Kernel/linux
1
0
Fork 0
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git synced 2025-01-09 23:00:21 +00:00
Code Issues Actions Packages Projects Releases Wiki Activity

mfd: Set da903x bits if new value is different from the old one

Browse Source 
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>
This commit is contained in:
Axel Lin 2011-10-31 14:23:03 +08:00 committed by Samuel Ortiz
parent 890c98e374
commit af65e6cef4
1 changed files with 1 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
drivers/mfd/da903x.c
View File

@ -182,7 +182,7 @@ int da903x_set_bits(struct device *dev, int reg, uint8_t bit_mask)
if (ret) if (ret)
goto out; goto out;
if ((reg_val & bit_mask) == 0) { if ((reg_val & bit_mask) != bit_mask) {
reg_val |= bit_mask; reg_val |= bit_mask;
ret = __da903x_write(chip->client, reg, reg_val); ret = __da903x_write(chip->client, reg, reg_val);
} }