On 02/21/2010 04:11 AM, Cengiz Günay wrote:
>> Does the attached patch make any difference?
>
> Not that I can tell. I still get an infinite loop of ata4 errors. I
> attached a full dmesg output with the patch. Note that I have both the
> patches disable-clear-ua and drain-from-atapi-pio-bytes applied at the
> same time.
Hmmm... So, DRQ gets cleared? That's strange. When then the 18 extra
bytes happen? Can you please try this one?
--
tejun
diff --git a/drivers/ata/sata_nv.c b/drivers/ata/sata_nv.c
index 0c82d33..ae63b0b 100644
--- a/drivers/ata/sata_nv.c
+++ b/drivers/ata/sata_nv.c
@@ -585,7 +585,7 @@ static const struct ata_port_info nv_port_info[] = {
/* SWNCQ */
{
.flags = ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY |
- ATA_FLAG_NCQ,
+ ATA_FLAG_NCQ | ATA_FLAG_PIO_POLLING,
.pio_mask = NV_PIO_MASK,
.mwdma_mask = NV_MWDMA_MASK,
.udma_mask = NV_UDMA_MASK,
