deprecate PHYSDEV* keys

deprecate PHYSDEV* values in the uevent environment

These values are no longer needed and inconsistent with the
stacking of class devices. The event environment should not
carry properties of a parent device. The key PHYSDEVDRIVER is
available as DRIVER, PHYDEVBUS is indentical SUBSYSTEM. Class
devices should not carry any of these values.

Signed-off-by: Kay Sievers <kay.sievers@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

1 files changed, 7 insertions, 3 deletions

diff --git a/drivers/base/core.c b/drivers/base/core.c
index be6b5bc0677d..04d089fd4f76 100644
--- a/drivers/base/core.c
+++ b/drivers/base/core.c
@@ -149,17 +149,21 @@ static int dev_uevent(struct kset *kset, struct kobject *kobj, char **envp,
                                "MINOR=%u", MINOR(dev->devt));
         }
 
-        /* add bus name of physical device */
+        /* add bus name (same as SUBSYSTEM, deprecated) */
         if (dev->bus)
                 add_uevent_var(envp, num_envp, &i,
                                buffer, buffer_size, &length,
                                "PHYSDEVBUS=%s", dev->bus->name);
 
-        /* add driver name of physical device */
-        if (dev->driver)
+        /* add driver name (PHYSDEV* values are deprecated)*/
+        if (dev->driver) {
+                add_uevent_var(envp, num_envp, &i,
+                               buffer, buffer_size, &length,
+                               "DRIVER=%s", dev->driver->name);
                 add_uevent_var(envp, num_envp, &i,
                                buffer, buffer_size, &length,
                                "PHYSDEVDRIVER=%s", dev->driver->name);
+        }
 
         /* terminate, set to next free slot, shrink available space */
         envp[i] = NULL;