Messages in this thread | | | Date | Thu, 01 May 2008 23:24:40 +0200 | From | Martin MOKREJŠ <> | Subject | Re: 2.6.23.17 & 2.6.24.5 and maybe earlier: pata_marvell: need to disable DMA to get rid of '(ATA bus error)', 'ata7.00: status: { DRDY ERR }', 'ata7.00: error: { ICRC ABRT }' |
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Hi Alan,
Alan Cox wrote: >> To get rid of the errors, I can use libata.dma=0 kernel >> command-line parameter. Unfortunately, this sets all libata >> devices to PIO4 mode. How can I set just this one? I tried >> 'libata.force=7.00:pio4' but it did not help. > > libata.dma=3 will stop DMA being used for CF devices (except those that > decide to pretend to be ATA classes). This one comes up a lot as many CF > adapters are simply not adequate for UDMA. > >> Where are the flags documented? linux/Documentation/ directory >> contains almost nothing about pata_marvell. :( > > The flags are all common across drivers.
Oh, please tell me where can I read more. ;-) What does the number 3 mean? How can I force certain parameters over ata7.00 device only?
Thanks! Maritn
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