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

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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>

---
0-DAY kernel test infrastructure                Open Source Technology Center
https://lists.01.org/pipermail/kbuild-all                   Intel Corporation

Attachment: .config.gz
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