From: Anssi Hannula <anssi.hannula@iki.fi>
Date: Sun, 8 Jun 2014 09:58:56 +0000 (+0300)
Subject: pcm: Fix channel map query when there are lots of maps
X-Git-Tag: v1.0.28~10
X-Git-Url: https://git.alsa-project.org/?a=commitdiff_plain;h=042223c4ee9b17ba8a24bcfc4019f24b69b8310b;p=alsa-lib.git

pcm: Fix channel map query when there are lots of maps

On most HDA Intel HDMI devices, the channel map list is approx. 500 ints
in size, making the 256-sized buffer used by
snd_pcm_query_chmaps_from_hw() too small and causing the query to fail
(NULL result to caller, ENOMEM).

Bump the buffer size to 2048 ints.

Signed-off-by: Anssi Hannula <anssi.hannula@iki.fi>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
---

diff --git a/src/pcm/pcm_hw.c b/src/pcm/pcm_hw.c
index 9ff83a92..ed831972 100644
--- a/src/pcm/pcm_hw.c
+++ b/src/pcm/pcm_hw.c
@@ -1051,7 +1051,7 @@ snd_pcm_query_chmaps_from_hw(int card, int dev, int subdev,
 {
 	snd_ctl_t *ctl;
 	snd_ctl_elem_id_t *id;
-	unsigned int tlv[256], *start;
+	unsigned int tlv[2048], *start;
 	snd_pcm_chmap_query_t **map;
 	int i, ret, nums;