On Tue, 2013-03-19 at 15:42 +0100, Jiri Benc wrote: > For 82576 MAC type, max_adj is reported as 1000000000 ppb. However, if > this value is passed to igb_ptp_adjfreq_82576, incvalue overflows out > of > INCVALUE_82576_MASK, resulting in setting of zero TIMINCA.incvalue, > stopping > the PHC (instead of going at twice the nominal speed). > > Fix the advertised max_adj value to the largest value hardware can > handle. > As there is no min_adj value available (-max_adj is used instead), > this will > also prevent stopping the clock intentionally. It's probably not a big > deal, > other igb MAC types don't support stopping the clock, either. > > Signed-off-by: Jiri Benc <[email protected]> > --- > drivers/net/ethernet/intel/igb/igb_ptp.c | 2 +- > 1 files changed, 1 insertions(+), 1 deletions(-)
Thanks Jiri, I have added the patch to my igb queue
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