DEV_ALLOC_NAME(9) Network device support DEV_ALLOC_NAME(9)NAME
dev_alloc_name - allocate a name for a device
SYNOPSIS
int dev_alloc_name(struct net_device * dev, const char * name);
ARGUMENTS
dev
device
name
name format string
DESCRIPTION
Passed a format string - eg "ltd" it will try and find a suitable id. It scans list of devices to build up a free map, then chooses the
first empty slot. The caller must hold the dev_base or rtnl lock while allocating the name and adding the device in order to avoid
duplicates. Limited to bits_per_byte * page size devices (ie 32K on most platforms). Returns the number of the unit assigned or a negative
errno code.
COPYRIGHT Kernel Hackers Manual 2.6. July 2010 DEV_ALLOC_NAME(9)
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DEVICE_CREATE(9) Device drivers infrastructure DEVICE_CREATE(9)NAME
device_create - creates a device and registers it with sysfs
SYNOPSIS
struct device * device_create(struct class * class, struct device * parent, dev_t devt, void * drvdata, const char * fmt, ...);
ARGUMENTS
class
pointer to the struct class that this device should be registered to
parent
pointer to the parent struct device of this new device, if any
devt
the dev_t for the char device to be added
drvdata
the data to be added to the device for callbacks
fmt
string for the device's name
...
variable arguments
DESCRIPTION
This function can be used by char device classes. A struct device will be created in sysfs, registered to the specified class.
A "dev" file will be created, showing the dev_t for the device, if the dev_t is not 0,0. If a pointer to a parent struct device is passed
in, the newly created struct device will be a child of that device in sysfs. The pointer to the struct device will be returned from the
call. Any further sysfs files that might be required can be created using this pointer.
Returns struct device pointer on success, or ERR_PTR on error.
NOTE
the struct class passed to this function must have previously been created with a call to class_create.
COPYRIGHT Kernel Hackers Manual 2.6. July 2010 DEVICE_CREATE(9)