diff options
| author | Lukas Schmid <lukas.schmid@netcube.li> | 2026-02-02 21:15:35 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2026-03-19 16:08:46 +0100 |
| commit | 7c5edf1025ddb68337dcf6dfafb41ec0cf4e21c1 (patch) | |
| tree | 92f299e649ac068e1204765a0f44f74e6037e0ba /block | |
| parent | b8a26d21c7dba086fd3753da168785ba74803e0c (diff) | |
iio: potentiometer: mcp4131: fix double application of wiper shift
commit 85e4614524dca6c0a43874f475a17de2b9725648 upstream.
The MCP4131 wiper address is shifted twice when preparing the SPI
command in mcp4131_write_raw().
The address is already shifted when assigned to the local variable
"address", but is then shifted again when written to data->buf[0].
This results in an incorrect command being sent to the device and
breaks wiper writes to the second channel.
Remove the second shift and use the pre-shifted address directly
when composing the SPI transfer.
Fixes: 22d199a53910 ("iio: potentiometer: add driver for Microchip MCP413X/414X/415X/416X/423X/424X/425X/426X")
Signed-off-by: Lukas Schmid <lukas.schmid@netcube.li>#
Cc: <Stable@vger.kernel.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'block')
0 files changed, 0 insertions, 0 deletions