The bank_shift = fls(...) code was duplicated in the driver 5 times, pull it into separate function.
Signed-off-by: Marek Vasut <[email protected]> Cc: Linus Walleij <[email protected]> Cc: Bartosz Golaszewski <[email protected]> Reviewed-by: Kieran Bingham <[email protected]> --- V2: Replace bank_size with bank_shift in commit message V3: No change --- drivers/gpio/gpio-pca953x.c | 18 +++++++++++------- 1 file changed, 11 insertions(+), 7 deletions(-) diff --git a/drivers/gpio/gpio-pca953x.c b/drivers/gpio/gpio-pca953x.c index 540166443c34..afe6de4c48c4 100644 --- a/drivers/gpio/gpio-pca953x.c +++ b/drivers/gpio/gpio-pca953x.c @@ -159,11 +159,16 @@ struct pca953x_chip { int (*read_regs)(struct pca953x_chip *, int, u8 *); }; +static int pca953x_bank_shift(struct pca953x_chip *chip) +{ + return fls((chip->gpio_chip.ngpio - 1) / BANK_SZ); +} + static int pca953x_read_single(struct pca953x_chip *chip, int reg, u32 *val, int off) { int ret; - int bank_shift = fls((chip->gpio_chip.ngpio - 1) / BANK_SZ); + int bank_shift = pca953x_bank_shift(chip); int offset = off / BANK_SZ; ret = i2c_smbus_read_byte_data(chip->client, @@ -182,7 +187,7 @@ static int pca953x_write_single(struct pca953x_chip *chip, int reg, u32 val, int off) { int ret; - int bank_shift = fls((chip->gpio_chip.ngpio - 1) / BANK_SZ); + int bank_shift = pca953x_bank_shift(chip); int offset = off / BANK_SZ; ret = i2c_smbus_write_byte_data(chip->client, @@ -221,7 +226,7 @@ static int pca957x_write_regs_16(struct pca953x_chip *chip, int reg, u8 *val) static int pca953x_write_regs_24(struct pca953x_chip *chip, int reg, u8 *val) { - int bank_shift = fls((chip->gpio_chip.ngpio - 1) / BANK_SZ); + int bank_shift = pca953x_bank_shift(chip); int addr = (reg & PCAL_GPIO_MASK) << bank_shift; int pinctrl = (reg & PCAL_PINCTRL_MASK) << 1; @@ -265,7 +270,7 @@ static int pca953x_read_regs_16(struct pca953x_chip *chip, int reg, u8 *val) static int pca953x_read_regs_24(struct pca953x_chip *chip, int reg, u8 *val) { - int bank_shift = fls((chip->gpio_chip.ngpio - 1) / BANK_SZ); + int bank_shift = pca953x_bank_shift(chip); int addr = (reg & PCAL_GPIO_MASK) << bank_shift; int pinctrl = (reg & PCAL_PINCTRL_MASK) << 1; @@ -402,13 +407,12 @@ static void pca953x_gpio_set_multiple(struct gpio_chip *gc, unsigned long *mask, unsigned long *bits) { struct pca953x_chip *chip = gpiochip_get_data(gc); + int bank_shift = pca953x_bank_shift(chip); unsigned int bank_mask, bank_val; - int bank_shift, bank; + int bank; u8 reg_val[MAX_BANK]; int ret; - bank_shift = fls((chip->gpio_chip.ngpio - 1) / BANK_SZ); - mutex_lock(&chip->i2c_lock); memcpy(reg_val, chip->reg_output, NBANK(chip)); for (bank = 0; bank < NBANK(chip); bank++) { -- 2.18.0
