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| author | Axel Lin <axel.lin@gmail.com> | 2011-10-31 14:24:30 +0800 |
|---|---|---|
| committer | Samuel Ortiz <sameo@linux.intel.com> | 2011-12-20 18:50:56 +0100 |
| commit | 26bc4e0cc5426e86398d6780d160f02c0a347087 (patch) | |
| tree | 2638b675c3ced86956713775b70c3c83d4d13491 /drivers/mfd/tps6586x.c | |
| parent | af65e6cef488be0bd15932c8ce9801a47a183051 (diff) | |
| download | lwn-26bc4e0cc5426e86398d6780d160f02c0a347087.tar.gz lwn-26bc4e0cc5426e86398d6780d160f02c0a347087.zip | |
mfd: Set tps6586x bits if new value is different from the old one
It does not make sense to write new value only when all the bit_mask
bits are zero.
We need to write new value if the bit mask fields of new value is
not equal to old value.
Signed-off-by: Axel Lin <axel.lin@gmail.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
Diffstat (limited to 'drivers/mfd/tps6586x.c')
| -rw-r--r-- | drivers/mfd/tps6586x.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/mfd/tps6586x.c b/drivers/mfd/tps6586x.c index bba26d96c240..a5ddf31b60ca 100644 --- a/drivers/mfd/tps6586x.c +++ b/drivers/mfd/tps6586x.c @@ -197,7 +197,7 @@ int tps6586x_set_bits(struct device *dev, int reg, uint8_t bit_mask) if (ret) goto out; - if ((reg_val & bit_mask) == 0) { + if ((reg_val & bit_mask) != bit_mask) { reg_val |= bit_mask; ret = __tps6586x_write(to_i2c_client(dev), reg, reg_val); } |