DEVICE_CREATE_VARGS - Online Linux Manual PageSection : 9
Updated : June 2018
Source : Kernel Hackers Manual 2​.6​.
Note : Device drivers infrastructure

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NAMEdevice_create_vargs − creates a device and registers it with sysfs

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SYNOPSISstruct device * device_create_vargs(struct class * class, struct device * parent, dev_t devt, void * drvdata, const char * fmt, va_list args);

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ARGUMENTSclass 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 args va_list for the device´s name

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DESCRIPTIONThis 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​.

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NOTEthe struct class passed to this function must have previously been created with a call to class_create​.

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