Messages in this thread | | | Date | Tue, 6 Aug 2002 13:58:11 -0700 | From | Jonathan Lundell <> | Subject | Re: OSB4 issues on 2.4.19-ac4 |
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At 11:01 PM +0100 8/6/02, Alan Cox wrote: >On Tue, 2002-08-06 at 19:55, Samuel Flory wrote: >> It appears that the OSB4 ide controller isn't working on ac4. I have >> a Tyan 2515, and 2518 which hang when dma is enabled. > >DMA enabled by you or by the driver. Right now the driver isnt supposed >to be enabling DMA on OSB4
FWIW, we're building systems with OSB4s, and can consistently generate the advertised IDE corruption if we enable Ultra DMA (this is with RH 2.4.9-31, which has an extra OSB4 warning message; the message correlates with on-disk corruption).
After suffering with PIO for a month or three, we did fairly extensive testing with multiword DMA (non-Ultra), and are feeling confident enough about it to leave it turned on. -- /Jonathan Lundell. - 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/
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