On Tue, Sep 17, 2019 at 6:14 PM Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx> wrote: > > Famous last words. I now get a new warning: > > drivers/i2c/i2c-core-acpi.c:347:12: warning: > ‘i2c_acpi_find_match_adapter’ defined but not used [-Wunused-function] Commit 00500147cbd3 ("drivers: Introduce device lookup variants by ACPI_COMPANION device") removed the use of that matching function, but didn't remove the function. It also removed the use of i2c_acpi_find_match_device(), but in that case it _did_ remove the function. And apparently nobody bothers checking warnings. Tssk tssk. Linus