From: David Miller <davem@davemloft.net>
To: hau@realtek.com
Cc: netdev@vger.kernel.org, nic_swsd@realtek.com,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH net v4] r8169:fix "rtl_counters_cond == 1 (loop: 1000, delay: 10)" log spam.
Date: Thu, 25 Feb 2016 16:19:47 -0500 (EST) [thread overview]
Message-ID: <20160225.161947.854773663623773324.davem@davemloft.net> (raw)
In-Reply-To: <1456294722-3596-1-git-send-email-hau@realtek.com>
From: Chunhao Lin <hau@realtek.com>
Date: Wed, 24 Feb 2016 14:18:42 +0800
> There will be a log spam when there is no cable plugged. Please refer to
> following links. https://bugzilla.kernel.org/show_bug.cgi?id=104351
> https://bugzilla.kernel.org/show_bug.cgi?id=107421
>
> This issue is caused by runtime power management. When there is no cable
> plugged, the driver will be suspend (runtime suspend) by OS and NIC will be
> put into the D3 state. During this time, if OS call rtl8169_get_stats64()
> to dump tally counter, because NIC is in D3 state, the register value read
> by driver will return all 0xff. This will let driver think tally counter
> flag is not toggled and then sends the warning message "rtl_counters_cond
> == 1 (loop: 1000, delay: 10)" to kernel log.
>
> For fixing this issue, 1.add checking driver's pm runtime status in
> rtl8169_get_stats64(). 2.dump tally counter before going runtime suspend
> for counter accuracy in runtime suspend.
>
> Signed-off-by: Chunhao Lin <hau@realtek.com>
Applied, thanks.
prev parent reply other threads:[~2016-02-25 21:19 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-02-24 6:18 Chunhao Lin
2016-02-24 21:52 ` Francois Romieu
2016-02-25 5:48 ` Hau
2016-02-25 21:19 ` David Miller [this message]
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