netdev - Re: [PATCH v3 net-next 1/1] drivers: net: davinci

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Message-ID: <5141A625.8000704@mimc.co.uk>
Date:	Thu, 14 Mar 2013 10:27:49 +0000
From:	Mark Jackson <mpfj-list@...c.co.uk>
To:	Mugunthan V N <mugunthanvnm@...com>
CC:	netdev@...r.kernel.org, davem@...emloft.net,
	linux-arm-kernel@...ts.infradead.org, linux-omap@...r.kernel.org
Subject: Re: [PATCH v3 net-next 1/1] drivers: net: davinci_cpdma: acknowledge
 interrupt properly

On 14/03/13 10:21, Mugunthan V N wrote:
> On 3/13/2013 3:04 PM, Mark Jackson wrote:
>> On 18/02/13 08:19, Mugunthan V N wrote:
>>> >CPDMA interrupts are not properly acknowledged which leads to interrupt
>>> >storm, only cpdma interrupt 0 is acknowledged in Davinci CPDMA driver.
>>> >Changed cpdma_ctlr_eoi api to acknowledge 1 and 2 interrupts which are
>>> >used for rx and tx respectively.
>>> >
>>> >Reported-by: Pantelis Antoniou<panto@...oniou-consulting.com>
>>> >Signed-off-by: Mugunthan V N<mugunthanvnm@...com>
>> Not sure if I'm seeing this same problem [1], but it doesn't appear fixed to me.
>>
>> I've tried both mainline -rc2 and -next.
>>
>> [1]https://lkml.org/lkml/2013/3/12/376
> Without this patch, PG2.0 was not usable as CPSW interrupt was never acked
> and CPU spent most of the time in CPSW ISR.
> 
> I have checked -rc2 and it is working fine.

I needed to add patch [1] to fix my problem.  See thread [2].

[1] https://git.kernel.org/cgit/linux/kernel/git/davem/net.git/commit/?id=d35162f89b8f00537d7b240b76d2d0e8b8d29aa0
[2] https://lkml.org/lkml/2013/3/13/146

Cheers
Mark J.
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