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

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Message-ID: <m2hax2qeqs.fsf@igel.home>
Date:	Mon, 02 Apr 2012 18:29:15 +0200
From:	Andreas Schwab <schwab@...ux-m68k.org>
To:	Grant Likely <grant.likely@...retlab.ca>
Cc:	linux-kernel@...r.kernel.org, linuxppc-dev@...ts.ozlabs.org,
	devicetree-discuss@...ts.ozlabs.org,
	linux-arm-kernel@...ts.infradead.org,
	Benjamin Herrenschmidt <benh@...nel.crashing.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	Milton Miller <miltonm@....com>,
	Rob Herring <rob.herring@...xeda.com>
Subject: Re: [PATCH v5 06/27] irq_domain/powerpc: eliminate irq_map; use irq_alloc_desc() instead

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
interrupts.  Also the X server is broken somehow, though I don't know
whether that is related or a different bug.

Andreas.

-- 
Andreas Schwab, schwab@...ux-m68k.org
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