Re: [PATCH -mm 2/8] AHCI: Speed-up resume

Pavel Machek
2008-07-10T15:03:42Z

On Thu 2008-07-10 01:58:48, Rafael J. Wysocki wrote:
> From: Zhang Rui <rui.zhang@intel.com>
> Subject: AHCI: Speed-up resume
>
> During resume, sleep 1 second to wait for the HBA reset
> to finish is a waste of time.
>
> According to the AHCI 1.2 spec,
> We should poll the HOST_CTL register,
> and return error if the host reset is not
> finished within 1 second.
>
> Test results show that the HBA reset can be done quickly(in usecs).
> And this patch may save nearly 1 second during resume.
>
> Signed-off-by: Zhang Rui <rui.zhang@intel.com>
> Acked-by: Tejun Heo <tj@kernel.org>
> Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>

ACK.

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