iv/linux
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

gpio: mmio: replace open-coded for_each_set_bit()

Browse Source 
Use for_each_set_bit() instead of open-coding it to simplify the code.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://lore.kernel.org/r/20200713154429.23662-1-andriy.shevchenko@linux.intel.com
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
This commit is contained in:
Andy Shevchenko 2020-07-13 18:44:29 +03:00 committed by Linus Walleij
parent 4dc5794cf2
commit 761b5c30c2
1 changed files with 7 additions and 13 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

20
drivers/gpio/gpio-mmio.c
View File

@ -195,8 +195,7 @@ static int bgpio_get_multiple_be(struct gpio_chip *gc, unsigned long *mask,
*bits &= ~*mask;
/* Create a mirrored mask */
bit = -1;
while ((bit = find_next_bit(mask, gc->ngpio, bit + 1)) < gc->ngpio)
for_each_set_bit(bit, mask, gc->ngpio)
readmask |= bgpio_line2mask(gc, bit);
/* Read the register */
@ -206,8 +205,7 @@ static int bgpio_get_multiple_be(struct gpio_chip *gc, unsigned long *mask,
* Mirror the result into the "bits" result, this will give line 0
* in bit 0 ... line 31 in bit 31 for a 32bit register.
*/
bit = -1;
while ((bit = find_next_bit(&val, gc->ngpio, bit + 1)) < gc->ngpio)
for_each_set_bit(bit, &val, gc->ngpio)
*bits |= bgpio_line2mask(gc, bit);
return 0;
@ -272,15 +270,11 @@ static void bgpio_multiple_get_masks(struct gpio_chip *gc,
*set_mask = 0;
*clear_mask = 0;
for (i = 0; i < gc->bgpio_bits; i++) {
if (*mask == 0)
break;
if (__test_and_clear_bit(i, mask)) {
if (test_bit(i, bits))
*set_mask |= bgpio_line2mask(gc, i);
else
*clear_mask |= bgpio_line2mask(gc, i);
}
for_each_set_bit(i, mask, gc->bgpio_bits) {
if (test_bit(i, bits))
*set_mask |= bgpio_line2mask(gc, i);
else
*clear_mask |= bgpio_line2mask(gc, i);
}
}