Hi, No, canot support this. What happens if there is an interrupt immediately after the first two reads - before the test on tsf_lower? - and thisinterrupt lasts longer than 100us ? Most often, this is ok - until the interrupt happens at the wrong time.
OR, there is a TSF merge event after the tsf_upper has been read, but before the tsf_lower has been read? The tsf merge (which is done by the hardware), adjusted both the high and low registers. Derek. On Sun, 28 Feb 2010, Benoit Papillault wrote: > + > + tsf_upper = ath5k_hw_reg_read(ah, AR5K_TSF_U32); > + tsf_lower = ath5k_hw_reg_read(ah, AR5K_TSF_L32); > + > + if (tsf_lower < 100) > + tsf_upper = ath5k_hw_reg_read(ah, AR5K_TSF_U32); > + > ATH5K_TRACE(ah->ah_sc); > > - return ath5k_hw_reg_read(ah, AR5K_TSF_L32) | (tsf << 32); > + return (((u64)tsf_upper << 32) | tsf_lower); > } > > /** > -- Derek Smithies Ph.D. IndraNet Technologies Ltd. ph +64 3 365 6485 Web: http://www.indranet-technologies.com/ "The only thing IE should be used for is to download Fire Fox" "My favorite language is call STAR. It's extremely concise. It has exactly one verb '*', which does exactly what I want at the moment." --Larry Wall _______________________________________________ ath5k-devel mailing list ath5k-devel@lists.ath5k.org https://lists.ath5k.org/mailman/listinfo/ath5k-devel
