https://github.com/torvalds/linux
Revision 815806e39bf6f7e7b34875d4a9609dbe76661782 authored by Elaine Zhang on 18 August 2016, 09:01:55 UTC, committed by Mark Brown on 18 August 2016, 10:09:12 UTC
regmap_write ->_regmap_raw_write -->regcache_write first and than use map->bus->write to wirte i2c or spi But if the i2c or spi transfer failed, But the cache is updated, So if I use regmap_read will get the cache data which is not the real register value. Signed-off-by: Elaine Zhang <zhangqing@rock-chips.com> Signed-off-by: Mark Brown <broonie@kernel.org>
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Tip revision: 815806e39bf6f7e7b34875d4a9609dbe76661782 authored by Elaine Zhang on 18 August 2016, 09:01:55 UTC
regmap: drop cache if the bus transfer error
regmap: drop cache if the bus transfer error
Tip revision: 815806e
| File | Mode | Size |
|---|---|---|
| Documentation | ||
| arch | ||
| block | ||
| certs | ||
| crypto | ||
| drivers | ||
| firmware | ||
| fs | ||
| include | ||
| init | ||
| ipc | ||
| kernel | ||
| lib | ||
| mm | ||
| net | ||
| samples | ||
| scripts | ||
| security | ||
| sound | ||
| tools | ||
| usr | ||
| virt | ||
| .get_maintainer.ignore | -rw-r--r-- | 31 bytes |
| .gitignore | -rw-r--r-- | 1.2 KB |
| .mailmap | -rw-r--r-- | 6.4 KB |
| COPYING | -rw-r--r-- | 18.3 KB |
| CREDITS | -rw-r--r-- | 95.5 KB |
| Kbuild | -rw-r--r-- | 2.8 KB |
| Kconfig | -rw-r--r-- | 252 bytes |
| MAINTAINERS | -rw-r--r-- | 353.9 KB |
| Makefile | -rw-r--r-- | 56.0 KB |
| README | -rw-r--r-- | 18.1 KB |
| REPORTING-BUGS | -rw-r--r-- | 7.3 KB |
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