netdev - Re: [PATCH net-next] be2net: fix INTx ISR for interrupt behaviour on BE2

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Date:	Wed, 28 Nov 2012 11:35:22 -0500 (EST)
From:	David Miller <davem@...emloft.net>
To:	sathya.perla@...lex.com
Cc:	netdev@...r.kernel.org
Subject: Re: [PATCH net-next] be2net: fix INTx ISR for interrupt behaviour
 on BE2

From: Sathya Perla <sathya.perla@...lex.com>
Date: Wed, 28 Nov 2012 11:20:02 +0530

> On BE2 chip, an interrupt may be raised even when EQ is in un-armed state.
> As a result be_intx()::events_get() and be_poll:events_get() can race and
> notify an EQ wrongly.
> 
> Fix this by counting events only in be_poll(). Commit 0b545a629 fixes
> the same issue in the MSI-x path.
> 
> But, on Lancer, INTx can be de-asserted only by notifying num evts. This
> is not an issue as the above BE2 behavior doesn't exist/has never been
> seen on Lancer.
> 
> Signed-off-by: Sathya Perla <sathya.perla@...lex.com>

Applied.
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