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| /openbmc/linux/drivers/base/regmap/ |
| H A D | regmap.c | diff db057679de3e9e6a03c1bcd5aee09b0d25fd9f5b Wed Jun 12 06:03:43 CDT 2019 Srinivas Kandagatla <srinivas.kandagatla@linaro.org> regmap: fix bulk writes on paged registers
On buses like SlimBus and SoundWire which does not support
gather_writes yet in regmap, A bulk write on paged register
would be silently ignored after programming page.
This is because local variable 'ret' value in regmap_raw_write_impl()
gets reset to 0 once page register is written successfully and the
code below checks for 'ret' value to be -ENOTSUPP before linearising
the write buffer to send to bus->write().
Fix this by resetting the 'ret' value to -ENOTSUPP in cases where
gather_writes() is not supported or single register write is
not possible.
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Signed-off-by: Mark Brown <broonie@kernel.org>
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