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firmware: arm_scmi: Add delayed response status check 

A successfully received delayed response could anyway report a failure at
the protocol layer in the message status field.

Add a check also for this error condition.

Link: https://lore.kernel.org/r/20210608103056.3388-1-cristian.marussi@arm.com
Fixes: 58ecdf03db ("firmware: arm_scmi: Add support for asynchronous commands and delayed response")
Signed-off-by: Cristian Marussi <cristian.marussi@arm.com>
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
This commit is contained in:
Cristian Marussi 2021-06-08 11:30:56 +01:00 committed by Sudeep Holla
parent 507cd4d2c5
commit f1748b1ee1
1 changed files with 6 additions and 2 deletions
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8
drivers/firmware/arm_scmi/driver.c
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@ -517,8 +517,12 @@ static int do_xfer_with_response(const struct scmi_protocol_handle *ph,
xfer->async_done = &async_response;
ret = do_xfer(ph, xfer);
if (!ret && !wait_for_completion_timeout(xfer->async_done, timeout))
ret = -ETIMEDOUT;
if (!ret) {
if (!wait_for_completion_timeout(xfer->async_done, timeout))
ret = -ETIMEDOUT;
else if (xfer->hdr.status)
ret = scmi_to_linux_errno(xfer->hdr.status);
}
xfer->async_done = NULL;
return ret;