Hi Yu-Hsuan,
On 3/7/20 10:48, Yu-Hsuan Hsu wrote:
Enric Balletbo i Serra enric.balletbo@collabora.com 於 2020年7月3日 週五 下午4:38寫道：
Hi Yu-Hsuan,
Thank you for your patch
On 3/7/20 9:19, Yu-Hsuan Hsu wrote:
Log results of failed EC commands to identify a problem more easily.
Replace cros_ec_cmd_xfer_status with cros_ec_cmd_xfer because the result has already been checked in this function. The wrapper is not needed.
Nack, we did an effort to remove all public users of cros_ec_cmd_xfer() in favour of cros_ec_cmd_xfer_status() and you are reintroducing again. You can do the same but using cros_ec_cmd_xfer_status(). In fact, your patch will not build on top of the upcoming changes.
Thanks! But I have a question about implementing it. Does it look like the one below? ret = cros_ec_cmd_xfer_status(ec_dev, msg); if (ret < 0) {
In this case will already print an error.
What are you trying to achieve?
If the only reason is of this patch is print a message you should either, or enable dynamic printk and enable dev_dbg or event better use the kernel trace functionality. There is no need to be more verbose.
Example: $ echo 1 > /sys/kernel/debug/tracing/events/cros_ec/enable $ cat /sys/kernel/debug/tracing/trace
369.416372: cros_ec_request_start: version: 0, command: EC_CMD_USB_PD_POWER_INFO 369.420528: cros_ec_request_done: version: 0, command: EC_CMD_USB_PD_POWER_INFO, ec result: EC_RES_SUCCESS, retval: 16
Cheers, Enric
if (ret == -EPROTO) dev_err(..., msg->result) goto error; } I'm not sure whether it makes sense to check ret == -EPROTO here.
Signed-off-by: Yu-Hsuan Hsu yuhsuan@chromium.org
sound/soc/codecs/cros_ec_codec.c | 9 ++++++++- 1 file changed, 8 insertions(+), 1 deletion(-)
diff --git a/sound/soc/codecs/cros_ec_codec.c b/sound/soc/codecs/cros_ec_codec.c index 8d45c628e988e..a4ab62f59efa6 100644 --- a/sound/soc/codecs/cros_ec_codec.c +++ b/sound/soc/codecs/cros_ec_codec.c @@ -90,10 +90,17 @@ static int send_ec_host_command(struct cros_ec_device *ec_dev, uint32_t cmd, if (outsize) memcpy(msg->data, out, outsize);
ret = cros_ec_cmd_xfer_status(ec_dev, msg);
ret = cros_ec_cmd_xfer(ec_dev, msg); if (ret < 0) goto error;if (msg->result != EC_RES_SUCCESS) {dev_err(ec_dev->dev, "Command %d failed: %d\n", cmd,msg->result);ret = -EPROTO;goto error;}if (insize) memcpy(in, msg->data, insize);