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staging: ozwpan: udev support

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Register ozmo_wpan class with sysfs & support for udev
to create device node.

Signed-off-by: Rupesh Gujare <rgujare@ozmodevices.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Rupesh Gujare 2012-06-20 13:36:10 +01:00 committed by Greg Kroah-Hartman
parent 00ec12b827
commit 6261c1ee6c
1 changed files with 23 additions and 1 deletions
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24
drivers/staging/ozwpan/ozcdev.c
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@ -330,10 +330,12 @@ const struct file_operations oz_fops = {
int oz_cdev_register(void)
{
int err;
struct class *cl;
struct device *dev;
memset(&g_cdev, 0, sizeof(g_cdev));
err = alloc_chrdev_region(&g_cdev.devnum, 0, 1, "ozwpan");
if (err < 0)
return err;
goto out3;
oz_trace("Alloc dev number %d:%d\n", MAJOR(g_cdev.devnum),
MINOR(g_cdev.devnum));
cdev_init(&g_cdev.cdev, &oz_fops);
@ -342,7 +344,27 @@ int oz_cdev_register(void)
spin_lock_init(&g_cdev.lock);
init_waitqueue_head(&g_cdev.rdq);
err = cdev_add(&g_cdev.cdev, g_cdev.devnum, 1);
if (err < 0) {
oz_trace("Failed to add cdev\n");
goto out2;
}
cl = class_create(THIS_MODULE, "ozmo_wpan");
if (IS_ERR(cl)) {
oz_trace("Failed to register ozmo_wpan class\n");
goto out1;
}
dev = device_create(cl, NULL, g_cdev.devnum, NULL, "ozwpan");
if (IS_ERR(dev)) {
oz_trace("Failed to create sysfs entry for cdev\n");
goto out1;
}
return 0;
out1:
cdev_del(&g_cdev.cdev);
out2:
unregister_chrdev_region(g_cdev.devnum, 1);
out3:
return err;
}
/*------------------------------------------------------------------------------
* Context: process