Smatch complains that "tmp" can be uninitialized if we do a zero size write.

Fixes: 02a5d6925cd3 ("ALSA: pcm: Avoid potential races between OSS ioctls and read/write") Signed-off-by: Dan Carpenter dan.carpenter@oracle.com

diff --git a/sound/core/oss/pcm_oss.c b/sound/core/oss/pcm_oss.c index a9082f219561..40852c595453 100644 --- a/sound/core/oss/pcm_oss.c +++ b/sound/core/oss/pcm_oss.c @@ -1364,7 +1364,7 @@ static ssize_t snd_pcm_oss_write2(struct snd_pcm_substream *substream, const cha static ssize_t snd_pcm_oss_write1(struct snd_pcm_substream *substream, const char __user *buf, size_t bytes) { size_t xfer = 0; - ssize_t tmp; + ssize_t tmp = 0; struct snd_pcm_runtime *runtime = substream->runtime;

if (atomic_read(&substream->mmap_count)) @@ -1474,7 +1474,7 @@ static ssize_t snd_pcm_oss_read2(struct snd_pcm_substream *substream, char *buf, static ssize_t snd_pcm_oss_read1(struct snd_pcm_substream *substream, char __user *buf, size_t bytes) { size_t xfer = 0; - ssize_t tmp; + ssize_t tmp = 0; struct snd_pcm_runtime *runtime = substream->runtime;

if (atomic_read(&substream->mmap_count))