The kbuild test robot reports the following build errors for x86_64-randconfig-c1-0407: All error/warnings: net/built-in.o: In function `wiphy_new': >> (.text+0x7684c): undefined reference to `rfkill_alloc' net/built-in.o: In function `wiphy_rfkill_start_polling': >> (.text+0x76da4): undefined reference to `rfkill_resume_polling' net/built-in.o: In function `wiphy_rfkill_stop_polling': >> (.text+0x76de9): undefined reference to `rfkill_pause_polling' net/built-in.o: In function `wiphy_unregister': >> (.text+0x76ec9): undefined reference to `rfkill_unregister' net/built-in.o: In function `wiphy_rfkill_set_hw_state': >> (.text+0x771bc): undefined reference to `rfkill_set_hw_state' net/built-in.o: In function `wiphy_register': >> (.text+0x77968): undefined reference to `rfkill_register' net/built-in.o: In function `wiphy_register': >> (.text+0x77981): undefined reference to `rfkill_destroy' net/built-in.o: In function `cfg80211_rfkill_sync_work': >> core.c:(.text+0x788ad): undefined reference to `rfkill_blocked' net/built-in.o: In function `cfg80211_dev_free': >> (.text+0x78a7b): undefined reference to `rfkill_destroy' net/built-in.o: In function `cfg80211_netdev_notifier_call': >> core.c:(.text+0x79203): undefined reference to `rfkill_blocked' net/built-in.o: In function `nl80211_start_p2p_device': These undefined sysbols are all satisfied if a "select RFKILL" is added to Kconfig. This "fix" leads to another problem as follows: >> nl80211.c:(.text+0x9032e): undefined reference to `rfkill_blocked' net/rfkill/Kconfig:4:error: recursive dependency detected! net/rfkill/Kconfig:4: symbol RFKILL is selected by R8723AU drivers/staging/rtl8723au/Kconfig:1: symbol R8723AU depends on USB drivers/usb/Kconfig:41: symbol USB is selected by MOUSE_APPLETOUCH drivers/input/mouse/Kconfig:162: symbol MOUSE_APPLETOUCH depends on INPUT drivers/input/Kconfig:8: symbol INPUT is selected by ACPI_CMPC drivers/platform/x86/Kconfig:635: symbol ACPI_CMPC depends on RFKILL To avoid substituting one build error for another, I added a "depends on RFKILL". My suspicion is that this particular error is caused by a kbuild bug, or that the selection of INPUT by ACPI_CMPC is wrong. In any case, that will be solved separately. Reported-by: kbuild test robot <fengguang.wu@xxxxxxxxx> Signed-off-by: Larry Finger <Larry.Finger@xxxxxxxxxxxx> Cc: Jes Sorensen <Jes.Sorensen@xxxxxxxxxx> Cc: kbuild-all@xxxxxx --- drivers/staging/rtl8723au/Kconfig | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/staging/rtl8723au/Kconfig b/drivers/staging/rtl8723au/Kconfig index 78e8805..07fb5e4 100644 --- a/drivers/staging/rtl8723au/Kconfig +++ b/drivers/staging/rtl8723au/Kconfig @@ -1,6 +1,6 @@ config R8723AU tristate "Realtek RTL8723AU Wireless LAN NIC driver" - depends on WLAN && USB + depends on USB && WLAN && RFKILL select WIRELESS_EXT select WEXT_PRIV select CFG80211 -- 1.8.1.4 _______________________________________________ devel mailing list devel@xxxxxxxxxxxxxxxxxxxxxx http://driverdev.linuxdriverproject.org/mailman/listinfo/driverdev-devel