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Commit 278ecfb8 authored by Tejun Heo's avatar Tejun Heo Committed by Bartlomiej Zolnierkiewicz
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ide: note that IDE generic may prevent other drivers from attaching 



Enabling IDE generic may prevent ATA controllers located on legacy
ports from being attached to more proper driver or can prevent other
controllers which share the IRQ from working.  Note it in the help
message.

Signed-off-by: default avatarTejun Heo <tj@kernel.org>
Cc: xerces8 <xerces8@butn.net>
Cc: Jeff Garzik <jgarzik@pobox.com>
Cc: stein@hermes.si
[bart: s/will grab/may grab/ since Borislav has fixed PCI-case for .28]
Signed-off-by: default avatarBartlomiej Zolnierkiewicz <bzolnier@gmail.com>
parent 801bd32e

drivers/ide/Kconfig

+14 −0
Original line number Diff line number Diff line
@@ -292,6 +292,20 @@ config IDE_GENERIC 
	tristate "generic/default IDE chipset support"

	depends on ALPHA || X86 || IA64 || M32R || MIPS

	help

	  This is the generic IDE driver.  This driver attaches to the

	  fixed legacy ports (e.g. on PCs 0x1f0/0x170, 0x1e8/0x168 and

	  so on).  Please note that if this driver is built into the

	  kernel or loaded before other ATA (IDE or libata) drivers

	  and the controller is located at legacy ports, this driver

	  may grab those ports and thus can prevent the controller

	  specific driver from attaching.



	  Also, currently, IDE generic doesn't allow IRQ sharing

	  meaning that the IRQs it grabs won't be available to other

	  controllers sharing those IRQs which usually makes drivers

	  for those controllers fail.  Generally, it's not a good idea

	  to load IDE generic driver on modern systems.



	  If unsure, say N.



config BLK_DEV_PLATFORM