netdev - Re: [PATCH net 1/3] enic: unlock napi busy poll before unmasking intr

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Message-Id: <20150610.234308.85292311787283551.davem@davemloft.net>
Date:	Wed, 10 Jun 2015 23:43:08 -0700 (PDT)
From:	David Miller <davem@...emloft.net>
To:	_govind@....com
Cc:	netdev@...r.kernel.org, ssujith@...co.com, benve@...co.com
Subject: Re: [PATCH net 1/3] enic: unlock napi busy poll before unmasking
 intr

From: Govindarajulu Varadarajan <_govind@....com>
Date: Thu, 11 Jun 2015 11:52:54 +0530

> There is a small window between vnic_intr_unmask() and enic_poll_unlock_napi().
> In this window if an irq occurs and napi is scheduled on different cpu, it tries
> to acquire enic_poll_lock_napi() and hits the following WARN_ON message.
> 
> Fix is to unlock napi_poll before unmasking the interrupt.
 ...
> Signed-off-by: Govindarajulu Varadarajan <_govind@....com>

Applied.
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