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[PATCH] irqpoll

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Anyone reporting a stuck IRQ should try these options.  Its effectiveness
varies we've found in the Fedora case.  Quite a few systems with misdescribed
IRQ routing just work when you use irqpoll.  It also fixes up the VIA systems
although thats now fixed with the VIA quirk (which we could just make default
as its what Redmond OS does but Linus didn't like it historically).

A small number of systems have jammed IRQ sources or misdescribes that cause
an IRQ that we have no handler registered anywhere for.  In those cases it
doesn't help.

Signed-off-by: Alan Cox <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
This commit is contained in:
Alan Cox 2005-06-28 20:45:18 -07:00 • committed by Linus Torvalds
commit 200803dfe4
5 changed files with 131 additions and 6 deletions
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15
Documentation/kernel-parameters.txt
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@ -437,6 +437,10 @@ running once the system is up.
Format: {"of[f]" | "sk[ipmbr]"}
See comment in arch/i386/boot/edd.S
edd [EDD]
Format: {"of[f]" | "sk[ipmbr]"}
See comment in arch/i386/boot/edd.S
eicon= [HW,ISDN]
Format: <id>,<membase>,<irq>
@ -622,6 +626,17 @@ running once the system is up.
ips= [HW,SCSI] Adaptec / IBM ServeRAID controller
See header of drivers/scsi/ips.c.
irqfixup [HW]
When an interrupt is not handled search all handlers
for it. Intended to get systems with badly broken
firmware running.
irqpoll [HW]
When an interrupt is not handled search all handlers
for it. Also check all handlers each timer
interrupt. Intended to get systems with badly broken
firmware running.
isapnp= [ISAPNP]
Format: <RDP>, <reset>, <pci_scan>, <verbosity>