Hi Doug,
On 16 June 2014 14:39, Doug Anderson <diand...@chromium.org> wrote:
> From: Bill Richardson <wfric...@chromium.org>
>
> Just because the host was able to talk to the EC doesn't mean that the EC
> was happy with what it was told. Errors in communincation are not the same
> as error messages from the EC itself.
>
> This change lets the EC report its errors separately.
>
> Signed-off-by: Bill Richardson <wfric...@chromium.org>
> Signed-off-by: Doug Anderson <diand...@chromium.org>
> ---
> drivers/mfd/cros_ec_i2c.c | 15 +++++++++++----
> drivers/mfd/cros_ec_spi.c | 26 ++++++++++++++------------
> 2 files changed, 25 insertions(+), 16 deletions(-)
>
> diff --git a/drivers/mfd/cros_ec_i2c.c b/drivers/mfd/cros_ec_i2c.c
> index 5bb32f5..2276096 100644
> --- a/drivers/mfd/cros_ec_i2c.c
> +++ b/drivers/mfd/cros_ec_i2c.c
> @@ -92,11 +92,18 @@ static int cros_ec_cmd_xfer_i2c(struct cros_ec_device
> *ec_dev,
> }
>
> /* check response error code */
> - if (i2c_msg[1].buf[0]) {
> - dev_warn(ec_dev->dev, "command 0x%02x returned an error %d\n",
> - msg->command, i2c_msg[1].buf[0]);
> - ret = -EINVAL;
> + msg->result = i2c_msg[1].buf[0];
> + switch (msg->result) {
> + case EC_RES_SUCCESS:
> + break;
> + case EC_RES_IN_PROGRESS:
> + ret = -EAGAIN;
> + dev_dbg(ec_dev->dev, "command 0x%02x in progress\n",
> + msg->command);
> goto done;
> + default:
> + dev_warn(ec_dev->dev, "command 0x%02x returned %d\n",
> + msg->command, msg->result);
> }
>
> /* copy response packet payload and compute checksum */
> diff --git a/drivers/mfd/cros_ec_spi.c b/drivers/mfd/cros_ec_spi.c
> index 09ca789..4d34f1c 100644
> --- a/drivers/mfd/cros_ec_spi.c
> +++ b/drivers/mfd/cros_ec_spi.c
> @@ -289,21 +289,23 @@ static int cros_ec_cmd_xfer_spi(struct cros_ec_device
> *ec_dev,
> goto exit;
> }
>
> - /* check response error code */
> ptr = ec_dev->din;
> - if (ptr[0]) {
> - if (ptr[0] == EC_RES_IN_PROGRESS) {
> - dev_dbg(ec_dev->dev, "command 0x%02x in progress\n",
> - ec_msg->command);
> - ret = -EAGAIN;
> - goto exit;
> - }
> - dev_warn(ec_dev->dev, "command 0x%02x returned an error %d\n",
> - ec_msg->command, ptr[0]);
> - debug_packet(ec_dev->dev, "in_err", ptr, len);
> - ret = -EINVAL;
> +
> + /* check response error code */
> + ec_msg->result = ptr[0];
> + switch (ec_msg->result) {
> + case EC_RES_SUCCESS:
> + break;
> + case EC_RES_IN_PROGRESS:
> + ret = -EAGAIN;
> + dev_dbg(ec_dev->dev, "command 0x%02x in progress\n",
> + ec_msg->command);
> goto exit;
> + default:
> + dev_warn(ec_dev->dev, "command 0x%02x returned %d\n",
> + ec_msg->command, ec_msg->result);
> }
Since this code is the same as the above, should it go in a common
function in cros_ec?
> +
> len = ptr[1];
> sum = ptr[0] + ptr[1];
> if (len > ec_msg->insize) {
> --
> 2.0.0.526.g5318336
>
Regards,
Simon
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