From: Arnaud Pouliquen <arnaud.pouliquen@foss.st.com>
To: Bjorn Andersson <bjorn.andersson@linaro.org>,
Ohad Ben-Cohen <ohad@wizery.com>,
Mathieu Poirier <mathieu.poirier@linaro.org>
Cc: <linux-remoteproc@vger.kernel.org>,
<linux-kernel@vger.kernel.org>,
<linux-stm32@st-md-mailman.stormreply.com>,
<julien.massot@iot.bzh>, <arnaud.pouliquen@foss.st.com>
Subject: [PATCH v2 2/4] rpmsg: char: Introduce __rpmsg_chrdev_create_eptdev function
Date: Wed, 23 Jun 2021 17:05:02 +0200 [thread overview]
Message-ID: <20210623150504.14450-3-arnaud.pouliquen@foss.st.com> (raw)
In-Reply-To: <20210623150504.14450-1-arnaud.pouliquen@foss.st.com>
Introduce the __rpmsg_chrdev_create_eptdev internal function that returns
the rpmsg_eptdev context structure.
This patch prepares the introduction of a rpmsg channel device for the
char device. The rpmsg device will need a reference to the context.
Signed-off-by: Arnaud Pouliquen <arnaud.pouliquen@foss.st.com>
---
drivers/rpmsg/rpmsg_char.c | 24 +++++++++++++++++++-----
1 file changed, 19 insertions(+), 5 deletions(-)
diff --git a/drivers/rpmsg/rpmsg_char.c b/drivers/rpmsg/rpmsg_char.c
index fbe10d527c5c..50b7d4b00175 100644
--- a/drivers/rpmsg/rpmsg_char.c
+++ b/drivers/rpmsg/rpmsg_char.c
@@ -323,8 +323,9 @@ static void rpmsg_eptdev_release_device(struct device *dev)
kfree(eptdev);
}
-int rpmsg_chrdev_eptdev_create(struct rpmsg_device *rpdev, struct device *parent,
- struct rpmsg_channel_info chinfo)
+static struct rpmsg_eptdev *__rpmsg_chrdev_eptdev_create(struct rpmsg_device *rpdev,
+ struct device *parent,
+ struct rpmsg_channel_info chinfo)
{
struct rpmsg_eptdev *eptdev;
struct device *dev;
@@ -332,7 +333,7 @@ int rpmsg_chrdev_eptdev_create(struct rpmsg_device *rpdev, struct device *parent
eptdev = kzalloc(sizeof(*eptdev), GFP_KERNEL);
if (!eptdev)
- return -ENOMEM;
+ return ERR_PTR(-ENOMEM);
dev = &eptdev->dev;
eptdev->rpdev = rpdev;
@@ -374,9 +375,10 @@ int rpmsg_chrdev_eptdev_create(struct rpmsg_device *rpdev, struct device *parent
if (ret) {
dev_err(dev, "device_add failed: %d\n", ret);
put_device(dev);
+ return ERR_PTR(ret);
}
- return ret;
+ return eptdev;
free_ept_ida:
ida_simple_remove(&rpmsg_ept_ida, dev->id);
@@ -386,7 +388,19 @@ int rpmsg_chrdev_eptdev_create(struct rpmsg_device *rpdev, struct device *parent
put_device(dev);
kfree(eptdev);
- return ret;
+ return ERR_PTR(ret);
+}
+
+int rpmsg_chrdev_eptdev_create(struct rpmsg_device *rpdev, struct device *parent,
+ struct rpmsg_channel_info chinfo)
+{
+ struct rpmsg_eptdev *eptdev;
+
+ eptdev = __rpmsg_chrdev_eptdev_create(rpdev, parent, chinfo);
+ if (IS_ERR(eptdev))
+ return PTR_ERR(eptdev);
+
+ return 0;
}
EXPORT_SYMBOL(rpmsg_chrdev_eptdev_create);
--
2.17.1
next prev parent reply other threads:[~2021-06-23 15:08 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-06-23 15:05 [PATCH v2 0/4] rpmsg: char: introduce the rpmsg-raw channel Arnaud Pouliquen
2021-06-23 15:05 ` [PATCH v2 1/4] rpmsg: Introduce rpmsg_create_default_ept function Arnaud Pouliquen
2021-06-30 20:38 ` Mathieu Poirier
2021-06-23 15:05 ` Arnaud Pouliquen [this message]
2021-06-30 20:38 ` [PATCH v2 2/4] rpmsg: char: Introduce __rpmsg_chrdev_create_eptdev function Mathieu Poirier
2021-06-23 15:05 ` [PATCH v2 3/4] rpmsg: char: Add possibility to use default endpoint of the rpmsg device Arnaud Pouliquen
2021-06-30 20:48 ` Mathieu Poirier
2021-07-01 7:34 ` Arnaud POULIQUEN
2021-06-23 15:05 ` [PATCH v2 4/4] rpmsg: char: Introduce the "rpmsg-raw" channel Arnaud Pouliquen
2021-06-30 20:53 ` Mathieu Poirier
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