Hi Greg, After merging the usb tree, today's linux-next build (x86_64 allmodconfig) failed like this: drivers/usb/core/usb-acpi.c: In function 'usb_acpi_register_power_resources': drivers/usb/core/usb-acpi.c:226:2: error: implicit declaration of function 'acpi_power_resource_register_device' [-Werror=implicit-function-declaration] drivers/usb/core/usb-acpi.c: In function 'usb_acpi_unregister_power_resources': drivers/usb/core/usb-acpi.c:234:3: error: implicit declaration of function 'acpi_power_resource_unregister_device' [-Werror=implicit-function-declaration] Caused by commit 88bb965ed711 ("usb: Register usb port's acpi power resources"). I have used the usb tree from next-20130125 for today. -- Cheers, Stephen Rothwell sfr@canb.auug.org.au