HID: multitouch: fix LG Melfas touchscreen
The LG Melfas touchscreen has a bad firmware where it declares the Contact ID field as constant while it shouldn't. This messes up the autodetection and the reporting of the events by hid-multitouch given that hid-input ignores constant fields. The autodetection is simply worked around by manually adding the device to hid_have_special_driver[]. The processing of the events requires either a report fixup, or some specific case handling. Given that the report fixup would require to basically rewrite all the report descriptor, I went for the programatic way of fixing that after the report descriptors are loaded. Link: https://bugzilla.redhat.com/show_bug.cgi?id=1416181Signed-off-by:Benjamin Tissoires <benjamin.tissoires@redhat.com> Signed-off-by:
Jiri Kosina <jkosina@suse.cz>
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