HID: pidff: Fix initialisation forMicrosoft Sidewinder FF Pro 2

The FF2 driver (usbhid/hid-pidff.c) sends commands to the stick during ff_init.
However, this is called inside a block where driver_input_lock is locked, so
the results of these initial commands are discarded. This behavior is the
"killer", without this nothing else works.

ff_init issues commands using "hid_hw_request". This eventually goes to
hid_input_report, which returns -EBUSY because driver_input_lock is locked. The
change is to delay the ff_init call in hid-core.c until after this lock has
been released.

Calling hid_device_io_start() releases the lock so the device can be
configured.  We also need to call hid_device_io_stop() on exit for the lock to
remain locked while ending the init of the drivers.

[ [email protected]: imrpoved the changelog a lot ]

Signed-off-by: Jim Keir <[email protected]>
Reviewed-by: Benjamin.tissoires <[email protected]>
Signed-off-by: Jiri Kosina <[email protected]>

0 files changed, 0 insertions, 0 deletions