From 190888ac01d059e38ffe77a2291d44cafa9016fb Mon Sep 17 00:00:00 2001
From: Ming Lei <ming.lei@canonical.com>
Date: Mon, 19 Nov 2012 23:35:17 +0800
Subject: [PATCH] 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 <ming.lei@canonical.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/base/bus.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
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);
--
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