Hi, [auto build test WARNING on tj-libata/for-next] [also build test WARNING on v4.7-rc3 next-20160616] [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/DingXiang/libata-fix-kernel-panic-when-hotplug/20160616-105155 base: https://git.kernel.org/pub/scm/linux/kernel/git/tj/libata for-next config: x86_64-randconfig-s5-06161418 (attached as .config) compiler: gcc-6 (Debian 6.1.1-1) 6.1.1 20160430 reproduce: # save the attached .config to linux build tree make ARCH=x86_64 All warnings (new ones prefixed by >>): In file included from include/linux/linkage.h:4:0, from include/linux/kernel.h:6, from drivers/ata/libata-eh.c:35: drivers/ata/libata-eh.c: In function 'ata_scsi_port_error_handler': drivers/ata/libata-eh.c:820:19: error: 'ATA_PFLAG_SAS_HOST' undeclared (first use in this function) !(ap->pflags & ATA_PFLAG_SAS_HOST)) ^ include/linux/compiler.h:151:30: note: in definition of macro '__trace_if' if (__builtin_constant_p(!!(cond)) ? !!(cond) : \ ^~~~ >> drivers/ata/libata-eh.c:819:7: note: in expansion of macro 'if' else if ((ap->pflags & ATA_PFLAG_SCSI_HOTPLUG) && ^~ drivers/ata/libata-eh.c:820:19: note: each undeclared identifier is reported only once for each function it appears in !(ap->pflags & ATA_PFLAG_SAS_HOST)) ^ include/linux/compiler.h:151:30: note: in definition of macro '__trace_if' if (__builtin_constant_p(!!(cond)) ? !!(cond) : \ ^~~~ >> drivers/ata/libata-eh.c:819:7: note: in expansion of macro 'if' else if ((ap->pflags & ATA_PFLAG_SCSI_HOTPLUG) && ^~ vim +/if +819 drivers/ata/libata-eh.c 803 ap->ops->end_eh(ap); 804 805 spin_unlock_irqrestore(ap->lock, flags); 806 ata_eh_release(ap); 807 } else { 808 WARN_ON(ata_qc_from_tag(ap, ap->link.active_tag) == NULL); 809 ap->ops->eng_timeout(ap); 810 } 811 812 scsi_eh_flush_done_q(&ap->eh_done_q); 813 814 /* clean up */ 815 spin_lock_irqsave(ap->lock, flags); 816 817 if (ap->pflags & ATA_PFLAG_LOADING) 818 ap->pflags &= ~ATA_PFLAG_LOADING; > 819 else if ((ap->pflags & ATA_PFLAG_SCSI_HOTPLUG) && 820 !(ap->pflags & ATA_PFLAG_SAS_HOST)) 821 schedule_delayed_work(&ap->hotplug_task, 0); 822 823 if (ap->pflags & ATA_PFLAG_RECOVERED) 824 ata_port_info(ap, "EH complete\n"); 825 826 ap->pflags &= ~(ATA_PFLAG_SCSI_HOTPLUG | ATA_PFLAG_RECOVERED); 827 --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation