Hi Sui, On Tue, May 30, 2023 at 12:21 PM Sui Jingfeng <suijingfeng@xxxxxxxxxxx> wrote: > As some arch(m68k for example) doesn't have config_pci enabled, drivers[1] > call pci_clear_master() without config_pci guard can not built. > > drivers/gpu/drm/etnaviv/etnaviv_pci_drv.c: > In function 'etnaviv_gpu_pci_fini': > >> drivers/gpu/drm/etnaviv/etnaviv_pci_drv.c:32:9: > error: implicit declaration of function 'pci_clear_master'; > did you mean 'pci_set_master'? [-Werror=implicit-function-declaration] > 32 | pci_clear_master(pdev); > | ^~~~~~~~~~~~~~~~ > | pci_set_master > cc1: some warnings being treated as errors > > [1] https://patchwork.freedesktop.org/patch/539977/?series=118522&rev=1 > > Reported-by: kernel test robot <lkp@xxxxxxxxx> > Closes: https://lore.kernel.org/oe-kbuild-all/202305301659.4guSLavL-lkp@xxxxxxxxx/ > Signed-off-by: Sui Jingfeng <suijingfeng@xxxxxxxxxxx> Thanks for your patch! > --- a/include/linux/pci.h > +++ b/include/linux/pci.h > @@ -1904,6 +1904,7 @@ static inline int pci_dev_present(const struct pci_device_id *ids) > #define pci_dev_put(dev) do { } while (0) > > static inline void pci_set_master(struct pci_dev *dev) { } > +static inline void pci_clear_master(struct pci_dev *dev) { } > static inline int pci_enable_device(struct pci_dev *dev) { return -EIO; } > static inline void pci_disable_device(struct pci_dev *dev) { } > static inline int pcim_enable_device(struct pci_dev *pdev) { return -EIO; } Makes perfect sense, given there has been a dummy for pci_set_master() since the git stone age. Apparently adding the dummy was forgotten when pci_clear_master() was introduced. Fixes: 6a479079c07211bf ("PCI: Add pci_clear_master() as opposite of pci_set_master()") Reviewed-by: Geert Uytterhoeven <geert@xxxxxxxxxxxxxx> Gr{oetje,eeting}s, Geert -- Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@xxxxxxxxxxxxxx In personal conversations with technical people, I call myself a hacker. But when I'm talking to journalists I just say "programmer" or something like that. -- Linus Torvalds
