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PCI: hotplug: pciehp: wait for 1 second after power off slot

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According to the specification, we must wait for at least 1 second
after turning power off before taking any action that relies on power
having been removed from the slot/adapter.

Signed-off-by: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com>
Signed-off-by: Kristen Carlson Accardi <kristen.c.accardi@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Kenji Kaneshige 2007-07-05 11:10:45 -07:00 committed by Greg Kroah-Hartman
parent cca03dec2f
commit 5b57a6cea4
1 changed files with 12 additions and 0 deletions
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12
drivers/pci/hotplug/pciehp_ctrl.c
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@ -197,6 +197,12 @@ static void set_slot_off(struct controller *ctrl, struct slot * pslot)
__FUNCTION__);
return;
}
/*
* After turning power off, we must wait for at least
* 1 second before taking any action that relies on
* power having been removed from the slot/adapter.
*/
msleep(1000);
}
}
@ -615,6 +621,12 @@ int pciehp_disable_slot(struct slot *p_slot)
mutex_unlock(&p_slot->ctrl->crit_sect);
return -EINVAL;
}
/*
* After turning power off, we must wait for at least
* 1 second before taking any action that relies on
* power having been removed from the slot/adapter.
*/
msleep(1000);
}
ret = remove_board(p_slot);