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Commit 6261c1ee authored by Rupesh Gujare's avatar Rupesh Gujare Committed by Greg Kroah-Hartman
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staging: ozwpan: udev support 



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

Signed-off-by: default avatarRupesh Gujare <rgujare@ozmodevices.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 00ec12b8

drivers/staging/ozwpan/ozcdev.c

+23 −1
Original line number Original line Diff line number Diff line
@@ -330,10 +330,12 @@ const struct file_operations oz_fops = { 
int oz_cdev_register(void)

int oz_cdev_register(void)

{

{

	int err;

	int err;

	struct class *cl;

	struct device *dev;

	memset(&g_cdev, 0, sizeof(g_cdev));

	memset(&g_cdev, 0, sizeof(g_cdev));

	err = alloc_chrdev_region(&g_cdev.devnum, 0, 1, "ozwpan");

	err = alloc_chrdev_region(&g_cdev.devnum, 0, 1, "ozwpan");

	if (err < 0)

	if (err < 0)

		return err;

		goto out3;

	oz_trace("Alloc dev number %d:%d\n", MAJOR(g_cdev.devnum),

	oz_trace("Alloc dev number %d:%d\n", MAJOR(g_cdev.devnum),

			MINOR(g_cdev.devnum));

			MINOR(g_cdev.devnum));

	cdev_init(&g_cdev.cdev, &oz_fops);

	cdev_init(&g_cdev.cdev, &oz_fops);
@@ -342,7 +344,27 @@ int oz_cdev_register(void) 
	spin_lock_init(&g_cdev.lock);

	spin_lock_init(&g_cdev.lock);

	init_waitqueue_head(&g_cdev.rdq);

	init_waitqueue_head(&g_cdev.rdq);

	err = cdev_add(&g_cdev.cdev, g_cdev.devnum, 1);

	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;

	return 0;

out1:

	cdev_del(&g_cdev.cdev);

out2:

	unregister_chrdev_region(g_cdev.devnum, 1);

out3:

	return err;

}

}

/*------------------------------------------------------------------------------

/*------------------------------------------------------------------------------

 * Context: process

 * Context: process