From: Bartlomiej Zolnierkiewicz <bzolnier@xxxxxxxxx>
Subject: [PATCH] ide: add IDE_HFLAG_4DRIVES host flag
Add IDE_HFLAG_4DRIVES host flag and use it instead of ide_4drives
chipset type in ide_init_port().
There should be no functional changes caused by this patch.
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@xxxxxxxxx>
---
drivers/ide/ide-4drives.c | 3 ++-
drivers/ide/ide-probe.c | 4 ++--
include/linux/ide.h | 2 ++
3 files changed, 6 insertions(+), 3 deletions(-)
Index: b/drivers/ide/ide-4drives.c
===================================================================
--- a/drivers/ide/ide-4drives.c
+++ b/drivers/ide/ide-4drives.c
@@ -23,7 +23,8 @@ static const struct ide_port_ops ide_4dr
static const struct ide_port_info ide_4drives_port_info = {
.port_ops = &ide_4drives_port_ops,
- .host_flags = IDE_HFLAG_SERIALIZE | IDE_HFLAG_NO_DMA,
+ .host_flags = IDE_HFLAG_SERIALIZE | IDE_HFLAG_NO_DMA |
+ IDE_HFLAG_4DRIVES,
};
static int __init ide_4drives_init(void)
Index: b/drivers/ide/ide-probe.c
===================================================================
--- a/drivers/ide/ide-probe.c
+++ b/drivers/ide/ide-probe.c
@@ -1352,8 +1352,8 @@ int ide_host_register(struct ide_host *h
if (ide_probe_port(hwif) == 0)
hwif->present = 1;
- if (hwif->chipset != ide_4drives || !hwif->mate ||
- !hwif->mate->present)
+ if ((hwif->host_flags & IDE_HFLAG_4DRIVES) == 0 ||
+ hwif->mate == NULL || hwif->mate->present == 0)
ide_register_port(hwif);
if (hwif->present)
Index: b/include/linux/ide.h
===================================================================
--- a/include/linux/ide.h
+++ b/include/linux/ide.h
@@ -1324,6 +1324,8 @@ enum {
IDE_HFLAG_SERIALIZE = (1 << 20),
/* host is DTC2278 */
IDE_HFLAG_DTC2278 = (1 << 21),
+ /* 4 devices on a single set of I/O ports */
+ IDE_HFLAG_4DRIVES = (1 << 22),
/* host is TRM290 */
IDE_HFLAG_TRM290 = (1 << 23),
/* use 32-bit I/O ops */
--
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