ALSA: Introduce snd_BUG_ON() macro
Introduced snd_BUG_ON() macro as a replacement of snd_assert() macro.
snd_assert() is pretty ugly as it has the control flow in its argument.
OTOH, snd_BUG_ON() behaves like a normal conditional, thus it's much
easier to read the flow.
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
diff --git a/include/sound/core.h b/include/sound/core.h
index 1a4ff0b..938c36a 100644
--- a/include/sound/core.h
+++ b/include/sound/core.h
@@ -28,6 +28,7 @@
#include <linux/rwsem.h> /* struct rw_semaphore */
#include <linux/pm.h> /* pm_message_t */
#include <linux/device.h>
+#include <linux/stringify.h>
/* number of supported soundcards */
#ifdef CONFIG_SND_DYNAMIC_MINORS
@@ -405,11 +406,14 @@
dump_stack(); \
} while (0)
+#define snd_BUG_ON(cond) WARN((cond), "BUG? (%s)\n", __stringify(cond))
+
#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 */
#endif /* CONFIG_SND_DEBUG */
