Re: [PATCH 2/5] kbuild: treat a directory listed in a composite object as foo/mod.a

From: NeilBrown
Date: Mon Jun 18 2018 - 18:31:13 EST

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In reply to: kbuild test robot: "Re: [PATCH 2/5] kbuild: treat a directory listed in a composite object as foo/mod.a"
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On Mon, Jun 18 2018, kbuild test robot wrote:

> Hi NeilBrown,
>
> Thank you for the patch! Yet something to improve:

Thank you for your testing and problem report! Yet something to improve:-)

This bug is caused by the combination CONFIG_MISDN_HFCUSB=y and CONFIG_MISDN=m
and appears to have nothing to do with my patch.
I suspect drivers/isdn/hardware/mISDN/Kconfig needs

@@ -35,6 +35,7 @@ config MISDN_HFCMULTI_8xx
config MISDN_HFCUSB
tristate "Support for HFC-S USB based TAs"
depends on USB
+ depends on MISDN
help
Enable support for USB ISDN TAs with Cologne Chip AG's
HFC-S USB ISDN Controller

or similar.

Thanks,
NeilBrown

(config file excerpt for Karsten:
CONFIG_MISDN=m
CONFIG_MISDN_DSP=m
CONFIG_MISDN_L1OIP=m
CONFIG_MISDN_HFCPCI=m
# CONFIG_MISDN_HFCMULTI is not set
CONFIG_MISDN_HFCUSB=y
CONFIG_MISDN_AVMFRITZ=m
CONFIG_MISDN_SPEEDFAX=m
CONFIG_MISDN_INFINEON=m
CONFIG_MISDN_W6692=m
# CONFIG_MISDN_NETJET is not set
CONFIG_MISDN_IPAC=m
CONFIG_MISDN_ISAR=m
)

>
> [auto build test ERROR on kbuild/for-next]
> [also build test ERROR on v4.18-rc1 next-20180618]
> [cannot apply to mmarek/for-next mmarek/rc-fixes]
> [if your patch is applied to the wrong git tree, please drop us a note to help improve the system]
>
> url: https://github.com/0day-ci/linux/commits/NeilBrown/kbuild-build-modules-from-code-in-multiple-directories/20180618-130250
> base: https://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild.git for-next
> config: x86_64-randconfig-in0-06170623 (attached as .config)
> compiler: gcc-7 (Debian 7.3.0-16) 7.3.0
> reproduce:
> # save the attached .config to linux build tree
> make ARCH=x86_64
>
> All errors (new ones prefixed by >>):
>
> drivers/isdn/hardware/mISDN/hfcsusb.o: In function `release_hw':
>>> drivers/isdn/hardware/mISDN/hfcsusb.c:1757: undefined reference to `l1_event'
>>> drivers/isdn/hardware/mISDN/hfcsusb.c:1759: undefined reference to `mISDN_unregister_device'
>>> drivers/isdn/hardware/mISDN/hfcsusb.c:1760: undefined reference to `mISDN_freebchannel'
> drivers/isdn/hardware/mISDN/hfcsusb.c:1761: undefined reference to `mISDN_freebchannel'
>>> drivers/isdn/hardware/mISDN/hfcsusb.c:1762: undefined reference to `mISDN_freedchannel'
> drivers/isdn/hardware/mISDN/hfcsusb.o: In function `deactivate_bchannel':
>>> drivers/isdn/hardware/mISDN/hfcsusb.c:1788: undefined reference to `mISDN_clear_bchannel'
> drivers/isdn/hardware/mISDN/hfcsusb.o: In function `ph_state_te':
> drivers/isdn/hardware/mISDN/hfcsusb.c:611: undefined reference to `l1_event'
> drivers/isdn/hardware/mISDN/hfcsusb.o: In function `channel_bctrl':
>>> drivers/isdn/hardware/mISDN/hfcsusb.c:808: undefined reference to `mISDN_ctrl_bchannel'
> drivers/isdn/hardware/mISDN/hfcsusb.o: In function `tx_iso_complete':
>>> drivers/isdn/hardware/mISDN/hfcsusb.c:1345: undefined reference to `get_next_dframe'
>>> drivers/isdn/hardware/mISDN/hfcsusb.c:1348: undefined reference to `get_next_bframe'
> drivers/isdn/hardware/mISDN/hfcsusb.o: In function `hfcsusb_rx_frame':
>>> drivers/isdn/hardware/mISDN/hfcsusb.c:850: undefined reference to `bchannel_get_rxbuf'
>>> drivers/isdn/hardware/mISDN/hfcsusb.c:919: undefined reference to `recv_Dchannel'
>>> drivers/isdn/hardware/mISDN/hfcsusb.c:921: undefined reference to `recv_Bchannel'
>>> drivers/isdn/hardware/mISDN/hfcsusb.c:924: undefined reference to `recv_Echannel'
> drivers/isdn/hardware/mISDN/hfcsusb.c:943: undefined reference to `recv_Bchannel'
> drivers/isdn/hardware/mISDN/hfcsusb.o: In function `hfcusb_l2l1D':
>>> drivers/isdn/hardware/mISDN/hfcsusb.c:301: undefined reference to `dchannel_senddata'
>>> drivers/isdn/hardware/mISDN/hfcsusb.c:305: undefined reference to `queue_ch_frame'
> drivers/isdn/hardware/mISDN/hfcsusb.c:360: undefined reference to `l1_event'
> drivers/isdn/hardware/mISDN/hfcsusb.o: In function `setup_instance':
>>> drivers/isdn/hardware/mISDN/hfcsusb.c:1843: undefined reference to `mISDN_initdchannel'
> drivers/isdn/hardware/mISDN/hfcsusb.c:1852: undefined reference to `mISDN_initdchannel'
>>> drivers/isdn/hardware/mISDN/hfcsusb.c:1861: undefined reference to `mISDN_initbchannel'
>>> drivers/isdn/hardware/mISDN/hfcsusb.c:1887: undefined reference to `mISDN_register_device'
> drivers/isdn/hardware/mISDN/hfcsusb.c:1898: undefined reference to `mISDN_freebchannel'
> drivers/isdn/hardware/mISDN/hfcsusb.c:1899: undefined reference to `mISDN_freebchannel'
> drivers/isdn/hardware/mISDN/hfcsusb.c:1900: undefined reference to `mISDN_freedchannel'
> drivers/isdn/hardware/mISDN/hfcsusb.o: In function `hfcusb_l2l1B':
>>> drivers/isdn/hardware/mISDN/hfcsusb.c:224: undefined reference to `bchannel_senddata'
> drivers/isdn/hardware/mISDN/hfcsusb.o: In function `open_dchannel':
>>> drivers/isdn/hardware/mISDN/hfcsusb.c:454: undefined reference to `create_l1'
>
> vim +1757 drivers/isdn/hardware/mISDN/hfcsusb.c
>
> 69f52adb Karsten Keil 2009-01-09 1739
> 69f52adb Karsten Keil 2009-01-09 1740 static void
> 69f52adb Karsten Keil 2009-01-09 1741 release_hw(struct hfcsusb *hw)
> 69f52adb Karsten Keil 2009-01-09 1742 {
> 69f52adb Karsten Keil 2009-01-09 1743 if (debug & DBG_HFC_CALL_TRACE)
> 69f52adb Karsten Keil 2009-01-09 1744 printk(KERN_DEBUG "%s: %s\n", hw->name, __func__);
> 69f52adb Karsten Keil 2009-01-09 1745
> 69f52adb Karsten Keil 2009-01-09 1746 /*
> 69f52adb Karsten Keil 2009-01-09 1747 * stop all endpoints gracefully
> 69f52adb Karsten Keil 2009-01-09 1748 * TODO: mISDN_core should generate CLOSE_CHANNEL
> 69f52adb Karsten Keil 2009-01-09 1749 * signals after calling mISDN_unregister_device()
> 69f52adb Karsten Keil 2009-01-09 1750 */
> 69f52adb Karsten Keil 2009-01-09 1751 hfcsusb_stop_endpoint(hw, HFC_CHAN_D);
> 69f52adb Karsten Keil 2009-01-09 1752 hfcsusb_stop_endpoint(hw, HFC_CHAN_B1);
> 69f52adb Karsten Keil 2009-01-09 1753 hfcsusb_stop_endpoint(hw, HFC_CHAN_B2);
> 69f52adb Karsten Keil 2009-01-09 1754 if (hw->fifos[HFCUSB_PCM_RX].pipe)
> 69f52adb Karsten Keil 2009-01-09 1755 hfcsusb_stop_endpoint(hw, HFC_CHAN_E);
> 69f52adb Karsten Keil 2009-01-09 1756 if (hw->protocol == ISDN_P_TE_S0)
> 69f52adb Karsten Keil 2009-01-09 @1757 l1_event(hw->dch.l1, CLOSE_CHANNEL);
> 69f52adb Karsten Keil 2009-01-09 1758
> 69f52adb Karsten Keil 2009-01-09 @1759 mISDN_unregister_device(&hw->dch.dev);
> 69f52adb Karsten Keil 2009-01-09 @1760 mISDN_freebchannel(&hw->bch[1]);
> 69f52adb Karsten Keil 2009-01-09 @1761 mISDN_freebchannel(&hw->bch[0]);
> 69f52adb Karsten Keil 2009-01-09 @1762 mISDN_freedchannel(&hw->dch);
> 69f52adb Karsten Keil 2009-01-09 1763
> 69f52adb Karsten Keil 2009-01-09 1764 if (hw->ctrl_urb) {
> 69f52adb Karsten Keil 2009-01-09 1765 usb_kill_urb(hw->ctrl_urb);
> 69f52adb Karsten Keil 2009-01-09 1766 usb_free_urb(hw->ctrl_urb);
> 69f52adb Karsten Keil 2009-01-09 1767 hw->ctrl_urb = NULL;
> 69f52adb Karsten Keil 2009-01-09 1768 }
> 69f52adb Karsten Keil 2009-01-09 1769
> 69f52adb Karsten Keil 2009-01-09 1770 if (hw->intf)
> 69f52adb Karsten Keil 2009-01-09 1771 usb_set_intfdata(hw->intf, NULL);
> 69f52adb Karsten Keil 2009-01-09 1772 list_del(&hw->list);
> 69f52adb Karsten Keil 2009-01-09 1773 kfree(hw);
> 69f52adb Karsten Keil 2009-01-09 1774 hw = NULL;
> 69f52adb Karsten Keil 2009-01-09 1775 }
> 69f52adb Karsten Keil 2009-01-09 1776
> 69f52adb Karsten Keil 2009-01-09 1777 static void
> 69f52adb Karsten Keil 2009-01-09 1778 deactivate_bchannel(struct bchannel *bch)
> 69f52adb Karsten Keil 2009-01-09 1779 {
> 69f52adb Karsten Keil 2009-01-09 1780 struct hfcsusb *hw = bch->hw;
> 69f52adb Karsten Keil 2009-01-09 1781 u_long flags;
> 69f52adb Karsten Keil 2009-01-09 1782
> 69f52adb Karsten Keil 2009-01-09 1783 if (bch->debug & DEBUG_HW)
> 69f52adb Karsten Keil 2009-01-09 1784 printk(KERN_DEBUG "%s: %s: bch->nr(%i)\n",
> 69f52adb Karsten Keil 2009-01-09 1785 hw->name, __func__, bch->nr);
> 69f52adb Karsten Keil 2009-01-09 1786
> 69f52adb Karsten Keil 2009-01-09 1787 spin_lock_irqsave(&hw->lock, flags);
> fb286f04 Karsten Keil 2009-07-09 @1788 mISDN_clear_bchannel(bch);
> 69f52adb Karsten Keil 2009-01-09 1789 spin_unlock_irqrestore(&hw->lock, flags);
> 69f52adb Karsten Keil 2009-01-09 1790 hfcsusb_setup_bch(bch, ISDN_P_NONE);
> 37952cfa Martin Bachem 2012-05-15 1791 hfcsusb_stop_endpoint(hw, bch->nr - 1);
> 69f52adb Karsten Keil 2009-01-09 1792 }
> 69f52adb Karsten Keil 2009-01-09 1793
> 69f52adb Karsten Keil 2009-01-09 1794 /*
> 69f52adb Karsten Keil 2009-01-09 1795 * Layer 1 B-channel hardware access
> 69f52adb Karsten Keil 2009-01-09 1796 */
> 69f52adb Karsten Keil 2009-01-09 1797 static int
> 69f52adb Karsten Keil 2009-01-09 1798 hfc_bctrl(struct mISDNchannel *ch, u_int cmd, void *arg)
> 69f52adb Karsten Keil 2009-01-09 1799 {
> 69f52adb Karsten Keil 2009-01-09 1800 struct bchannel *bch = container_of(ch, struct bchannel, ch);
> 69f52adb Karsten Keil 2009-01-09 1801 int ret = -EINVAL;
> 69f52adb Karsten Keil 2009-01-09 1802
> 69f52adb Karsten Keil 2009-01-09 1803 if (bch->debug & DEBUG_HW)
> 69f52adb Karsten Keil 2009-01-09 1804 printk(KERN_DEBUG "%s: cmd:%x %p\n", __func__, cmd, arg);
> 69f52adb Karsten Keil 2009-01-09 1805
> 69f52adb Karsten Keil 2009-01-09 1806 switch (cmd) {
> 69f52adb Karsten Keil 2009-01-09 1807 case HW_TESTRX_RAW:
> 69f52adb Karsten Keil 2009-01-09 1808 case HW_TESTRX_HDLC:
> 69f52adb Karsten Keil 2009-01-09 1809 case HW_TESTRX_OFF:
> 69f52adb Karsten Keil 2009-01-09 1810 ret = -EINVAL;
> 69f52adb Karsten Keil 2009-01-09 1811 break;
> 69f52adb Karsten Keil 2009-01-09 1812
> 69f52adb Karsten Keil 2009-01-09 1813 case CLOSE_CHANNEL:
> 69f52adb Karsten Keil 2009-01-09 1814 test_and_clear_bit(FLG_OPEN, &bch->Flags);
> 69f52adb Karsten Keil 2009-01-09 1815 deactivate_bchannel(bch);
> 69f52adb Karsten Keil 2009-01-09 1816 ch->protocol = ISDN_P_NONE;
> 69f52adb Karsten Keil 2009-01-09 1817 ch->peer = NULL;
> 69f52adb Karsten Keil 2009-01-09 1818 module_put(THIS_MODULE);
> 69f52adb Karsten Keil 2009-01-09 1819 ret = 0;
> 69f52adb Karsten Keil 2009-01-09 1820 break;
> 69f52adb Karsten Keil 2009-01-09 1821 case CONTROL_CHANNEL:
> 69f52adb Karsten Keil 2009-01-09 1822 ret = channel_bctrl(bch, arg);
> 69f52adb Karsten Keil 2009-01-09 1823 break;
> 69f52adb Karsten Keil 2009-01-09 1824 default:
> 69f52adb Karsten Keil 2009-01-09 1825 printk(KERN_WARNING "%s: unknown prim(%x)\n",
> 69f52adb Karsten Keil 2009-01-09 1826 __func__, cmd);
> 69f52adb Karsten Keil 2009-01-09 1827 }
> 69f52adb Karsten Keil 2009-01-09 1828 return ret;
> 69f52adb Karsten Keil 2009-01-09 1829 }
> 69f52adb Karsten Keil 2009-01-09 1830
> 69f52adb Karsten Keil 2009-01-09 1831 static int
> 69f52adb Karsten Keil 2009-01-09 1832 setup_instance(struct hfcsusb *hw, struct device *parent)
> 69f52adb Karsten Keil 2009-01-09 1833 {
> 69f52adb Karsten Keil 2009-01-09 1834 u_long flags;
> 69f52adb Karsten Keil 2009-01-09 1835 int err, i;
> 69f52adb Karsten Keil 2009-01-09 1836
> 69f52adb Karsten Keil 2009-01-09 1837 if (debug & DBG_HFC_CALL_TRACE)
> 69f52adb Karsten Keil 2009-01-09 1838 printk(KERN_DEBUG "%s: %s\n", hw->name, __func__);
> 69f52adb Karsten Keil 2009-01-09 1839
> 69f52adb Karsten Keil 2009-01-09 1840 spin_lock_init(&hw->ctrl_lock);
> 69f52adb Karsten Keil 2009-01-09 1841 spin_lock_init(&hw->lock);
> 69f52adb Karsten Keil 2009-01-09 1842
> 69f52adb Karsten Keil 2009-01-09 @1843 mISDN_initdchannel(&hw->dch, MAX_DFRAME_LEN_L1, ph_state);
> 69f52adb Karsten Keil 2009-01-09 1844 hw->dch.debug = debug & 0xFFFF;
> 69f52adb Karsten Keil 2009-01-09 1845 hw->dch.hw = hw;
> 69f52adb Karsten Keil 2009-01-09 1846 hw->dch.dev.Dprotocols = (1 << ISDN_P_TE_S0) | (1 << ISDN_P_NT_S0);
> 69f52adb Karsten Keil 2009-01-09 1847 hw->dch.dev.D.send = hfcusb_l2l1D;
> 69f52adb Karsten Keil 2009-01-09 1848 hw->dch.dev.D.ctrl = hfc_dctrl;
> 69f52adb Karsten Keil 2009-01-09 1849
> 69f52adb Karsten Keil 2009-01-09 1850 /* enable E-Channel logging */
> 69f52adb Karsten Keil 2009-01-09 1851 if (hw->fifos[HFCUSB_PCM_RX].pipe)
> 69f52adb Karsten Keil 2009-01-09 @1852 mISDN_initdchannel(&hw->ech, MAX_DFRAME_LEN_L1, NULL);
> 69f52adb Karsten Keil 2009-01-09 1853
> 69f52adb Karsten Keil 2009-01-09 1854 hw->dch.dev.Bprotocols = (1 << (ISDN_P_B_RAW & ISDN_P_B_MASK)) |
> 69f52adb Karsten Keil 2009-01-09 1855 (1 << (ISDN_P_B_HDLC & ISDN_P_B_MASK));
> 69f52adb Karsten Keil 2009-01-09 1856 hw->dch.dev.nrbchan = 2;
> 69f52adb Karsten Keil 2009-01-09 1857 for (i = 0; i < 2; i++) {
> 69f52adb Karsten Keil 2009-01-09 1858 hw->bch[i].nr = i + 1;
> 69f52adb Karsten Keil 2009-01-09 1859 set_channelmap(i + 1, hw->dch.dev.channelmap);
> 69f52adb Karsten Keil 2009-01-09 1860 hw->bch[i].debug = debug;
> 034005a0 Karsten Keil 2012-05-15 @1861 mISDN_initbchannel(&hw->bch[i], MAX_DATA_MEM, poll >> 1);
> 69f52adb Karsten Keil 2009-01-09 1862 hw->bch[i].hw = hw;
> 69f52adb Karsten Keil 2009-01-09 1863 hw->bch[i].ch.send = hfcusb_l2l1B;
> 69f52adb Karsten Keil 2009-01-09 1864 hw->bch[i].ch.ctrl = hfc_bctrl;
> 69f52adb Karsten Keil 2009-01-09 1865 hw->bch[i].ch.nr = i + 1;
> 69f52adb Karsten Keil 2009-01-09 1866 list_add(&hw->bch[i].ch.list, &hw->dch.dev.bchannels);
> 69f52adb Karsten Keil 2009-01-09 1867 }
> 69f52adb Karsten Keil 2009-01-09 1868
> 69f52adb Karsten Keil 2009-01-09 1869 hw->fifos[HFCUSB_B1_TX].bch = &hw->bch[0];
> 69f52adb Karsten Keil 2009-01-09 1870 hw->fifos[HFCUSB_B1_RX].bch = &hw->bch[0];
> 69f52adb Karsten Keil 2009-01-09 1871 hw->fifos[HFCUSB_B2_TX].bch = &hw->bch[1];
> 69f52adb Karsten Keil 2009-01-09 1872 hw->fifos[HFCUSB_B2_RX].bch = &hw->bch[1];
> 69f52adb Karsten Keil 2009-01-09 1873 hw->fifos[HFCUSB_D_TX].dch = &hw->dch;
> 69f52adb Karsten Keil 2009-01-09 1874 hw->fifos[HFCUSB_D_RX].dch = &hw->dch;
> 69f52adb Karsten Keil 2009-01-09 1875 hw->fifos[HFCUSB_PCM_RX].ech = &hw->ech;
> 69f52adb Karsten Keil 2009-01-09 1876 hw->fifos[HFCUSB_PCM_TX].ech = &hw->ech;
> 69f52adb Karsten Keil 2009-01-09 1877
> 69f52adb Karsten Keil 2009-01-09 1878 err = setup_hfcsusb(hw);
> 69f52adb Karsten Keil 2009-01-09 1879 if (err)
> 69f52adb Karsten Keil 2009-01-09 1880 goto out;
> 69f52adb Karsten Keil 2009-01-09 1881
> 69f52adb Karsten Keil 2009-01-09 1882 snprintf(hw->name, MISDN_MAX_IDLEN - 1, "%s.%d", DRIVER_NAME,
> 69f52adb Karsten Keil 2009-01-09 1883 hfcsusb_cnt + 1);
> 69f52adb Karsten Keil 2009-01-09 1884 printk(KERN_INFO "%s: registered as '%s'\n",
> 69f52adb Karsten Keil 2009-01-09 1885 DRIVER_NAME, hw->name);
> 69f52adb Karsten Keil 2009-01-09 1886
> 69f52adb Karsten Keil 2009-01-09 @1887 err = mISDN_register_device(&hw->dch.dev, parent, hw->name);
> 69f52adb Karsten Keil 2009-01-09 1888 if (err)
> 69f52adb Karsten Keil 2009-01-09 1889 goto out;
> 69f52adb Karsten Keil 2009-01-09 1890
> 69f52adb Karsten Keil 2009-01-09 1891 hfcsusb_cnt++;
> 69f52adb Karsten Keil 2009-01-09 1892 write_lock_irqsave(&HFClock, flags);
> 69f52adb Karsten Keil 2009-01-09 1893 list_add_tail(&hw->list, &HFClist);
> 69f52adb Karsten Keil 2009-01-09 1894 write_unlock_irqrestore(&HFClock, flags);
> 69f52adb Karsten Keil 2009-01-09 1895 return 0;
> 69f52adb Karsten Keil 2009-01-09 1896
> 69f52adb Karsten Keil 2009-01-09 1897 out:
> 69f52adb Karsten Keil 2009-01-09 1898 mISDN_freebchannel(&hw->bch[1]);
> 69f52adb Karsten Keil 2009-01-09 1899 mISDN_freebchannel(&hw->bch[0]);
> 69f52adb Karsten Keil 2009-01-09 1900 mISDN_freedchannel(&hw->dch);
> 69f52adb Karsten Keil 2009-01-09 1901 kfree(hw);
> 69f52adb Karsten Keil 2009-01-09 1902 return err;
> 69f52adb Karsten Keil 2009-01-09 1903 }
> 69f52adb Karsten Keil 2009-01-09 1904
>
> :::::: The code at line 1757 was first introduced by commit
> :::::: 69f52adb2d534afc41fcc658f155e01f0b322f9e mISDN: Add HFC USB driver
>
> :::::: TO: Karsten Keil <kkeil@xxxxxxx>
> :::::: CC: Karsten Keil <kkeil@xxxxxxx>
>
> ---
> 0-DAY kernel test infrastructure Open Source Technology Center
> https://lists.01.org/pipermail/kbuild-all Intel Corporation

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