diff options
| author | Kumar Gala <galak@kernel.crashing.org> | 2006-03-24 12:18:21 +0100 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-03-24 16:33:28 +0100 |
| commit | 208a08f7cc2a8932ed76162d9844f9ae7d7fc015 (patch) | |
| tree | 6f0eb837cf8c1ce131c93ecf52476046519c5969 /drivers/ide | |
| parent | [PATCH] show MCP menu only on ARCH_SA1100 (diff) | |
| download | linux-208a08f7cc2a8932ed76162d9844f9ae7d7fc015.tar.xz linux-208a08f7cc2a8932ed76162d9844f9ae7d7fc015.zip | |
[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 'drivers/ide')
| -rw-r--r-- | drivers/ide/ide-disk.c | 2 | ||||
| -rw-r--r-- | drivers/ide/ide-probe.c | 9 |
2 files changed, 9 insertions, 2 deletions
diff --git a/drivers/ide/ide-disk.c b/drivers/ide/ide-disk.c index e238b7da824b..ccf528d733bf 100644 --- a/drivers/ide/ide-disk.c +++ b/drivers/ide/ide-disk.c @@ -978,8 +978,6 @@ static void idedisk_setup (ide_drive_t *drive) ide_dma_verbose(drive); printk("\n"); - drive->no_io_32bit = id->dword_io ? 1 : 0; - /* write cache enabled? */ if ((id->csfo & 1) || (id->cfs_enable_1 & (1 << 5))) drive->wcache = 1; diff --git a/drivers/ide/ide-probe.c b/drivers/ide/ide-probe.c index 427d1c204174..1b7b4c531bc2 100644 --- a/drivers/ide/ide-probe.c +++ b/drivers/ide/ide-probe.c @@ -858,6 +858,15 @@ static void probe_hwif(ide_hwif_t *hwif) } } } + + for (unit = 0; unit < MAX_DRIVES; ++unit) { + ide_drive_t *drive = &hwif->drives[unit]; + + if (hwif->no_io_32bit) + drive->no_io_32bit = 1; + else + drive->no_io_32bit = drive->id->dword_io ? 1 : 0; + } } static int hwif_init(ide_hwif_t *hwif); |