https://bugzilla.kernel.org/show_bug.cgi?id=215730 --- Comment #7 from Matthew Garrett (mjg59-kernel@xxxxxxxxxxxxx) --- acpi_bus_register_driver passes a set of supported ACPI device IDs to the kernel. In the case of toshiba_acpi, it's: {"TOS6200", 0}, {"TOS6207", 0}, {"TOS6208", 0}, {"TOS1900", 0}, If your firmware exposes any of these devices then the add method will be called. Your firmware doesn't expose any of them, and so it isn't. The driver simply doesn't support your hardware. What functionality on your system is not working? -- You may reply to this email to add a comment. You are receiving this mail because: You are watching the assignee of the bug.