linux-kernel - RE: [Intel-wired-lan] [PATCH net-queue 2/3] e1000e: Fix queue interrupt re-raising in Other interrupt.

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Date:   Thu, 15 Feb 2018 03:23:36 +0000
From:   "Brown, Aaron F" <aaron.f.brown@...el.com>
To:     Benjamin Poirier <bpoirier@...e.com>,
        "Kirsher, Jeffrey T" <jeffrey.t.kirsher@...el.com>
CC:     "netdev@...r.kernel.org" <netdev@...r.kernel.org>,
        "intel-wired-lan@...ts.osuosl.org" <intel-wired-lan@...ts.osuosl.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: RE: [Intel-wired-lan] [PATCH net-queue 2/3] e1000e: Fix queue
 interrupt re-raising in Other interrupt.

> From: Intel-wired-lan [mailto:intel-wired-lan-bounces@...osl.org] On
> Behalf Of Benjamin Poirier
> Sent: Wednesday, February 7, 2018 10:47 PM
> To: Kirsher, Jeffrey T <jeffrey.t.kirsher@...el.com>
> Cc: netdev@...r.kernel.org; intel-wired-lan@...ts.osuosl.org; linux-
> kernel@...r.kernel.org
> Subject: [Intel-wired-lan] [PATCH net-queue 2/3] e1000e: Fix queue
> interrupt re-raising in Other interrupt.
> 
> restores the ICS write for rx/tx queue interrupts which was present before
> commit 16ecba59bc33 ("e1000e: Do not read ICR in Other interrupt",
> v4.5-rc1) but was not restored in commit 4aea7a5c5e94 ("e1000e: Avoid
> receiver overrun interrupt bursts", v4.15-rc1).
> 
> This re-raises the queue interrupts in case the txq or rxq bits were set in
> ICR and the Other interrupt handler read and cleared ICR before the queue
> interrupt was raised.
> 
> Fixes: 4aea7a5c5e94 ("e1000e: Avoid receiver overrun interrupt bursts")
> Signed-off-by: Benjamin Poirier <bpoirier@...e.com>
> ---
>  drivers/net/ethernet/intel/e1000e/netdev.c | 3 +++
>  1 file changed, 3 insertions(+)

Tested-by: Aaron Brown <aaron.f.brown@...el.com>