According to commit on github, the elan0615 might be supported in kernel 5.1
Further the elan_isr interrupt service routine got modified. So maybe it is the end of "elan_i2c i2c-ELAN0615:01: invalid report id data (ff)"
https://github.com/torvalds/linux/commit/738c06d0e4562e0acf9f2c7438a22b2d5afc67aa#diff-f034d1fd2873201ba5f82d0156414932
According to commit on github, the elan0615 might be supported in kernel 5.1
Further the elan_isr interrupt service routine got modified. So maybe it is the end of "elan_i2c i2c-ELAN0615:01: invalid report id data (ff)"
https:/ /github. com/torvalds/ linux/commit/ 738c06d0e4562e0 acf9f2c7438a22b 2d5afc67aa# diff-f034d1fd28 73201ba5f82d015 6414932