HID: bpf: introduce hid_hw_request()

This function can not be called under IRQ, thus it is only available
while in SEC("syscall").
For consistency, this function requires a HID-BPF context to work with,
and so we also provide a helper to create one based on the HID unique
ID.

Reviewed-by: Greg Kroah-Hartman <[email protected]>
Signed-off-by: Benjamin Tissoires <[email protected]>

--

changes in v12:
- variable dereferenced before check 'ctx'
  |Reported-by: kernel test robot <[email protected]>
  |Reported-by: Dan Carpenter <[email protected]>

no changes in v11

no changes in v10

changes in v9:
- fixed kfunc declaration aaccording to latest upstream changes

no changes in v8

changes in v7:
- hid_bpf_allocate_context: remove unused variable
- ensures buf is not NULL

changes in v6:
- rename parameter size into buf__sz to teach the verifier about
  the actual buffer size used by the call
- remove the allocated data in the user created context, it's not used

new-ish in v5
Signed-off-by: Jiri Kosina <[email protected]>

0 files changed, 0 insertions, 0 deletions