| Message ID | 20200726220101.29059-1-linux@roeck-us.net (mailing list archive) |
|---|---|
| Headers | show |
| Series | platform/chrome: cros_ec_proto: Convert EC error codes to Linux error codes | expand |
On Sun, Jul 26, 2020 at 03:00:55PM -0700, 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 A small potential (i.e., being paranoid about future changes) note on patch 6, but otherwise looks fine to me: Reviewed-by: Brian Norris <briannorris@chromium.org>
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 ---------------------------------------------------------------- Guenter Roeck (6): 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 .../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 | 52 +++++++++++++++++----- drivers/platform/chrome/cros_ec_sysfs.c | 24 ++++------ drivers/pwm/pwm-cros-ec.c | 21 ++++++--- 6 files changed, 71 insertions(+), 40 deletions(-)