Re: Is it safe to ignore UDMA BadCRC errors?

[Eric D. Mudama]

On Tue, Dec 30 at 15:30, Jonathan Kamens wrote:
> Eric D. Mudama writes:
> > UDMA modes include a checksum on every transfer, for both reads and
> > writes.
>
> This contradicts what I was told previously by another subscriber to
> this list.
>
> If it is true, then it would appear that the answer to my question "Is
> it save to ignore UDMA BadCRC errors?" is "Yes."  If all transfers are
> checksummed, and if all transfers with bad checksums will be retried
> by the kernel, then occasional checksum errors are harmless because
> they will be retried.  Do you agree?

No, I don't.

Your system may always detect the errors and function happily (as
designed) but to me the $30 for the security of knowing you have 100%
functioning hardware is well worth it.

--eric

--
Eric D. Mudama
edmudama@xxxxxxxxxxxxxxxxxxxxx

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