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libata: cleanup ata_sff_interrupt()

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host->ports[i] is never NULL if i < host->n_ports and non-NULL return
from ata_qc_from_tag() guarantees that the returned qc is active.
Drop unnecessary tests.

Superflous () dropped as suggested by Sergei.

Signed-off-by: Tejun Heo <tj@kernel.org>
Cc: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
This commit is contained in:
Tejun Heo 2010-01-19 10:46:32 +09:00 committed by Jeff Garzik
parent 88e8201e67
commit d88ec2e5c1
1 changed files with 7 additions and 10 deletions
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17
drivers/ata/libata-sff.c
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@ -1770,18 +1770,15 @@ irqreturn_t ata_sff_interrupt(int irq, void *dev_instance)
spin_lock_irqsave(&host->lock, flags);
for (i = 0; i < host->n_ports; i++) {
struct ata_port *ap;
struct ata_port *ap = host->ports[i];
struct ata_queued_cmd *qc;
ap = host->ports[i];
if (ap &&
!(ap->flags & ATA_FLAG_DISABLED)) {
struct ata_queued_cmd *qc;
if (unlikely(ap->flags & ATA_FLAG_DISABLED))
continue;
qc = ata_qc_from_tag(ap, ap->link.active_tag);
if (qc && (!(qc->tf.flags & ATA_TFLAG_POLLING)) &&
(qc->flags & ATA_QCFLAG_ACTIVE))
handled |= ata_sff_host_intr(ap, qc);
}
qc = ata_qc_from_tag(ap, ap->link.active_tag);
if (qc && !(qc->tf.flags & ATA_TFLAG_POLLING))
handled |= ata_sff_host_intr(ap, qc);
}
spin_unlock_irqrestore(&host->lock, flags);