4 Mar
2022
4 Mar
'22
6:32 p.m.
On Fri, Mar 04, 2022 at 06:28:31PM +0100, Benjamin Tissoires wrote:
The report descriptor is the dictionary of the HID protocol specific to the given device. Changing it is a common habit in the HID world, and making that feature accessible from eBPF allows to fix devices without having to install a new kernel.
However, the report descriptor is supposed to be static on a device. To be able to change it, we need to reconnect the device at the HID level. So whenever the report descriptor program type is attached or detached, we call on a hook on HID to notify it that there is something to be done.
Signed-off-by: Benjamin Tissoires benjamin.tissoires@redhat.com
Reviewed-by: Greg Kroah-Hartman gregkh@linuxfoundation.org