Re: [PATCH upstream-fixes] libata: disable NCQ on Crucial C300 SSD

[Jeff Garzik <jeff@garzik.org>]

On 04/04/2010 09:51 PM, Tejun Heo wrote:
> Crucial said,
>
>    Thank you for contacting us. We know that with our M225 line of SSDs
>    you sometimes need to disable NCQ (native command queuing) to avoid
>    just the type of errors you're seeing. Our recommendation for the
>    M225 is to add libata.force=noncq to your Linux kernel boot options,
>    under the kernel ATA library option.
>
>    I have sent your feedback to the engineers working on the C300, and
>    asked them to please pass it on to the firmware team. I have been
>    notified that they are in the process of testing and finalizing a
>    new firmware version, that you can expect to see released around the
>    end of April. We’ll keep you posted as to when it will be available
>    for download.
>
> So, turn off NCQ on the drive w/ the current firmware revision.
>
> Reported in the following bug.
>
>    https://bugzilla.kernel.org/show_bug.cgi?id=15573
>
> Signed-off-by: Tejun Heo<tj@kernel.org>
> Reported-by: lethalwp@scarlet.be
> Reported-by: Luke Macken<lmacken@redhat.com>
> ---
>   drivers/ata/libata-core.c |    3 +++
>   1 file changed, 3 insertions(+)

applied