[00/10] iio: adis: cleanups and fixes

Message

Alexandru Ardelean Nov. 1, 2019, 9:34 a.m. UTC

This patch-set addresses some issues, where [when making the functions
inline], the GCC [especially for x86_64] compilers start to report
`-Wmaybe-unitialized` warnings/errors.

The warnings are valid from a general stand-point, but are also
false-positives, as the ADIS read functions return 0 or negative values. So
for most cases `ret < 0` is fine [as is done in many drivers].

To appease the compiler, this changeset converts
 `if (ret < 0)` -> `if (ret)` [which is also a valid check]

There are also 2 checkpatch complaints addressed.

And lastly, 3 minor fixes. In some cases, the value of the ADIS read
function should be checked for 0 (success) and only then assign the read
buffer/value. These also contain Fixes tags.

Alexandru Ardelean (10):
  iio: gyro: adis16136: check ret val for non-zero vs less-than-zero
  iio: imu: adis16400: check ret val for non-zero vs less-than-zero
  iio: imu: adis16460: check ret val for non-zero vs less-than-zero
  iio: imu: adis16480: check ret val for non-zero vs less-than-zero
  iio: imu: adis: check ret val for non-zero vs less-than-zero
  iio: imu: adis16480: fix indentation of return statement
  iio: imu: adis16480: prefer `unsigned int` over `unsigned`
  iio: imu: adis16480: assign bias value only if operation succeeded
  iio: imu: adis: assign read val in debugfs hook only if op successful
  iio: imu: adis: assign value only if return code zero in read funcs

 drivers/iio/gyro/adis16136.c | 24 +++++++++++------------
 drivers/iio/imu/adis.c       |  5 +++--
 drivers/iio/imu/adis16400.c  | 22 ++++++++++-----------
 drivers/iio/imu/adis16460.c  |  8 ++++----
 drivers/iio/imu/adis16480.c  | 38 +++++++++++++++++++-----------------
 include/linux/iio/imu/adis.h |  6 ++++--
 6 files changed, 54 insertions(+), 49 deletions(-)