From: Ming Lei Date: Mon, 19 Nov 2012 15:35:17 +0000 (+0800) Subject: driver core: fix possible missing of device probe X-Git-Tag: v3.9-rc1~128^2~126 X-Git-Url: https://asedeno.scripts.mit.edu/gitweb/?a=commitdiff_plain;h=190888ac01d059e38ffe77a2291d44cafa9016fb;p=linux.git driver core: fix possible missing of device probe Inside bus_add_driver(), one device might be added(device_add()) into the bus or probed which is triggered by deferred probe just after completing of driver_attach() and before 'klist_add_tail(&priv->knode_bus, &bus->p->klist_drivers)', so the device won't be probed by this driver. This patch moves the below line 'klist_add_tail(&priv->knode_bus, &bus->p->klist_drivers)' before driver_attach() inside bus_add_driver() to fix the problem. Signed-off-by: Ming Lei Signed-off-by: Greg Kroah-Hartman --- diff --git a/drivers/base/bus.c b/drivers/base/bus.c index 24eb07868344..f9d31320bd37 100644 --- a/drivers/base/bus.c +++ b/drivers/base/bus.c @@ -700,12 +700,12 @@ int bus_add_driver(struct device_driver *drv) if (error) goto out_unregister; + klist_add_tail(&priv->knode_bus, &bus->p->klist_drivers); if (drv->bus->p->drivers_autoprobe) { error = driver_attach(drv); if (error) goto out_unregister; } - klist_add_tail(&priv->knode_bus, &bus->p->klist_drivers); module_add_driver(drv->owner, drv); error = driver_create_file(drv, &driver_attr_uevent);