pinctrl: sh-pfc: Use reg_width instead of reg as sentinel

All other loops over sh_pfc_soc_info.data_regs[] use
pinmux_data_reg.regwidth as the sentinel, which is safer as zero is
never a valid regwidth value (reg could be zero if we start using it to
store an offset).

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

diff --git a/drivers/pinctrl/sh-pfc/gpio.c b/drivers/pinctrl/sh-pfc/gpio.c
index aa2fc77..5d3a35c 100644 (file)
--- a/drivers/pinctrl/sh-pfc/gpio.c
+++ b/drivers/pinctrl/sh-pfc/gpio.c
@@ -84,7 +84,7 @@ static void gpio_setup_data_reg(struct sh_pfc_chip *chip, unsigned idx)
        unsigned int bit;
        unsigned int i;
 
-       for (i = 0, dreg = pfc->info->data_regs; dreg->reg; ++i, ++dreg) {
+       for (i = 0, dreg = pfc->info->data_regs; dreg->reg_width; ++i, ++dreg) {
                for (bit = 0; bit < dreg->reg_width; bit++) {
                        if (dreg->enum_ids[bit] == pin->enum_id) {
                                gpio_pin->dreg = i;