From dde44589bf9fac0168c6ce6d097c99c33b18074f Mon Sep 17 00:00:00 2001 From: Tejun Heo Date: Thu, 2 Feb 2006 00:56:10 +0900 Subject: [PATCH] [PATCH] libata: implement ATA_FLAG_IN_EH port flag ATA_FLAG_IN_EH flag is set on entry to EH and cleared on completion. This patch just sets and clears the flag. Following patches will build normal qc execution / EH synchronization aroung this flag. Signed-off-by: Tejun Heo Signed-off-by: Jeff Garzik --- drivers/scsi/libata-scsi.c | 9 +++++++++ include/linux/libata.h | 2 ++ 2 files changed, 11 insertions(+) diff --git a/drivers/scsi/libata-scsi.c b/drivers/scsi/libata-scsi.c index 2d328b3..3a4f40b 100644 --- a/drivers/scsi/libata-scsi.c +++ b/drivers/scsi/libata-scsi.c @@ -735,6 +735,11 @@ int ata_scsi_error(struct Scsi_Host *host) DPRINTK("ENTER\n"); + spin_lock_irqsave(&ap->host_set->lock, flags); + assert(!(ap->flags & ATA_FLAG_IN_EH)); + ap->flags |= ATA_FLAG_IN_EH; + spin_unlock_irqrestore(&ap->host_set->lock, flags); + ap = (struct ata_port *) &host->hostdata[0]; ap->ops->eng_timeout(ap); @@ -742,6 +747,10 @@ int ata_scsi_error(struct Scsi_Host *host) scsi_eh_flush_done_q(&ap->eh_done_q); + spin_lock_irqsave(&ap->host_set->lock, flags); + ap->flags &= ~ATA_FLAG_IN_EH; + spin_unlock_irqrestore(&ap->host_set->lock, flags); + DPRINTK("EXIT\n"); return 0; } diff --git a/include/linux/libata.h b/include/linux/libata.h index 474cdfa..55176df 100644 --- a/include/linux/libata.h +++ b/include/linux/libata.h @@ -162,6 +162,8 @@ enum { ATA_FLAG_PIO_LBA48 = (1 << 13), /* Host DMA engine is LBA28 only */ ATA_FLAG_IRQ_MASK = (1 << 14), /* Mask IRQ in PIO xfers */ + ATA_FLAG_IN_EH = (1 << 15), /* EH in progress */ + ATA_QCFLAG_ACTIVE = (1 << 1), /* cmd not yet ack'd to scsi lyer */ ATA_QCFLAG_SG = (1 << 3), /* have s/g table? */ ATA_QCFLAG_SINGLE = (1 << 4), /* no s/g, just a single buffer */ -- 2.7.4