Messages in this thread | | | Date | Tue, 6 May 2003 15:06:12 +0200 | From | Karsten Keil <> | Subject | Re: ISDN massive packet drops while DVD burn/verify |
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On Tue, May 06, 2003 at 02:39:02PM +0200, Stephan von Krawczynski wrote: > On 06 May 2003 11:53:32 +0100 > Alan Cox <alan@lxorguk.ukuu.org.uk> wrote: > > > On Llu, 2003-05-05 at 18:26, Stephan von Krawczynski wrote: > > > You mean UDMA 2 does not make it (which I had in the test case)? > > > > But is the transfer being done in UDMA mode ? > > > # hdparm -v /dev/hdc > > /dev/hdc: > HDIO_GET_MULTCOUNT failed: Invalid argument > IO_support = 0 (default 16-bit) > unmaskirq = 0 (off) > using_dma = 1 (on) > keepsettings = 0 (off) > readonly = 0 (off) > BLKRAGET failed: Invalid argument > HDIO_GETGEO failed: Invalid argument > > > using_dma means it's using dma for transfer, right? >
It should, but so far I know it cannot do every thing with dma. My writer use:
pingi2:~ # hdparm -v /dev/hdc
/dev/hdc: HDIO_GET_MULTCOUNT failed: Input/output error IO_support = 1 (32-bit) unmaskirq = 1 (on) using_dma = 0 (off) keepsettings = 0 (off) readonly = 0 (off) BLKRAGET failed: Input/output error HDIO_GETGEO failed: Invalid argument
And I see no problems.
At least you can try hdparm -u1 (use a RW media).
-- Karsten Keil SuSE Labs ISDN development - 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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