diff options
Diffstat (limited to 'arch/arm/mach-sunxi/pmic_bus.c')
| -rw-r--r-- | arch/arm/mach-sunxi/pmic_bus.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/arch/arm/mach-sunxi/pmic_bus.c b/arch/arm/mach-sunxi/pmic_bus.c index 5d91d7e2c1..dea42de833 100644 --- a/arch/arm/mach-sunxi/pmic_bus.c +++ b/arch/arm/mach-sunxi/pmic_bus.c @@ -101,6 +101,9 @@ int pmic_bus_setbits(u8 reg, u8 bits) if (ret) return ret; + if ((val & bits) == bits) + return 0; + val |= bits; return pmic_bus_write(reg, val); } @@ -114,6 +117,9 @@ int pmic_bus_clrbits(u8 reg, u8 bits) if (ret) return ret; + if (!(val & bits)) + return 0; + val &= ~bits; return pmic_bus_write(reg, val); } |