linux-kernel - [PATCH 2/6] ASoC: Intel: avs: Constify struct snd_soc_tplg

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Date: Mon, 13 May 2024 19:37:21 +0200
From: Christophe JAILLET <christophe.jaillet@...adoo.fr>
To: lgirdwood@...il.com,
	broonie@...nel.org,
	perex@...ex.cz,
	tiwai@...e.com,
	cezary.rojewski@...el.com,
	pierre-louis.bossart@...ux.intel.com,
	peter.ujfalusi@...ux.intel.com,
	yung-chuan.liao@...ux.intel.com,
	ranjani.sridharan@...ux.intel.com,
	kai.vehmanen@...ux.intel.com,
	srinivas.kandagatla@...aro.org,
	bgoswami@...cinc.com,
	daniel.baluta@....com
Cc: linux-sound@...r.kernel.org,
	alsa-devel@...a-project.org,
	sound-open-firmware@...a-project.org,
	linux-kernel@...r.kernel.org,
	kernel-janitors@...r.kernel.org,
	Christophe JAILLET <christophe.jaillet@...adoo.fr>
Subject: [PATCH 2/6] ASoC: Intel: avs: Constify struct snd_soc_tplg_ops

Constifying "struct snd_soc_tplg_ops" moves some data to a read-only
section, so increase overall security.

On a x86_64, with allmodconfig:
Before:
   text	   data	    bss	    dec	    hex	filename
  28046	    794	      0	  28840	   70a8	sound/soc/intel/avs/topology.o

After:
   text	   data	    bss	    dec	    hex	filename
  28206	    614	      0	  28820	   7094	sound/soc/intel/avs/topology.o

Signed-off-by: Christophe JAILLET <christophe.jaillet@...adoo.fr>
---
Compile tested-only.
---
 sound/soc/intel/avs/topology.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/sound/soc/intel/avs/topology.c b/sound/soc/intel/avs/topology.c
index 02bae207f6ec..35381a835c93 100644
--- a/sound/soc/intel/avs/topology.c
+++ b/sound/soc/intel/avs/topology.c
@@ -1889,7 +1889,7 @@ avs_control_load(struct snd_soc_component *comp, int index, struct snd_kcontrol_
 	return 0;
 }
 
-static struct snd_soc_tplg_ops avs_tplg_ops = {
+static const struct snd_soc_tplg_ops avs_tplg_ops = {
 	.io_ops			= avs_control_ops,
 	.io_ops_count		= ARRAY_SIZE(avs_control_ops),
 	.control_load		= avs_control_load,
-- 
2.45.0