linux-kernel - [RFC PATCH 02/10] firmware: arm_scmi: Add missing xfer reinit

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Date:   Sun,  6 Jun 2021 23:12:24 +0100
From:   Cristian Marussi <cristian.marussi@....com>
To:     linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org
Cc:     sudeep.holla@....com, james.quinlan@...adcom.com,
        Jonathan.Cameron@...wei.com, f.fainelli@...il.com,
        etienne.carriere@...aro.org, vincent.guittot@...aro.org,
        souvik.chakravarty@....com, cristian.marussi@....com
Subject: [RFC PATCH 02/10] firmware: arm_scmi: Add missing xfer reinit_completion

Reusing timed out xfers in a loop can lead to issue if completion was not
properly reinitialized.

Signed-off-by: Cristian Marussi <cristian.marussi@....com>
---
 drivers/firmware/arm_scmi/driver.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/firmware/arm_scmi/driver.c b/drivers/firmware/arm_scmi/driver.c
index bee33f9c2032..759ae4a23e74 100644
--- a/drivers/firmware/arm_scmi/driver.c
+++ b/drivers/firmware/arm_scmi/driver.c
@@ -448,6 +448,7 @@ static int do_xfer(const struct scmi_protocol_handle *ph,
 			      xfer->hdr.poll_completion);
 
 	xfer->hdr.status = SCMI_SUCCESS;
+	reinit_completion(&xfer->done);
 	ret = info->desc->ops->send_message(cinfo, xfer);
 	if (ret < 0) {
 		dev_dbg(dev, "Failed to send message %d\n", ret);
-- 
2.17.1