) : 0);

}

static void tpic2810_set_multiple(struct gpio_chip *chip, unsigned long *mask,

				  unsigned long *bits)

{

	struct tpic2810 *gpio = gpiochip_get_data(chip);

	mutex_lock(&gpio->lock);

	/* clear bits under mask */

	gpio->buffer &= ~(*mask);

	/* set bits under mask */

	gpio->buffer |= ((*mask) & (*bits));

	i2c_smbus_write_byte_data(gpio->client, TPIC2810_WS_COMMAND,

				  gpio->buffer);

	mutex_unlock(&gpio->lock);

	tpic2810_set_mask_bits(chip, *mask, *bits);

}

static struct gpio_chip template_chip = {