Messages in this thread Patch in this message | | | From | William Breathitt Gray <> | Subject | [PATCH v18 12/14] gpio: pisosr: Utilize the for_each_set_clump8 macro | Date | Wed, 9 Oct 2019 13:14:48 -0400 |
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Replace verbose implementation in get_multiple callback with for_each_set_clump8 macro to simplify code and improve clarity.
Cc: Morten Hein Tiljeset <morten.tiljeset@prevas.dk> Cc: Sean Nyekjaer <sean.nyekjaer@prevas.dk> Signed-off-by: William Breathitt Gray <vilhelm.gray@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
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