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pcm: hw: fix to initialize function local variable

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This commit is to fix below warning.

pcm_hw.c: In function ‘snd1_pcm_hw_open_fd’:
pcm_hw.c:955:33: warning: ‘mmap_control’ may be used uninitialized in this function [-Wmaybe-uninitialized]
  if (mmap_control == MAP_FAILED || mmap_control == NULL) {
                                 ^
pcm_hw.c:946:31: note: ‘mmap_control’ was declared here
  struct snd_pcm_mmap_control *mmap_control;
                               ^~~~~~~~~~~~

Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Takashi Sakamoto 2017-06-30 19:50:00 +09:00 • committed by Takashi Iwai
parent 8ef3805f1b
commit ec16d21f86
1 changed files with 1 additions and 0 deletions
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src/pcm/pcm_hw.c
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@ -904,6 +904,7 @@ static bool map_control_data(snd_pcm_hw_t *hw,
struct snd_pcm_mmap_control *mmap_control;
bool fallbacked;
mmap_control = MAP_FAILED;
if (!force_fallback) {
mmap_control = mmap(NULL, page_align(sizeof(*mmap_control)),
PROT_READ|PROT_WRITE, MAP_FILE|MAP_SHARED,