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Commit 9c5edb6c authored by Simon Glass's avatar Simon Glass Committed by Lee Jones
Browse files

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: default avatarSimon Glass <sjg@chromium.org>
Signed-off-by: default avatarDoug Anderson <dianders@chromium.org>
Signed-off-by: default avatarLee Jones <lee.jones@linaro.org>
parent 7e6cb5b4

drivers/mfd/cros_ec_spi.c

+6 −0
Original line number Diff line number Diff line
@@ -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);