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| author | Axel Lin <axel.lin@gmail.com> | 2011-10-31 14:23:03 +0800 |
|---|---|---|
| committer | Samuel Ortiz <sameo@linux.intel.com> | 2011-12-20 18:50:56 +0100 |
| commit | af65e6cef488be0bd15932c8ce9801a47a183051 (patch) | |
| tree | 2d499cce07dc1d618ed273df3b368e332a3e3e45 | |
| parent | 890c98e3746fa8705cc9c70979e64360cf2d8a31 (diff) | |
| download | linux-af65e6cef488be0bd15932c8ce9801a47a183051.tar.bz2 | |
mfd: Set da903x 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>
| -rw-r--r-- | drivers/mfd/da903x.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/mfd/da903x.c b/drivers/mfd/da903x.c index 62ce685a79cb..1924b857a0fb 100644 --- a/drivers/mfd/da903x.c +++ b/drivers/mfd/da903x.c @@ -182,7 +182,7 @@ int da903x_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 = __da903x_write(chip->client, reg, reg_val); } |