5.4-stable review patch. If anyone has any objections, please let me know.
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From: Fabio Estevam festevam@denx.de
commit 8d8d7c1dbc46aa07a76acab7336a42ddd900be10 upstream.
The IIO core issues warnings when a scan mask is a subset of a previous entry in the available_scan_masks array.
On a board using a MAX11601, the following warning is observed:
max1363 1-0064: available_scan_mask 7 subset of 6. Never used
This occurs because the entries in the max11607_mode_list[] array are not ordered correctly. To fix this, reorder the entries so that no scan mask is a subset of an earlier one.
While at it, reorder the mode_list[] arrays for other supported chips as well, to prevent similar warnings on different variants.
Note fixes tag dropped as these were introduced over many commits a long time back and the side effect until recently was a reduction in sampling rate due to reading too many channels when only a few were desired. Now we have a sanity check that reports this error but that is not where the issue was introduced.
Cc: stable@vger.kernel.org Signed-off-by: Fabio Estevam festevam@denx.de Acked-by: Matti Vaittinen mazziesaccount@gmail.com Link: https://patch.msgid.link/20250516173900.677821-2-festevam@gmail.com Signed-off-by: Jonathan Cameron Jonathan.Cameron@huawei.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/iio/adc/max1363.c | 19 +++++++++---------- 1 file changed, 9 insertions(+), 10 deletions(-)
--- a/drivers/iio/adc/max1363.c +++ b/drivers/iio/adc/max1363.c @@ -526,23 +526,23 @@ static const struct iio_chan_spec max136 /* Applies to max1236, max1237 */ static const enum max1363_modes max1236_mode_list[] = { _s0, _s1, _s2, _s3, - s0to1, s0to2, s0to3, + s0to1, s0to2, s2to3, s0to3, d0m1, d2m3, d1m0, d3m2, d0m1to2m3, d1m0to3m2, - s2to3, };
/* Applies to max1238, max1239 */ static const enum max1363_modes max1238_mode_list[] = { _s0, _s1, _s2, _s3, _s4, _s5, _s6, _s7, _s8, _s9, _s10, _s11, s0to1, s0to2, s0to3, s0to4, s0to5, s0to6, + s6to7, s6to8, s6to9, s6to10, s6to11, s0to7, s0to8, s0to9, s0to10, s0to11, d0m1, d2m3, d4m5, d6m7, d8m9, d10m11, d1m0, d3m2, d5m4, d7m6, d9m8, d11m10, - d0m1to2m3, d0m1to4m5, d0m1to6m7, d0m1to8m9, d0m1to10m11, - d1m0to3m2, d1m0to5m4, d1m0to7m6, d1m0to9m8, d1m0to11m10, - s6to7, s6to8, s6to9, s6to10, s6to11, - d6m7to8m9, d6m7to10m11, d7m6to9m8, d7m6to11m10, + d0m1to2m3, d0m1to4m5, d0m1to6m7, d6m7to8m9, + d0m1to8m9, d6m7to10m11, d0m1to10m11, d1m0to3m2, + d1m0to5m4, d1m0to7m6, d7m6to9m8, d1m0to9m8, + d7m6to11m10, d1m0to11m10, };
#define MAX1363_12X_CHANS(bits) { \ @@ -578,16 +578,15 @@ static const struct iio_chan_spec max123
static const enum max1363_modes max11607_mode_list[] = { _s0, _s1, _s2, _s3, - s0to1, s0to2, s0to3, - s2to3, + s0to1, s0to2, s2to3, + s0to3, d0m1, d2m3, d1m0, d3m2, d0m1to2m3, d1m0to3m2, };
static const enum max1363_modes max11608_mode_list[] = { _s0, _s1, _s2, _s3, _s4, _s5, _s6, _s7, - s0to1, s0to2, s0to3, s0to4, s0to5, s0to6, s0to7, - s6to7, + s0to1, s0to2, s0to3, s0to4, s0to5, s0to6, s6to7, s0to7, d0m1, d2m3, d4m5, d6m7, d1m0, d3m2, d5m4, d7m6, d0m1to2m3, d0m1to4m5, d0m1to6m7,