ide: remove the PCI_DMA_BUS_IS_PHYS check

Christoph Hellwig · Christoph Hellwig · commit 164c3d091292 · 2018-05-07T07:15:41.000+02:00
We now have ways to deal with drainage in the block layer, and libata has
been using it for ages.  We also want to get rid of PCI_DMA_BUS_IS_PHYS
now, so just reduce the PCI transfer size for ide - anyone who cares for
performance on PCI controllers should have switched to libata long ago.

Signed-off-by: Christoph Hellwig &lt;hch@lst.de&gt;
Reviewed-by: Jens Axboe &lt;axboe@kernel.dk&gt;
diff --git a/drivers/ide/ide-probe.c b/drivers/ide/ide-probe.c
@@ -796,8 +796,7 @@ static int ide_init_queue(ide_drive_t *drive)
 	 * This will be fixed once we teach pci_map_sg() about our boundary
 	 * requirements, hopefully soon. *FIXME*
 	 */
-	if (!PCI_DMA_BUS_IS_PHYS)
-		max_sg_entries >>= 1;
+	max_sg_entries >>= 1;
 #endif /* CONFIG_PCI */
 
 	blk_queue_max_segments(q, max_sg_entries);
