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| author | Srinivas Kandagatla | 2019-06-12 13:03:43 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman | 2019-07-26 09:14:06 +0200 |
| commit | b01bf44c363dac31128c8a4ac15a740dcb6513cf (patch) | |
| tree | 3b9f68c1255c06ca26d62fde27faa56909beef33 /kernel/ptrace.c | |
| parent | gpio: omap: ensure irq is enabled before wakeup (diff) | |
| download | kernel-qcow2-linux-b01bf44c363dac31128c8a4ac15a740dcb6513cf.tar.gz kernel-qcow2-linux-b01bf44c363dac31128c8a4ac15a740dcb6513cf.tar.xz kernel-qcow2-linux-b01bf44c363dac31128c8a4ac15a740dcb6513cf.zip | |
regmap: fix bulk writes on paged registers
[ Upstream commit db057679de3e9e6a03c1bcd5aee09b0d25fd9f5b ]
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>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'kernel/ptrace.c')
0 files changed, 0 insertions, 0 deletions