From: Guenter Roeck <linux@roeck-us.net>
To: Enric Balletbo i Serra <enric.balletbo@collabora.com>
Cc: "Jonathan Cameron" <jic23@kernel.org>,
"Benson Leung" <bleung@chromium.org>,
"Dmitry Torokhov" <dmitry.torokhov@gmail.com>,
"Thierry Reding" <thierry.reding@gmail.com>,
"Uwe Kleine-König" <u.kleine-koenig@pengutronix.de>,
"Lee Jones" <lee.jones@linaro.org>,
"Gwendal Grignou" <gwendal@chromium.org>,
"Brian Norris" <briannorris@chromium.org>,
"Yu-Hsuan Hsu" <yuhsuan@chromium.org>,
"Prashant Malani" <pmalani@chromium.org>,
linux-iio@vger.kernel.org, linux-input@vger.kernel.org,
linux-pwm@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: [PATCH v4 0/7] platform/chrome: cros_ec_proto: Convert EC error codes to Linux error codes
Date: Thu, 6 Aug 2020 08:32:41 -0700 [thread overview]
Message-ID: <20200806153248.204310-1-linux@roeck-us.net> (raw)
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.
----------------------------------------------------------------
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 | 52 +++++++++++++++++-----
drivers/platform/chrome/cros_ec_sysfs.c | 24 ++++------
drivers/pwm/pwm-cros-ec.c | 37 +++++++--------
6 files changed, 74 insertions(+), 53 deletions(-)
next reply other threads:[~2020-08-06 16:54 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-08-06 15:32 Guenter Roeck [this message]
2020-08-06 15:33 [PATCH v4 0/7] platform/chrome: cros_ec_proto: Convert EC error codes to Linux error codes Guenter Roeck
2020-08-21 8:21 ` Enric Balletbo i Serra
2020-08-21 15:39 ` Guenter Roeck
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