Commit 7a28826a authored by Dan Carpenter's avatar Dan Carpenter Committed by Takashi Iwai

ALSA: pcm: add more format names

There were some new formats added in commit 15c0cee6 "ALSA: pcm:
Define G723 3-bit and 5-bit formats".  That commit increased
SNDRV_PCM_FORMAT_LAST as well.  My concern is that there are a couple
places which do:

        for (i = 0; i < SNDRV_PCM_FORMAT_LAST; i++) {
                if (dummy->pcm_hw.formats & (1ULL << i))
                        snd_iprintf(buffer, " %s", snd_pcm_format_name(i));
        }

I haven't tested these but it looks like if "i" were equal to
SNDRV_PCM_FORMAT_G723_24 or higher then we might read past the end of
the array.
Signed-off-by: default avatarDan Carpenter <error27@gmail.com>
Signed-off-by: default avatarTakashi Iwai <tiwai@suse.de>
parent 3182c8a7
...@@ -203,10 +203,16 @@ static char *snd_pcm_format_names[] = { ...@@ -203,10 +203,16 @@ static char *snd_pcm_format_names[] = {
FORMAT(S18_3BE), FORMAT(S18_3BE),
FORMAT(U18_3LE), FORMAT(U18_3LE),
FORMAT(U18_3BE), FORMAT(U18_3BE),
FORMAT(G723_24),
FORMAT(G723_24_1B),
FORMAT(G723_40),
FORMAT(G723_40_1B),
}; };
const char *snd_pcm_format_name(snd_pcm_format_t format) const char *snd_pcm_format_name(snd_pcm_format_t format)
{ {
if (format >= ARRAY_SIZE(snd_pcm_format_names))
return "Unknown";
return snd_pcm_format_names[format]; return snd_pcm_format_names[format];
} }
EXPORT_SYMBOL_GPL(snd_pcm_format_name); EXPORT_SYMBOL_GPL(snd_pcm_format_name);
......
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