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()
----------------------------------------------------------------
Guenter Roeck (4):
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
platform/chrome: cros_ec_proto: Convert EC error codes to Linux error codes
.../iio/common/cros_ec_sensors/cros_ec_sensors.c | 2 +-
drivers/platform/chrome/cros_ec_lightbar.c | 10 +++---
drivers/platform/chrome/cros_ec_proto.c | 37 +++++++++++++++++-----
drivers/platform/chrome/cros_ec_sysfs.c | 24 ++++++--------
4 files changed, 43 insertions(+), 30 deletions(-)
