Commit 127ba289 authored by Matti Linnanvuori's avatar Matti Linnanvuori Committed by Bartlomiej Zolnierkiewicz
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ide/Kconfig: add IDEDISK_MULTI_MODE text adapted from hdparm manual page 



Add IDEDISK_MULTI_MODE text adapted from hdparm manual page.

Signed-off-by: default avatarMatti Linnanvuori <mattilinnanvuori@yahoo.com>
Signed-off-by: default avatarBartlomiej Zolnierkiewicz <bzolnier@gmail.com>
parent 699b052a

drivers/ide/Kconfig

+16 −3
Original line number Diff line number Diff line
@@ -152,9 +152,22 @@ config BLK_DEV_IDEDISK 
	  If unsure, say Y.



config IDEDISK_MULTI_MODE

	bool "Use multi-mode by default"

	help

	  If you get this error, try to say Y here:

	bool "Use multiple sector mode for Programmed Input/Output by default"

	help

	  This setting is irrelevant for most IDE disks, with direct memory

	  access, to which multiple sector mode does not apply. Multiple sector

	  mode is a feature of most modern IDE hard drives, permitting the

	  transfer of multiple sectors per Programmed Input/Output interrupt,

	  rather than the usual one sector per interrupt. When this feature is

	  enabled, it can reduce operating system overhead for disk Programmed

	  Input/Output. On some systems, it also can increase the data

	  throughput of Programmed Input/Output. Some drives, however, seemed

	  to run slower with multiple sector mode enabled. Some drives claimed

	  to support multiple sector mode, but lost data at some settings.

	  Under rare circumstances, such failures could result in massive

	  filesystem corruption.



	  If you get the following error, try to say Y here:



	  hda: set_multmode: status=0x51 { DriveReady SeekComplete Error }

	  hda: set_multmode: error=0x04 { DriveStatusError }