From: Cristian Marussi <cristian.marussi@arm.com>
To: linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org
Cc: sudeep.holla@arm.com, cristian.marussi@arm.com
Subject: [PATCH] firmware: arm_scmi: Add delayed response status check
Date: Tue, 8 Jun 2021 11:30:56 +0100 [thread overview]
Message-ID: <20210608103056.3388-1-cristian.marussi@arm.com> (raw)
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.
Fixes: 58ecdf03dbb9 ("firmware: arm_scmi: Add support for asynchronous commands and delayed response")
Signed-off-by: Cristian Marussi <cristian.marussi@arm.com>
---
drivers/firmware/arm_scmi/driver.c | 8 ++++++--
1 file changed, 6 insertions(+), 2 deletions(-)
diff --git a/drivers/firmware/arm_scmi/driver.c b/drivers/firmware/arm_scmi/driver.c
index 759ae4a23e74..6826d516e4eb 100644
--- a/drivers/firmware/arm_scmi/driver.c
+++ b/drivers/firmware/arm_scmi/driver.c
@@ -519,8 +519,12 @@ 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;
--
2.17.1
next reply other threads:[~2021-06-08 10:31 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-06-08 10:30 Cristian Marussi [this message]
2021-06-09 20:46 ` [PATCH] firmware: arm_scmi: Add delayed response status check Sudeep Holla
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