diff options
| author | Arnaud Pouliquen <arnaud.pouliquen@foss.st.com> | 2021-06-23 17:05:02 +0200 |
|---|---|---|
| committer | Dong Aisheng <aisheng.dong@nxp.com> | 2021-11-02 16:26:13 +0800 |
| commit | d4a99f4641549073f87fbbf776502abf62533410 (patch) | |
| tree | 3d26a7ff855f4813dc377c76c67f4f68c3e3400e /drivers/rpmsg | |
| parent | 9a70f79825287f4af9a002fa72efff13196b9bb1 (diff) | |
rpmsg: char: Introduce __rpmsg_chrdev_create_eptdev function
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>
Diffstat (limited to 'drivers/rpmsg')
| -rw-r--r-- | drivers/rpmsg/rpmsg_char.c | 24 |
1 files 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 @@ free_eptdev: 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); |