linux-kernel - Re: Re: Re: 2.6.19-rc5: known regressions :SMP kernel can not generate ISA irq

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Date:	Fri, 10 Nov 2006 21:42:50 +0900 (JST)
From:	Komuro <komurojun-mbn@...ty.com>
To:	Linus Torvalds <torvalds@...l.org>
Cc:	tglx@...utronix.de, Adrian Bunk <bunk@...sta.de>,
	Andrew Morton <akpm@...l.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	mingo@...hat.com
Subject: Re: Re: Re: 2.6.19-rc5: known regressions :SMP kernel can not generate ISA irq

Hi,

>> Intel ISA PCIC probe: 
>>   Intel i82365sl B step ISA-to-PCMCIA at port 0x3e0 ofs 0x00, 2 sockets
>>     host opts [0]: none
>>     host opts [1]: none
>>     ISA irqs (scanned) = 3,4,5,7,9,11,15 status change on irq 15
>
>This definitely means that the IRQ subsystem works, at least here. That 
>"scanned" means that the PCMCIA driver actually tested those interrupts, 
>and they worked.
>
>At that point, at least.
>
>Of course, the "they worked" test is fairly simple, so it's by no means 
>foolproof, but in general, it does sound like it all really should be ok.
>
>
>But testing 2.6.19-rc5 is still worth it. The APIC fixes might fix it, or 
>some other changes might.
>
>		Linus

I tried the 2.6.19-rc5,  the problem still happens.

But,
I remove the disable_irq_nosync() , enable_irq()
from the linux/drivers/net/pcmcia/axnet_cs.c
the interrupt is generated properly.

So I think enable_irq does not enable the irq.

Thanks!

Best Regards
Komuro



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