powerpc/ibmebus: Fix further device reference leaks

commit 815a7141c4d1b11610dccb7fcbb38633759824f2 upstream.

Make sure to drop any reference taken by bus_find_device() when creating
devices during init and driver registration.

Fixes: 55347cc9962f ("[POWERPC] ibmebus: Add device creation and bus probing based on of_device")
Signed-off-by: Johan Hovold <johan@kernel.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Willy Tarreau <w@1wt.eu>

diff --git a/arch/powerpc/kernel/ibmebus.c b/arch/powerpc/kernel/ibmebus.c
index 8220baa46faf8ced3c383bb5de46b310b802cbbf..cce1a4430ec7960af9741d31dd6036cab0247388 100644 (file)
--- a/arch/powerpc/kernel/ibmebus.c
+++ b/arch/powerpc/kernel/ibmebus.c
@@ -180,6 +180,7 @@ static int ibmebus_create_device(struct device_node *dn)
 static int ibmebus_create_devices(const struct of_device_id *matches)
 {
        struct device_node *root, *child;
+       struct device *dev;
        int ret = 0;
 
        root = of_find_node_by_path("/");
@@ -188,9 +189,12 @@ static int ibmebus_create_devices(const struct of_device_id *matches)
                if (!of_match_node(matches, child))
                        continue;
 
-               if (bus_find_device(&ibmebus_bus_type, NULL, child,
-                                   ibmebus_match_node))
+               dev = bus_find_device(&ibmebus_bus_type, NULL, child,
+                                     ibmebus_match_node);
+               if (dev) {
+                       put_device(dev);
                        continue;
+               }
 
                ret = ibmebus_create_device(child);
                if (ret) {