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authorDaniel Mack <zonque@gmail.com>2011-05-18 11:28:39 +0200
committerTakashi Iwai <tiwai@suse.de>2011-05-18 11:44:35 +0200
commit60ed286a61b43e3fedf18e63f2d71b758f3505aa (patch)
tree2ed34a95001e561a3dbb4b331edee677273cb355 /sound/usb
parent23dc05a33fd45c1f53b51e6ad9a209bf021a16c8 (diff)
ALSA: usb-audio: make hwc_debug a noop in case HW_CONST_DEBUG is not set
Just defining it to nothing is dangerous as it can alter the code execution flow, for example when used in as only function in a conditional code block. Signed-off-by: Daniel Mack <zonque@gmail.com> Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound/usb')
-rw-r--r--sound/usb/debug.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/sound/usb/debug.h b/sound/usb/debug.h
index 343ec2d9ee6..58030176f00 100644
--- a/sound/usb/debug.h
+++ b/sound/usb/debug.h
@@ -8,7 +8,7 @@
#ifdef HW_CONST_DEBUG
#define hwc_debug(fmt, args...) printk(KERN_DEBUG fmt, ##args)
#else
-#define hwc_debug(fmt, args...) /**/
+#define hwc_debug(fmt, args...) do { } while(0)
#endif
#endif /* __USBAUDIO_DEBUG_H */