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[libata irq-pio] reorganize "buf + offset" in ata_pio_sector() 

and __atapi_pio_bytes()

   - relocate DPRINTK("data %s\n", qc->tf.flags & ATA_TFLAG_WRITE ?
			"write" : "read");
   - buf + offset, buf - offset tidy up

Signed-off-by: Albert Lee <albertcc@tw.ibm.com>
This commit is contained in:
Albert Lee 2005-10-09 09:47:31 -04:00 committed by Jeff Garzik
parent 7282aa4b49
commit 083958d313
1 changed files with 12 additions and 12 deletions
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24
drivers/scsi/libata-core.c
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@ -2760,15 +2760,15 @@ static void ata_pio_sector(struct ata_queued_cmd *qc)
page = nth_page(page, (offset >> PAGE_SHIFT));
offset %= PAGE_SIZE;
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);
local_irq_save(flags);
buf = kmap_atomic(page, KM_IRQ0);
kunmap_atomic(buf - offset, KM_IRQ0);
/* do the actual data transfer */
ata_data_xfer(ap, buf + offset, ATA_SECT_SIZE, do_write);
kunmap_atomic(buf, KM_IRQ0);
local_irq_restore(flags);
qc->cursect++;
@ -2952,15 +2952,15 @@ next_sg:
/* don't cross page boundaries */
count = min(count, (unsigned int)PAGE_SIZE - offset);
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);
local_irq_save(flags);
buf = kmap_atomic(page, KM_IRQ0);
kunmap_atomic(buf - offset, KM_IRQ0);
/* do the actual data transfer */
ata_data_xfer(ap, buf + offset, count, do_write);
kunmap_atomic(buf, KM_IRQ0);
local_irq_restore(flags);
bytes -= count;