[PATCH v2 0/2] iio: proximity: sx9310/sx9360: reject out-of-range hardware gain values

[Arnav Kapoor <kapoorarnav43@gmail.com>]

sx9310_write_gain() and sx9360_write_gain() squeeze ilog2() of any
integer into the register field. Values that don't fit wrap around,
and 0 and negative values turn into the maximum code, while the write
reports success. Reject those. One patch per driver, as the Fixes tags
differ.

Changes in v2:
- Keep rounding values between the supported gains down, instead of
  rejecting them, so the ABI doesn't change (Jonathan)
- Only reject values <= 0 and values that don't fit: FIELD_FIT() for
  sx9310 (Jonathan); sx9360 checks against the gain of 8 code, as its
  3-bit field also holds codes 4 to 7, which the driver doesn't support

v1: https://lore.kernel.org/all/20261107111710.442318-1-kapoorarnav43@gmail.com/

Compile-tested only (W=1); I don't have SX9310 or SX9360 hardware.

Arnav Kapoor (2):
  iio: proximity: sx9310: reject out-of-range hardware gain values
  iio: proximity: sx9360: reject out-of-range hardware gain values

 drivers/iio/proximity/sx9310.c | 7 +++++++
 drivers/iio/proximity/sx9360.c | 7 +++++++
 2 files changed, 14 insertions(+)


base-commit: 340d44bdf9db0f095f99845b5ad8628781d79b6f
-- 
2.53.0