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| author | Ben Hutchings <ben.hutchings@codethink.co.uk> | 2016-08-16 14:34:18 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2016-11-10 17:22:23 +0100 |
| commit | 6751667a29d6fd64afb9ce30567ad616b68ed789 (patch) | |
| tree | 128403d3fb1187222f340b3676310ef376d17699 /Documentation/ABI | |
| parent | baa8809f60971d10220dfe79248f54b2b265f003 (diff) | |
| download | linux-6751667a29d6fd64afb9ce30567ad616b68ed789.tar.gz linux-6751667a29d6fd64afb9ce30567ad616b68ed789.tar.bz2 linux-6751667a29d6fd64afb9ce30567ad616b68ed789.zip | |
driver core: Add deferred_probe attribute to devices in sysfs
It is sometimes useful to know that a device is on the deferred probe
list rather than, say, not having a driver available. Expose this
information to user-space.
Signed-off-by: Ben Hutchings <ben.hutchings@codethink.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'Documentation/ABI')
| -rw-r--r-- | Documentation/ABI/testing/sysfs-devices-deferred_probe | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/Documentation/ABI/testing/sysfs-devices-deferred_probe b/Documentation/ABI/testing/sysfs-devices-deferred_probe new file mode 100644 index 000000000000..58553d7a321f --- /dev/null +++ b/Documentation/ABI/testing/sysfs-devices-deferred_probe @@ -0,0 +1,12 @@ +What: /sys/devices/.../deferred_probe +Date: August 2016 +Contact: Ben Hutchings <ben.hutchings@codethink.co.uk> +Description: + The /sys/devices/.../deferred_probe attribute is + present for all devices. If a driver detects during + probing a device that a related device is not yet + ready, it may defer probing of the first device. The + kernel will retry probing the first device after any + other device is successfully probed. This attribute + reads as 1 if probing of this device is currently + deferred, or 0 otherwise. |