linux-remoteproc.vger.kernel.org archive mirror
 help / color / mirror / Atom feed
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>,
	Andy Gross <agross@kernel.org>
Cc: <linux-remoteproc@vger.kernel.org>,
	<linux-kernel@vger.kernel.org>,
	<linux-stm32@st-md-mailman.stormreply.com>,
	<linux-arm-msm@vger.kernel.org>, <arnaud.pouliquen@foss.st.com>
Subject: [PATCH 4/7] rpmsg: char: Introduce __rpmsg_chrdev_create_eptdev function
Date: Tue, 23 Mar 2021 13:27:34 +0100	[thread overview]
Message-ID: <20210323122737.23035-5-arnaud.pouliquen@foss.st.com> (raw)
In-Reply-To: <20210323122737.23035-1-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>

---
update from [1]
- propagate parent param in rpmsg_chrdev_create_eptdev,
- fix changelog.

[1] https://patchwork.kernel.org/project/linux-remoteproc/patch/20210219111501.14261-14-arnaud.pouliquen@foss.st.com/
---
 drivers/rpmsg/rpmsg_char.c | 21 +++++++++++++++++----
 1 file changed, 17 insertions(+), 4 deletions(-)

diff --git a/drivers/rpmsg/rpmsg_char.c b/drivers/rpmsg/rpmsg_char.c
index 5d4a768002ce..7f6d46078179 100644
--- a/drivers/rpmsg/rpmsg_char.c
+++ b/drivers/rpmsg/rpmsg_char.c
@@ -325,7 +325,8 @@ static void rpmsg_eptdev_release_device(struct device *dev)
 	kfree(eptdev);
 }
 
-int rpmsg_chrdev_create_eptdev(struct rpmsg_device *rpdev, struct device *parent,
+static struct rpmsg_eptdev *__rpmsg_chrdev_create_eptdev(struct rpmsg_device *rpdev,
+							 struct device *parent,
 			       struct rpmsg_channel_info chinfo, struct class *rpmsg_class)
 {
 	struct rpmsg_eptdev *eptdev;
@@ -334,7 +335,7 @@ int rpmsg_chrdev_create_eptdev(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;
@@ -378,7 +379,7 @@ int rpmsg_chrdev_create_eptdev(struct rpmsg_device *rpdev, struct device *parent
 		put_device(dev);
 	}
 
-	return ret;
+	return eptdev;
 
 free_ept_ida:
 	ida_simple_remove(&rpmsg_ept_ida, dev->id);
@@ -388,7 +389,19 @@ int rpmsg_chrdev_create_eptdev(struct rpmsg_device *rpdev, struct device *parent
 	put_device(dev);
 	kfree(eptdev);
 
-	return ret;
+	return ERR_PTR(ret);
+}
+
+int rpmsg_chrdev_create_eptdev(struct rpmsg_device *rpdev, struct device *parent,
+			       struct rpmsg_channel_info chinfo,  struct class *rpmsg_class)
+{
+	struct rpmsg_eptdev *eptdev;
+
+	eptdev = __rpmsg_chrdev_create_eptdev(rpdev, parent, chinfo, rpmsg_class);
+	if (IS_ERR(eptdev))
+		return PTR_ERR(eptdev);
+
+	return 0;
 }
 EXPORT_SYMBOL(rpmsg_chrdev_create_eptdev);
 
-- 
2.17.1


  parent reply	other threads:[~2021-03-23 12:29 UTC|newest]

Thread overview: 13+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-03-23 12:27 [PATCH 0/7] Restructure the rpmsg char and introduce the rpmsg-raw channel Arnaud Pouliquen
2021-03-23 12:27 ` [PATCH 1/7] rpmsg: char: Export eptdev create an destroy functions Arnaud Pouliquen
2021-03-23 12:27 ` [PATCH 2/7] rpmsg: Move the rpmsg control device from rpmsg_char to rpmsg_ctrl Arnaud Pouliquen
2021-04-09 17:36   ` Mathieu Poirier
2021-03-23 12:27 ` [PATCH 3/7] rpmsg: Update rpmsg_chrdev_register_device function Arnaud Pouliquen
2021-03-23 12:27 ` Arnaud Pouliquen [this message]
2021-04-09 17:53   ` [PATCH 4/7] rpmsg: char: Introduce __rpmsg_chrdev_create_eptdev function Mathieu Poirier
2021-03-23 12:27 ` [PATCH 5/7] rpmsg: char: Introduce a rpmsg driver for the rpmsg char device Arnaud Pouliquen
2021-04-12 19:53   ` Mathieu Poirier
2021-03-23 12:27 ` [PATCH 6/7] rpmsg: char: No dynamic endpoint management for the default one Arnaud Pouliquen
2021-03-23 12:27 ` [PATCH 7/7] rpmsg: char: Return error if user try to destroy a default endpoint Arnaud Pouliquen
2021-04-12 20:02 ` [PATCH 0/7] Restructure the rpmsg char and introduce the rpmsg-raw channel Mathieu Poirier
2021-04-13  7:02   ` Arnaud POULIQUEN

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20210323122737.23035-5-arnaud.pouliquen@foss.st.com \
    --to=arnaud.pouliquen@foss.st.com \
    --cc=agross@kernel.org \
    --cc=bjorn.andersson@linaro.org \
    --cc=linux-arm-msm@vger.kernel.org \
    --cc=linux-kernel@vger.kernel.org \
    --cc=linux-remoteproc@vger.kernel.org \
    --cc=linux-stm32@st-md-mailman.stormreply.com \
    --cc=mathieu.poirier@linaro.org \
    --cc=ohad@wizery.com \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body. 
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).