ALSA: hda - Warn an allocation for an uninitialized array

Better to add a sanity check as I tend to forget something (especially
during crazy midsummer nights).

Signed-off-by: Takashi Iwai <tiwai@suse.de>

diff --git a/sound/pci/hda/hda_codec.c b/sound/pci/hda/hda_codec.c
index c0ab72c..70d4848 100644 (file)
--- a/sound/pci/hda/hda_codec.c
+++ b/sound/pci/hda/hda_codec.c
@@ -5168,6 +5168,8 @@ EXPORT_SYMBOL_HDA(snd_hda_resume);
  */
 void *snd_array_new(struct snd_array *array)
 {
+       if (snd_BUG_ON(!array->elem_size))
+               return NULL;
        if (array->used >= array->alloced) {
                int num = array->alloced + array->alloc_align;
                int size = (num + 1) * array->elem_size;