libata-core: Be a bit more relaxed about early DMA zero devices
I guess Windows didn't care about the command so neither did they Signed-off-by: Alan Cox <alan@redhat.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
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@ -2882,6 +2882,13 @@ static int ata_dev_set_mode(struct ata_device *dev)
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dev->pio_mode <= XFER_PIO_2)
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err_mask &= ~AC_ERR_DEV;
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/* Early MWDMA devices do DMA but don't allow DMA mode setting.
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Don't fail an MWDMA0 set IFF the device indicates it is in MWDMA0 */
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if (dev->xfer_shift == ATA_SHIFT_MWDMA &&
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dev->dma_mode == XFER_MW_DMA_0 &&
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(dev->id[63] >> 8) & 1)
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err_mask &= ~AC_ERR_DEV;
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if (err_mask) {
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ata_dev_printk(dev, KERN_ERR, "failed to set xfermode "
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"(err_mask=0x%x)\n", err_mask);
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@ -3943,9 +3950,6 @@ static const struct ata_blacklist_entry ata_device_blacklist [] = {
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{ "_NEC DV5800A", NULL, ATA_HORKAGE_NODMA },
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{ "SAMSUNG CD-ROM SN-124", "N001", ATA_HORKAGE_NODMA },
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{ "Seagate STT20000A", NULL, ATA_HORKAGE_NODMA },
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{ "IOMEGA ZIP 250 ATAPI", NULL, ATA_HORKAGE_NODMA }, /* temporary fix */
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{ "IOMEGA ZIP 250 ATAPI Floppy",
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NULL, ATA_HORKAGE_NODMA },
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/* Odd clown on sil3726/4726 PMPs */
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{ "Config Disk", NULL, ATA_HORKAGE_NODMA |
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ATA_HORKAGE_SKIP_PM },
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