diff options
-rw-r--r-- | drivers/block/Kconfig | 26 |
1 files changed, 7 insertions, 19 deletions
diff --git a/drivers/block/Kconfig b/drivers/block/Kconfig index c3909743c484..61ad8d639ba3 100644 --- a/drivers/block/Kconfig +++ b/drivers/block/Kconfig | |||
@@ -434,27 +434,15 @@ config VIRTIO_BLK | |||
434 | lguest or QEMU based VMMs (like KVM or Xen). Say Y or M. | 434 | lguest or QEMU based VMMs (like KVM or Xen). Say Y or M. |
435 | 435 | ||
436 | config BLK_DEV_HD | 436 | config BLK_DEV_HD |
437 | bool "Old hard disk (MFM/RLL/IDE) driver" | 437 | bool "Very old hard disk (MFM/RLL/IDE) driver" |
438 | depends on HAVE_IDE | 438 | depends on HAVE_IDE |
439 | depends on !ARM || ARCH_RPC || ARCH_SHARK || BROKEN | 439 | depends on !ARM || ARCH_RPC || ARCH_SHARK || BROKEN |
440 | help | 440 | help |
441 | There are two drivers for MFM/RLL/IDE hard disks. Most people use | 441 | This is a very old hard disk driver that lacks the enhanced |
442 | the newer enhanced driver, but this old one is still around for two | 442 | functionality of the newer ones. |
443 | reasons. Some older systems have strange timing problems and seem to | 443 | |
444 | work only with the old driver (which itself does not work with some | 444 | It is required for systems with ancient MFM/RLL/ESDI drives. |
445 | newer systems). The other reason is that the old driver is smaller, | 445 | |
446 | since it lacks the enhanced functionality of the new one. This makes | 446 | If unsure, say N. |
447 | it a good choice for systems with very tight memory restrictions, or | ||
448 | for systems with only older MFM/RLL/ESDI drives. Choosing the old | ||
449 | driver can save 13 KB or so of kernel memory. | ||
450 | |||
451 | If you want to use this driver together with the new one you have | ||
452 | to use "hda=noprobe hdb=noprobe" kernel parameters to prevent the new | ||
453 | driver from probing the primary interface. | ||
454 | |||
455 | If you are unsure, then just choose the Enhanced IDE/MFM/RLL driver | ||
456 | instead of this one. For more detailed information, read the | ||
457 | Disk-HOWTO, available from | ||
458 | <http://www.tldp.org/docs.html#howto>. | ||
459 | 447 | ||
460 | endif # BLK_DEV | 448 | endif # BLK_DEV |