[PATCH] support SUBSYSTEM as a rule key

This should make it easier to catch e.g all block or net devices with
a single rule.

1 files changed, 4 insertions, 0 deletions

diff --git a/udev.8.in b/udev.8.in
index 168842d435..14a28d8dc2 100644
--- a/udev.8.in
+++ b/udev.8.in
@@ -171,6 +171,10 @@ Match the bus type of the device.
 .B KERNEL
 Match the kernel device name.
 .TP
+.B SUBSYSTEM
+Match the kernel's subsystem name.
+.TP
+.TP
 .B ID
 Match the device number on the bus, like PCI bus id.
 .TP