[ALSA] Remove vmalloc wrapper, kfree_nocheck()
- Remove vmalloc wrapper
- Add release_and_free_resource() to remove kfree_nocheck() from each driver
and simplify the code
Signed-off-by: Takashi Iwai <tiwai@suse.de>
diff --git a/Documentation/sound/alsa/DocBook/writing-an-alsa-driver.tmpl b/Documentation/sound/alsa/DocBook/writing-an-alsa-driver.tmpl
index ab3dfe0..05ae29a 100644
--- a/Documentation/sound/alsa/DocBook/writing-an-alsa-driver.tmpl
+++ b/Documentation/sound/alsa/DocBook/writing-an-alsa-driver.tmpl
@@ -1433,25 +1433,10 @@
<informalexample>
<programlisting>
<![CDATA[
- if (chip->res_port) {
- release_resource(chip->res_port);
- kfree_nocheck(chip->res_port);
- }
+ release_and_free_resource(chip->res_port);
]]>
</programlisting>
</informalexample>
-
- As you can see, the resource pointer is also to be freed
- via <function>kfree_nocheck()</function> after
- <function>release_resource()</function> is called. You
- cannot use <function>kfree()</function> here, because on ALSA,
- <function>kfree()</function> may be a wrapper to its own
- allocator with the memory debugging. Since the resource pointer
- is allocated externally outside the ALSA, it must be released
- via the native
- <function>kfree()</function>.
- <function>kfree_nocheck()</function> is used for that; it calls
- the native <function>kfree()</function> without wrapper.
</para>
<para>