mei: bus: prefix device names on bus with the bus name

commit 7a2b9e6ec84588b0be65cc0ae45a65bac431496b upstream.

Add parent device name to the name of devices on bus to avoid
device names collisions for same client UUID available
from different MEI heads. Namely this prevents sysfs collision under
/sys/bus/mei/device/

In the device part leave just UUID other parameters that are
required for device matching are not required here and are
just bloating the name.

Cc: <stable@vger.kernel.org>
Signed-off-by: Alexander Usyskin <alexander.usyskin@intel.com>
Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Link: https://lore.kernel.org/r/20191105150514.14010-1-tomas.winkler@intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/misc/mei/bus.c b/drivers/misc/mei/bus.c
index c383322ec2ba0a7d0ae90b22055da16410b49515..bb2e1387b119788f752710ce697a4077f29caa23 100644 (file)
--- a/drivers/misc/mei/bus.c
+++ b/drivers/misc/mei/bus.c
@@ -883,15 +883,16 @@ static const struct device_type mei_cl_device_type = {
 
 /**
  * mei_cl_bus_set_name - set device name for me client device
+ *  <controller>-<client device>
+ *  Example: 0000:00:16.0-55213584-9a29-4916-badf-0fb7ed682aeb
  *
  * @cldev: me client device
  */
 static inline void mei_cl_bus_set_name(struct mei_cl_device *cldev)
 {
-       dev_set_name(&cldev->dev, "mei:%s:%pUl:%02X",
-                    cldev->name,
-                    mei_me_cl_uuid(cldev->me_cl),
-                    mei_me_cl_ver(cldev->me_cl));
+       dev_set_name(&cldev->dev, "%s-%pUl",
+                    dev_name(cldev->bus->dev),
+                    mei_me_cl_uuid(cldev->me_cl));
 }
 
 /**