Re: [Linuxptp-devel] igb tsync int handler double acknowledge? (was: Re: [PATCH] PTP subsystem: implement POSIX timer interface)

2016-10-18 Thread Keller, Jacob E
On Tue, 2016-10-18 at 20:47 +0200, Richard Cochran wrote: > On Tue, Oct 18, 2016 at 05:19:51PM +0100, Kieran Tyrrell wrote: > > > > So reading the TSICR register acknowledges the interrupt and clears > > the register. If another tsync interrupt occurs while in the > > interrupt handler, the

[Linuxptp-devel] igb tsync int handler double acknowledge? (was: Re: [PATCH] PTP subsystem: implement POSIX timer interface)

2016-10-18 Thread Kieran Tyrrell
> I have seen the interrupts on the i210 get stuck when stressing the > input time stamp function with a 1 kHz input. The interrupts simply > stop triggering. But your issue sounds different. > > Thanks, > Richard I suspect this may have something to do with double acknowledging the