Hi Gaosheng, On Mon, Dec 26, 2022 at 10:48 AM Gaosheng Cui <cuigaosheng1@xxxxxxxxxx> wrote: > When I am building the kernel on arm64, set config CONFIG_USB=m && > CONFIG_VIDEO_STKWEBCAM=y, I get some error reports as follows: > drivers/staging/media/deprecated/stkwebcam/stk-webcam.o: In > function `stk_v4l_dev_release': > stk-webcam.c:(.text+0x3e0): undefined reference to `usb_put_intf' > stk-webcam.c:(.text+0x3e8): undefined reference to `usb_put_dev' > drivers/staging/media/deprecated/stkwebcam/stk-webcam.o: In > function `stk_clean_iso': > stk-webcam.c:(.text+0xb0c): undefined reference to `usb_kill_urb' > stk-webcam.c:(.text+0xb14): undefined reference to `usb_free_urb' > > Fix it by add dependency option on USB for VIDEO_STKWEBCAM. > > Signed-off-by: Gaosheng Cui <cuigaosheng1@xxxxxxxxxx> Thanks for your patch! > --- a/drivers/staging/media/deprecated/stkwebcam/Kconfig > +++ b/drivers/staging/media/deprecated/stkwebcam/Kconfig > @@ -2,7 +2,7 @@ > config VIDEO_STKWEBCAM > tristate "USB Syntek DC1125 Camera support (DEPRECATED)" > depends on VIDEO_DEV > - depends on MEDIA_USB_SUPPORT && MEDIA_CAMERA_SUPPORT > + depends on USB && MEDIA_USB_SUPPORT && MEDIA_CAMERA_SUPPORT > help > Say Y here if you want to use this type of camera. > Supported devices are typically found in some Asus laptops, I think Arnd's patch[1] is better, as it also fixes the modular MEDIA_SUPPORT case. [1] "[PATCH] staging: media: stkwebcam: add USB dependency" https://lore.kernel.org/all/20230117165851.2300111-1-arnd@xxxxxxxxxx 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