On Fri, Aug 29, 2014 at 09:19:42AM -0700, Jim Davis wrote: > Building with the attached random configuration file, > > LD init/built-in.o > drivers/built-in.o: In function `technisat_usb2_set_voltage': > technisat-usb2.c:(.text+0x3b4919): undefined reference to `stv090x_set_gpio' > make: *** [vmlinux] Error 1 This is because MEDIA_SUBDRV_AUTOSELECT is designed to let you pick and choose, technically we should just have: diff --git a/drivers/media/usb/dvb-usb/Kconfig b/drivers/media/usb/dvb-usb/Kconfig index c5d9566..5a4e82e 100644 --- a/drivers/media/usb/dvb-usb/Kconfig +++ b/drivers/media/usb/dvb-usb/Kconfig @@ -313,7 +313,7 @@ config DVB_USB_AZ6027 config DVB_USB_TECHNISAT_USB2 tristate "Technisat DVB-S/S2 USB2.0 support" depends on DVB_USB - select DVB_STV090x if MEDIA_SUBDRV_AUTOSELECT + select DVB_STV090x select DVB_STV6110x if MEDIA_SUBDRV_AUTOSELECT help Say Y here to support the Technisat USB2 DVB-S/S2 device and that would fix the issue you saw but then again if we do that we might as well also do the same for DVB_STV6110x and a slew of different Kconfig entries on that file. Someone needs to make a judgement call and either fix all these Kconfig entries or document that MEDIA_SUBDRV_AUTOSELECT will let you shoot yourself in the foot at build time. Then what I recommend in the meantime is simply to not trust randomconfig builds unless you are always enabling MEDIA_SUBDRV_AUTOSELECT. I think its fair to expect for 'make randomconfig' to give you a configuration that lets you build things without issue so I see this more of an issue with MEDIA_SUBDRV_AUTOSELECT and this sloppy embedded craze. Luis -- To unsubscribe from this list: send the line "unsubscribe linux-media" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html