From 9c5edb6c458b04a243c4ba09a60349367b36e761 Mon Sep 17 00:00:00 2001 From: Simon Glass Date: Wed, 18 Jun 2014 11:14:01 -0700 Subject: [PATCH] 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 Signed-off-by: Doug Anderson Signed-off-by: Lee Jones --- 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 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); -- 2.39.5