User pci_lock_hotplug()/pci_unlock_hotplug() to serialize PCI hotplug operations triggered by acpiphp driver. Signed-off-by: Jiang Liu <jiang.liu@xxxxxxxxxx> --- drivers/pci/hotplug/acpiphp_glue.c | 6 ++++++ 1 files changed, 6 insertions(+), 0 deletions(-) diff --git a/drivers/pci/hotplug/acpiphp_glue.c b/drivers/pci/hotplug/acpiphp_glue.c index 764891e..ee820a9 100644 --- a/drivers/pci/hotplug/acpiphp_glue.c +++ b/drivers/pci/hotplug/acpiphp_glue.c @@ -1095,6 +1095,8 @@ static void _handle_hotplug_event_bridge(struct work_struct *work) handle = hp_work->handle; type = hp_work->type; bridge = (struct acpiphp_bridge *)hp_work->context; + + pci_lock_hotplug(); if (bridge->flags & BRIDGE_IS_DEAD) goto out; @@ -1156,6 +1158,7 @@ static void _handle_hotplug_event_bridge(struct work_struct *work) } out: + pci_unlock_hotplug(); kref_put(&bridge->kref, acpiphp_release_bridge); kfree(hp_work); /* allocated in handle_hotplug_event_bridge */ } @@ -1201,6 +1204,8 @@ static void _handle_hotplug_event_func(struct work_struct *work) handle = hp_work->handle; type = hp_work->type; func = (struct acpiphp_func *)hp_work->context; + + pci_lock_hotplug(); if (func->flags & FUNC_IS_DEAD) goto out; @@ -1237,6 +1242,7 @@ static void _handle_hotplug_event_func(struct work_struct *work) } out: + pci_unlock_hotplug(); kref_put(&func->kref, acpiphp_release_func); kfree(hp_work); /* allocated in handle_hotplug_event_func */ } -- 1.7.5.4 -- To unsubscribe from this list: send the line "unsubscribe linux-pci" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
