ide: add short cables support

This patch allows users to override both host and device side cable detection
with "ideX=ata66" kernel parameter.  Thanks to this it should be now possible
to use UDMA > 2 modes on systems (laptops mainly) which use short 40-pin cable
instead of 80-pin one.

Next patches add automatic detection of some systems using short cables.

Changes:

* Rename hwif->udma_four to hwif->cbl and make it u8.

* Convert all existing users accordingly (use ATA_CBL_* defines while at it).  

* Add ATA_CBL_PATA40_SHORT support to ide-iops.c:eighty_ninty_three().

* Use ATA_CBL_PATA40_SHORT for "ideX=ata66" kernel parameter.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Reviewed-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/drivers/ide/cris/ide-cris.c b/drivers/ide/cris/ide-cris.c
index ca0341c05e55..886091bc7db0 100644
--- a/drivers/ide/cris/ide-cris.c
+++ b/drivers/ide/cris/ide-cris.c
@@ -819,7 +819,7 @@ init_e100_ide (void)
                 hwif->dma_host_off = &cris_dma_off;
                 hwif->dma_host_on = &cris_dma_on;
                 hwif->dma_off_quietly = &cris_dma_off;
-                hwif->udma_four = 0;
+                hwif->cbl = ATA_CBL_PATA40;
                 hwif->ultra_mask = cris_ultra_mask;
                 hwif->mwdma_mask = 0x07; /* Multiword DMA 0-2 */
                 hwif->autodma = 1;