* 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.
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@xxxxxxxxx>
Index: b/include/linux/ide.h
===================================================================
--- a/include/linux/ide.h
+++ b/include/linux/ide.h
@@ -1098,6 +1098,8 @@ enum {
IDE_HFLAG_CY82C693 = (1 << 27),
/* force host out of "simplex" mode */
IDE_HFLAG_CLEAR_SIMPLEX = (1 << 28),
+ /* DSC overlap is unsupported */
+ IDE_HFLAG_NO_DSC = (1 << 29),
};