diff options
| author | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2013-01-08 14:31:11 (GMT) |
|---|---|---|
| committer | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2013-02-14 14:55:02 (GMT) |
| commit | c95571e68086d36e8e3369597b03ec29c63abec9 (patch) | |
| tree | 20cb4b0f1f9bbf49375ab6a6458668fd726f6841 /drivers/s390/char/fs3270.c | |
| parent | 57985d7e1e48f16548aa6904264e21bca15af0fc (diff) | |
| download | linux-c95571e68086d36e8e3369597b03ec29c63abec9.tar.xz | |
s390/3270: introduce device notifier
Add a notifier to create / destroy the device nodes for the tty view
and the fullscreen view. Only device nodes for online devices are
created and the device names will follow the convention as outlined
in Documentation/devices.txt: 3270/tty<x> for the tty nodes,
3270/tub<x> for hte fullscreen nodes and 3270/tub for the fullscreen
control node.
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'drivers/s390/char/fs3270.c')
| -rw-r--r-- | drivers/s390/char/fs3270.c | 29 |
1 files changed, 26 insertions, 3 deletions
diff --git a/drivers/s390/char/fs3270.c b/drivers/s390/char/fs3270.c index 9117045..230697a 100644 --- a/drivers/s390/char/fs3270.c +++ b/drivers/s390/char/fs3270.c @@ -443,7 +443,7 @@ fs3270_open(struct inode *inode, struct file *filp) tty_kref_put(tty); return -ENODEV; } - minor = tty->index + RAW3270_FIRSTMINOR; + minor = tty->index; tty_kref_put(tty); } mutex_lock(&fs3270_mutex); @@ -524,6 +524,25 @@ static const struct file_operations fs3270_fops = { .llseek = no_llseek, }; +void fs3270_create_cb(int minor) +{ + __register_chrdev(IBM_FS3270_MAJOR, minor, 1, "tub", &fs3270_fops); + device_create(class3270, NULL, MKDEV(IBM_FS3270_MAJOR, minor), + NULL, "3270/tub%d", minor); +} + +void fs3270_destroy_cb(int minor) +{ + device_destroy(class3270, MKDEV(IBM_FS3270_MAJOR, minor)); + __unregister_chrdev(IBM_FS3270_MAJOR, minor, 1, "tub"); +} + +struct raw3270_notifier fs3270_notifier = +{ + .create = fs3270_create_cb, + .destroy = fs3270_destroy_cb, +}; + /* * 3270 fullscreen driver initialization. */ @@ -532,16 +551,20 @@ fs3270_init(void) { int rc; - rc = register_chrdev(IBM_FS3270_MAJOR, "fs3270", &fs3270_fops); + rc = __register_chrdev(IBM_FS3270_MAJOR, 0, 1, "fs3270", &fs3270_fops); if (rc) return rc; + device_create(class3270, NULL, MKDEV(IBM_FS3270_MAJOR, 0), + NULL, "3270/tub"); + raw3270_register_notifier(&fs3270_notifier); return 0; } static void __exit fs3270_exit(void) { - unregister_chrdev(IBM_FS3270_MAJOR, "fs3270"); + raw3270_unregister_notifier(&fs3270_notifier); + __unregister_chrdev(IBM_FS3270_MAJOR, 0, 1, "fs3270"); } MODULE_LICENSE("GPL"); |