From: Kishon Vijay Abraham I <kishon@ti.com>
To: Ohad Ben-Cohen <ohad@wizery.com>,
Bjorn Andersson <bjorn.andersson@linaro.org>,
Jon Mason <jdmason@kudzu.us>, Dave Jiang <dave.jiang@intel.com>,
Allen Hubbe <allenbh@gmail.com>,
Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>,
Bjorn Helgaas <bhelgaas@google.com>,
"Michael S. Tsirkin" <mst@redhat.com>,
Jason Wang <jasowang@redhat.com>,
Paolo Bonzini <pbonzini@redhat.com>,
Stefan Hajnoczi <stefanha@redhat.com>,
Stefano Garzarella <sgarzare@redhat.com>
Cc: <linux-doc@vger.kernel.org>, <linux-kernel@vger.kernel.org>,
<linux-remoteproc@vger.kernel.org>, <linux-ntb@googlegroups.com>,
<linux-pci@vger.kernel.org>, <kvm@vger.kernel.org>,
<virtualization@lists.linux-foundation.org>,
<netdev@vger.kernel.org>
Subject: [RFC PATCH 15/22] samples/rpmsg: Setup delayed work to send message
Date: Thu, 2 Jul 2020 13:51:36 +0530 [thread overview]
Message-ID: <20200702082143.25259-16-kishon@ti.com> (raw)
In-Reply-To: <20200702082143.25259-1-kishon@ti.com>
Let us not send any message to the remote processor before
announce_create() callback has been invoked. Since announce_create() is
only invoked after ->probe() is completed, setup delayed work to start
sending message to the remote processor.
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
---
samples/rpmsg/rpmsg_client_sample.c | 28 +++++++++++++++++++++-------
1 file changed, 21 insertions(+), 7 deletions(-)
diff --git a/samples/rpmsg/rpmsg_client_sample.c b/samples/rpmsg/rpmsg_client_sample.c
index ae5081662283..514a51945d69 100644
--- a/samples/rpmsg/rpmsg_client_sample.c
+++ b/samples/rpmsg/rpmsg_client_sample.c
@@ -20,6 +20,8 @@ module_param(count, int, 0644);
struct instance_data {
int rx_count;
+ struct delayed_work send_msg_work;
+ struct rpmsg_device *rpdev;
};
static int rpmsg_sample_cb(struct rpmsg_device *rpdev, void *data, int len,
@@ -48,9 +50,21 @@ static int rpmsg_sample_cb(struct rpmsg_device *rpdev, void *data, int len,
return 0;
}
-static int rpmsg_sample_probe(struct rpmsg_device *rpdev)
+static void rpmsg_sample_send_msg_work(struct work_struct *work)
{
+ struct instance_data *idata = container_of(work, struct instance_data,
+ send_msg_work.work);
+ struct rpmsg_device *rpdev = idata->rpdev;
int ret;
+
+ /* send a message to our remote processor */
+ ret = rpmsg_send(rpdev->ept, MSG, strlen(MSG));
+ if (ret)
+ dev_err(&rpdev->dev, "rpmsg_send failed: %d\n", ret);
+}
+
+static int rpmsg_sample_probe(struct rpmsg_device *rpdev)
+{
struct instance_data *idata;
dev_info(&rpdev->dev, "new channel: 0x%x -> 0x%x!\n",
@@ -62,18 +76,18 @@ static int rpmsg_sample_probe(struct rpmsg_device *rpdev)
dev_set_drvdata(&rpdev->dev, idata);
- /* send a message to our remote processor */
- ret = rpmsg_send(rpdev->ept, MSG, strlen(MSG));
- if (ret) {
- dev_err(&rpdev->dev, "rpmsg_send failed: %d\n", ret);
- return ret;
- }
+ idata->rpdev = rpdev;
+ INIT_DELAYED_WORK(&idata->send_msg_work, rpmsg_sample_send_msg_work);
+ schedule_delayed_work(&idata->send_msg_work, msecs_to_jiffies(500));
return 0;
}
static void rpmsg_sample_remove(struct rpmsg_device *rpdev)
{
+ struct instance_data *idata = dev_get_drvdata(&rpdev->dev);
+
+ cancel_delayed_work_sync(&idata->send_msg_work);
dev_info(&rpdev->dev, "rpmsg sample client driver is removed\n");
}
--
2.17.1
next prev parent reply other threads:[~2020-07-02 8:25 UTC|newest]
Thread overview: 50+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-07-02 8:21 [RFC PATCH 00/22] Enhance VHOST to enable SoC-to-SoC communication Kishon Vijay Abraham I
2020-07-02 8:21 ` [RFC PATCH 01/22] vhost: Make _feature_ bits a property of vhost device Kishon Vijay Abraham I
2020-07-02 8:21 ` [RFC PATCH 02/22] vhost: Introduce standard Linux driver model in VHOST Kishon Vijay Abraham I
2020-07-02 8:21 ` [RFC PATCH 03/22] vhost: Add ops for the VHOST driver to configure VHOST device Kishon Vijay Abraham I
2020-07-02 8:21 ` [RFC PATCH 04/22] vringh: Add helpers to access vring in MMIO Kishon Vijay Abraham I
2020-07-02 8:21 ` [RFC PATCH 05/22] vhost: Add MMIO helpers for operations on vhost virtqueue Kishon Vijay Abraham I
2020-07-02 8:21 ` [RFC PATCH 06/22] vhost: Introduce configfs entry for configuring VHOST Kishon Vijay Abraham I
2020-07-02 8:21 ` [RFC PATCH 07/22] virtio_pci: Use request_threaded_irq() instead of request_irq() Kishon Vijay Abraham I
2020-07-02 8:21 ` [RFC PATCH 08/22] rpmsg: virtio_rpmsg_bus: Disable receive virtqueue callback when reading messages Kishon Vijay Abraham I
2020-07-02 8:21 ` [RFC PATCH 09/22] rpmsg: Introduce configfs entry for configuring rpmsg Kishon Vijay Abraham I
2020-07-02 8:21 ` [RFC PATCH 10/22] rpmsg: virtio_rpmsg_bus: Add Address Service Notification support Kishon Vijay Abraham I
2020-07-02 8:21 ` [RFC PATCH 11/22] rpmsg: virtio_rpmsg_bus: Move generic rpmsg structure to rpmsg_internal.h Kishon Vijay Abraham I
2020-07-02 8:21 ` [RFC PATCH 12/22] virtio: Add ops to allocate and free buffer Kishon Vijay Abraham I
2020-07-02 8:21 ` [RFC PATCH 13/22] rpmsg: virtio_rpmsg_bus: Use virtio_alloc_buffer() and virtio_free_buffer() Kishon Vijay Abraham I
2020-07-02 8:21 ` [RFC PATCH 14/22] rpmsg: Add VHOST based remote processor messaging bus Kishon Vijay Abraham I
2020-07-02 8:21 ` Kishon Vijay Abraham I [this message]
2020-07-02 8:21 ` [RFC PATCH 16/22] samples/rpmsg: Wait for address to be bound to rpdev for sending message Kishon Vijay Abraham I
2020-07-02 8:21 ` [RFC PATCH 17/22] rpmsg.txt: Add Documentation to configure rpmsg using configfs Kishon Vijay Abraham I
2020-07-02 8:21 ` [RFC PATCH 18/22] virtio_pci: Add VIRTIO driver for VHOST on Configurable PCIe Endpoint device Kishon Vijay Abraham I
2020-07-02 8:21 ` [RFC PATCH 19/22] PCI: endpoint: Add EP function driver to provide VHOST interface Kishon Vijay Abraham I
2020-07-02 8:21 ` [RFC PATCH 20/22] NTB: Add a new NTB client driver to implement VIRTIO functionality Kishon Vijay Abraham I
2020-07-02 8:21 ` [RFC PATCH 21/22] NTB: Add a new NTB client driver to implement VHOST functionality Kishon Vijay Abraham I
2020-07-02 8:21 ` [RFC PATCH 22/22] NTB: Describe ntb_virtio and ntb_vhost client in the documentation Kishon Vijay Abraham I
2020-07-02 9:51 ` [RFC PATCH 00/22] Enhance VHOST to enable SoC-to-SoC communication Michael S. Tsirkin
2020-07-02 10:10 ` Jason Wang
2020-07-02 13:35 ` Kishon Vijay Abraham I
2020-07-03 7:16 ` Jason Wang
2020-07-06 9:32 ` Kishon Vijay Abraham I
2020-07-07 9:47 ` Jason Wang
2020-07-07 14:45 ` Kishon Vijay Abraham I
2020-07-08 11:22 ` Jason Wang
2020-07-08 13:13 ` Kishon Vijay Abraham I
2020-07-09 6:26 ` Jason Wang
2020-08-28 10:34 ` Cornelia Huck
2020-09-01 5:24 ` Kishon Vijay Abraham I
2020-09-01 8:50 ` Jason Wang
2020-09-08 16:37 ` Cornelia Huck
2020-09-09 8:41 ` Jason Wang
2020-09-14 7:23 ` Kishon Vijay Abraham I
2020-09-15 8:18 ` Jason Wang
2020-09-15 15:47 ` Kishon Vijay Abraham I
2020-09-16 3:10 ` Jason Wang
2020-09-16 11:47 ` Kishon Vijay Abraham I
2020-09-16 11:47 ` Kishon Vijay Abraham I
2020-09-18 4:04 ` Jason Wang
2020-07-15 17:15 ` Mathieu Poirier
2020-09-01 4:40 ` Kishon Vijay Abraham I
2020-07-02 10:25 ` Kishon Vijay Abraham I
2020-07-02 17:31 ` Mathieu Poirier
2020-07-03 6:17 ` Kishon Vijay Abraham I
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