PCI_DEV_PUT(9) Hardware Interfaces PCI_DEV_PUT(9)NAME
pci_dev_put - release a use of the pci device structure
SYNOPSIS
void pci_dev_put(struct pci_dev * dev);
ARGUMENTS
dev
device that's been disconnected
DESCRIPTION
Must be called when a user of a device is finished with it. When the last user of the device calls this function, the memory of the device
is freed.
COPYRIGHT Kernel Hackers Manual 3.10 June 2014 PCI_DEV_PUT(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 3.10 June 2014 DEVICE_CREATE(9)