HID: intel-ish-hid: Add match callback to ishtp bus type
authorHong Liu <hong.liu@intel.com>
Mon, 18 Mar 2019 19:14:19 +0000 (12:14 -0700)
committerJiri Kosina <jkosina@suse.cz>
Tue, 19 Mar 2019 10:57:23 +0000 (11:57 +0100)
commit6b3f75f75fdd225f8c5927b938c29bd24c21fc1b
tree9ffaea6deae505cae126d5cb2aec6103368ce7cc
parente19595fcabb5d09071b9ddb302be98715b77b1b9
HID: intel-ish-hid: Add match callback to ishtp bus type

Currently we depend on the guid check in ishtp_cl_driver.probe to match
the device and driver. However Linux device core first calls the match()
callback to decide the matching of driver and device, and then does some
preparation before calling the driver probe function. If we return error
in the driver probe, it needs to tear down all the preparation work and
retry with next driver.

Adding the match callback can avoid the unnecessary entry into unmatched
driver probe function for ishtp clients reported by FW.

Signed-off-by: Hong Liu <hong.liu@intel.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
drivers/hid/intel-ish-hid/ishtp-hid-client.c
drivers/hid/intel-ish-hid/ishtp/bus.c
drivers/hid/intel-ish-hid/ishtp/bus.h