Dear all, On 22/8/20 17:08, Guenter Roeck wrote: > The EC reports a variety of error codes. Most of those, with the exception > of EC_RES_INVALID_VERSION, are converted to -EPROTO. As result, the actual > error code gets lost. In cros_ec_cmd_xfer_status(), convert all EC errors > to Linux error codes to report a more meaningful error to the caller to aid > debugging. > > To prepare for this change, handle error codes other than -EPROTO for all > callers of cros_ec_cmd_xfer_status(). Specifically, no longer assume that > -EPROTO reflects an error from the EC and all other error codes reflect a > transfer error. > > v2: Add patches 1/4 to 3/4 to handle callers of cros_ec_cmd_xfer_status() > v3: Add patches 4/6 and 5/6 to handle additional callers of > cros_ec_cmd_xfer_status() > Use -ENOPROTOOPT for EC_RES_INVALID_VERSION > Implement function to convert error codes > v4: Add coments describing the functionality of cros_ec_num_pwms(). > Add patch 7/7 to clean up cros_ec_num_pwms() after the new error code > support has been implemented. > Rebased series to v5.8. > v5: If there is no error, cros_ec_cmd_xfer_status() needs to return the > number of received bytes, not 0. While fixing that (in patch 6/7), > rearranged the function to reduce its indentation. > Rebased series to v5.9-rc1 > > ---------------------------------------------------------------- > Guenter Roeck (7): > iio: cros_ec: Accept -EOPNOTSUPP as 'not supported' error code > cros_ec_lightbar: Accept more error codes from cros_ec_cmd_xfer_status > platform/chrome: cros_ec_sysfs: Report range of error codes from EC > pwm: cros-ec: Accept more error codes from cros_ec_cmd_xfer_status > platform/input: cros_ec: Replace -ENOTSUPP with -ENOPROTOOPT > platform/chrome: cros_ec_proto: Convert EC error codes to Linux error codes > pwm: cros-ec: Simplify EC error handling > > .../iio/common/cros_ec_sensors/cros_ec_sensors.c | 2 +- > drivers/input/keyboard/cros_ec_keyb.c | 2 +- > drivers/platform/chrome/cros_ec_lightbar.c | 10 ++-- > drivers/platform/chrome/cros_ec_proto.c | 57 +++++++++++++++++----- > drivers/platform/chrome/cros_ec_sysfs.c | 24 ++++----- > drivers/pwm/pwm-cros-ec.c | 37 +++++++------- > 6 files changed, 78 insertions(+), 54 deletions(-) > I applied all the patches and queued for 5.10 in the chrome-platform tree. If at some point we need to create an immutable branch I can provide it. Thanks, Enric
