diff options
Diffstat (limited to 'Documentation/sound')
-rw-r--r-- | Documentation/sound/alsa/DocBook/writing-an-alsa-driver.tmpl | 33 |
1 files changed, 12 insertions, 21 deletions
diff --git a/Documentation/sound/alsa/DocBook/writing-an-alsa-driver.tmpl b/Documentation/sound/alsa/DocBook/writing-an-alsa-driver.tmpl index 24e85520890b..f3a2fdca9ad2 100644 --- a/Documentation/sound/alsa/DocBook/writing-an-alsa-driver.tmpl +++ b/Documentation/sound/alsa/DocBook/writing-an-alsa-driver.tmpl | |||
@@ -18,8 +18,8 @@ | |||
18 | </affiliation> | 18 | </affiliation> |
19 | </author> | 19 | </author> |
20 | 20 | ||
21 | <date>March 6, 2005</date> | 21 | <date>October 6, 2005</date> |
22 | <edition>0.3.4</edition> | 22 | <edition>0.3.5</edition> |
23 | 23 | ||
24 | <abstract> | 24 | <abstract> |
25 | <para> | 25 | <para> |
@@ -30,7 +30,7 @@ | |||
30 | 30 | ||
31 | <legalnotice> | 31 | <legalnotice> |
32 | <para> | 32 | <para> |
33 | Copyright (c) 2002-2004 Takashi Iwai <email>tiwai@suse.de</email> | 33 | Copyright (c) 2002-2005 Takashi Iwai <email>tiwai@suse.de</email> |
34 | </para> | 34 | </para> |
35 | 35 | ||
36 | <para> | 36 | <para> |
@@ -5998,32 +5998,23 @@ struct _snd_pcm_runtime { | |||
5998 | The first argument is the expression to evaluate, and the | 5998 | The first argument is the expression to evaluate, and the |
5999 | second argument is the action if it fails. When | 5999 | second argument is the action if it fails. When |
6000 | <constant>CONFIG_SND_DEBUG</constant>, is set, it will show an | 6000 | <constant>CONFIG_SND_DEBUG</constant>, is set, it will show an |
6001 | error message such as <computeroutput>BUG? (xxx) (called from | 6001 | error message such as <computeroutput>BUG? (xxx)</computeroutput> |
6002 | yyy)</computeroutput>. When no debug flag is set, this is | 6002 | together with stack trace. |
6003 | ignored. | ||
6004 | </para> | 6003 | </para> |
6005 | </section> | ||
6006 | |||
6007 | <section id="useful-functions-snd-runtime-check"> | ||
6008 | <title><function>snd_runtime_check()</function></title> | ||
6009 | <para> | 6004 | <para> |
6010 | This macro is quite similar with | 6005 | When no debug flag is set, this macro is ignored. |
6011 | <function>snd_assert()</function>. Unlike | ||
6012 | <function>snd_assert()</function>, the expression is always | ||
6013 | evaluated regardless of | ||
6014 | <constant>CONFIG_SND_DEBUG</constant>. When | ||
6015 | <constant>CONFIG_SND_DEBUG</constant> is set, the macro will | ||
6016 | show a message like <computeroutput>ERROR (xx) (called from | ||
6017 | yyy)</computeroutput>. | ||
6018 | </para> | 6006 | </para> |
6019 | </section> | 6007 | </section> |
6020 | 6008 | ||
6021 | <section id="useful-functions-snd-bug"> | 6009 | <section id="useful-functions-snd-bug"> |
6022 | <title><function>snd_BUG()</function></title> | 6010 | <title><function>snd_BUG()</function></title> |
6023 | <para> | 6011 | <para> |
6024 | It calls <function>snd_assert(0,)</function> -- that is, just | 6012 | It shows <computeroutput>BUG?</computeroutput> message and |
6025 | prints the error message at the point. It's useful to show that | 6013 | stack trace as well as <function>snd_assert</function> at the point. |
6026 | a fatal error happens there. | 6014 | It's useful to show that a fatal error happens there. |
6015 | </para> | ||
6016 | <para> | ||
6017 | When no debug flag is set, this macro is ignored. | ||
6027 | </para> | 6018 | </para> |
6028 | </section> | 6019 | </section> |
6029 | </chapter> | 6020 | </chapter> |