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linux/sound/usb/debug.h
Daniel Mack 60ed286a61 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>
2011-05-18 11:44:35 +02:00

16 lines
262 B
C

#ifndef __USBAUDIO_DEBUG_H
#define __USBAUDIO_DEBUG_H
/*
* h/w constraints
*/
#ifdef HW_CONST_DEBUG
#define hwc_debug(fmt, args...) printk(KERN_DEBUG fmt, ##args)
#else
#define hwc_debug(fmt, args...) do { } while(0)
#endif
#endif /* __USBAUDIO_DEBUG_H */