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authorTejun Heo <htejun@gmail.com>2006-05-15 15:58:07 +0400
committerTejun Heo <htejun@gmail.com>2006-05-15 15:58:07 +0400
commit7b70fc039824bc7303e4007a5f758f832de56611 (patch)
treed973a40055dec97fedc5ae87852667ed2d30ea71 /drivers/scsi/libata-scsi.c
parentf686bcb8078ac7505ec88818886c2c72639f4fc5 (diff)
downloadlinux-7b70fc039824bc7303e4007a5f758f832de56611.tar.xz
[PATCH] libata-eh-fw: implement ata_port_schedule_eh() and ata_port_abort()
ata_port_schedule_eh() directly schedules EH for @ap without associated qc. Once EH scheduled, no further qc is allowed and EH kicks in as soon as all currently active qc's are drained. ata_port_abort() schedules all currently active commands for EH by qc_completing them with ATA_QCFLAG_FAILED set. If ata_port_abort() doesn't find any qc to abort, it directly schedule EH using ata_port_schedule_eh(). These two functions provide ways to invoke EH for conditions which aren't directly related to any specfic qc. Signed-off-by: Tejun Heo <htejun@gmail.com>
Diffstat (limited to 'drivers/scsi/libata-scsi.c')
-rw-r--r--drivers/scsi/libata-scsi.c23
1 files changed, 23 insertions, 0 deletions
diff --git a/drivers/scsi/libata-scsi.c b/drivers/scsi/libata-scsi.c
index a9b4083a4f67..fd7064b9697d 100644
--- a/drivers/scsi/libata-scsi.c
+++ b/drivers/scsi/libata-scsi.c
@@ -2596,3 +2596,26 @@ void ata_scsi_scan_host(struct ata_port *ap)
}
}
+/**
+ * ata_schedule_scsi_eh - schedule EH for SCSI host
+ * @shost: SCSI host to invoke error handling on.
+ *
+ * Schedule SCSI EH without scmd. This is a hack.
+ *
+ * LOCKING:
+ * spin_lock_irqsave(host_set lock)
+ **/
+void ata_schedule_scsi_eh(struct Scsi_Host *shost)
+{
+ unsigned long flags;
+
+ spin_lock_irqsave(shost->host_lock, flags);
+
+ if (scsi_host_set_state(shost, SHOST_RECOVERY) == 0 ||
+ scsi_host_set_state(shost, SHOST_CANCEL_RECOVERY) == 0) {
+ shost->host_eh_scheduled++;
+ scsi_eh_wakeup(shost);
+ }
+
+ spin_unlock_irqrestore(shost->host_lock, flags);
+}