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[libata irq-pio] reorganize ata_pio_sector() and __atapi_pio_bytes()

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- move some code out of the kmap_atomic() / kunmap_atomic() zone
   - remove the redundant "do_write = (qc->tf.flags & ATA_TFLAG_WRITE);"

Signed-off-by: Albert Lee <albertcc@tw.ibm.com>
This commit is contained in:
Albert Lee 2005-10-09 09:46:07 -04:00 committed by Jeff Garzik
parent f58f8be7f6
commit 7282aa4b49
1 changed files with 16 additions and 17 deletions
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33
drivers/scsi/libata-core.c
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@ -2763,6 +2763,14 @@ static void ata_pio_sector(struct ata_queued_cmd *qc)
local_irq_save(flags);
buf = kmap_atomic(page, KM_IRQ0) + offset;
DPRINTK("data %s\n", qc->tf.flags & ATA_TFLAG_WRITE ? "write" : "read");
/* do the actual data transfer */
ata_data_xfer(ap, buf, ATA_SECT_SIZE, do_write);
kunmap_atomic(buf - offset, KM_IRQ0);
local_irq_restore(flags);
qc->cursect++;
qc->cursg_ofs++;
@ -2770,15 +2778,6 @@ static void ata_pio_sector(struct ata_queued_cmd *qc)
qc->cursg++;
qc->cursg_ofs = 0;
}
DPRINTK("data %s\n", qc->tf.flags & ATA_TFLAG_WRITE ? "write" : "read");
/* do the actual data transfer */
do_write = (qc->tf.flags & ATA_TFLAG_WRITE);
ata_data_xfer(ap, buf, ATA_SECT_SIZE, do_write);
kunmap_atomic(buf - offset, KM_IRQ0);
local_irq_restore(flags);
}
/**
@ -2956,6 +2955,14 @@ next_sg:
local_irq_save(flags);
buf = kmap_atomic(page, KM_IRQ0) + offset;
DPRINTK("data %s\n", qc->tf.flags & ATA_TFLAG_WRITE ? "write" : "read");
/* do the actual data transfer */
ata_data_xfer(ap, buf, count, do_write);
kunmap_atomic(buf - offset, KM_IRQ0);
local_irq_restore(flags);
bytes -= count;
qc->curbytes += count;
qc->cursg_ofs += count;
@ -2965,14 +2972,6 @@ next_sg:
qc->cursg_ofs = 0;
}
DPRINTK("data %s\n", qc->tf.flags & ATA_TFLAG_WRITE ? "write" : "read");
/* do the actual data transfer */
ata_data_xfer(ap, buf, count, do_write);
kunmap_atomic(buf - offset, KM_IRQ0);
local_irq_restore(flags);
if (bytes)
goto next_sg;
}