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From: Arun Kumar Neelakantam <aneela@codeaurora.org>
To: ohad@wizery.com, bjorn.andersson@linaro.org, clew@codeaurora.org,
	sricharan@codeaurora.org
Cc: linux-remoteproc@vger.kernel.org, linux-kernel@vger.kernel.org,
	Arun Kumar Neelakantam <aneela@codeaurora.org>,
	Andy Gross <agross@kernel.org>,
	linux-arm-msm@vger.kernel.org (open list:ARM/QUALCOMM SUPPORT)
Subject: [PATCH V6 1/5] rpmsg: glink: Use complete_all for open states
Date: Wed, 20 May 2020 15:09:35 +0530	[thread overview]
Message-ID: <1589967579-15559-2-git-send-email-aneela@codeaurora.org> (raw)
In-Reply-To: <1589967579-15559-1-git-send-email-aneela@codeaurora.org>

From: Chris Lew <clew@codeaurora.org>

The open_req and open_ack completion variables are the state variables
to represent a remote channel as open. Use complete_all so there are no
races with waiters and using completion_done.

Signed-off-by: Chris Lew <clew@codeaurora.org>
Signed-off-by: Arun Kumar Neelakantam <aneela@codeaurora.org>
---
 drivers/rpmsg/qcom_glink_native.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/rpmsg/qcom_glink_native.c b/drivers/rpmsg/qcom_glink_native.c
index 1995f5b..ea2f33f 100644
--- a/drivers/rpmsg/qcom_glink_native.c
+++ b/drivers/rpmsg/qcom_glink_native.c
@@ -970,7 +970,7 @@ static int qcom_glink_rx_open_ack(struct qcom_glink *glink, unsigned int lcid)
 		return -EINVAL;
 	}
 
-	complete(&channel->open_ack);
+	complete_all(&channel->open_ack);
 
 	return 0;
 }
@@ -1178,7 +1178,7 @@ static int qcom_glink_announce_create(struct rpmsg_device *rpdev)
 	__be32 *val = defaults;
 	int size;
 
-	if (glink->intentless)
+	 if (glink->intentless || !completion_done(&channel->open_ack))
 		return 0;
 
 	prop = of_find_property(np, "qcom,intents", NULL);
@@ -1413,7 +1413,7 @@ static int qcom_glink_rx_open(struct qcom_glink *glink, unsigned int rcid,
 	channel->rcid = ret;
 	spin_unlock_irqrestore(&glink->idr_lock, flags);
 
-	complete(&channel->open_req);
+	complete_all(&channel->open_req);
 
 	if (create_device) {
 		rpdev = kzalloc(sizeof(*rpdev), GFP_KERNEL);
-- 
2.7.4

  reply	other threads:[~2020-05-20  9:40 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-05-20  9:39 [PATCH V5 0/5] Add chrdev and name query support for GLINK Arun Kumar Neelakantam
2020-05-20  9:39 ` Arun Kumar Neelakantam [this message]
2020-05-20  9:39 ` [PATCH V6 2/5] rpmsg: Guard against null endpoint ops in destroy Arun Kumar Neelakantam
2020-05-20  9:39 ` [PATCH V6 3/5] rpmsg: glink: Add support for rpmsg glink chrdev Arun Kumar Neelakantam
2020-05-20  9:39 ` [PATCH V6 4/5] rpmsg: glink: Expose rpmsg name attr for glink Arun Kumar Neelakantam
2020-05-20  9:39 ` [PATCH V6 5/5] rpmsg: glink: unregister rpmsg device during endpoint destroy Arun Kumar Neelakantam

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