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authorKumar Gala <galak@kernel.crashing.org>2006-03-24 03:18:21 -0800
committerLinus Torvalds <torvalds@g5.osdl.org>2006-03-24 07:33:28 -0800
commit208a08f7cc2a8932ed76162d9844f9ae7d7fc015 (patch)
tree6f0eb837cf8c1ce131c93ecf52476046519c5969 /include
parentf751d50f6dea1446797c9a31f5c183002e5780a8 (diff)
downloadlinux-208a08f7cc2a8932ed76162d9844f9ae7d7fc015.tar.bz2
[PATCH] ide: Allow IDE interface to specify its not capable of 32-bit operations
In some embedded systems the IDE hardware interface may only support 16-bit or smaller accesses. Allow the interface to specify if this is the case and don't allow the drive or user to override the setting. Signed-off-by: Kumar Gala <galak@kernel.crashing.org> Acked-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com> Cc: Alan Cox <alan@lxorguk.ukuu.org.uk> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'include')
-rw-r--r--include/linux/ide.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/ide.h b/include/linux/ide.h
index a7fc4cc79b23..8d2db412ba9c 100644
--- a/include/linux/ide.h
+++ b/include/linux/ide.h
@@ -792,6 +792,7 @@ typedef struct hwif_s {
unsigned no_dsc : 1; /* 0 default, 1 dsc_overlap disabled */
unsigned auto_poll : 1; /* supports nop auto-poll */
unsigned sg_mapped : 1; /* sg_table and sg_nents are ready */
+ unsigned no_io_32bit : 1; /* 1 = can not do 32-bit IO ops */
struct device gendev;
struct completion gendev_rel_comp; /* To deal with device release() */