ASoC: SOF: topology: 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
  44519	   2888	     48	  47455	   b95f	sound/soc/sof/topology.o

After:
   text	   data	    bss	    dec	    hex	filename
  44839	   2552	     48	  47439	   b94f	sound/soc/sof/topology.o

Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Link: https://msgid.link/r/2d9f5b75e979eb38b6f3baf85dfa1f0fdb3447ef.1715526069.git.christophe.jaillet@wanadoo.fr
Signed-off-by: Mark Brown <broonie@kernel.org>

diff --git a/sound/soc/sof/topology.c b/sound/soc/sof/topology.c
index da182314aa8745a06084acfb09ab1a5c91fedde6..b5438213199163d305aba29cc7b94e3c9ade5a43 100644 (file)
--- a/sound/soc/sof/topology.c
+++ b/sound/soc/sof/topology.c
@@ -2278,7 +2278,7 @@ static const struct snd_soc_tplg_bytes_ext_ops sof_bytes_ext_ops[] = {
        {SOF_TPLG_KCTL_BYTES_VOLATILE_RO, snd_sof_bytes_ext_volatile_get},
 };
 
-static struct snd_soc_tplg_ops sof_tplg_ops = {
+static const struct snd_soc_tplg_ops sof_tplg_ops = {
        /* external kcontrol init - used for any driver specific init */
        .control_load   = sof_control_load,
        .control_unload = sof_control_unload,
@@ -2433,7 +2433,7 @@ static int sof_dspless_link_load(struct snd_soc_component *scomp, int index,
        return 0;
 }
 
-static struct snd_soc_tplg_ops sof_dspless_tplg_ops = {
+static const struct snd_soc_tplg_ops sof_dspless_tplg_ops = {
        /* external widget init - used for any driver specific init */
        .widget_ready   = sof_dspless_widget_ready,
        .widget_unload  = sof_dspless_widget_unload,