Hello.
Tejun Heo wrote:
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.
Signed-off-by: Tejun Heo <tj@xxxxxxxxxx>
---
drivers/ata/libata-sff.c | 17 +++++++----------
1 file changed, 7 insertions(+), 10 deletions(-)
Index: ata/drivers/ata/libata-sff.c
===================================================================
--- ata.orig/drivers/ata/libata-sff.c
+++ ata/drivers/ata/libata-sff.c
@@ -1767,18 +1767,15 @@ irqreturn_t ata_sff_interrupt(int irq, v
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)))
() not needed around !x.
WBR, Sergei
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