netdev - RE: [PATCH net-next] be2net: fix unconditionally returning IRQ

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Message-ID: <CF9D1877D81D214CB0CA0669EFAE020C0F1F0CD6@RVEXMB1.ad.emulex.com>
Date:	Sat, 12 Jan 2013 16:29:36 +0000
From:	"Perla, Sathya" <Sathya.Perla@...lex.Com>
To:	David Miller <davem@...emloft.net>
CC:	"netdev@...r.kernel.org" <netdev@...r.kernel.org>
Subject: RE: [PATCH net-next] be2net: fix unconditionally returning
 IRQ_HANDLED in INTx

>-----Original Message-----
>From: David Miller [mailto:davem@...emloft.net]
>
>From: Sathya Perla <sathya.perla@...lex.com>
>Date: Sat, 12 Jan 2013 14:17:02 +0530
>
>> commit e49cc34f introduced an unconditional IRQ_HANDLED return in be_intx()
>> to workaround Lancer and BE2 HW issues. This is bad as it prevents the kernel
>> from detecting interrupt storms due to broken HW.
>>
...
>> Issue (1) can cause the notified events to be orphaned, if NAPI was already
>> running.
>> This patch fixes this issue by scheduling NAPI only if it is not scheduled
>> already. Doing this also takes care of possible events_get() race that may be
>> caused due to issue (2) and (3). Also, IRQ_HANDLED is returned only the first
>> time zero events are detected.
>> (Thanks Ben H. for the feedback and suggestions.)
>>
>> Signed-off-by: Sathya Perla <sathya.perla@...lex.com>
>
>Any particular reason why we shouldn't put this fix into 'net' instead
>of 'net-next'?

Dave, this fix can surely go into "net" as the previous commit is already in Linus tree....
I guess I requested "net-next" just out of habit.

thanks,
-Sathya 
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