>>>>> On Tue, 15 Apr 2003 18:25:38 +0200 (MET DST), "Maciej W. Rozycki" <macro@ds2.pg.gda.pl> said: >> I remember that some of the Toshiba parts of the TX39 series >> had some interesting quirks relating to the write buffer. Perhaps >> some of these were carried into the TX49 series as well? macro> I suppose that's unrelated, since I'm specifically referring to macro> the way the buffer is handled in the TOSHIBA_RBTX4927 code -- macro> the __wbflush() backend is not invoked by wbflush() and calls macro> like mb() (used by portable drivers) unless the kernel is macro> configured in an unobvious way and then there is duplicate macro> "sync" (but maybe that's needed, thus my question among macro> others). I suppose it's just because the code was written before CONFIG_CPU_HAS_SYNC was introduced. AFAIK TX49's SYNC instruction correctly flushes the write buffer. No bc0f loop is required. --- Atsushi Nemoto
