diff options
| author | Simon Glass <sjg@chromium.org> | 2014-06-18 20:14:01 +0200 |
|---|---|---|
| committer | Lee Jones <lee.jones@linaro.org> | 2014-07-09 15:58:16 +0200 |
| commit | 9c5edb6c458b04a243c4ba09a60349367b36e761 (patch) | |
| tree | 5f10cbc3b1603ddaa461d7ed6e2cbd789fd0c2f6 /drivers/mfd/cros_ec_spi.c | |
| parent | mfd: cros_ec: Tweak struct cros_ec_device for clarity (diff) | |
| download | linux-9c5edb6c458b04a243c4ba09a60349367b36e761.tar.xz linux-9c5edb6c458b04a243c4ba09a60349367b36e761.zip | |
mfd: cros_ec: Detect in-progress commands
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>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Diffstat (limited to 'drivers/mfd/cros_ec_spi.c')
| -rw-r--r-- | drivers/mfd/cros_ec_spi.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/mfd/cros_ec_spi.c b/drivers/mfd/cros_ec_spi.c index 6c3075fb5dc7..9d45d88813b8 100644 --- a/drivers/mfd/cros_ec_spi.c +++ b/drivers/mfd/cros_ec_spi.c @@ -288,6 +288,12 @@ 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); |