diff options
| author | Kenji Kaneshige | 2007-07-05 20:10:45 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman | 2007-07-12 01:02:12 +0200 |
| commit | 5b57a6cea464fc686a6bc446f667c05901fa9734 (patch) | |
| tree | a578ced7ef8bd86c700ac5c2ad31e4fcf6249965 | |
| parent | PCI: pci_set_power_state(): check for PM capabilities earlier (diff) | |
| download | kernel-qcow2-linux-5b57a6cea464fc686a6bc446f667c05901fa9734.tar.gz kernel-qcow2-linux-5b57a6cea464fc686a6bc446f667c05901fa9734.tar.xz kernel-qcow2-linux-5b57a6cea464fc686a6bc446f667c05901fa9734.zip | |
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 <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>
| -rw-r--r-- | drivers/pci/hotplug/pciehp_ctrl.c | 12 |
1 files changed, 12 insertions, 0 deletions
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); |