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| author | Saravana Kannan <saravanak@google.com> | 2021-01-10 18:54:07 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-01-21 20:12:40 +0100 |
| commit | e020ff611ba9be54e959e6b548038f8a020da1c9 (patch) | |
| tree | f6e0ab7384c3ab85a71ec5568fdace8135312a12 /Documentation/ABI/testing/sysfs-devices-consumer | |
| parent | driver core: Extend device_is_dependent() (diff) | |
| download | linux-e020ff611ba9be54e959e6b548038f8a020da1c9.tar.xz linux-e020ff611ba9be54e959e6b548038f8a020da1c9.zip | |
driver core: Fix device link device name collision
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-devices-consumer')
| -rw-r--r-- | Documentation/ABI/testing/sysfs-devices-consumer | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/Documentation/ABI/testing/sysfs-devices-consumer b/Documentation/ABI/testing/sysfs-devices-consumer index 1f06d74d1c3c..0809fda092e6 100644 --- a/Documentation/ABI/testing/sysfs-devices-consumer +++ b/Documentation/ABI/testing/sysfs-devices-consumer @@ -4,5 +4,6 @@ Contact: Saravana Kannan <saravanak@google.com> Description: The /sys/devices/.../consumer:<consumer> are symlinks to device links where this device is the supplier. <consumer> denotes the - name of the consumer in that device link. There can be zero or - more of these symlinks for a given device. + name of the consumer in that device link and is of the form + bus:device name. There can be zero or more of these symlinks + for a given device. |