Re: [PATCH #upstream-fixes] libata: retry link resume if necessary

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On Mon, Jan 11, 2010 at 11:14:44AM +0900, Tejun Heo wrote:
> Interestingly, when SIDPR is used in ata_piix, writes to DET in
> SControl sometimes get ignored leading to detection failure.  Update
> sata_link_resume() such that it reads back SControl after clearing DET
> and retry if it's not clear.
> 
> Signed-off-by: Tejun Heo <tj@xxxxxxxxxx>
> Reported-by: fengxiangjun <fengxiangjun@xxxxxxxxxxx>
> Reported-by: Jim Faulkner <jfaulkne@xxxxxxxxxxx>
> Cc: stable@xxxxxxxxxx
> ---
> Greg, although this patch should be included in -stable release in
> time, I think it should receive some more testing in devel branch for
> at least a couple of -rc cycles as it changes very fundamental part of
> hardreset protocol.  Is there a protocol for delayed inclusion into
> -stable?  If not, I'll try to remember and ping you back after some
> time but I'm almost sure that I'm gonna forget this.  :-)

I'll drop this into my "todo-stable" queue, and ping you back on this in
a few weeks.  Sound good?

thanks,

greg k-h
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