From: Bjorn Andersson <bjorn.andersson@linaro.org>
To: Ohad Ben-Cohen <ohad@wizery.com>,
Bjorn Andersson <bjorn.andersson@linaro.org>
Cc: linux-remoteproc@vger.kernel.org, linux-arm-msm@vger.kernel.org,
linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org
Subject: [PATCH v2 16/17] rpmsg: Allow callback to return errors
Date: Thu, 1 Sep 2016 15:28:08 -0700 [thread overview]
Message-ID: <1472768889-3906-17-git-send-email-bjorn.andersson@linaro.org> (raw)
In-Reply-To: <1472768889-3906-1-git-send-email-bjorn.andersson@linaro.org>
Some rpmsg backends support holding on to and redelivering messages upon
failed handling of them, so provide a way for the callback to report and
error and allow the backends to handle this.
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
---
Changes since v1:
- None
drivers/rpmsg/virtio_rpmsg_bus.c | 10 ++++++----
include/linux/rpmsg.h | 4 ++--
samples/rpmsg/rpmsg_client_sample.c | 6 ++++--
3 files changed, 12 insertions(+), 8 deletions(-)
diff --git a/drivers/rpmsg/virtio_rpmsg_bus.c b/drivers/rpmsg/virtio_rpmsg_bus.c
index 671cb1803431..3090b0d3072f 100644
--- a/drivers/rpmsg/virtio_rpmsg_bus.c
+++ b/drivers/rpmsg/virtio_rpmsg_bus.c
@@ -791,8 +791,8 @@ static void rpmsg_xmit_done(struct virtqueue *svq)
}
/* invoked when a name service announcement arrives */
-static void rpmsg_ns_cb(struct rpmsg_device *rpdev, void *data, int len,
- void *priv, u32 src)
+static int rpmsg_ns_cb(struct rpmsg_device *rpdev, void *data, int len,
+ void *priv, u32 src)
{
struct rpmsg_ns_msg *msg = data;
struct rpmsg_device *newch;
@@ -808,7 +808,7 @@ static void rpmsg_ns_cb(struct rpmsg_device *rpdev, void *data, int len,
if (len != sizeof(*msg)) {
dev_err(dev, "malformed ns msg (%d)\n", len);
- return;
+ return -EINVAL;
}
/*
@@ -819,7 +819,7 @@ static void rpmsg_ns_cb(struct rpmsg_device *rpdev, void *data, int len,
*/
if (rpdev) {
dev_err(dev, "anomaly: ns ept has an rpdev handle\n");
- return;
+ return -EINVAL;
}
/* don't trust the remote processor for null terminating the name */
@@ -842,6 +842,8 @@ static void rpmsg_ns_cb(struct rpmsg_device *rpdev, void *data, int len,
if (!newch)
dev_err(dev, "rpmsg_create_channel failed\n");
}
+
+ return 0;
}
static int rpmsg_probe(struct virtio_device *vdev)
diff --git a/include/linux/rpmsg.h b/include/linux/rpmsg.h
index 71b16d37503a..452d393cc8dd 100644
--- a/include/linux/rpmsg.h
+++ b/include/linux/rpmsg.h
@@ -80,7 +80,7 @@ struct rpmsg_device {
const struct rpmsg_device_ops *ops;
};
-typedef void (*rpmsg_rx_cb_t)(struct rpmsg_device *, void *, int, void *, u32);
+typedef int (*rpmsg_rx_cb_t)(struct rpmsg_device *, void *, int, void *, u32);
/**
* struct rpmsg_endpoint - binds a local rpmsg address to its user
@@ -129,7 +129,7 @@ struct rpmsg_driver {
const struct rpmsg_device_id *id_table;
int (*probe)(struct rpmsg_device *dev);
void (*remove)(struct rpmsg_device *dev);
- void (*callback)(struct rpmsg_device *, void *, int, void *, u32);
+ int (*callback)(struct rpmsg_device *, void *, int, void *, u32);
};
int register_rpmsg_device(struct rpmsg_device *dev);
diff --git a/samples/rpmsg/rpmsg_client_sample.c b/samples/rpmsg/rpmsg_client_sample.c
index 4fcd7ee13fb9..f161dfd3e70a 100644
--- a/samples/rpmsg/rpmsg_client_sample.c
+++ b/samples/rpmsg/rpmsg_client_sample.c
@@ -28,7 +28,7 @@ struct instance_data {
int rx_count;
};
-static void rpmsg_sample_cb(struct rpmsg_device *rpdev, void *data, int len,
+static int rpmsg_sample_cb(struct rpmsg_device *rpdev, void *data, int len,
void *priv, u32 src)
{
int ret;
@@ -43,13 +43,15 @@ static void rpmsg_sample_cb(struct rpmsg_device *rpdev, void *data, int len,
/* samples should not live forever */
if (idata->rx_count >= MSG_LIMIT) {
dev_info(&rpdev->dev, "goodbye!\n");
- return;
+ return 0;
}
/* send a new message now */
ret = rpmsg_send(rpdev->ept, MSG, strlen(MSG));
if (ret)
dev_err(&rpdev->dev, "rpmsg_send failed: %d\n", ret);
+
+ return 0;
}
static int rpmsg_sample_probe(struct rpmsg_device *rpdev)
--
2.5.0
next prev parent reply other threads:[~2016-09-01 22:28 UTC|newest]
Thread overview: 32+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-09-01 22:27 [PATCH v2 00/17] Make rpmsg a framework Bjorn Andersson
2016-09-01 22:27 ` [PATCH v2 01/17] rpmsg: Enable matching devices with drivers based on DT Bjorn Andersson
2016-09-08 1:46 ` spjoshi
2016-09-09 4:30 ` Bjorn Andersson
2016-09-09 22:07 ` Sarangdhar Joshi
2016-09-01 22:27 ` [PATCH v2 02/17] rpmsg: Name rpmsg devices based on channel id Bjorn Andersson
2016-09-08 1:46 ` spjoshi
2016-09-01 22:27 ` [PATCH v2 03/17] rpmsg: rpmsg_send() operations takes rpmsg_endpoint Bjorn Andersson
2016-09-01 22:27 ` [PATCH v2 04/17] rpmsg: Make rpmsg_create_ept() take channel_info struct Bjorn Andersson
2016-09-01 22:27 ` [PATCH v2 05/17] rpmsg: Clean up rpmsg device vs channel naming Bjorn Andersson
2016-09-01 22:27 ` [PATCH v2 06/17] rpmsg: Introduce indirection table for rpmsg_device operations Bjorn Andersson
2016-09-01 22:27 ` [PATCH v2 07/17] rpmsg: Move rpmsg_device API to new file Bjorn Andersson
2016-09-01 22:28 ` [PATCH v2 08/17] rpmsg: Indirection table for rpmsg_endpoint operations Bjorn Andersson
2016-09-01 22:28 ` [PATCH v2 09/17] rpmsg: Move endpoint related interface to rpmsg core Bjorn Andersson
2016-09-01 22:28 ` [PATCH v2 10/17] rpmsg: Move helper for finding rpmsg devices to core Bjorn Andersson
2016-09-01 22:28 ` [PATCH v2 11/17] rpmsg: Split off generic tail of create_channel() Bjorn Andersson
2016-09-01 22:28 ` [PATCH v2 12/17] rpmsg: Split rpmsg core and virtio backend Bjorn Andersson
2016-09-01 22:28 ` [PATCH v2 13/17] rpmsg: Hide rpmsg indirection tables Bjorn Andersson
2016-09-01 22:28 ` [PATCH v2 14/17] rpmsg: virtio: Hide vrp pointer from the public API Bjorn Andersson
2016-09-01 22:28 ` [PATCH v2 15/17] rpmsg: Move virtio specifics from public header Bjorn Andersson
2016-09-01 22:28 ` Bjorn Andersson [this message]
2016-09-01 22:28 ` [PATCH v2 17/17] rpmsg: Introduce Qualcomm SMD backend Bjorn Andersson
2016-09-12 16:52 ` [PATCH v2 00/17] Make rpmsg a framework Lina Iyer
2016-09-12 18:00 ` Bjorn Andersson
2016-09-12 18:13 ` Jeffrey Hugo
2016-09-12 18:49 ` Bjorn Andersson
2016-09-12 19:21 ` Jeffrey Hugo
2016-09-12 19:58 ` Bjorn Andersson
2016-09-12 21:36 ` Karthikeyan Ramasubramanian
2016-09-12 21:53 ` Bjorn Andersson
2016-09-12 22:22 ` Lina Iyer
2016-09-12 22:58 ` Bjorn Andersson
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