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authorAxel Lin <axel.lin@gmail.com>2011-10-31 14:24:30 +0800
committerSamuel Ortiz <sameo@linux.intel.com>2011-12-20 18:50:56 +0100
commit26bc4e0cc5426e86398d6780d160f02c0a347087 (patch)
tree2638b675c3ced86956713775b70c3c83d4d13491 /drivers/mfd/tps6586x.c
parentaf65e6cef488be0bd15932c8ce9801a47a183051 (diff)
downloadlinux-26bc4e0cc5426e86398d6780d160f02c0a347087.tar.gz
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.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/mfd/tps6586x.c b/drivers/mfd/tps6586x.c
index bba26d96c24..a5ddf31b60c 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);
}