[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 at intel.com>