From: Takashi Iwai <tiwai@suse.de>
Date: Wed, 10 Oct 2012 06:59:14 +0000 (+0200)
Subject: ALSA: hda - Warn an allocation for an uninitialized array
X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=12f1771709ea53f11cf633c065d6160769795f24;p=linux.git

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 c0ab72cbeed12..70d4848b5cd0a 100644
--- 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;