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libata: forbid port runtime pm by default, fixing regression

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Forbid port runtime pm by default because it has known hotplug issue.
User can allow it by, for example

echo auto > /sys/devices/pci0000:00/0000:00:1f.2/ata2/power/control

Signed-off-by: Lin Ming <ming.m.lin@intel.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
This commit is contained in:
Lin Ming 2012-04-18 09:29:47 +08:00 committed by Jeff Garzik
parent 85d6725b7c
commit 0c8d32c27f
1 changed files with 1 additions and 0 deletions
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drivers/ata/libata-transport.c
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@ -294,6 +294,7 @@ int ata_tport_add(struct device *parent,
device_enable_async_suspend(dev);
pm_runtime_set_active(dev);
pm_runtime_enable(dev);
pm_runtime_forbid(dev);
transport_add_device(dev);
transport_configure_device(dev);