After many hours of trial and error I came to the
conclusion, that the problem must be in these lines
in the file drivers/ide/alim15x3.c
#ifdef CONFIG_BLK_DEV_IDEDMA
if (m5229_revision >= 0x20) {
/*
* M1543C or newer for DMAing
*/
hwif->dmaproc = &ali15x3_dmaproc;
#ifdef CONFIG_IDEDMA_AUTO
if (!noautodma)
hwif->autodma = 1;
#endif /* CONFIG_IDEDMA_AUTO */
}
#endif /* CONFIG_BLK_DEV_IDEDMA */
CONFIG_IDEDMA_AUTO will always be turned off by
make *config, but if I enable this option by
changing .config with a texteditor DMA actually
works.
This makes me ask the following questions?
1) Why can't CONFIG_IDEDMA_AUTO be enabled from
make *config?
2) What would it take to fix that?
3) How come DMA works fine with autodma=1, but
hdparm -d1 /dev/hda fails?
-- Kasper Dupont -- der bruger for meget tid på usenet. For sending spam use mailto:razrep@daimi.au.dk or mailto:mcxumhvenwblvtl@skrammel.yaboo.dk - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
This archive was generated by hypermail 2b29 : Tue Jul 30 2002 - 14:00:31 EST