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-rw-r--r--drivers/ide/ide-4drives.c3
-rw-r--r--drivers/ide/ide-probe.c4
-rw-r--r--include/linux/ide.h2
3 files changed, 6 insertions, 3 deletions
diff --git a/drivers/ide/ide-4drives.c b/drivers/ide/ide-4drives.c
index 9e85b1ec960..78aca75a2c4 100644
--- a/drivers/ide/ide-4drives.c
+++ b/drivers/ide/ide-4drives.c
@@ -23,7 +23,8 @@ static const struct ide_port_ops ide_4drives_port_ops = {
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)
diff --git a/drivers/ide/ide-probe.c b/drivers/ide/ide-probe.c
index 62270f47468..335322f40c5 100644
--- a/drivers/ide/ide-probe.c
+++ b/drivers/ide/ide-probe.c
@@ -1381,8 +1381,8 @@ int ide_host_register(struct ide_host *host, const struct ide_port_info *d,
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) {
if (ide_register_port(hwif)) {
ide_disable_port(hwif);
continue;
diff --git a/include/linux/ide.h b/include/linux/ide.h
index 732a05f3de0..3d4ba8e95d4 100644
--- a/include/linux/ide.h
+++ b/include/linux/ide.h
@@ -1327,6 +1327,8 @@ 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 */