The patch titled
s390: update cio documentation
has been added to the -mm tree. Its filename is
s390-update-cio-documentation.patch
See http://www.zip.com.au/~akpm/linux/patches/stuff/added-to-mm.txt to find
out what to do about this
------------------------------------------------------
Subject: s390: update cio documentation
From: Cornelia Huck <cornelia.huck@xxxxxxxxxx>
Update documentation for dynamic subchannel mapping.
Signed-off-by: Cornelia Huck <cornelia.huck@xxxxxxxxxx>
Cc: Martin Schwidefsky <schwidefsky@xxxxxxxxxx>
Cc: Greg KH <greg@xxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxx>
---
Documentation/s390/driver-model.txt | 7 +++++++
1 files changed, 7 insertions(+)
diff -puN Documentation/s390/driver-model.txt~s390-update-cio-documentation Documentation/s390/driver-model.txt
--- a/Documentation/s390/driver-model.txt~s390-update-cio-documentation
+++ a/Documentation/s390/driver-model.txt
@@ -18,11 +18,18 @@ devices/
- 0.0.0002/
- 0.1.0000/0.1.1234/
...
+ - defunct/
In this example, device 0815 is accessed via subchannel 0 in subchannel set 0,
device 4711 via subchannel 1 in subchannel set 0, and subchannel 2 is a non-I/O
subchannel. Device 1234 is accessed via subchannel 0 in subchannel set 1.
+The subchannel named 'defunct' does not represent any real subchannel on the
+system; it is a pseudo subchannel where disconnnected ccw devices are moved to
+if they are displaced by another ccw device becoming operational on their
+former subchannel. The ccw devices will be moved again to a proper subchannel
+if they become operational again on that subchannel.
+
You should address a ccw device via its bus id (e.g. 0.0.4711); the device can
be found under bus/ccw/devices/.
_
Patches currently in -mm which might be from cornelia.huck@xxxxxxxxxx are
driver-core-per-subsystem-multithreaded-probing.patch
driver-core-dont-fail-attaching-the-device-if-it.patch
git-s390.patch
s390-preparatory-cleanup-in-common-i-o-layer.patch
s390-make-the-per-subchannel-lock-dynamic.patch
s390-dynamic-subchannel-mapping-of-ccw-devices.patch
s390-use-dev-groups-for-subchannel-attributes.patch
s390-update-cio-documentation.patch
tty-switch-to-ktermios-sclp-fix.patch
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