From: Daniel Mack <zonque@gmail•com>
To: Mugunthan V N <mugunthanvnm@ti•com>, netdev@vger•kernel.org
Cc: davem@davemloft•net
Subject: Re: [PATCH] net: ethernet: ti/cpsw: do not crash on single-MAC machines during resume
Date: Thu, 14 Nov 2013 13:56:26 +0100 [thread overview]
Message-ID: <5284C87A.60404@gmail.com> (raw)
In-Reply-To: <5284C602.8000103@ti.com>
On 11/14/2013 01:45 PM, Mugunthan V N wrote:
> On Wednesday 13 November 2013 06:23 PM, Daniel Mack wrote:
>> To prevent Oopses, cpsw_suspend() should only soft-reset sliver 1
>> on dual MAC enabled machines.
>>
>> Signed-off-by: Daniel Mack <zonque@gmail•com>
>> ---
>> drivers/net/ethernet/ti/cpsw.c | 5 ++++-
>> 1 file changed, 4 insertions(+), 1 deletion(-)
>>
>> diff --git a/drivers/net/ethernet/ti/cpsw.c b/drivers/net/ethernet/ti/cpsw.c
>> index edd3e79..702b063 100644
>> --- a/drivers/net/ethernet/ti/cpsw.c
>> +++ b/drivers/net/ethernet/ti/cpsw.c
>> @@ -2173,8 +2173,11 @@ static int cpsw_suspend(struct device *dev)
>>
>> if (netif_running(ndev))
>> cpsw_ndo_stop(ndev);
>> +
>> soft_reset("sliver 0", &priv->slaves[0].sliver->soft_reset);
>> - soft_reset("sliver 1", &priv->slaves[1].sliver->soft_reset);
>> + if (priv->data.dual_emac)
>> + soft_reset("sliver 1", &priv->slaves[1].sliver->soft_reset);
>
> Is this tested on a system with both ports in switch mode?
Nope. I got an Ooops when I tried to suspend a machine that has only one
slave configured in DTS.
> I don't think this will not work with both ports in switch mode.
Why? Isn't priv->data.dual_emac in that case? The same condition is
checked for in cpsw_remove().
Thanks,
Daniel
next prev parent reply other threads:[~2013-11-14 12:56 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-11-13 12:53 [PATCH] net: ethernet: ti/cpsw: do not crash on single-MAC machines during resume Daniel Mack
2013-11-14 12:45 ` Mugunthan V N
2013-11-14 12:56 ` Daniel Mack [this message]
2013-11-14 13:09 ` Mugunthan V N
2013-11-15 7:01 ` Daniel Mack
2013-11-14 21:21 ` David Miller
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