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authorBartosz Golaszewski <bgolaszewski@baylibre.com>2016-09-09 11:17:38 +0200
committerLinus Walleij <linus.walleij@linaro.org>2016-09-12 14:49:42 +0200
commitea3d579d8f0cc5f16105c2741e2d409563beb948 (patch)
tree38ff83c8316ddf6db75326cafeced2532a542bd9 /drivers/gpio
parentgpio: pca953x: remove an unused variable (diff)
downloadlinux-ea3d579d8f0cc5f16105c2741e2d409563beb948.tar.xz
linux-ea3d579d8f0cc5f16105c2741e2d409563beb948.zip
gpio: pca953x: coding style fixes
pca953x_gpio_set_multiple() has some coding style issues that make it harder to read. Tweak the code a bit. Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com> Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Diffstat (limited to 'drivers/gpio')
-rw-r--r--drivers/gpio/gpio-pca953x.c23
1 files changed, 13 insertions, 10 deletions
diff --git a/drivers/gpio/gpio-pca953x.c b/drivers/gpio/gpio-pca953x.c
index e36a9bf08fb1..5d059866d17a 100644
--- a/drivers/gpio/gpio-pca953x.c
+++ b/drivers/gpio/gpio-pca953x.c
@@ -362,25 +362,28 @@ exit:
}
static void pca953x_gpio_set_multiple(struct gpio_chip *gc,
- unsigned long *mask, unsigned long *bits)
+ unsigned long *mask, unsigned long *bits)
{
struct pca953x_chip *chip = gpiochip_get_data(gc);
+ unsigned int bank_mask, bank_val;
+ int bank_shift, bank;
u8 reg_val[MAX_BANK];
int ret;
- int bank_shift = fls((chip->gpio_chip.ngpio - 1) / BANK_SZ);
- int bank;
+
+ bank_shift = fls((chip->gpio_chip.ngpio - 1) / BANK_SZ);
memcpy(reg_val, chip->reg_output, NBANK(chip));
mutex_lock(&chip->i2c_lock);
- for(bank=0; bank<NBANK(chip); bank++) {
- unsigned bankmask = mask[bank / sizeof(*mask)] >>
- ((bank % sizeof(*mask)) * 8);
- if(bankmask) {
- unsigned bankval = bits[bank / sizeof(*bits)] >>
- ((bank % sizeof(*bits)) * 8);
- reg_val[bank] = (reg_val[bank] & ~bankmask) | bankval;
+ for (bank = 0; bank < NBANK(chip); bank++) {
+ bank_mask = mask[bank / sizeof(*mask)] >>
+ ((bank % sizeof(*mask)) * 8);
+ if (bank_mask) {
+ bank_val = bits[bank / sizeof(*bits)] >>
+ ((bank % sizeof(*bits)) * 8);
+ reg_val[bank] = (reg_val[bank] & ~bank_mask) | bank_val;
}
}
+
ret = i2c_smbus_write_i2c_block_data(chip->client,
chip->regs->output << bank_shift,
NBANK(chip), reg_val);