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authorRupesh Gujare <rgujare@ozmodevices.com>2012-06-20 13:36:10 +0100
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2012-06-20 16:05:35 -0700
commit6261c1ee6c84290ff89cc2271b9ec634006e53b7 (patch)
treec31bfea0d2daba0493ff48f3eafbf19d2770b8ab /drivers/staging/ozwpan
parent00ec12b827d2f99202e0c9d804514aef2febf8d6 (diff)
downloadlinaro-lsk-6261c1ee6c84290ff89cc2271b9ec634006e53b7.tar.gz
staging: ozwpan: udev support
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>
Diffstat (limited to 'drivers/staging/ozwpan')
-rw-r--r--drivers/staging/ozwpan/ozcdev.c24
1 files changed, 23 insertions, 1 deletions
diff --git a/drivers/staging/ozwpan/ozcdev.c b/drivers/staging/ozwpan/ozcdev.c
index 27325f74ecd..929756abf02 100644
--- a/drivers/staging/ozwpan/ozcdev.c
+++ b/drivers/staging/ozwpan/ozcdev.c
@@ -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