ASoC: use DEFINE_SHOW_ATTRIBUTE() to decrease code duplication

There is some duplicate code in soc-core.c, and the kernel provides
DEFINE_SHOW_ATTRIBUTE() helper macro to decrease it in seq_file.h.

Signed-off-by: Peng Donglin <dolinux.peng@gmail.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

diff --git a/sound/soc/soc-core.c b/sound/soc/soc-core.c
index 574048a..e1f047d 100644 (file)
--- a/sound/soc/soc-core.c
+++ b/sound/soc/soc-core.c
@@ -349,7 +349,7 @@ static void soc_init_codec_debugfs(struct snd_soc_component *component)
                        "ASoC: Failed to create codec register debugfs file\n");
 }
 
-static int codec_list_seq_show(struct seq_file *m, void *v)
+static int codec_list_show(struct seq_file *m, void *v)
 {
        struct snd_soc_codec *codec;
 
@@ -362,20 +362,9 @@ static int codec_list_seq_show(struct seq_file *m, void *v)
 
        return 0;
 }
+DEFINE_SHOW_ATTRIBUTE(codec_list);
 
-static int codec_list_seq_open(struct inode *inode, struct file *file)
-{
-       return single_open(file, codec_list_seq_show, NULL);
-}
-
-static const struct file_operations codec_list_fops = {
-       .open = codec_list_seq_open,
-       .read = seq_read,
-       .llseek = seq_lseek,
-       .release = single_release,
-};
-
-static int dai_list_seq_show(struct seq_file *m, void *v)
+static int dai_list_show(struct seq_file *m, void *v)
 {
        struct snd_soc_component *component;
        struct snd_soc_dai *dai;
@@ -390,20 +379,9 @@ static int dai_list_seq_show(struct seq_file *m, void *v)
 
        return 0;
 }
+DEFINE_SHOW_ATTRIBUTE(dai_list);
 
-static int dai_list_seq_open(struct inode *inode, struct file *file)
-{
-       return single_open(file, dai_list_seq_show, NULL);
-}
-
-static const struct file_operations dai_list_fops = {
-       .open = dai_list_seq_open,
-       .read = seq_read,
-       .llseek = seq_lseek,
-       .release = single_release,
-};
-
-static int platform_list_seq_show(struct seq_file *m, void *v)
+static int platform_list_show(struct seq_file *m, void *v)
 {
        struct snd_soc_platform *platform;
 
@@ -416,18 +394,7 @@ static int platform_list_seq_show(struct seq_file *m, void *v)
 
        return 0;
 }
-
-static int platform_list_seq_open(struct inode *inode, struct file *file)
-{
-       return single_open(file, platform_list_seq_show, NULL);
-}
-
-static const struct file_operations platform_list_fops = {
-       .open = platform_list_seq_open,
-       .read = seq_read,
-       .llseek = seq_lseek,
-       .release = single_release,
-};
+DEFINE_SHOW_ATTRIBUTE(platform_list);
 
 static void soc_init_card_debugfs(struct snd_soc_card *card)
 {