linux-kernel - Re: [PATCH] GIC: Dont disable INT in ack callback

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Message-ID: <20100724103027.GA3336@debian>
Date:	Sat, 24 Jul 2010 16:00:27 +0530
From:	Rabin Vincent <rabin@....in>
To:	Jeff Ohlstein <johlstei@...eaurora.org>
Cc:	linux@....linux.org.uk, linux-arm-msm@...r.kernel.org,
	Abhijeet Dharmapurikar <adharmap@...eaurora.org>,
	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] GIC: Dont disable INT in ack callback

On Thu, Jul 22, 2010 at 03:57:30PM -0700, Jeff Ohlstein wrote:
> Unless gic_ack_irq is called from __do_IRQ, interrupt should not
> be disabled in the ack function. Disabling the interrupt causes
> handle_edge_irq to never enable it again.

The GIC doesn't use handle_edge_irq.

Anyway, this change is correct since gic_ack_irq is currently doing a
maskack, when it should be just an ack.  However, since
GENERIC_HARDIRQS_NO__DO_IRQ is always true on ARM, I don't see a need to
add the ifndef.
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