ide: add IDE_HFLAG_NO_DSC host flag

* Add IDE_HFLAG_NO_DSC host flag for hosts that doesn't support DSC overlap.

* Set it in aec62xx (for ATP850UF only) and hpt34x host drivers.

* Convert ide-tape device driver to check for IDE_HFLAG_NO_DSC flag.

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

1 files changed, 1 insertions, 0 deletions

diff --git a/drivers/ide/pci/aec62xx.c b/drivers/ide/pci/aec62xx.c
index 7f4d1857d555..15597597740f 100644
--- a/drivers/ide/pci/aec62xx.c
+++ b/drivers/ide/pci/aec62xx.c
@@ -202,6 +202,7 @@ static const struct ide_port_info aec62xx_chipsets[] __devinitdata = {
                 .enablebits     = {{0x4a,0x02,0x02}, {0x4a,0x04,0x04}},
                 .host_flags     = IDE_HFLAG_SERIALIZE |
                                   IDE_HFLAG_NO_ATAPI_DMA |
+                                  IDE_HFLAG_NO_DSC |
                                   IDE_HFLAG_ABUSE_SET_DMA_MODE |
                                   IDE_HFLAG_OFF_BOARD,
                 .pio_mask       = ATA_PIO4,