When CONFIG_PCI is disabled, we still provide a pci_get_bus_and_slot() function that always returns NULL, but do not provide the same helper for pci_get_domain_bus_and_slot(): Replacing pci_get_bus_and_slot with pci_get_domain_bus_and_slot now causes a build error because of that: drivers/hwmon/coretemp.c: In function 'adjust_tjmax': drivers/hwmon/coretemp.c:250:32: error: implicit declaration of function 'pci_get_domain_bus_and_slot'; did you mean 'pci_get_bus_and_slot'? [-Werror=implicit-function-declaration] struct pci_dev *host_bridge = pci_get_domain_bus_and_slot(0, 0, devfn); This adds the missing helper function. Fixes: 1630bd42079c ("hwmon: (coretemp) deprecate pci_get_bus_and_slot()") Cc: Sinan Kaya <okaya@xxxxxxxxxxxxxx> Cc: Guenter Roeck <linux@xxxxxxxxxxxx> Signed-off-by: Arnd Bergmann <arnd@xxxxxxxx> --- It would be good to get this into v4.15, in order to increase the chances of it still working after the conversion patches get merged during the v4.16 merge window. --- include/linux/pci.h | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/include/linux/pci.h b/include/linux/pci.h index a1589dec7e33..69815397365e 100644 --- a/include/linux/pci.h +++ b/include/linux/pci.h @@ -1660,6 +1660,10 @@ static inline struct pci_dev *pci_get_slot(struct pci_bus *bus, static inline struct pci_dev *pci_get_bus_and_slot(unsigned int bus, unsigned int devfn) { return NULL; } +static inline struct pci_dev *pci_get_domain_bus_and_slot(int domain, + unsigned int bus, + unsigned int devfn) +{ return NULL; } static inline int pci_domain_nr(struct pci_bus *bus) { return 0; } static inline struct pci_dev *pci_dev_get(struct pci_dev *dev) { return NULL; } -- 2.9.0