ALSA: Kill snd_assert() definition

Remove snd_assert() completely now.
Signed-off-by: NTakashi Iwai <tiwai@suse.de>
Signed-off-by: NJaroslav Kysela <perex@perex.cz>

Documentation/sound/alsa/DocBook/writing-an-alsa-driver.tmpl

@@ -6135,38 +6135,11 @@ struct _snd_pcm_runtime {
       </para>
     </section>
 
-    <section id="useful-functions-snd-assert">
-      <title><function>snd_assert()</function></title>
-      <para>
-        <function>snd_assert()</function> macro is similar with the
-      normal <function>assert()</function> macro. For example,  
-
-        <informalexample>
-          <programlisting>
-<![CDATA[
-  snd_assert(pointer != NULL, return -EINVAL);
-]]>
-          </programlisting>
-        </informalexample>
-      </para>
-
-      <para>
-        The first argument is the expression to evaluate, and the
-      second argument is the action if it fails. When
-      <constant>CONFIG_SND_DEBUG</constant>, is set, it will show an
-      error message such as <computeroutput>BUG? (xxx)</computeroutput>
-      together with stack trace.
-      </para>
-      <para>
-	 When no debug flag is set, this macro is ignored. 
-      </para>
-    </section>
-
     <section id="useful-functions-snd-bug">
       <title><function>snd_BUG()</function></title>
       <para>
         It shows the <computeroutput>BUG?</computeroutput> message and
-      stack trace as well as <function>snd_assert</function> at the point.
+      stack trace as well as <function>snd_BUG_ON</function> at the point.
       It's useful to show that a fatal error happens there. 
       </para>
       <para>

include/sound/core.h

@@ -368,8 +368,6 @@ void snd_verbose_printd(const char *file, int line, const char *format, ...)
 
 #ifdef CONFIG_SND_DEBUG
 
-#define __ASTRING__(x) #x
-
 #ifdef CONFIG_SND_VERBOSE_PRINTK
 /**
  * snd_printd - debug printk
@@ -384,22 +382,6 @@ void snd_verbose_printd(const char *file, int line, const char *format, ...)
 #define snd_printd(fmt, args...) \
 	printk(fmt ,##args)
 #endif
-/**
- * snd_assert - run-time assertion macro
- * @expr: expression
- *
- * This macro checks the expression in run-time and invokes the commands
- * given in the rest arguments if the assertion is failed.
- * When CONFIG_SND_DEBUG is not set, the expression is executed but
- * not checked.
- */
-#define snd_assert(expr, args...) do {					\
-	if (unlikely(!(expr))) {					\
-		snd_printk(KERN_ERR "BUG? (%s)\n", __ASTRING__(expr));	\
-		dump_stack();						\
-		args;							\
-	}								\
-} while (0)
 
 #define snd_BUG() do {				\
 	snd_printk(KERN_ERR "BUG?\n");		\
@@ -411,7 +393,6 @@ void snd_verbose_printd(const char *file, int line, const char *format, ...)
 #else /* !CONFIG_SND_DEBUG */
 
 #define snd_printd(fmt, args...)	/* nothing */
-#define snd_assert(expr, args...)	(void)(expr)
 #define snd_BUG()			/* nothing */
 #define snd_BUG_ON(cond)	({/*(void)(cond);*/ 0;})  /* always false */