ASoC: dapm: Fix build warning

commit c66150824b8a ("ASoC: dapm: add code to configure dai link
parameters") introduced the following build warning:

sound/soc/soc-dapm.c: In function 'snd_soc_dapm_new_pcm':
sound/soc/soc-dapm.c:3389:4: warning: passing argument 1 of 'snprintf'
discards 'const' qualifier from pointer target type
snprintf(w_param_text[count], len,

This patch fixes this by switching to using devm_kasprintf. This also
saves a couple of lines of code.

Signed-off-by: Charles Keepax <ckeepax@opensource.wolfsonmicro.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

1 files changed, 5 insertions, 8 deletions

diff --git a/sound/soc/soc-dapm.c b/sound/soc/soc-dapm.c
index 6828b4ed5447..e5ec9d7133ae 100644
--- a/sound/soc/soc-dapm.c
+++ b/sound/soc/soc-dapm.c
@@ -3356,7 +3356,6 @@ int snd_soc_dapm_new_pcm(struct snd_soc_card *card,
 {
         struct snd_soc_dapm_widget template;
         struct snd_soc_dapm_widget *w;
-        size_t len;
         char *link_name;
         int ret, count;
         unsigned long private_value;
@@ -3376,28 +3375,26 @@ int snd_soc_dapm_new_pcm(struct snd_soc_card *card,
         if (!w_param_text)
                 return -ENOMEM;
 
-        len = strlen(source->name) + strlen(sink->name) + 2;
-        link_name = devm_kzalloc(card->dev, len, GFP_KERNEL);
+        link_name = devm_kasprintf(card->dev, GFP_KERNEL, "%s-%s",
+                                   source->name, sink->name);
         if (!link_name) {
                 ret = -ENOMEM;
                 goto outfree_w_param;
         }
-        snprintf(link_name, len, "%s-%s", source->name, sink->name);
 
         for (count = 0 ; count < num_params; count++) {
                 if (!config->stream_name) {
                         dev_warn(card->dapm.dev,
                                 "ASoC: anonymous config %d for dai link %s\n",
                                 count, link_name);
-                        len = strlen("Anonymous Configuration ") + 3;
                         w_param_text[count] =
-                                devm_kzalloc(card->dev, len, GFP_KERNEL);
+                                devm_kasprintf(card->dev, GFP_KERNEL,
+                                               "Anonymous Configuration %d",
+                                               count);
                         if (!w_param_text[count]) {
                                 ret = -ENOMEM;
                                 goto outfree_link_name;
                         }
-                        snprintf(w_param_text[count], len,
-                                "Anonymous Configuration %d", count);
                 } else {
                         w_param_text[count] = devm_kmemdup(card->dev,
                                                 config->stream_name,