ide: remove CONFIG_BLK_DEV_HD_IDE config option (take 2)

* Remove CONFIG_BLK_DEV_HD hack from init_hwif_default()
  ("hda=noprobe hdb=noprobe" kernel parameters should be used
  instead if somebody wishes to use the old "hd" driver).

* Make CONFIG_BLK_DEV_HD_ONLY config option available also when
  IDE subsystem is used and update help entry.

* Remove no longer needed CONFIG_BLK_DEV_HD_IDE config option.

v2:
* Update documentation to suggest "hda=noprobe hdb=noprobe"
  instead of obsoleted "ide0=noprobe".

* Update Documentation/ide/ide.txt.
Signed-off-by: default avatarBartlomiej Zolnierkiewicz <bzolnier@gmail.com>
parent fef39d95
......@@ -184,13 +184,6 @@ provided it is mounted with the default block size of 1024 (as above).
Please pass on any feedback on any of this stuff to the maintainer,
whose address can be found in linux/MAINTAINERS.
Note that if BOTH hd.c and ide.c are configured into the kernel,
hd.c will normally be allowed to control the primary IDE interface.
This is useful for older hardware that may be incompatible with ide.c,
and still allows newer hardware to run on the 2nd/3rd/4th IDE ports
under control of ide.c. To have ide.c also "take over" the primary
IDE port in this situation, use the "command line" parameter: ide0=0x1f0
The IDE driver is modularized. The high level disk/CD-ROM/tape/floppy
drivers can always be compiled as loadable modules, the chipset drivers
can only be compiled into the kernel, and the core code (ide.c) can be
......
......@@ -122,24 +122,6 @@ config BLK_DEV_IDE_SATA
If unsure, say N.
config BLK_DEV_HD_IDE
bool "Use old disk-only driver on primary interface"
depends on (X86 || SH_MPC1211)
---help---
There are two drivers for MFM/RLL/IDE disks. Most people use just
the new enhanced driver by itself. This option however installs the
old hard disk driver to control the primary IDE/disk interface in
the system, leaving the new enhanced IDE driver to take care of only
the 2nd/3rd/4th IDE interfaces. Doing this will prevent you from
having an IDE/ATAPI CD-ROM or tape drive connected to the primary
IDE interface. Choosing this option may be useful for older systems
which have MFM/RLL/ESDI controller+drives at the primary port
address (0x1f0), along with IDE drives at the secondary/3rd/4th port
addresses.
Normally, just say N here; you will then use the new driver for all
4 interfaces.
config BLK_DEV_IDEDISK
tristate "Include IDE/ATA-2 DISK support"
---help---
......@@ -1114,7 +1096,6 @@ endif
config BLK_DEV_HD_ONLY
bool "Old hard disk (MFM/RLL/IDE) driver"
depends on BLK_DEV_IDE=n
help
There are two drivers for MFM/RLL/IDE hard disks. Most people use
the newer enhanced driver, but this old one is still around for two
......@@ -1126,12 +1107,16 @@ config BLK_DEV_HD_ONLY
for systems with only older MFM/RLL/ESDI drives. Choosing the old
driver can save 13 KB or so of kernel memory.
If you want to use this driver together with the new one you have
to use "hda=noprobe hdb=noprobe" kernel parameters to prevent the new
driver from probing the primary interface.
If you are unsure, then just choose the Enhanced IDE/MFM/RLL driver
instead of this one. For more detailed information, read the
Disk-HOWTO, available from
<http://www.tldp.org/docs.html#howto>.
config BLK_DEV_HD
def_bool BLK_DEV_HD_IDE || BLK_DEV_HD_ONLY
def_bool BLK_DEV_HD_ONLY
endif # IDE
......@@ -177,10 +177,6 @@ static void init_hwif_default(ide_hwif_t *hwif, unsigned int index)
memcpy(hwif->io_ports, hw.io_ports, sizeof(hw.io_ports));
hwif->noprobe = !hwif->io_ports[IDE_DATA_OFFSET];
#ifdef CONFIG_BLK_DEV_HD
if (hwif->io_ports[IDE_DATA_OFFSET] == HD_DATA)
hwif->noprobe = 1; /* may be overridden by ide_setup() */
#endif
}
/*
......
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