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Message-Id: <20210806081113.919744983@linuxfoundation.org>
Date: Fri, 6 Aug 2021 10:17:01 +0200
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: linux-kernel@...r.kernel.org
Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
stable@...r.kernel.org,
Cristian Marussi <cristian.marussi@....com>,
Sudeep Holla <sudeep.holla@....com>
Subject: [PATCH 5.10 23/30] firmware: arm_scmi: Add delayed response status check
From: Cristian Marussi <cristian.marussi@....com>
commit f1748b1ee1fa0fd1a074504045b530b62f949188 upstream.
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: 58ecdf03dbb9 ("firmware: arm_scmi: Add support for asynchronous commands and delayed response")
Signed-off-by: Cristian Marussi <cristian.marussi@....com>
Signed-off-by: Sudeep Holla <sudeep.holla@....com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
drivers/firmware/arm_scmi/driver.c | 8 ++++++--
1 file changed, 6 insertions(+), 2 deletions(-)
--- a/drivers/firmware/arm_scmi/driver.c
+++ b/drivers/firmware/arm_scmi/driver.c
@@ -436,8 +436,12 @@ int scmi_do_xfer_with_response(const str
xfer->async_done = &async_response;
ret = scmi_do_xfer(handle, 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;
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