diff options
| author | Saravana Kannan <saravanak@google.com> | 2021-01-10 20:54:07 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-01-27 13:55:18 +0300 |
| commit | b3bc56e3f503281a0d30896fe4f17a9a3d7d03c0 (patch) | |
| tree | a8981157e7792916391749c8e9623524ed47ad3a /Documentation/ABI/testing/sysfs-class-devlink | |
| parent | 8cd3c48c1baf8c99dd573c41f25c1bb066f641b3 (diff) | |
| download | linux-b3bc56e3f503281a0d30896fe4f17a9a3d7d03c0.tar.xz | |
driver core: Fix device link device name collision
commit e020ff611ba9be54e959e6b548038f8a020da1c9 upstream.
The device link device's name was of the form:
<supplier-dev-name>--<consumer-dev-name>
This can cause name collision as reported here [1] as device names are
not globally unique. Since device names have to be unique within the
bus/class, add the bus/class name as a prefix to the device names used to
construct the device link device name.
So the devuce link device's name will be of the form:
<supplier-bus-name>:<supplier-dev-name>--<consumer-bus-name>:<consumer-dev-name>
[1] - https://lore.kernel.org/lkml/20201229033440.32142-1-michael@walle.cc/
Fixes: 287905e68dd2 ("driver core: Expose device link details in sysfs")
Cc: stable@vger.kernel.org
Reported-by: Michael Walle <michael@walle.cc>
Tested-by: Michael Walle <michael@walle.cc>
Signed-off-by: Saravana Kannan <saravanak@google.com>
Link: https://lore.kernel.org/r/20210110175408.1465657-1-saravanak@google.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'Documentation/ABI/testing/sysfs-class-devlink')
| -rw-r--r-- | Documentation/ABI/testing/sysfs-class-devlink | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/Documentation/ABI/testing/sysfs-class-devlink b/Documentation/ABI/testing/sysfs-class-devlink index b662f747c83e..8a21ce515f61 100644 --- a/Documentation/ABI/testing/sysfs-class-devlink +++ b/Documentation/ABI/testing/sysfs-class-devlink @@ -5,8 +5,8 @@ Description: Provide a place in sysfs for the device link objects in the kernel at any given time. The name of a device link directory, denoted as ... above, is of the form <supplier>--<consumer> - where <supplier> is the supplier device name and <consumer> is - the consumer device name. + where <supplier> is the supplier bus:device name and <consumer> + is the consumer bus:device name. What: /sys/class/devlink/.../auto_remove_on Date: May 2020 |