Messages in this thread Patch in this message | | | From | Doug Anderson <> | Subject | [PATCH v2 04/10] mdf: cros_ec: Detect in-progress commands | Date | Wed, 18 Jun 2014 11:14:01 -0700 |
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From: Simon Glass <sjg@chromium.org>
Some commands take a while to execute. Use -EAGAIN to signal this to the caller.
Signed-off-by: Simon Glass <sjg@chromium.org> Signed-off-by: Doug Anderson <dianders@chromium.org> Acked-by: Lee Jones <lee.jones@linaro.org> --- Changes in v2: None
drivers/mfd/cros_ec_spi.c | 6 ++++++ 1 file changed, 6 insertions(+)
diff --git a/drivers/mfd/cros_ec_spi.c b/drivers/mfd/cros_ec_spi.c index 52d4d7b..c29a2d7 100644 --- a/drivers/mfd/cros_ec_spi.c +++ b/drivers/mfd/cros_ec_spi.c @@ -292,6 +292,12 @@ static int cros_ec_cmd_xfer_spi(struct cros_ec_device *ec_dev, /* 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->cmd); + ret = -EAGAIN; + goto exit; + } dev_warn(ec_dev->dev, "command 0x%02x returned an error %d\n", ec_msg->cmd, ptr[0]); debug_packet(ec_dev->dev, "in_err", ptr, len); -- 2.0.0.526.g5318336
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