1 What: /sys/bus/vmbus/devices/.../dri 1 What: /sys/bus/vmbus/devices/.../driver_override
2 Date: August 2019 2 Date: August 2019
3 Contact: Stephen Hemminger <sthemmin@mic 3 Contact: Stephen Hemminger <sthemmin@microsoft.com>
4 Description: 4 Description:
5 This file allows the driver fo 5 This file allows the driver for a device to be specified which
6 will override standard static 6 will override standard static and dynamic ID matching. When
7 specified, only a driver with 7 specified, only a driver with a name matching the value written
8 to driver_override will have a 8 to driver_override will have an opportunity to bind to the
9 device. The override is speci 9 device. The override is specified by writing a string to the
10 driver_override file (echo uio 10 driver_override file (echo uio_hv_generic > driver_override) and
11 may be cleared with an empty s 11 may be cleared with an empty string (echo > driver_override).
12 This returns the device to sta 12 This returns the device to standard matching rules binding.
13 Writing to driver_override doe 13 Writing to driver_override does not automatically unbind the
14 device from its current driver 14 device from its current driver or make any attempt to
15 automatically load the specifi 15 automatically load the specified driver. If no driver with a
16 matching name is currently loa 16 matching name is currently loaded in the kernel, the device
17 will not bind to any driver. 17 will not bind to any driver. This also allows devices to
18 opt-out of driver binding usin 18 opt-out of driver binding using a driver_override name such as
19 "none". Only a single driver 19 "none". Only a single driver may be specified in the override,
20 there is no support for parsin 20 there is no support for parsing delimiters.
21 21
Linux® is a registered trademark of Linus Torvalds in the United States and other countries.
TOMOYO® is a registered trademark of NTT DATA CORPORATION.