From 5b57a6cea464fc686a6bc446f667c05901fa9734 Mon Sep 17 00:00:00 2001 From: Kenji Kaneshige Date: Thu, 5 Jul 2007 11:10:45 -0700 Subject: [PATCH] PCI: hotplug: pciehp: wait for 1 second after power off slot 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 Signed-off-by: Kristen Carlson Accardi Signed-off-by: Greg Kroah-Hartman --- drivers/pci/hotplug/pciehp_ctrl.c | 12 ++++++++++++ 1 file changed, 12 insertions(+) diff --git a/drivers/pci/hotplug/pciehp_ctrl.c b/drivers/pci/hotplug/pciehp_ctrl.c index 7f22caa70178..98e541ffef3d 100644 --- a/drivers/pci/hotplug/pciehp_ctrl.c +++ b/drivers/pci/hotplug/pciehp_ctrl.c @@ -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); -- 2.20.1