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SubjectRe: [PATCH v2.6.38-rc7] Revert "libata: ahci_start_engine compliant to AHCI spec"
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On Sat, 14 May 2011 12:28:04 +0200, Tejun Heo said:
> This reverts commit 270dac35c26433d06a89150c51e75ca0181ca7e4.
>
> The commits causes command timeouts on AC plug/unplug. It isn't yet
> clear why. As the commit was for a single rather obscure controller,
> revert the change for now.
>
> The problem was reported and bisected by Gu Rui in bug#34692.
>
> https://bugzilla.kernel.org/show_bug.cgi?id=34692
>
> Also, reported by Rafael and Michael in the following thread.
>
> http://thread.gmane.org/gmane.linux.kernel/1138771

This also fixes the issue I had with a 10-second pause on my Dell Latitude E6500
laptop at boot while detecting the CD/DVD drive.
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