valgrind and alsa

["Charles \"Buck\" Krasic" <krasic@cs.ubc.ca>]

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Hi,

I'm new to alsa development.   I have just implemented native alsa 
support in an application I've developed (a streaming video system).   
When checking my application with valgrind,  valgrin generates numerous 
alsa related warnings.   They all seem to originate from a single 
problem in my initial call to snd_pcm_writei.  Basically valgrind 
doesn't like that alsa is making an ioctl with unitialized data.  The 
following patch fixed the problem for me, it's just a one liner add the 
missing initializtion.

Cheers,

-- Buck

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--- pcm_hw.c-old	2005-02-24 00:36:02.906722553 -0800
+++ pcm_hw.c	2005-02-24 00:35:37.390399025 -0800
@@ -664,6 +664,7 @@
 	struct sndrv_xferi xferi;
 	xferi.buf = (char*) buffer;
 	xferi.frames = size;
+	xferi.result = 0;
 	err = ioctl(fd, SNDRV_PCM_IOCTL_WRITEI_FRAMES, &xferi);
 	err = err >= 0 ? sync_ptr(hw, SNDRV_PCM_SYNC_PTR_APPL) : -errno;
 #ifdef DEBUG_RW