Re: [PATCH] libata:fix kernel panic when hotplug

From: kbuild test robot
Date: Wed Jun 15 2016 - 04:25:33 EST

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Hi,

[auto build test ERROR on tj-libata/for-next]
[also build test ERROR on v4.7-rc3 next-20160615]
[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/20160615-154255
base: https://git.kernel.org/pub/scm/linux/kernel/git/tj/libata for-next
config: tile-allyesconfig (attached as .config)
compiler: tilegx-linux-gcc (GCC) 4.6.2
reproduce:
wget https://git.kernel.org/cgit/linux/kernel/git/wfg/lkp-tests.git/plain/sbin/make.cross -O ~/bin/make.cross
chmod +x ~/bin/make.cross
# save the attached .config to linux build tree
make.cross ARCH=tile

All error/warnings (new ones prefixed by >>):

drivers/ata/libata-eh.c: In function 'ata_scsi_port_error_handler':
>> drivers/ata/libata-eh.c:836:1: warning: ISO C90 forbids mixed declarations and code [-Wdeclaration-after-statement]
>> drivers/ata/libata-eh.c:836:1: warning: '__used__' attribute ignored [-Wattributes]
>> drivers/ata/libata-eh.c:836:1: error: section attribute cannot be specified for local variables
>> drivers/ata/libata-eh.c:836:1: warning: 'externally_visible' attribute have effect only on public objects [-Wattributes]
>> drivers/ata/libata-eh.c:836:1: error: declaration of '__ksymtab_ata_scsi_port_error_handler' with no linkage follows extern declaration
drivers/ata/libata-eh.c:836:1: note: previous declaration of '__ksymtab_ata_scsi_port_error_handler' was here
drivers/ata/libata-eh.c:871:1: error: non-static declaration of 'ata_port_wait_eh' follows static declaration
drivers/ata/libata-eh.c:847:6: note: previous definition of 'ata_port_wait_eh' was here
drivers/ata/libata-eh.c:871:1: warning: '__used__' attribute ignored [-Wattributes]
drivers/ata/libata-eh.c:871:1: error: section attribute cannot be specified for local variables
drivers/ata/libata-eh.c:871:1: warning: 'externally_visible' attribute have effect only on public objects [-Wattributes]
>> drivers/ata/libata-eh.c:871:1: error: declaration of '__ksymtab_ata_port_wait_eh' with no linkage follows extern declaration
drivers/ata/libata-eh.c:871:1: note: previous declaration of '__ksymtab_ata_port_wait_eh' was here
drivers/ata/libata-eh.c:873:12: error: invalid storage class for function 'ata_eh_nr_in_flight'
drivers/ata/libata-eh.c:937:13: error: invalid storage class for function 'ata_eh_set_pending'
drivers/ata/libata-eh.c:1012:1: error: non-static declaration of 'ata_std_sched_eh' follows static declaration
drivers/ata/libata-eh.c:1000:6: note: previous definition of 'ata_std_sched_eh' was here
drivers/ata/libata-eh.c:1012:1: warning: '__used__' attribute ignored [-Wattributes]
drivers/ata/libata-eh.c:1012:1: error: section attribute cannot be specified for local variables
drivers/ata/libata-eh.c:1012:1: warning: 'externally_visible' attribute have effect only on public objects [-Wattributes]
>> drivers/ata/libata-eh.c:1012:1: error: declaration of '__ksymtab_ata_std_sched_eh' with no linkage follows extern declaration
drivers/ata/libata-eh.c:1012:1: note: previous declaration of '__ksymtab_ata_std_sched_eh' was here
drivers/ata/libata-eh.c:1032:1: error: non-static declaration of 'ata_std_end_eh' follows static declaration
drivers/ata/libata-eh.c:1026:6: note: previous definition of 'ata_std_end_eh' was here
drivers/ata/libata-eh.c:1032:1: warning: '__used__' attribute ignored [-Wattributes]
drivers/ata/libata-eh.c:1032:1: error: section attribute cannot be specified for local variables
drivers/ata/libata-eh.c:1032:1: warning: 'externally_visible' attribute have effect only on public objects [-Wattributes]
>> drivers/ata/libata-eh.c:1032:1: error: declaration of '__ksymtab_ata_std_end_eh' with no linkage follows extern declaration
drivers/ata/libata-eh.c:1032:1: note: previous declaration of '__ksymtab_ata_std_end_eh' was here
drivers/ata/libata-eh.c:1051:12: error: invalid storage class for function 'ata_do_link_abort'
drivers/ata/libata-eh.c:1128:13: error: invalid storage class for function '__ata_port_freeze'
drivers/ata/libata-eh.c:1288:13: error: invalid storage class for function 'ata_eh_scsidone'
drivers/ata/libata-eh.c:1293:13: error: invalid storage class for function '__ata_eh_qc_complete'
drivers/ata/libata-eh.c:1471:20: error: invalid storage class for function 'ata_err_string'
drivers/ata/libata-eh.c:1571:12: error: invalid storage class for function 'ata_eh_read_log_10h'
drivers/ata/libata-eh.c:1654:13: error: invalid storage class for function 'ata_eh_request_sense'
drivers/ata/libata-eh.c:1756:13: error: invalid storage class for function 'ata_eh_analyze_serror'
drivers/ata/libata-eh.c:1885:21: error: invalid storage class for function 'ata_eh_analyze_tf'
drivers/ata/libata-eh.c:1957:12: error: invalid storage class for function 'ata_eh_categorize_error'
drivers/ata/libata-eh.c:1991:12: error: invalid storage class for function 'speed_down_verdict_cb'
drivers/ata/libata-eh.c:2063:21: error: invalid storage class for function 'ata_eh_speed_down_verdict'
drivers/ata/libata-eh.c:2123:21: error: invalid storage class for function 'ata_eh_speed_down'
drivers/ata/libata-eh.c:2208:19: error: invalid storage class for function 'ata_eh_worth_retry'
drivers/ata/libata-eh.c:2230:13: error: invalid storage class for function 'ata_eh_link_autopsy'
drivers/ata/libata-eh.c:2506:1: error: non-static declaration of 'ata_get_cmd_descript' follows static declaration
drivers/ata/libata-eh.c:2396:13: note: previous definition of 'ata_get_cmd_descript' was here
drivers/ata/libata-eh.c:2506:1: warning: '__used__' attribute ignored [-Wattributes]
drivers/ata/libata-eh.c:2506:1: error: section attribute cannot be specified for local variables
drivers/ata/libata-eh.c:2506:1: warning: 'externally_visible' attribute have effect only on public objects [-Wattributes]
>> drivers/ata/libata-eh.c:2506:1: error: declaration of '__ksymtab_ata_get_cmd_descript' with no linkage follows extern declaration
drivers/ata/libata-eh.c:2506:1: note: previous declaration of '__ksymtab_ata_get_cmd_descript' was here
drivers/ata/libata-eh.c:2517:13: error: invalid storage class for function 'ata_eh_link_report'
drivers/ata/libata-eh.c:2703:12: error: invalid storage class for function 'ata_do_reset'
drivers/ata/libata-eh.c:2716:12: error: invalid storage class for function 'ata_eh_followup_srst_needed'
drivers/ata/libata-eh.c:3117:20: error: invalid storage class for function 'ata_eh_pull_park_action'
drivers/ata/libata-eh.c:3163:13: error: invalid storage class for function 'ata_eh_park_issue_cmd'
drivers/ata/libata-eh.c:3191:12: error: invalid storage class for function 'ata_eh_revalidate_and_attach'
drivers/ata/libata-eh.c:3386:12: error: invalid storage class for function 'atapi_eh_clear_ua'
drivers/ata/libata-eh.c:3437:12: error: invalid storage class for function 'ata_eh_maybe_retry_flush'
drivers/ata/libata-eh.c:3513:12: error: invalid storage class for function 'ata_eh_set_lpm'
drivers/ata/libata-eh.c:3639:12: error: invalid storage class for function 'ata_link_nr_vacant'
drivers/ata/libata-eh.c:3650:12: error: invalid storage class for function 'ata_eh_skip_recovery'
drivers/ata/libata-eh.c:3683:12: error: invalid storage class for function 'ata_count_probe_trials_cb'
drivers/ata/libata-eh.c:3697:12: error: invalid storage class for function 'ata_eh_schedule_probe'
drivers/ata/libata-eh.c:3746:12: error: invalid storage class for function 'ata_eh_handle_dev_fail'
drivers/ata/libata-eh.c:4140:1: error: expected declaration or statement at end of input
drivers/ata/libata-eh.c: At top level:
drivers/ata/libata-eh.c:166:13: warning: '__ata_port_freeze' used but never defined [enabled by default]

vim +836 drivers/ata/libata-eh.c

c6cf9e99d drivers/scsi/libata-eh.c Tejun Heo 2006-05-31 830 /* tell wait_eh that we're done */
b51e9e5db drivers/scsi/libata-eh.c Tejun Heo 2006-06-29 831 ap->pflags &= ~ATA_PFLAG_EH_IN_PROGRESS;
c6cf9e99d drivers/scsi/libata-eh.c Tejun Heo 2006-05-31 832 wake_up_all(&ap->eh_wait_q);
c6cf9e99d drivers/scsi/libata-eh.c Tejun Heo 2006-05-31 833
e30349d27 drivers/scsi/libata-eh.c Tejun Heo 2006-07-03 834 spin_unlock_irqrestore(ap->lock, flags);
ece1d6361 drivers/scsi/libata-eh.c Tejun Heo 2006-04-02 835 }
0e0b494ca drivers/ata/libata-eh.c James Bottomley 2011-01-23 @836 EXPORT_SYMBOL_GPL(ata_scsi_port_error_handler);
ece1d6361 drivers/scsi/libata-eh.c Tejun Heo 2006-04-02 837
ece1d6361 drivers/scsi/libata-eh.c Tejun Heo 2006-04-02 838 /**
c6cf9e99d drivers/scsi/libata-eh.c Tejun Heo 2006-05-31 839 * ata_port_wait_eh - Wait for the currently pending EH to complete
c6cf9e99d drivers/scsi/libata-eh.c Tejun Heo 2006-05-31 840 * @ap: Port to wait EH for
c6cf9e99d drivers/scsi/libata-eh.c Tejun Heo 2006-05-31 841 *
c6cf9e99d drivers/scsi/libata-eh.c Tejun Heo 2006-05-31 842 * Wait until the currently pending EH is complete.
c6cf9e99d drivers/scsi/libata-eh.c Tejun Heo 2006-05-31 843 *
c6cf9e99d drivers/scsi/libata-eh.c Tejun Heo 2006-05-31 844 * LOCKING:
c6cf9e99d drivers/scsi/libata-eh.c Tejun Heo 2006-05-31 845 * Kernel thread context (may sleep).
c6cf9e99d drivers/scsi/libata-eh.c Tejun Heo 2006-05-31 846 */
c6cf9e99d drivers/scsi/libata-eh.c Tejun Heo 2006-05-31 847 void ata_port_wait_eh(struct ata_port *ap)
c6cf9e99d drivers/scsi/libata-eh.c Tejun Heo 2006-05-31 848 {
c6cf9e99d drivers/scsi/libata-eh.c Tejun Heo 2006-05-31 849 unsigned long flags;
c6cf9e99d drivers/scsi/libata-eh.c Tejun Heo 2006-05-31 850 DEFINE_WAIT(wait);
c6cf9e99d drivers/scsi/libata-eh.c Tejun Heo 2006-05-31 851
c6cf9e99d drivers/scsi/libata-eh.c Tejun Heo 2006-05-31 852 retry:
ba6a13083 drivers/scsi/libata-eh.c Jeff Garzik 2006-06-22 853 spin_lock_irqsave(ap->lock, flags);
c6cf9e99d drivers/scsi/libata-eh.c Tejun Heo 2006-05-31 854
b51e9e5db drivers/scsi/libata-eh.c Tejun Heo 2006-06-29 855 while (ap->pflags & (ATA_PFLAG_EH_PENDING | ATA_PFLAG_EH_IN_PROGRESS)) {
c6cf9e99d drivers/scsi/libata-eh.c Tejun Heo 2006-05-31 856 prepare_to_wait(&ap->eh_wait_q, &wait, TASK_UNINTERRUPTIBLE);
ba6a13083 drivers/scsi/libata-eh.c Jeff Garzik 2006-06-22 857 spin_unlock_irqrestore(ap->lock, flags);
c6cf9e99d drivers/scsi/libata-eh.c Tejun Heo 2006-05-31 858 schedule();
ba6a13083 drivers/scsi/libata-eh.c Jeff Garzik 2006-06-22 859 spin_lock_irqsave(ap->lock, flags);
c6cf9e99d drivers/scsi/libata-eh.c Tejun Heo 2006-05-31 860 }
0a1b622ef drivers/scsi/libata-eh.c Tejun Heo 2006-06-11 861 finish_wait(&ap->eh_wait_q, &wait);
c6cf9e99d drivers/scsi/libata-eh.c Tejun Heo 2006-05-31 862
ba6a13083 drivers/scsi/libata-eh.c Jeff Garzik 2006-06-22 863 spin_unlock_irqrestore(ap->lock, flags);
c6cf9e99d drivers/scsi/libata-eh.c Tejun Heo 2006-05-31 864
c6cf9e99d drivers/scsi/libata-eh.c Tejun Heo 2006-05-31 865 /* make sure SCSI EH is complete */
cca3974e4 drivers/ata/libata-eh.c Jeff Garzik 2006-08-24 866 if (scsi_host_in_recovery(ap->scsi_host)) {
97750cebb drivers/ata/libata-eh.c Tejun Heo 2010-09-06 867 ata_msleep(ap, 10);
c6cf9e99d drivers/scsi/libata-eh.c Tejun Heo 2006-05-31 868 goto retry;
c6cf9e99d drivers/scsi/libata-eh.c Tejun Heo 2006-05-31 869 }
c6cf9e99d drivers/scsi/libata-eh.c Tejun Heo 2006-05-31 870 }
81c757bc6 drivers/ata/libata-eh.c Dan Williams 2011-12-02 @871 EXPORT_SYMBOL_GPL(ata_port_wait_eh);
c6cf9e99d drivers/scsi/libata-eh.c Tejun Heo 2006-05-31 872
5ddf24c5e drivers/ata/libata-eh.c Tejun Heo 2007-07-16 873 static int ata_eh_nr_in_flight(struct ata_port *ap)
5ddf24c5e drivers/ata/libata-eh.c Tejun Heo 2007-07-16 874 {
5ddf24c5e drivers/ata/libata-eh.c Tejun Heo 2007-07-16 875 unsigned int tag;
5ddf24c5e drivers/ata/libata-eh.c Tejun Heo 2007-07-16 876 int nr = 0;
5ddf24c5e drivers/ata/libata-eh.c Tejun Heo 2007-07-16 877
5ddf24c5e drivers/ata/libata-eh.c Tejun Heo 2007-07-16 878 /* count only non-internal commands */
5ddf24c5e drivers/ata/libata-eh.c Tejun Heo 2007-07-16 879 for (tag = 0; tag < ATA_MAX_QUEUE - 1; tag++)
5ddf24c5e drivers/ata/libata-eh.c Tejun Heo 2007-07-16 880 if (ata_qc_from_tag(ap, tag))
5ddf24c5e drivers/ata/libata-eh.c Tejun Heo 2007-07-16 881 nr++;
5ddf24c5e drivers/ata/libata-eh.c Tejun Heo 2007-07-16 882
5ddf24c5e drivers/ata/libata-eh.c Tejun Heo 2007-07-16 883 return nr;
5ddf24c5e drivers/ata/libata-eh.c Tejun Heo 2007-07-16 884 }
5ddf24c5e drivers/ata/libata-eh.c Tejun Heo 2007-07-16 885
5ddf24c5e drivers/ata/libata-eh.c Tejun Heo 2007-07-16 886 void ata_eh_fastdrain_timerfn(unsigned long arg)
5ddf24c5e drivers/ata/libata-eh.c Tejun Heo 2007-07-16 887 {
5ddf24c5e drivers/ata/libata-eh.c Tejun Heo 2007-07-16 888 struct ata_port *ap = (void *)arg;
5ddf24c5e drivers/ata/libata-eh.c Tejun Heo 2007-07-16 889 unsigned long flags;
5ddf24c5e drivers/ata/libata-eh.c Tejun Heo 2007-07-16 890 int cnt;
5ddf24c5e drivers/ata/libata-eh.c Tejun Heo 2007-07-16 891
5ddf24c5e drivers/ata/libata-eh.c Tejun Heo 2007-07-16 892 spin_lock_irqsave(ap->lock, flags);
5ddf24c5e drivers/ata/libata-eh.c Tejun Heo 2007-07-16 893
5ddf24c5e drivers/ata/libata-eh.c Tejun Heo 2007-07-16 894 cnt = ata_eh_nr_in_flight(ap);
5ddf24c5e drivers/ata/libata-eh.c Tejun Heo 2007-07-16 895
5ddf24c5e drivers/ata/libata-eh.c Tejun Heo 2007-07-16 896 /* are we done? */
5ddf24c5e drivers/ata/libata-eh.c Tejun Heo 2007-07-16 897 if (!cnt)
5ddf24c5e drivers/ata/libata-eh.c Tejun Heo 2007-07-16 898 goto out_unlock;
5ddf24c5e drivers/ata/libata-eh.c Tejun Heo 2007-07-16 899
5ddf24c5e drivers/ata/libata-eh.c Tejun Heo 2007-07-16 900 if (cnt == ap->fastdrain_cnt) {
5ddf24c5e drivers/ata/libata-eh.c Tejun Heo 2007-07-16 901 unsigned int tag;
5ddf24c5e drivers/ata/libata-eh.c Tejun Heo 2007-07-16 902
5ddf24c5e drivers/ata/libata-eh.c Tejun Heo 2007-07-16 903 /* No progress during the last interval, tag all
5ddf24c5e drivers/ata/libata-eh.c Tejun Heo 2007-07-16 904 * in-flight qcs as timed out and freeze the port.
5ddf24c5e drivers/ata/libata-eh.c Tejun Heo 2007-07-16 905 */
5ddf24c5e drivers/ata/libata-eh.c Tejun Heo 2007-07-16 906 for (tag = 0; tag < ATA_MAX_QUEUE - 1; tag++) {
5ddf24c5e drivers/ata/libata-eh.c Tejun Heo 2007-07-16 907 struct ata_queued_cmd *qc = ata_qc_from_tag(ap, tag);
5ddf24c5e drivers/ata/libata-eh.c Tejun Heo 2007-07-16 908 if (qc)
5ddf24c5e drivers/ata/libata-eh.c Tejun Heo 2007-07-16 909 qc->err_mask |= AC_ERR_TIMEOUT;
5ddf24c5e drivers/ata/libata-eh.c Tejun Heo 2007-07-16 910 }
5ddf24c5e drivers/ata/libata-eh.c Tejun Heo 2007-07-16 911
5ddf24c5e drivers/ata/libata-eh.c Tejun Heo 2007-07-16 912 ata_port_freeze(ap);
5ddf24c5e drivers/ata/libata-eh.c Tejun Heo 2007-07-16 913 } else {
5ddf24c5e drivers/ata/libata-eh.c Tejun Heo 2007-07-16 914 /* some qcs have finished, give it another chance */
5ddf24c5e drivers/ata/libata-eh.c Tejun Heo 2007-07-16 915 ap->fastdrain_cnt = cnt;
5ddf24c5e drivers/ata/libata-eh.c Tejun Heo 2007-07-16 916 ap->fastdrain_timer.expires =
341c2c958 drivers/ata/libata-eh.c Tejun Heo 2008-05-20 917 ata_deadline(jiffies, ATA_EH_FASTDRAIN_INTERVAL);
5ddf24c5e drivers/ata/libata-eh.c Tejun Heo 2007-07-16 918 add_timer(&ap->fastdrain_timer);
5ddf24c5e drivers/ata/libata-eh.c Tejun Heo 2007-07-16 919 }
5ddf24c5e drivers/ata/libata-eh.c Tejun Heo 2007-07-16 920
5ddf24c5e drivers/ata/libata-eh.c Tejun Heo 2007-07-16 921 out_unlock:
5ddf24c5e drivers/ata/libata-eh.c Tejun Heo 2007-07-16 922 spin_unlock_irqrestore(ap->lock, flags);
5ddf24c5e drivers/ata/libata-eh.c Tejun Heo 2007-07-16 923 }
5ddf24c5e drivers/ata/libata-eh.c Tejun Heo 2007-07-16 924
5ddf24c5e drivers/ata/libata-eh.c Tejun Heo 2007-07-16 925 /**
5ddf24c5e drivers/ata/libata-eh.c Tejun Heo 2007-07-16 926 * ata_eh_set_pending - set ATA_PFLAG_EH_PENDING and activate fast drain
5ddf24c5e drivers/ata/libata-eh.c Tejun Heo 2007-07-16 927 * @ap: target ATA port
5ddf24c5e drivers/ata/libata-eh.c Tejun Heo 2007-07-16 928 * @fastdrain: activate fast drain
5ddf24c5e drivers/ata/libata-eh.c Tejun Heo 2007-07-16 929 *
5ddf24c5e drivers/ata/libata-eh.c Tejun Heo 2007-07-16 930 * Set ATA_PFLAG_EH_PENDING and activate fast drain if @fastdrain
5ddf24c5e drivers/ata/libata-eh.c Tejun Heo 2007-07-16 931 * is non-zero and EH wasn't pending before. Fast drain ensures
5ddf24c5e drivers/ata/libata-eh.c Tejun Heo 2007-07-16 932 * that EH kicks in in timely manner.
5ddf24c5e drivers/ata/libata-eh.c Tejun Heo 2007-07-16 933 *
5ddf24c5e drivers/ata/libata-eh.c Tejun Heo 2007-07-16 934 * LOCKING:
5ddf24c5e drivers/ata/libata-eh.c Tejun Heo 2007-07-16 935 * spin_lock_irqsave(host lock)
5ddf24c5e drivers/ata/libata-eh.c Tejun Heo 2007-07-16 936 */
5ddf24c5e drivers/ata/libata-eh.c Tejun Heo 2007-07-16 937 static void ata_eh_set_pending(struct ata_port *ap, int fastdrain)
5ddf24c5e drivers/ata/libata-eh.c Tejun Heo 2007-07-16 938 {
5ddf24c5e drivers/ata/libata-eh.c Tejun Heo 2007-07-16 939 int cnt;
5ddf24c5e drivers/ata/libata-eh.c Tejun Heo 2007-07-16 940
5ddf24c5e drivers/ata/libata-eh.c Tejun Heo 2007-07-16 941 /* already scheduled? */
5ddf24c5e drivers/ata/libata-eh.c Tejun Heo 2007-07-16 942 if (ap->pflags & ATA_PFLAG_EH_PENDING)
5ddf24c5e drivers/ata/libata-eh.c Tejun Heo 2007-07-16 943 return;
5ddf24c5e drivers/ata/libata-eh.c Tejun Heo 2007-07-16 944
5ddf24c5e drivers/ata/libata-eh.c Tejun Heo 2007-07-16 945 ap->pflags |= ATA_PFLAG_EH_PENDING;
5ddf24c5e drivers/ata/libata-eh.c Tejun Heo 2007-07-16 946
5ddf24c5e drivers/ata/libata-eh.c Tejun Heo 2007-07-16 947 if (!fastdrain)
5ddf24c5e drivers/ata/libata-eh.c Tejun Heo 2007-07-16 948 return;
5ddf24c5e drivers/ata/libata-eh.c Tejun Heo 2007-07-16 949
5ddf24c5e drivers/ata/libata-eh.c Tejun Heo 2007-07-16 950 /* do we have in-flight qcs? */
5ddf24c5e drivers/ata/libata-eh.c Tejun Heo 2007-07-16 951 cnt = ata_eh_nr_in_flight(ap);
5ddf24c5e drivers/ata/libata-eh.c Tejun Heo 2007-07-16 952 if (!cnt)
5ddf24c5e drivers/ata/libata-eh.c Tejun Heo 2007-07-16 953 return;
5ddf24c5e drivers/ata/libata-eh.c Tejun Heo 2007-07-16 954
5ddf24c5e drivers/ata/libata-eh.c Tejun Heo 2007-07-16 955 /* activate fast drain */
5ddf24c5e drivers/ata/libata-eh.c Tejun Heo 2007-07-16 956 ap->fastdrain_cnt = cnt;
341c2c958 drivers/ata/libata-eh.c Tejun Heo 2008-05-20 957 ap->fastdrain_timer.expires =
341c2c958 drivers/ata/libata-eh.c Tejun Heo 2008-05-20 958 ata_deadline(jiffies, ATA_EH_FASTDRAIN_INTERVAL);
5ddf24c5e drivers/ata/libata-eh.c Tejun Heo 2007-07-16 959 add_timer(&ap->fastdrain_timer);
5ddf24c5e drivers/ata/libata-eh.c Tejun Heo 2007-07-16 960 }
5ddf24c5e drivers/ata/libata-eh.c Tejun Heo 2007-07-16 961
f686bcb80 drivers/scsi/libata-eh.c Tejun Heo 2006-05-15 962 /**
f686bcb80 drivers/scsi/libata-eh.c Tejun Heo 2006-05-15 963 * ata_qc_schedule_eh - schedule qc for error handling
f686bcb80 drivers/scsi/libata-eh.c Tejun Heo 2006-05-15 964 * @qc: command to schedule error handling for
f686bcb80 drivers/scsi/libata-eh.c Tejun Heo 2006-05-15 965 *
f686bcb80 drivers/scsi/libata-eh.c Tejun Heo 2006-05-15 966 * Schedule error handling for @qc. EH will kick in as soon as
f686bcb80 drivers/scsi/libata-eh.c Tejun Heo 2006-05-15 967 * other commands are drained.
f686bcb80 drivers/scsi/libata-eh.c Tejun Heo 2006-05-15 968 *
f686bcb80 drivers/scsi/libata-eh.c Tejun Heo 2006-05-15 969 * LOCKING:
cca3974e4 drivers/ata/libata-eh.c Jeff Garzik 2006-08-24 970 * spin_lock_irqsave(host lock)
f686bcb80 drivers/scsi/libata-eh.c Tejun Heo 2006-05-15 971 */
f686bcb80 drivers/scsi/libata-eh.c Tejun Heo 2006-05-15 972 void ata_qc_schedule_eh(struct ata_queued_cmd *qc)
f686bcb80 drivers/scsi/libata-eh.c Tejun Heo 2006-05-15 973 {
f686bcb80 drivers/scsi/libata-eh.c Tejun Heo 2006-05-15 974 struct ata_port *ap = qc->ap;
fa41efdae drivers/ata/libata-eh.c Tejun Heo 2010-04-15 975 struct request_queue *q = qc->scsicmd->device->request_queue;
fa41efdae drivers/ata/libata-eh.c Tejun Heo 2010-04-15 976 unsigned long flags;
f686bcb80 drivers/scsi/libata-eh.c Tejun Heo 2006-05-15 977
f686bcb80 drivers/scsi/libata-eh.c Tejun Heo 2006-05-15 978 WARN_ON(!ap->ops->error_handler);
f686bcb80 drivers/scsi/libata-eh.c Tejun Heo 2006-05-15 979
f686bcb80 drivers/scsi/libata-eh.c Tejun Heo 2006-05-15 980 qc->flags |= ATA_QCFLAG_FAILED;
5ddf24c5e drivers/ata/libata-eh.c Tejun Heo 2007-07-16 981 ata_eh_set_pending(ap, 1);
f686bcb80 drivers/scsi/libata-eh.c Tejun Heo 2006-05-15 982
f686bcb80 drivers/scsi/libata-eh.c Tejun Heo 2006-05-15 983 /* The following will fail if timeout has already expired.
f686bcb80 drivers/scsi/libata-eh.c Tejun Heo 2006-05-15 984 * ata_scsi_error() takes care of such scmds on EH entry.
f686bcb80 drivers/scsi/libata-eh.c Tejun Heo 2006-05-15 985 * Note that ATA_QCFLAG_FAILED is unconditionally set after
f686bcb80 drivers/scsi/libata-eh.c Tejun Heo 2006-05-15 986 * this function completes.
f686bcb80 drivers/scsi/libata-eh.c Tejun Heo 2006-05-15 987 */
fa41efdae drivers/ata/libata-eh.c Tejun Heo 2010-04-15 988 spin_lock_irqsave(q->queue_lock, flags);
242f9dcb8 drivers/ata/libata-eh.c Jens Axboe 2008-09-14 989 blk_abort_request(qc->scsicmd->request);
fa41efdae drivers/ata/libata-eh.c Tejun Heo 2010-04-15 990 spin_unlock_irqrestore(q->queue_lock, flags);
f686bcb80 drivers/scsi/libata-eh.c Tejun Heo 2006-05-15 991 }
f686bcb80 drivers/scsi/libata-eh.c Tejun Heo 2006-05-15 992
7b70fc039 drivers/scsi/libata-eh.c Tejun Heo 2006-05-15 993 /**
e4a9c3732 drivers/ata/libata-eh.c Dan Williams 2012-06-21 994 * ata_std_sched_eh - non-libsas ata_ports issue eh with this common routine
7b70fc039 drivers/scsi/libata-eh.c Tejun Heo 2006-05-15 995 * @ap: ATA port to schedule EH for
7b70fc039 drivers/scsi/libata-eh.c Tejun Heo 2006-05-15 996 *
e4a9c3732 drivers/ata/libata-eh.c Dan Williams 2012-06-21 997 * LOCKING: inherited from ata_port_schedule_eh
cca3974e4 drivers/ata/libata-eh.c Jeff Garzik 2006-08-24 998 * spin_lock_irqsave(host lock)
7b70fc039 drivers/scsi/libata-eh.c Tejun Heo 2006-05-15 999 */
e4a9c3732 drivers/ata/libata-eh.c Dan Williams 2012-06-21 1000 void ata_std_sched_eh(struct ata_port *ap)
7b70fc039 drivers/scsi/libata-eh.c Tejun Heo 2006-05-15 1001 {
7b70fc039 drivers/scsi/libata-eh.c Tejun Heo 2006-05-15 1002 WARN_ON(!ap->ops->error_handler);
7b70fc039 drivers/scsi/libata-eh.c Tejun Heo 2006-05-15 1003
f4d6d0046 drivers/ata/libata-eh.c Tejun Heo 2007-05-01 1004 if (ap->pflags & ATA_PFLAG_INITIALIZING)
f4d6d0046 drivers/ata/libata-eh.c Tejun Heo 2007-05-01 1005 return;
f4d6d0046 drivers/ata/libata-eh.c Tejun Heo 2007-05-01 1006
5ddf24c5e drivers/ata/libata-eh.c Tejun Heo 2007-07-16 1007 ata_eh_set_pending(ap, 1);
cca3974e4 drivers/ata/libata-eh.c Jeff Garzik 2006-08-24 1008 scsi_schedule_eh(ap->scsi_host);
7b70fc039 drivers/scsi/libata-eh.c Tejun Heo 2006-05-15 1009
7b70fc039 drivers/scsi/libata-eh.c Tejun Heo 2006-05-15 1010 DPRINTK("port EH scheduled\n");
7b70fc039 drivers/scsi/libata-eh.c Tejun Heo 2006-05-15 1011 }
e4a9c3732 drivers/ata/libata-eh.c Dan Williams 2012-06-21 @1012 EXPORT_SYMBOL_GPL(ata_std_sched_eh);
e4a9c3732 drivers/ata/libata-eh.c Dan Williams 2012-06-21 1013
e4a9c3732 drivers/ata/libata-eh.c Dan Williams 2012-06-21 1014 /**
e4a9c3732 drivers/ata/libata-eh.c Dan Williams 2012-06-21 1015 * ata_std_end_eh - non-libsas ata_ports complete eh with this common routine
e4a9c3732 drivers/ata/libata-eh.c Dan Williams 2012-06-21 1016 * @ap: ATA port to end EH for
e4a9c3732 drivers/ata/libata-eh.c Dan Williams 2012-06-21 1017 *
e4a9c3732 drivers/ata/libata-eh.c Dan Williams 2012-06-21 1018 * In the libata object model there is a 1:1 mapping of ata_port to
e4a9c3732 drivers/ata/libata-eh.c Dan Williams 2012-06-21 1019 * shost, so host fields can be directly manipulated under ap->lock, in
e4a9c3732 drivers/ata/libata-eh.c Dan Williams 2012-06-21 1020 * the libsas case we need to hold a lock at the ha->level to coordinate
e4a9c3732 drivers/ata/libata-eh.c Dan Williams 2012-06-21 1021 * these events.
e4a9c3732 drivers/ata/libata-eh.c Dan Williams 2012-06-21 1022 *
e4a9c3732 drivers/ata/libata-eh.c Dan Williams 2012-06-21 1023 * LOCKING:
e4a9c3732 drivers/ata/libata-eh.c Dan Williams 2012-06-21 1024 * spin_lock_irqsave(host lock)
e4a9c3732 drivers/ata/libata-eh.c Dan Williams 2012-06-21 1025 */
e4a9c3732 drivers/ata/libata-eh.c Dan Williams 2012-06-21 1026 void ata_std_end_eh(struct ata_port *ap)
e4a9c3732 drivers/ata/libata-eh.c Dan Williams 2012-06-21 1027 {
e4a9c3732 drivers/ata/libata-eh.c Dan Williams 2012-06-21 1028 struct Scsi_Host *host = ap->scsi_host;
e4a9c3732 drivers/ata/libata-eh.c Dan Williams 2012-06-21 1029
e4a9c3732 drivers/ata/libata-eh.c Dan Williams 2012-06-21 1030 host->host_eh_scheduled = 0;
e4a9c3732 drivers/ata/libata-eh.c Dan Williams 2012-06-21 1031 }
e4a9c3732 drivers/ata/libata-eh.c Dan Williams 2012-06-21 @1032 EXPORT_SYMBOL(ata_std_end_eh);
e4a9c3732 drivers/ata/libata-eh.c Dan Williams 2012-06-21 1033
e4a9c3732 drivers/ata/libata-eh.c Dan Williams 2012-06-21 1034
e4a9c3732 drivers/ata/libata-eh.c Dan Williams 2012-06-21 1035 /**

:::::: The code at line 836 was first introduced by commit
:::::: 0e0b494ca8c54a7297d0cc549405091019b3b77e libata: separate error handler into usable components

:::::: TO: James Bottomley <James.Bottomley@xxxxxxx>
:::::: CC: Jeff Garzik <jgarzik@xxxxxxxxxx>

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