en Copyright 2015 Java http://172.16.0.5:8080/history/linux-6.15/Documentation/ABI/testing/sysfs-devices-consumer#e020ff61 driver core: Fix device link device name collisionThe 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 arenot globally unique. Since device names have to be unique within thebus/class, add the bus/class name as a prefix to the device names used toconstruct 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.orgReported-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.comSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> List of files: /linux-6.15/Documentation/ABI/testing/sysfs-devices-consumer Sun, 10 Jan 2021 17:54:07 +0000 Saravana Kannan <saravanak@google.com> http://172.16.0.5:8080/history/linux-6.15/Documentation/ABI/testing/sysfs-devices-consumer#287905e6 driver core: Expose device link details in sysfsIt's helpful to be able to look at device link details from sysfs. So,expose it in sysfs.Say device-A is supplier of device-B. These are the additional filesthis patch would create:/sys/class/devlink/device-A:device-B/ auto_remove_on consumer/ -> .../device-B/ runtime_pm status supplier/ -> .../device-A/ sync_state_only/sys/devices/.../device-A/ consumer:device-B/ -> /sys/class/devlink/device-A:device-B//sys/devices/.../device-B/ supplier:device-A/ -> /sys/class/devlink/device-A:device-B/That way:To get a list of all the device link in the system:ls /sys/class/devlink/To get the consumer names and links of a device:ls -d /sys/devices/.../device-X/consumer:*To get the supplier names and links of a device:ls -d /sys/devices/.../device-X/supplier:*Signed-off-by: Saravana Kannan <saravanak@google.com>Link: https://lore.kernel.org/r/20200521191800.136035-2-saravanak@google.comSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> List of files: /linux-6.15/Documentation/ABI/testing/sysfs-devices-consumer Thu, 21 May 2020 19:17:58 +0000 Saravana Kannan <saravanak@google.com>