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Subject[PATCH] 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>
---
sound/soc/soc-core.c | 51 +++++++++------------------------------------------
1 file changed, 9 insertions(+), 42 deletions(-)

diff --git a/sound/soc/soc-core.c b/sound/soc/soc-core.c
index 96c44f6576c9..cb52d1e8e0b9 100644
--- a/sound/soc/soc-core.c
+++ b/sound/soc/soc-core.c
@@ -349,33 +349,22 @@ 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 *s, void *v)
{
struct snd_soc_codec *codec;

mutex_lock(&client_mutex);

list_for_each_entry(codec, &codec_list, list)
- seq_printf(m, "%s\n", codec->component.name);
+ seq_printf(s, "%s\n", codec->component.name);

mutex_unlock(&client_mutex);

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 *s, void *v)
{
struct snd_soc_component *component;
struct snd_soc_dai *dai;
@@ -384,50 +373,28 @@ static int dai_list_seq_show(struct seq_file *m, void *v)

list_for_each_entry(component, &component_list, list)
list_for_each_entry(dai, &component->dai_list, list)
- seq_printf(m, "%s\n", dai->name);
+ seq_printf(s, "%s\n", dai->name);

mutex_unlock(&client_mutex);

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 *s, void *v)
{
struct snd_soc_platform *platform;

mutex_lock(&client_mutex);

list_for_each_entry(platform, &platform_list, list)
- seq_printf(m, "%s\n", platform->component.name);
+ seq_printf(s, "%s\n", platform->component.name);

mutex_unlock(&client_mutex);

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)
{
--
2.16.1
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