linux-kernel - Re: [PATCH v5 06/27] irq_domain/powerpc: eliminate irq_map; use irq_alloc

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Date:	Mon, 2 Apr 2012 22:52:34 +0200 (CEST)
From:	Thomas Gleixner <tglx@...utronix.de>
To:	Andreas Schwab <schwab@...ux-m68k.org>
cc:	Grant Likely <grant.likely@...retlab.ca>,
	LKML <linux-kernel@...r.kernel.org>,
	linuxppc-dev@...ts.ozlabs.org, devicetree-discuss@...ts.ozlabs.org,
	LAK <linux-arm-kernel@...ts.infradead.org>,
	Benjamin Herrenschmidt <benh@...nel.crashing.org>,
	Milton Miller <miltonm@....com>,
	Rob Herring <rob.herring@...xeda.com>,
	Russell King <rmk+kernel@....linux.org.uk>
Subject: Re: [PATCH v5 06/27] irq_domain/powerpc: eliminate irq_map; use
 irq_alloc_desc() instead

On Mon, 2 Apr 2012, Andreas Schwab wrote:

> Andreas Schwab <schwab@...ux-m68k.org> writes:
> 
> > Grant Likely <grant.likely@...retlab.ca> writes:
> >
> >> This patch drops the powerpc-specific irq_map table and replaces it with
> >> directly using the irq_alloc_desc()/irq_free_desc() interfaces for allocating
> >> and freeing irq_desc structures.
> >
> > This breaks irqs on PowerMac G5.  I see lost irq errors from the sata
> > driver.
> 
> When I revert a09b659cd68c10ec6a30cb91ebd2c327fcd5bfe5 ("genirq: Fix
> long-term regression in genirq irq_set_irq_type() handling") on top of
> 3.4-rc1 the sata irq errors disappear, but I see a lot of spurious

Hmm. Which irq chip is handling the interrupt for that sata irq ?

Thanks,

	tglx
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