CONFIG_BLK_DEV_4DRIVES deserves its own host driver:
* Add drivers/ide/legacy/ide-4drives.c and move "4drives" support there.
* Add ide-4drives.o in the link order after all other legacy host
drivers enabled by "ide0=" options (they all are mutually exclusive).
* Make ide-4drives host driver probe itself for IDE devices instead of
indirectly depending on ide_generic host driver.
* Add "probe" module parameter to ide-4drives and update documentation.
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@xxxxxxxxx>
Index: b/drivers/ide/Kconfig
===================================================================
--- a/drivers/ide/Kconfig
+++ b/drivers/ide/Kconfig
@@ -1042,8 +1042,8 @@ config BLK_DEV_4DRIVES
Certain older chipsets, including the Tekram 690CD, use a single set
of I/O ports at 0x1f0 to control up to four drives, instead of the
customary two drives per port. Support for this can be enabled at
- runtime using the "ide0=four" kernel boot parameter if you say Y
- here.
+ runtime using the "ide_4drives.probe" kernel boot parameter if you