diff options
Diffstat (limited to 'drivers/gpio/gpio-pca953x.c')
| -rw-r--r-- | drivers/gpio/gpio-pca953x.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/gpio/gpio-pca953x.c b/drivers/gpio/gpio-pca953x.c index 02f2a5621..47d08b9da 100644 --- a/drivers/gpio/gpio-pca953x.c +++ b/drivers/gpio/gpio-pca953x.c @@ -372,14 +372,15 @@ static void pca953x_gpio_set_multiple(struct gpio_chip *gc, break; } - memcpy(reg_val, chip->reg_output, NBANK(chip)); mutex_lock(&chip->i2c_lock); + memcpy(reg_val, chip->reg_output, NBANK(chip)); 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); + bankval &= bankmask; reg_val[bank] = (reg_val[bank] & ~bankmask) | bankval; } } |