From 6261c1ee6c84290ff89cc2271b9ec634006e53b7 Mon Sep 17 00:00:00 2001 From: Rupesh Gujare Date: Wed, 20 Jun 2012 13:36:10 +0100 Subject: [PATCH] staging: ozwpan: udev support Register ozmo_wpan class with sysfs & support for udev to create device node. Signed-off-by: Rupesh Gujare Signed-off-by: Greg Kroah-Hartman --- drivers/staging/ozwpan/ozcdev.c | 24 +++++++++++++++++++++++- 1 file changed, 23 insertions(+), 1 deletion(-) diff --git a/drivers/staging/ozwpan/ozcdev.c b/drivers/staging/ozwpan/ozcdev.c index 27325f74ecdc..929756abf02c 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 -- 2.39.5