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r: 104792
b: refs/heads/master
c: 2dff417
h: refs/heads/master
v: v3
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Scott Wood authored and Kumar Gala committed Jul 16, 2008
1 parent 9757c93 commit 14eb7bf
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2 changes: 1 addition & 1 deletion [refs]
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---
refs/heads/master: 53baaaa9682c230410a057263d1ce2922f43ddc4
refs/heads/master: 2dff41775decb9cb1f3a6ac577c78dc3eea60431
3 changes: 2 additions & 1 deletion trunk/CREDITS
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Expand Up @@ -3344,7 +3344,8 @@ S: Spain
N: Linus Torvalds
E: torvalds@linux-foundation.org
D: Original kernel hacker
S: Portland, Oregon 97005
S: 12725 SW Millikan Way, Suite 400
S: Beaverton, Oregon 97005
S: USA

N: Marcelo Tosatti
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20 changes: 0 additions & 20 deletions trunk/Documentation/ABI/testing/sysfs-dev
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38 changes: 0 additions & 38 deletions trunk/Documentation/DocBook/gadget.tmpl
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Expand Up @@ -524,44 +524,6 @@ These utilities include endpoint autoconfiguration.
<!-- !Edrivers/usb/gadget/epautoconf.c -->
</sect1>

<sect1 id="composite"><title>Composite Device Framework</title>

<para>The core API is sufficient for writing drivers for composite
USB devices (with more than one function in a given configuration),
and also multi-configuration devices (also more than one function,
but not necessarily sharing a given configuration).
There is however an optional framework which makes it easier to
reuse and combine functions.
</para>

<para>Devices using this framework provide a <emphasis>struct
usb_composite_driver</emphasis>, which in turn provides one or
more <emphasis>struct usb_configuration</emphasis> instances.
Each such configuration includes at least one
<emphasis>struct usb_function</emphasis>, which packages a user
visible role such as "network link" or "mass storage device".
Management functions may also exist, such as "Device Firmware
Upgrade".
</para>

!Iinclude/linux/usb/composite.h
!Edrivers/usb/gadget/composite.c

</sect1>

<sect1 id="functions"><title>Composite Device Functions</title>

<para>At this writing, a few of the current gadget drivers have
been converted to this framework.
Near-term plans include converting all of them, except for "gadgetfs".
</para>

!Edrivers/usb/gadget/f_acm.c
!Edrivers/usb/gadget/f_serial.c

</sect1>


</chapter>

<chapter id="controllers"><title>Peripheral Controller Drivers</title>
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63 changes: 12 additions & 51 deletions trunk/Documentation/DocBook/uio-howto.tmpl
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Expand Up @@ -21,18 +21,6 @@
</affiliation>
</author>

<copyright>
<year>2006-2008</year>
<holder>Hans-Jürgen Koch.</holder>
</copyright>

<legalnotice>
<para>
This documentation is Free Software licensed under the terms of the
GPL version 2.
</para>
</legalnotice>

<pubdate>2006-12-11</pubdate>

<abstract>
Expand All @@ -41,12 +29,6 @@ GPL version 2.
</abstract>

<revhistory>
<revision>
<revnumber>0.5</revnumber>
<date>2008-05-22</date>
<authorinitials>hjk</authorinitials>
<revremark>Added description of write() function.</revremark>
</revision>
<revision>
<revnumber>0.4</revnumber>
<date>2007-11-26</date>
Expand Down Expand Up @@ -75,9 +57,20 @@ GPL version 2.
</bookinfo>

<chapter id="aboutthisdoc">
<?dbhtml filename="aboutthis.html"?>
<?dbhtml filename="about.html"?>
<title>About this document</title>

<sect1 id="copyright">
<?dbhtml filename="copyright.html"?>
<title>Copyright and License</title>
<para>
Copyright (c) 2006 by Hans-Jürgen Koch.</para>
<para>
This documentation is Free Software licensed under the terms of the
GPL version 2.
</para>
</sect1>

<sect1 id="translations">
<?dbhtml filename="translations.html"?>
<title>Translations</title>
Expand Down Expand Up @@ -196,30 +189,6 @@ interested in translating it, please email me
represents the total interrupt count. You can use this number
to figure out if you missed some interrupts.
</para>
<para>
For some hardware that has more than one interrupt source internally,
but not separate IRQ mask and status registers, there might be
situations where userspace cannot determine what the interrupt source
was if the kernel handler disables them by writing to the chip's IRQ
register. In such a case, the kernel has to disable the IRQ completely
to leave the chip's register untouched. Now the userspace part can
determine the cause of the interrupt, but it cannot re-enable
interrupts. Another cornercase is chips where re-enabling interrupts
is a read-modify-write operation to a combined IRQ status/acknowledge
register. This would be racy if a new interrupt occurred
simultaneously.
</para>
<para>
To address these problems, UIO also implements a write() function. It
is normally not used and can be ignored for hardware that has only a
single interrupt source or has separate IRQ mask and status registers.
If you need it, however, a write to <filename>/dev/uioX</filename>
will call the <function>irqcontrol()</function> function implemented
by the driver. You have to write a 32-bit value that is usually either
0 or 1 to disable or enable interrupts. If a driver does not implement
<function>irqcontrol()</function>, <function>write()</function> will
return with <varname>-ENOSYS</varname>.
</para>

<para>
To handle interrupts properly, your custom kernel module can
Expand Down Expand Up @@ -393,14 +362,6 @@ device is actually used.
<function>open()</function>, you will probably also want a custom
<function>release()</function> function.
</para></listitem>

<listitem><para>
<varname>int (*irqcontrol)(struct uio_info *info, s32 irq_on)
</varname>: Optional. If you need to be able to enable or disable
interrupts from userspace by writing to <filename>/dev/uioX</filename>,
you can implement this function. The parameter <varname>irq_on</varname>
will be 0 to disable interrupts and 1 to enable them.
</para></listitem>
</itemizedlist>

<para>
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2 changes: 1 addition & 1 deletion trunk/Documentation/HOWTO
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Expand Up @@ -358,7 +358,7 @@ Here is a list of some of the different kernel trees available:
- pcmcia, Dominik Brodowski <linux@dominikbrodowski.net>
git.kernel.org:/pub/scm/linux/kernel/git/brodo/pcmcia-2.6.git

- SCSI, James Bottomley <James.Bottomley@hansenpartnership.com>
- SCSI, James Bottomley <James.Bottomley@SteelEye.com>
git.kernel.org:/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6.git

- x86, Ingo Molnar <mingo@elte.hu>
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Expand Up @@ -308,41 +308,9 @@ Who: Matthew Wilcox <willy@linux.intel.com>

---------------------------

What: SCTP_GET_PEER_ADDRS_NUM_OLD, SCTP_GET_PEER_ADDRS_OLD,
SCTP_GET_LOCAL_ADDRS_NUM_OLD, SCTP_GET_LOCAL_ADDRS_OLD
When: June 2009
Why: A newer version of the options have been introduced in 2005 that
removes the limitions of the old API. The sctp library has been
converted to use these new options at the same time. Any user
space app that directly uses the old options should convert to using
the new options.
Who: Vlad Yasevich <vladislav.yasevich@hp.com>

---------------------------

What: CONFIG_THERMAL_HWMON
When: January 2009
Why: This option was introduced just to allow older lm-sensors userspace
to keep working over the upgrade to 2.6.26. At the scheduled time of
removal fixed lm-sensors (2.x or 3.x) should be readily available.
Who: Rene Herman <rene.herman@gmail.com>

---------------------------

What: Code that is now under CONFIG_WIRELESS_EXT_SYSFS
(in net/core/net-sysfs.c)
When: After the only user (hal) has seen a release with the patches
for enough time, probably some time in 2010.
Why: Over 1K .text/.data size reduction, data is available in other
ways (ioctls)
Who: Johannes Berg <johannes@sipsolutions.net>

---------------------------

What: CONFIG_NF_CT_ACCT
When: 2.6.29
Why: Accounting can now be enabled/disabled without kernel recompilation.
Currently used only to set a default value for a feature that is also
controlled by a kernel/module/sysfs/sysctl parameter.
Who: Krzysztof Piotr Oledzki <ole@ans.pl>

4 changes: 2 additions & 2 deletions trunk/Documentation/filesystems/configfs/configfs_example.c
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Expand Up @@ -279,7 +279,7 @@ static struct config_item *simple_children_make_item(struct config_group *group,

simple_child = kzalloc(sizeof(struct simple_child), GFP_KERNEL);
if (!simple_child)
return ERR_PTR(-ENOMEM);
return NULL;


config_item_init_type_name(&simple_child->item, name,
Expand Down Expand Up @@ -366,7 +366,7 @@ static struct config_group *group_children_make_group(struct config_group *group
simple_children = kzalloc(sizeof(struct simple_children),
GFP_KERNEL);
if (!simple_children)
return ERR_PTR(-ENOMEM);
return NULL;


config_group_init_type_name(&simple_children->group, name,
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