linux-kernel - [PATCH v2 2/2] net: qrtr: Fix FIXME related to qrtr_ns

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Message-Id: <20200302070305.612067-3-bjorn.andersson@linaro.org>
Date:   Sun,  1 Mar 2020 23:03:05 -0800
From:   Bjorn Andersson <bjorn.andersson@...aro.org>
To:     "David S. Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>,
        Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>
Cc:     netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-arm-msm@...r.kernel.org
Subject: [PATCH v2 2/2] net: qrtr: Fix FIXME related to qrtr_ns_init()

The 2 second delay before calling qrtr_ns_init() meant that the remote
processors would register as endpoints in qrtr and the say_hello() call
would therefor broadcast the outgoing HELLO to them. With the HELLO
handshake corrected this delay is no longer needed.

Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>
Tested-by: Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>
Signed-off-by: Bjorn Andersson <bjorn.andersson@...aro.org>
---

Changes since v1:
- Cleaned up remaining work queue pieces
- Picked up Mani's r-b and t-b

 net/qrtr/ns.c   |  2 +-
 net/qrtr/qrtr.c | 10 +---------
 net/qrtr/qrtr.h |  2 +-
 3 files changed, 3 insertions(+), 11 deletions(-)

diff --git a/net/qrtr/ns.c b/net/qrtr/ns.c
index e3f11052b5f6..cfd4bd07a62b 100644
--- a/net/qrtr/ns.c
+++ b/net/qrtr/ns.c
@@ -693,7 +693,7 @@ static void qrtr_ns_data_ready(struct sock *sk)
 	queue_work(qrtr_ns.workqueue, &qrtr_ns.work);
 }
 
-void qrtr_ns_init(struct work_struct *work)
+void qrtr_ns_init(void)
 {
 	struct sockaddr_qrtr sq;
 	int ret;
diff --git a/net/qrtr/qrtr.c b/net/qrtr/qrtr.c
index 423310896285..e22092e4a783 100644
--- a/net/qrtr/qrtr.c
+++ b/net/qrtr/qrtr.c
@@ -9,7 +9,6 @@
 #include <linux/termios.h>	/* For TIOCINQ/OUTQ */
 #include <linux/spinlock.h>
 #include <linux/wait.h>
-#include <linux/workqueue.h>
 
 #include <net/sock.h>
 
@@ -110,8 +109,6 @@ static DEFINE_MUTEX(qrtr_node_lock);
 static DEFINE_IDR(qrtr_ports);
 static DEFINE_MUTEX(qrtr_port_lock);
 
-static struct delayed_work qrtr_ns_work;
-
 /**
  * struct qrtr_node - endpoint node
  * @ep_lock: lock for endpoint management and callbacks
@@ -1263,11 +1260,7 @@ static int __init qrtr_proto_init(void)
 		return rc;
 	}
 
-	/* FIXME: Currently, this 2s delay is required to catch the NEW_SERVER
-	 * messages from routers. But the fix could be somewhere else.
-	 */
-	INIT_DELAYED_WORK(&qrtr_ns_work, qrtr_ns_init);
-	schedule_delayed_work(&qrtr_ns_work, msecs_to_jiffies(2000));
+	qrtr_ns_init();
 
 	return rc;
 }
@@ -1275,7 +1268,6 @@ postcore_initcall(qrtr_proto_init);
 
 static void __exit qrtr_proto_fini(void)
 {
-	cancel_delayed_work_sync(&qrtr_ns_work);
 	qrtr_ns_remove();
 	sock_unregister(qrtr_family.family);
 	proto_unregister(&qrtr_proto);
diff --git a/net/qrtr/qrtr.h b/net/qrtr/qrtr.h
index 53a237a28971..dc2b67f17927 100644
--- a/net/qrtr/qrtr.h
+++ b/net/qrtr/qrtr.h
@@ -29,7 +29,7 @@ void qrtr_endpoint_unregister(struct qrtr_endpoint *ep);
 
 int qrtr_endpoint_post(struct qrtr_endpoint *ep, const void *data, size_t len);
 
-void qrtr_ns_init(struct work_struct *work);
+void qrtr_ns_init(void);
 
 void qrtr_ns_remove(void);
 
-- 
2.24.0