USBA_HCDI_GET_DEVICE_PRIVATE(9F) Kernel Functions for Drivers
- get HCD per-device private value
SYNOPSIS #include <sys/usb/usba/hcdi.h> void * usba_hcdi_get_device_private
INTERFACE LEVEL Volatile -
illumos USB HCD private function
This is a private function that is not part of the stable DDI. It may be
removed or changed at any time.
Pointer to a USB device.
() function obtains the private data set by
a HCD driver. This private data is created by the HCD driver's optional
entry point usba_hcdi_device_init(9E)
and is removed during the HCD
driver's optional entry point usba_hcdi_device_fini(9E)
. If an HCD driver
does not implement these entry points then the value obtained by a call
will always be the null pointer, NULL.
The framework provides no form of locking of this data and it is up to the
HCD driver to use whatever synchronization primitives it requires if
() function is generally called from the
context of a usba_hcdi(9E)
entry point, but may be called from user,
kernel, or interrupt context.
The private data set by an HCD driver is always returned. If no such value
has been set, then NULL is returned.
SEE ALSO usba_hcdi(9E)
OmniOS May 7, 2016 OmniOS