Hi John, [auto build test WARNING on net-next/master]
url: https://github.com/0day-ci/linux/commits/John-Allen/ibmvnic-Update-reset-infrastructure-to-support-tunable-parameters/20171024-062007 config: powerpc-allmodconfig (attached as .config) compiler: powerpc64-linux-gnu-gcc (Debian 6.1.1-9) 6.1.1 20160705 reproduce: wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # save the attached .config to linux build tree make.cross ARCH=powerpc Note: it may well be a FALSE warning. FWIW you are at least aware of it now. http://gcc.gnu.org/wiki/Better_Uninitialized_Warnings All warnings (new ones prefixed by >>): drivers/net//ethernet/ibm/ibmvnic.c: In function '__ibmvnic_reset': >> drivers/net//ethernet/ibm/ibmvnic.c:1620:26: warning: 'rc' may be used >> uninitialized in this function [-Wmaybe-uninitialized] adapter->reset_done_rc = rc; ~~~~~~~~~~~~~~~~~~~~~~~^~~~ vim +/rc +1620 drivers/net//ethernet/ibm/ibmvnic.c ed651a108 Nathan Fontenot 2017-05-03 1592 ed651a108 Nathan Fontenot 2017-05-03 1593 static void __ibmvnic_reset(struct work_struct *work) ed651a108 Nathan Fontenot 2017-05-03 1594 { ed651a108 Nathan Fontenot 2017-05-03 1595 struct ibmvnic_rwi *rwi; ed651a108 Nathan Fontenot 2017-05-03 1596 struct ibmvnic_adapter *adapter; ed651a108 Nathan Fontenot 2017-05-03 1597 struct net_device *netdev; ed651a108 Nathan Fontenot 2017-05-03 1598 u32 reset_state; ed651a108 Nathan Fontenot 2017-05-03 1599 int rc; ed651a108 Nathan Fontenot 2017-05-03 1600 ed651a108 Nathan Fontenot 2017-05-03 1601 adapter = container_of(work, struct ibmvnic_adapter, ibmvnic_reset); ed651a108 Nathan Fontenot 2017-05-03 1602 netdev = adapter->netdev; ed651a108 Nathan Fontenot 2017-05-03 1603 ed651a108 Nathan Fontenot 2017-05-03 1604 mutex_lock(&adapter->reset_lock); ed651a108 Nathan Fontenot 2017-05-03 1605 adapter->resetting = true; ed651a108 Nathan Fontenot 2017-05-03 1606 reset_state = adapter->state; ed651a108 Nathan Fontenot 2017-05-03 1607 ed651a108 Nathan Fontenot 2017-05-03 1608 rwi = get_next_rwi(adapter); ed651a108 Nathan Fontenot 2017-05-03 1609 while (rwi) { ed651a108 Nathan Fontenot 2017-05-03 1610 rc = do_reset(adapter, rwi, reset_state); ed651a108 Nathan Fontenot 2017-05-03 1611 kfree(rwi); 73daa92e4 John Allen 2017-10-23 1612 if (rc && rc != IBMVNIC_INIT_FAILED) ed651a108 Nathan Fontenot 2017-05-03 1613 break; ed651a108 Nathan Fontenot 2017-05-03 1614 ed651a108 Nathan Fontenot 2017-05-03 1615 rwi = get_next_rwi(adapter); ed651a108 Nathan Fontenot 2017-05-03 1616 } ed651a108 Nathan Fontenot 2017-05-03 1617 ce7a66cc8 John Allen 2017-10-23 1618 if (adapter->wait_for_reset) { ce7a66cc8 John Allen 2017-10-23 1619 adapter->wait_for_reset = false; ce7a66cc8 John Allen 2017-10-23 @1620 adapter->reset_done_rc = rc; ce7a66cc8 John Allen 2017-10-23 1621 complete(&adapter->reset_done); ce7a66cc8 John Allen 2017-10-23 1622 } ce7a66cc8 John Allen 2017-10-23 1623 ed651a108 Nathan Fontenot 2017-05-03 1624 if (rc) { d1cf33d93 Nathan Fontenot 2017-08-08 1625 netdev_dbg(adapter->netdev, "Reset failed\n"); ed651a108 Nathan Fontenot 2017-05-03 1626 free_all_rwi(adapter); 6d0af07d5 Wei Yongjun 2017-05-18 1627 mutex_unlock(&adapter->reset_lock); ed651a108 Nathan Fontenot 2017-05-03 1628 return; ed651a108 Nathan Fontenot 2017-05-03 1629 } ed651a108 Nathan Fontenot 2017-05-03 1630 ed651a108 Nathan Fontenot 2017-05-03 1631 adapter->resetting = false; ed651a108 Nathan Fontenot 2017-05-03 1632 mutex_unlock(&adapter->reset_lock); ed651a108 Nathan Fontenot 2017-05-03 1633 } ed651a108 Nathan Fontenot 2017-05-03 1634 :::::: The code at line 1620 was first introduced by commit :::::: ce7a66cc8fceb75d2a95e5e68d21c1889821ff08 ibmvnic: Update reset infrastructure to support tunable parameters :::::: TO: John Allen <jal...@linux.vnet.ibm.com> :::::: CC: 0day robot <fengguang...@intel.com> --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation
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