On 03/10/2010 03:32 PM, 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(-)
applied manually to libata-dev.git#upstream, due to large code movements in creation of new libahci kernel module
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