[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>
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@ -2760,15 +2760,15 @@ static void ata_pio_sector(struct ata_queued_cmd *qc)
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page = nth_page(page, (offset >> PAGE_SHIFT));
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offset %= PAGE_SIZE;
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local_irq_save(flags);
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buf = kmap_atomic(page, KM_IRQ0) + offset;
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DPRINTK("data %s\n", qc->tf.flags & ATA_TFLAG_WRITE ? "write" : "read");
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/* do the actual data transfer */
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ata_data_xfer(ap, buf, ATA_SECT_SIZE, do_write);
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local_irq_save(flags);
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buf = kmap_atomic(page, KM_IRQ0);
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kunmap_atomic(buf - offset, KM_IRQ0);
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/* do the actual data transfer */
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ata_data_xfer(ap, buf + offset, ATA_SECT_SIZE, do_write);
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kunmap_atomic(buf, KM_IRQ0);
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local_irq_restore(flags);
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qc->cursect++;
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@ -2952,15 +2952,15 @@ next_sg:
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/* don't cross page boundaries */
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count = min(count, (unsigned int)PAGE_SIZE - offset);
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local_irq_save(flags);
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buf = kmap_atomic(page, KM_IRQ0) + offset;
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DPRINTK("data %s\n", qc->tf.flags & ATA_TFLAG_WRITE ? "write" : "read");
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/* do the actual data transfer */
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ata_data_xfer(ap, buf, count, do_write);
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local_irq_save(flags);
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buf = kmap_atomic(page, KM_IRQ0);
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kunmap_atomic(buf - offset, KM_IRQ0);
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/* do the actual data transfer */
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ata_data_xfer(ap, buf + offset, count, do_write);
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kunmap_atomic(buf, KM_IRQ0);
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local_irq_restore(flags);
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bytes -= count;
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