DEVICE_CREATE

Section: Device drivers infrastructure (9)
Updated: February 2011
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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 lqdevrq 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