diff options
| author | Daniel Mack <zonque@gmail.com> | 2011-05-18 05:28:39 -0400 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2011-05-18 05:44:35 -0400 |
| commit | 60ed286a61b43e3fedf18e63f2d71b758f3505aa (patch) | |
| tree | 2ed34a95001e561a3dbb4b331edee677273cb355 | |
| parent | 23dc05a33fd45c1f53b51e6ad9a209bf021a16c8 (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>
| -rw-r--r-- | sound/usb/debug.h | 2 |
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 @@ | |||
| 8 | #ifdef HW_CONST_DEBUG | 8 | #ifdef HW_CONST_DEBUG |
| 9 | #define hwc_debug(fmt, args...) printk(KERN_DEBUG fmt, ##args) | 9 | #define hwc_debug(fmt, args...) printk(KERN_DEBUG fmt, ##args) |
| 10 | #else | 10 | #else |
| 11 | #define hwc_debug(fmt, args...) /**/ | 11 | #define hwc_debug(fmt, args...) do { } while(0) |
| 12 | #endif | 12 | #endif |
| 13 | 13 | ||
| 14 | #endif /* __USBAUDIO_DEBUG_H */ | 14 | #endif /* __USBAUDIO_DEBUG_H */ |