[PATCH v17 12/14] gpio: pisosr: Utilize the for_each_set_clump8 macro

[William Breathitt Gray]

Replace verbose implementation in get_multiple callback with
for_each_set_clump8 macro to simplify code and improve clarity.

Cc: Morten Hein Tiljeset <morten.tilje...@prevas.dk>
Cc: Sean Nyekjaer <sean.nyekj...@prevas.dk>
Signed-off-by: William Breathitt Gray <vilhelm.g...@gmail.com>
---
 drivers/gpio/gpio-pisosr.c | 12 ++++++------
 1 file changed, 6 insertions(+), 6 deletions(-)

diff --git a/drivers/gpio/gpio-pisosr.c b/drivers/gpio/gpio-pisosr.c
index f809a5a8e9eb..9ab2c044ef52 100644
--- a/drivers/gpio/gpio-pisosr.c
+++ b/drivers/gpio/gpio-pisosr.c
@@ -96,16 +96,16 @@ static int pisosr_gpio_get_multiple(struct gpio_chip *chip,
                                    unsigned long *mask, unsigned long *bits)
 {
        struct pisosr_gpio *gpio = gpiochip_get_data(chip);
-       unsigned int nbytes = DIV_ROUND_UP(chip->ngpio, 8);
-       unsigned int i, j;
+       unsigned long offset;
+       unsigned long gpio_mask;
+       unsigned long buffer_state;
 
        pisosr_gpio_refresh(gpio);
 
        bitmap_zero(bits, chip->ngpio);
-       for (i = 0; i < nbytes; i++) {
-               j = i / sizeof(unsigned long);
-               bits[j] |= ((unsigned long) gpio->buffer[i])
-                          << (8 * (i % sizeof(unsigned long)));
+       for_each_set_clump8(offset, gpio_mask, mask, chip->ngpio) {
+               buffer_state = gpio->buffer[offset / 8] & gpio_mask;
+               bitmap_set_value8(bits, buffer_state, offset);
        }
 
        return 0;
-- 
2.23.0