diff options
| author |   Arnaud Pouliquen <arnaud.pouliquen@foss.st.com> | 2022-01-24 11:25:21 +0100 |
|---|---|---|
| committer |   Bjorn Andersson <bjorn.andersson@linaro.org> | 2022-03-13 11:49:53 -0500 |
| commit | cc9da7de4a7c188fbcc4536a460cb73193a68b46 (patch) | |
| tree | 9b8b1cf4fcbdf0a4e93481a1c3b3109aed760503 /drivers/rpmsg | |
| parent | rpmsg: Update rpmsg_chrdev_register_device function (diff) | |
| download | linux-dev-cc9da7de4a7c188fbcc4536a460cb73193a68b46.tar.xz linux-dev-cc9da7de4a7c188fbcc4536a460cb73193a68b46.zip | |
rpmsg: char: Refactor rpmsg_chrdev_eptdev_create function
Introduce the rpmsg_chrdev_eptdev_alloc and rpmsg_chrdev_eptdev_add
internal function to split the allocation part from the device add.
This patch prepares the introduction of a rpmsg channel device for the
char device. An default endpoint will be created,
referenced in the rpmsg_eptdev structure before adding the devices.
Signed-off-by: Arnaud Pouliquen <arnaud.pouliquen@foss.st.com>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Link: https://lore.kernel.org/r/20220124102524.295783-9-arnaud.pouliquen@foss.st.com
Diffstat (limited to 'drivers/rpmsg')
| -rw-r--r-- | drivers/rpmsg/rpmsg_char.c | 33 |
1 files changed, 28 insertions, 5 deletions
diff --git a/drivers/rpmsg/rpmsg_char.c b/drivers/rpmsg/rpmsg_char.c index 644b7d36707c..bf7311d64e42 100644 --- a/drivers/rpmsg/rpmsg_char.c +++ b/drivers/rpmsg/rpmsg_char.c @@ -330,20 +330,18 @@ 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_alloc(struct rpmsg_device *rpdev, + struct device *parent) { struct rpmsg_eptdev *eptdev; struct device *dev; - int ret; eptdev = kzalloc(sizeof(*eptdev), GFP_KERNEL); if (!eptdev) - return -ENOMEM; + return ERR_PTR(-ENOMEM); dev = &eptdev->dev; eptdev->rpdev = rpdev; - eptdev->chinfo = chinfo; mutex_init(&eptdev->ept_lock); spin_lock_init(&eptdev->queue_lock); @@ -359,6 +357,16 @@ int rpmsg_chrdev_eptdev_create(struct rpmsg_device *rpdev, struct device *parent cdev_init(&eptdev->cdev, &rpmsg_eptdev_fops); eptdev->cdev.owner = THIS_MODULE; + return eptdev; +} + +static int rpmsg_chrdev_eptdev_add(struct rpmsg_eptdev *eptdev, struct rpmsg_channel_info chinfo) +{ + struct device *dev = &eptdev->dev; + int ret; + + eptdev->chinfo = chinfo; + ret = ida_simple_get(&rpmsg_minor_ida, 0, RPMSG_DEV_MAX, GFP_KERNEL); if (ret < 0) goto free_eptdev; @@ -389,6 +397,21 @@ free_eptdev: return ret; } + +int rpmsg_chrdev_eptdev_create(struct rpmsg_device *rpdev, struct device *parent, + struct rpmsg_channel_info chinfo) +{ + struct rpmsg_eptdev *eptdev; + int ret; + + eptdev = rpmsg_chrdev_eptdev_alloc(rpdev, parent); + if (IS_ERR(eptdev)) + return PTR_ERR(eptdev); + + ret = rpmsg_chrdev_eptdev_add(eptdev, chinfo); + + return ret; +} EXPORT_SYMBOL(rpmsg_chrdev_eptdev_create); static int rpmsg_chrdev_init(void) |