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SubjectRe: [PATCH v2.6.38-rc7] Revert "libata: ahci_start_engine compliant to AHCI spec"
Date
On Wednesday, May 18, 2011, Jian Peng wrote:
> Hi, Valdis/Rafael/Michael,
>
> Could you help me test the following change?
>
> After reverting 81ca7e4, add 5ms delay as follow since that seems also
> fixing the issue on my SATA host controller that requires 81ca7e4.
>
> In drivers/ata/libahci.c, inside ahci_hardreset() function,
>
>
> 1333 <http://lxr.linux.no/linux+*/drivers/ata/libahci.c#L1333>
> ahci_start_engine
> <http://lxr.linux.no/linux+*/+code=ahci_start_engine>(ap
> <http://lxr.linux.no/linux+*/+code=ap>);
>
> msleep(5);1334
> <http://lxr.linux.no/linux+*/drivers/ata/libahci.c#L1334>1335
> <http://lxr.linux.no/linux+*/drivers/ata/libahci.c#L1335> if
> (online <http://lxr.linux.no/linux+*/+code=online>)1336
> <http://lxr.linux.no/linux+*/drivers/ata/libahci.c#L1336>
> *class <http://lxr.linux.no/linux+*/+code=class> = ahci_dev_classify
> <http://lxr.linux.no/linux+*/+code=ahci_dev_classify>(ap
> <http://lxr.linux.no/linux+*/+code=ap>);
>
> Since my host controller requires time to switch internal state to be ready.
> Please let me know your testing result.

Could you simply post a patch?

Rafael


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