ide: add port and host iterators

Add ide_port_for_each_dev() / ide_host_for_each_port() iterators
and update IDE code to use them.

While at it:
- s/unit/i/ variable in ide_port_wait_ready(), ide_probe_port(),
  ide_port_tune_devices(), ide_port_init_devices_data(), do_reset1(),
  ide_acpi_set_state() and scc_dma_end()
- s/d/i/ variable in ide_proc_port_register_devices()

There should be no functional changes caused by this patch.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>

1 files changed, 4 insertions, 4 deletions

diff --git a/drivers/ide/scc_pata.c b/drivers/ide/scc_pata.c
index 841164d7d3b..5d53850c79d 100644
--- a/drivers/ide/scc_pata.c
+++ b/drivers/ide/scc_pata.c
@@ -406,17 +406,17 @@ static int scc_dma_end(ide_drive_t *drive)
 			data_loss = 1;
 			if (retry++) {
 				struct request *rq = hwif->rq;
-				int unit;
+				ide_drive_t *drive;
+				int i;
+
 				/* ERROR_RESET and drive->crc_count are needed
 				 * to reduce DMA transfer mode in retry process.
 				 */
 				if (rq)
 					rq->errors |= ERROR_RESET;
-				for (unit = 0; unit < MAX_DRIVES; unit++) {
-					ide_drive_t *drive = hwif->devices[unit];
 
+				ide_port_for_each_dev(i, drive, hwif)
 					drive->crc_count++;
-				}
 			}
 		}
 	}