Mark Lord wrote:
Workaround for errata SATA#24 in sata_mv.
This errata affects WRITE_MULTI* commands when
the device multi_count produces a DRQ block size >= 4Kbytes.
We work around it here by converting such operations
into ordinary PIO_WRITEs instead.
Note that this might result in a PIO FUA write unavoidably being converted
into a non-FUA write. In practice, any system using FUA is also going
to be
using DMA rather than PIO, so this shouldn't affect anyone in the real
world.
I'm applying this, but I think a follow-up patch would be nice: it
seems like a one-time printk, indicating the FUA conversion is active,
could be a help in case someone does care.
Jeff
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