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authorAdrian Bunk <bunk@kernel.org>2008-07-16 20:33:47 +0200
committerBartlomiej Zolnierkiewicz <bzolnier@gmail.com>2008-07-16 20:33:47 +0200
commit453ea3ed0b3e8ad67d4ee9d2fccf3d95a3e1f709 (patch)
tree359db77d614ee17d948a9e9fc318174c12e96377 /drivers/block/Kconfig
parent01c22bfc30a3f40fed08cfd2779348edcb6c5e53 (diff)
move ide/legacy/hd.c to drivers/block/
This patch moves hd.c to drivers/block/ Signed-off-by: Adrian Bunk <bunk@kernel.org> Cc: rmk@arm.linux.org.uk Cc: Alan Cox <alan@lxorguk.ukuu.org.uk> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Diffstat (limited to 'drivers/block/Kconfig')
-rw-r--r--drivers/block/Kconfig24
1 files changed, 24 insertions, 0 deletions
diff --git a/drivers/block/Kconfig b/drivers/block/Kconfig
index 0d1d2133d9bc..c3909743c484 100644
--- a/drivers/block/Kconfig
+++ b/drivers/block/Kconfig
@@ -433,4 +433,28 @@ config VIRTIO_BLK
This is the virtual block driver for virtio. It can be used with
lguest or QEMU based VMMs (like KVM or Xen). Say Y or M.
+config BLK_DEV_HD
+ bool "Old hard disk (MFM/RLL/IDE) driver"
+ depends on HAVE_IDE
+ depends on !ARM || ARCH_RPC || ARCH_SHARK || BROKEN
+ 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
+ reasons. Some older systems have strange timing problems and seem to
+ work only with the old driver (which itself does not work with some
+ newer systems). The other reason is that the old driver is smaller,
+ since it lacks the enhanced functionality of the new one. This makes
+ it a good choice for systems with very tight memory restrictions, or
+ 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>.
+
endif # BLK_DEV