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beceem: create class on module installation 

First step to supporting multiple devices, create device class
when module is initialized.

Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
This commit is contained in:
Stephen Hemminger 2010-11-01 10:17:54 -04:00
parent 46c3790eb5
commit 9e0a3169a3
2 changed files with 27 additions and 47 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

54
drivers/staging/bcm/Bcmchar.c
View File

@ -12,7 +12,7 @@
*
* Returns - Zero(Success)
****************************************************************/
static struct class *bcm_class = NULL;
static int bcm_char_open(struct inode *inode, struct file * filp)
{
PMINI_ADAPTER Adapter = NULL;
@ -2093,59 +2093,37 @@ static struct file_operations bcm_fops = {
.llseek = no_llseek,
};
extern struct class *bcm_class;
int register_control_device_interface(PMINI_ADAPTER Adapter)
{
if(Adapter->major>0)
return Adapter->major;
Adapter->major = register_chrdev(0, "tarang", &bcm_fops);
if(Adapter->major < 0)
{
BCM_DEBUG_PRINT(Adapter,DBG_TYPE_INITEXIT, DRV_ENTRY, DBG_LVL_ALL, "register_chrdev:Failed to registering WiMax control char device!");
Adapter->major = register_chrdev(0, DEV_NAME, &bcm_fops);
if(Adapter->major < 0) {
pr_err(DRV_NAME ": could not created character device\n");
return Adapter->major;
}
bcm_class = NULL;
bcm_class = class_create (THIS_MODULE, "tarang");
if(IS_ERR (bcm_class))
{
BCM_DEBUG_PRINT(Adapter,DBG_TYPE_INITEXIT, DRV_ENTRY, DBG_LVL_ALL, "Unable to create class\n");
unregister_chrdev(Adapter->major, "tarang");
Adapter->major = 0;
return -ENODEV;
}
Adapter->pstCreatedClassDevice = device_create (bcm_class, NULL,
MKDEV(Adapter->major, 0),
#if LINUX_VERSION_CODE > KERNEL_VERSION(2,6,26)
NULL ,
#endif
"tarang");
MKDEV(Adapter->major, 0), Adapter,
DEV_NAME);
if(IS_ERR(Adapter->pstCreatedClassDevice))
{
BCM_DEBUG_PRINT(Adapter,DBG_TYPE_INITEXIT, DRV_ENTRY, DBG_LVL_ALL, "class device did not get created : %ld", PTR_ERR(Adapter->pstCreatedClassDevice) );
if(IS_ERR(Adapter->pstCreatedClassDevice)) {
pr_err(DRV_NAME ": class device create failed\n");
unregister_chrdev(Adapter->major, DEV_NAME);
return PTR_ERR(Adapter->pstCreatedClassDevice);
}
BCM_DEBUG_PRINT(Adapter,DBG_TYPE_INITEXIT, DRV_ENTRY, DBG_LVL_ALL, "Got Major No: %d", Adapter->major);
return 0;
}
void unregister_control_device_interface(PMINI_ADAPTER Adapter)
{
if(Adapter->major > 0)
{
BCM_DEBUG_PRINT(Adapter,DBG_TYPE_INITEXIT, DRV_ENTRY, DBG_LVL_ALL, "destroying class device");
if(Adapter->major > 0) {
device_destroy (bcm_class, MKDEV(Adapter->major, 0));
unregister_chrdev(Adapter->major, DEV_NAME);
}
if(!IS_ERR(bcm_class))
{
BCM_DEBUG_PRINT(Adapter,DBG_TYPE_INITEXIT, DRV_ENTRY, DBG_LVL_ALL, "destroying created class ");
class_destroy (bcm_class);
bcm_class = NULL;
}
if(Adapter->major > 0)
{
BCM_DEBUG_PRINT(Adapter,DBG_TYPE_INITEXIT, DRV_ENTRY, DBG_LVL_ALL,"unregistering character interface");
unregister_chrdev(Adapter->major, "tarang");
}
}

14
drivers/staging/bcm/InterfaceInit.c
View File

@ -738,6 +738,7 @@ static struct usb_driver usbbcm_driver = {
.supports_autosuspend = 1,
};
struct class *bcm_class;
/*
Function: InterfaceInitialize
@ -755,16 +756,17 @@ Return: BCM_STATUS_SUCCESS - If Initialization of the
*/
INT InterfaceInitialize(void)
{
// BCM_DEBUG_PRINT(Adapter,DBG_TYPE_INITEXIT, DRV_ENTRY, DBG_LVL_ALL, "Registering Usb driver!!");
bcm_class = class_create(THIS_MODULE, DRV_NAME);
if (IS_ERR(bcm_class)) {
printk(KERN_ERR DRV_NAME ": could not create class\n");
return PTR_ERR(bcm_class);
}
return usb_register(&usbbcm_driver);
}
INT InterfaceExit(void)
{
//PMINI_ADAPTER psAdapter = NULL;
int status = 0;
//BCM_DEBUG_PRINT(Adapter,DBG_TYPE_INITEXIT, DRV_ENTRY, DBG_LVL_ALL, "Deregistering Usb driver!!");
class_destroy (bcm_class);
usb_deregister(&usbbcm_driver);
return status;
return 0;
}