[Intel-wired-lan] [PATCH] igb: Clear TSICR interrupts together with ICR

[Intel-wired-lan] [PATCH] igb: Clear TSICR interrupts together with ICR

[Joanna Yurdal]

I have been working with the PTP using IGB i210 and the linux driver
can end up in a state where it stops receiving E1000_ICR_TS interrupt.
The ethernet driver works fine but PPS stops and no tx ptp timestamp
can be retrieved. This is caused by not clearing the TS interrupt before enabling igb interrupts in the igb_up function.

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[Intel-wired-lan] [PATCH] igb: Clear TSICR interrupts together with ICR

[Brown, Aaron F]

> From: Intel-wired-lan [mailto:intel-wired-lan-bounces at osuosl.org] On
> Behalf Of Joanna Yurdal
> Sent: Wednesday, May 16, 2018 4:14 AM
> To: intel-wired-lan at lists.osuosl.org
> Subject: [Intel-wired-lan] [PATCH] igb: Clear TSICR interrupts together with
> ICR
> 
> I have been working with the PTP using IGB i210 and the linux driver
> can end up in a state where it stops receiving E1000_ICR_TS interrupt.
> The ethernet driver works fine but PPS stops and no tx ptp timestamp
> can be retrieved. This is caused by not clearing the TS interrupt before
> enabling igb interrupts in the igb_up function.

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