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| author | Katie Dunne <kdunne@mail.ccsf.edu> | 2017-09-18 15:52:40 -0700 |
|---|---|---|
| committer | Jonathan Cameron <Jonathan.Cameron@huawei.com> | 2017-09-24 15:52:03 +0100 |
| commit | ba272e3bbeaee3b34ca6c616f7ad8d3c65f33f79 (patch) | |
| tree | 9f31fd175d3f9fbd16310c7b520feebada0f72b2 /init | |
| parent | 08969366afd99622bb315112179933f7ded4b066 (diff) | |
| download | linux-ba272e3bbeaee3b34ca6c616f7ad8d3c65f33f79.tar.bz2 | |
Staging: iio: meter: ade7759: update locking method for write frequency
iio_dev->mlock is to be used only by the IIO core for protecting
device mode changes between INDIO_DIRECT and INDIO_BUFFER.
This patch replaces the use of mlock with the already established
buf_lock mutex.
Introducing an 'unlocked' spi_write_reg_16 function to be used by
ade7759_write_frequency avoids nested locks and maintains atomicity
between bus and device frequency changes.
Based on the solution found in ade7754 patch here:
https://marc.info/?l=linux-iio&m=149086659008991&w=2
Signed-off-by: Katie Dunne <kdunne@mail.ccsf.edu>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Diffstat (limited to 'init')
0 files changed, 0 insertions, 0 deletions