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authorMauro Carvalho Chehab <mchehab@redhat.com>2011-07-05 15:07:37 +0200
committerMauro Carvalho Chehab <mchehab@redhat.com>2011-07-27 22:53:35 +0200
commit6d1724925d4da49b84161f1440912205576b7935 (patch)
treee5adf312529fd2edf89ed7f992946eaf9213eefa /Documentation/DocBook
parent[media] marvell-cam: use S/G DMA by default (diff)
downloadlinux-6d1724925d4da49b84161f1440912205576b7935.tar.xz
linux-6d1724925d4da49b84161f1440912205576b7935.zip
[media] DocBook: Add a chapter to describe media errors
There are several errors reported by V4L that aren't described. They can occur on almost all ioctl's. Instead of adding them into each ioctl, create a new chapter. For V4L, the new chapter will automatically be listed on all places, as there's a macro used everywhere there. Acked-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Diffstat (limited to 'Documentation/DocBook')
-rw-r--r--Documentation/DocBook/.gitignore2
-rw-r--r--Documentation/DocBook/media/Makefile42
-rw-r--r--Documentation/DocBook/media/v4l/gen-errors.xml17
-rw-r--r--Documentation/DocBook/media_api.tmpl7
4 files changed, 64 insertions, 4 deletions
diff --git a/Documentation/DocBook/.gitignore b/Documentation/DocBook/.gitignore
index 25214a5ae14d..720f245ceb1f 100644
--- a/Documentation/DocBook/.gitignore
+++ b/Documentation/DocBook/.gitignore
@@ -8,5 +8,7 @@
*.dvi
*.log
*.out
+*.png
+*.gif
media-indices.tmpl
media-entities.tmpl
diff --git a/Documentation/DocBook/media/Makefile b/Documentation/DocBook/media/Makefile
index 8cb27f346d0d..6628b4b9cac4 100644
--- a/Documentation/DocBook/media/Makefile
+++ b/Documentation/DocBook/media/Makefile
@@ -100,23 +100,59 @@ STRUCTS = \
$(shell perl -ne 'print "$$1 " if /^struct\s+([^\s]+)\s+/' $(srctree)/include/linux/v4l2-mediabus.h)
ERRORS = \
+ E2BIG \
EACCES \
EAGAIN \
EBADF \
+ EBADFD \
+ EBADR \
+ EBADRQC \
EBUSY \
+ ECHILD \
+ ECONNRESET \
+ EDEADLK \
+ EDOM \
+ EEXIST \
EFAULT \
- EIO \
+ EFBIG \
+ EILSEQ \
+ EINIT \
+ EINPROGRESS \
EINTR \
EINVAL \
+ EIO \
+ EMFILE \
ENFILE \
+ ENOBUFS \
+ ENODATA \
+ ENODEV \
+ ENOENT \
+ ENOIOCTLCMD \
ENOMEM \
ENOSPC \
+ ENOSR \
+ ENOSYS \
+ ENOTSUP \
+ ENOTSUPP \
ENOTTY \
ENXIO \
- EMFILE \
+ EOPNOTSUPP \
+ EOVERFLOW \
EPERM \
- ERANGE \
EPIPE \
+ EPROTO \
+ ERANGE \
+ EREMOTE \
+ EREMOTEIO \
+ ERESTART \
+ ERESTARTSYS \
+ ESHUTDOWN \
+ ESPIPE \
+ ETIME \
+ ETIMEDOUT \
+ EUSERS \
+ EWOULDBLOCK \
+ EXDEV \
ESCAPE = \
-e "s/&/\\&amp;/g" \
diff --git a/Documentation/DocBook/media/v4l/gen-errors.xml b/Documentation/DocBook/media/v4l/gen-errors.xml
new file mode 100644
index 000000000000..1efc688ad665
--- /dev/null
+++ b/Documentation/DocBook/media/v4l/gen-errors.xml
@@ -0,0 +1,17 @@
+<title>Generic Error Codes</title>
+
+<table frame="none" pgwide="1" id="gen-errors">
+ <title>Generic error codes</title>
+ <tgroup cols="2">
+ &cs-str;
+ <tbody valign="top">
+ <row>
+ <entry>EBUSY</entry>
+ <entry>The ioctl can't be handled because the device is busy. This is
+ typically return while device is streaming, and an ioctl tried to
+ change something that would affect the stream, or would require the
+ usage of a hardware resource that was already allocated.</entry>
+ </row>
+ </tbody>
+ </tgroup>
+</table>
diff --git a/Documentation/DocBook/media_api.tmpl b/Documentation/DocBook/media_api.tmpl
index 88f2cc680cc2..c273e3c54fc5 100644
--- a/Documentation/DocBook/media_api.tmpl
+++ b/Documentation/DocBook/media_api.tmpl
@@ -8,7 +8,7 @@
<!ENTITY ie "i.&nbsp;e.">
<!ENTITY fd "File descriptor returned by <link linkend='func-open'><function>open()</function></link>.">
<!ENTITY i2c "I<superscript>2</superscript>C">
-<!ENTITY return-value "<title>Return Value</title><para>On success <returnvalue>0</returnvalue> is returned, on error <returnvalue>-1</returnvalue> and the <varname>errno</varname> variable is set appropriately:</para>">
+<!ENTITY return-value "<title>Return Value</title><para>On success <returnvalue>0</returnvalue> is returned, on error <returnvalue>-1</returnvalue> and the <varname>errno</varname> variable is set appropriately. The generic error codes are described at the <link linkend='gen-errors'>Generic Error Codes</link> chapter.</para>">
<!ENTITY manvol "<manvolnum>2</manvolnum>">
<!-- Table templates: structs, structs w/union, defines. -->
@@ -110,6 +110,11 @@ Foundation. A copy of the license is included in the chapter entitled
&sub-media-controller;
</part>
+<chapter id="gen_errors">
+&sub-gen-errors;
+</chapter>
+
+
&sub-fdl-appendix;
</book>