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libata-link: implement ata_link_abort() 

Implement ata_link_abort().

Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
This commit is contained in:
Tejun Heo 2007-08-06 18:36:23 +09:00 committed by Jeff Garzik
parent 4fb37a25b9
commit dbd826168d
3 changed files with 38 additions and 14 deletions
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1
drivers/ata/libata-core.c
View File

@ -7050,6 +7050,7 @@ EXPORT_SYMBOL_GPL(ata_ehi_push_desc);
EXPORT_SYMBOL_GPL(ata_ehi_clear_desc);
EXPORT_SYMBOL_GPL(ata_eng_timeout);
EXPORT_SYMBOL_GPL(ata_port_schedule_eh);
EXPORT_SYMBOL_GPL(ata_link_abort);
EXPORT_SYMBOL_GPL(ata_port_abort);
EXPORT_SYMBOL_GPL(ata_port_freeze);
EXPORT_SYMBOL_GPL(ata_eh_freeze_port);

50
drivers/ata/libata-eh.c
View File

@ -719,19 +719,7 @@ void ata_port_schedule_eh(struct ata_port *ap)
DPRINTK("port EH scheduled\n");
}
/**
* ata_port_abort - abort all qc's on the port
* @ap: ATA port to abort qc's for
*
* Abort all active qc's of @ap and schedule EH.
*
* LOCKING:
* spin_lock_irqsave(host lock)
*
* RETURNS:
* Number of aborted qc's.
*/
int ata_port_abort(struct ata_port *ap)
static int ata_do_link_abort(struct ata_port *ap, struct ata_link *link)
{
int tag, nr_aborted = 0;
@ -743,7 +731,7 @@ int ata_port_abort(struct ata_port *ap)
for (tag = 0; tag < ATA_MAX_QUEUE; tag++) {
struct ata_queued_cmd *qc = ata_qc_from_tag(ap, tag);
if (qc) {
if (qc && (!link || qc->dev->link == link)) {
qc->flags |= ATA_QCFLAG_FAILED;
ata_qc_complete(qc);
nr_aborted++;
@ -756,6 +744,40 @@ int ata_port_abort(struct ata_port *ap)
return nr_aborted;
}
/**
* ata_link_abort - abort all qc's on the link
* @link: ATA link to abort qc's for
*
* Abort all active qc's active on @link and schedule EH.
*
* LOCKING:
* spin_lock_irqsave(host lock)
*
* RETURNS:
* Number of aborted qc's.
*/
int ata_link_abort(struct ata_link *link)
{
return ata_do_link_abort(link->ap, link);
}
/**
* ata_port_abort - abort all qc's on the port
* @ap: ATA port to abort qc's for
*
* Abort all active qc's of @ap and schedule EH.
*
* LOCKING:
* spin_lock_irqsave(host_set lock)
*
* RETURNS:
* Number of aborted qc's.
*/
int ata_port_abort(struct ata_port *ap)
{
return ata_do_link_abort(ap, NULL);
}
/**
* __ata_port_freeze - freeze port
* @ap: ATA port to freeze

1
include/linux/libata.h
View File

@ -906,6 +906,7 @@ extern unsigned long ata_pci_default_filter(struct ata_device *, unsigned long);
extern void ata_eng_timeout(struct ata_port *ap);
extern void ata_port_schedule_eh(struct ata_port *ap);
extern int ata_link_abort(struct ata_link *link);
extern int ata_port_abort(struct ata_port *ap);
extern int ata_port_freeze(struct ata_port *ap);