On 03/24/2010 10:19 AM, Matthew Garrett wrote:
On Wed, Mar 10, 2010 at 03:32:30PM -0500, Matthew Garrett wrote:
According to section 10.3.1 of the AHCI spec, PxCMD.ST must not be set
unless there's a device attached. Following this saves us a measurable
quantity of power and does not impair hotplug support. Based on a patch
by Kristen Carlson Accardi.
Signed-off-by: Matthew Garrett<mjg@xxxxxxxxxx>
Cc: Kristen Carlson Accardi<kristen.c.accardi@xxxxxxxxx>
---
drivers/ata/ahci.c | 19 +++++++++++++++++++
1 files changed, 19 insertions(+), 0 deletions(-)
(please don't top-post, it makes replying more difficult)
Any feedback on this?
It should be fine, but I have to rebase it onto the latest upstream ahci
(libata-dev.git#upstream), so it's been waiting on that...
Jeff
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