From a8d149813b4456b689effb1f10accdc937566703 Mon Sep 17 00:00:00 2001 From: Takashi Iwai Date: Mon, 4 Feb 2019 15:02:11 +0100 Subject: [PATCH] ALSA: pcm: Remove superfluous snd_info_register() calls The calls of snd_info_register() are superfluous and should be avoided at the procfs creation time. They are called at the end of the whole initialization via snd_card_register(). This patch drops such superfluous calls, as well as cleaning up the calls of substream proc entries with a common helper. Reviewed-by: Jaroslav Kysela Signed-off-by: Takashi Iwai --- sound/core/pcm.c | 81 ++++++++++++++--------------------------- sound/core/pcm_memory.c | 21 +++++------ 2 files changed, 37 insertions(+), 65 deletions(-) diff --git a/sound/core/pcm.c b/sound/core/pcm.c index 4f45b3000347..7b63aee124af 100644 --- a/sound/core/pcm.c +++ b/sound/core/pcm.c @@ -528,28 +528,17 @@ static int snd_pcm_stream_proc_init(struct snd_pcm_str *pstr) if (!entry) return -ENOMEM; entry->mode = S_IFDIR | 0555; - if (snd_info_register(entry) < 0) { - snd_info_free_entry(entry); - return -ENOMEM; - } pstr->proc_root = entry; entry = snd_info_create_card_entry(pcm->card, "info", pstr->proc_root); - if (entry) { + if (entry) snd_info_set_text_ops(entry, pstr, snd_pcm_stream_proc_info_read); - if (snd_info_register(entry) < 0) - snd_info_free_entry(entry); - } - #ifdef CONFIG_SND_PCM_XRUN_DEBUG entry = snd_info_create_card_entry(pcm->card, "xrun_debug", pstr->proc_root); if (entry) { - entry->c.text.read = snd_pcm_xrun_debug_read; + snd_info_set_text_ops(entry, pstr, snd_pcm_xrun_debug_read); entry->c.text.write = snd_pcm_xrun_debug_write; entry->mode |= 0200; - entry->private_data = pstr; - if (snd_info_register(entry) < 0) - snd_info_free_entry(entry); } #endif return 0; @@ -562,6 +551,21 @@ static int snd_pcm_stream_proc_done(struct snd_pcm_str *pstr) return 0; } +static struct snd_info_entry * +create_substream_info_entry(struct snd_pcm_substream *substream, + const char *name, + void (*read)(struct snd_info_entry *, + struct snd_info_buffer *)) +{ + struct snd_info_entry *entry; + + entry = snd_info_create_card_entry(substream->pcm->card, name, + substream->proc_root); + if (entry) + snd_info_set_text_ops(entry, substream, read); + return entry; +} + static int snd_pcm_substream_proc_init(struct snd_pcm_substream *substream) { struct snd_info_entry *entry; @@ -576,53 +580,22 @@ static int snd_pcm_substream_proc_init(struct snd_pcm_substream *substream) if (!entry) return -ENOMEM; entry->mode = S_IFDIR | 0555; - if (snd_info_register(entry) < 0) { - snd_info_free_entry(entry); - return -ENOMEM; - } substream->proc_root = entry; - entry = snd_info_create_card_entry(card, "info", substream->proc_root); - if (entry) { - snd_info_set_text_ops(entry, substream, - snd_pcm_substream_proc_info_read); - if (snd_info_register(entry) < 0) - snd_info_free_entry(entry); - } - entry = snd_info_create_card_entry(card, "hw_params", - substream->proc_root); - if (entry) { - snd_info_set_text_ops(entry, substream, - snd_pcm_substream_proc_hw_params_read); - if (snd_info_register(entry) < 0) - snd_info_free_entry(entry); - } - entry = snd_info_create_card_entry(card, "sw_params", - substream->proc_root); - if (entry) { - snd_info_set_text_ops(entry, substream, - snd_pcm_substream_proc_sw_params_read); - if (snd_info_register(entry) < 0) - snd_info_free_entry(entry); - } - entry = snd_info_create_card_entry(card, "status", - substream->proc_root); - if (entry) { - snd_info_set_text_ops(entry, substream, - snd_pcm_substream_proc_status_read); - if (snd_info_register(entry) < 0) - snd_info_free_entry(entry); - } + + create_substream_info_entry(substream, "info", + snd_pcm_substream_proc_info_read); + create_substream_info_entry(substream, "hw_params", + snd_pcm_substream_proc_hw_params_read); + create_substream_info_entry(substream, "sw_params", + snd_pcm_substream_proc_sw_params_read); + create_substream_info_entry(substream, "status", + snd_pcm_substream_proc_status_read); #ifdef CONFIG_SND_PCM_XRUN_DEBUG - entry = snd_info_create_card_entry(card, "xrun_injection", - substream->proc_root); + entry = create_substream_info_entry(substream, "xrun_injection", NULL); if (entry) { - entry->private_data = substream; - entry->c.text.read = NULL; entry->c.text.write = snd_pcm_xrun_injection_write; entry->mode = S_IFREG | 0200; - if (snd_info_register(entry) < 0) - snd_info_free_entry(entry); } #endif /* CONFIG_SND_PCM_XRUN_DEBUG */ diff --git a/sound/core/pcm_memory.c b/sound/core/pcm_memory.c index 9a98bc61461f..4012a3a01de1 100644 --- a/sound/core/pcm_memory.c +++ b/sound/core/pcm_memory.c @@ -192,20 +192,19 @@ static inline void preallocate_info_init(struct snd_pcm_substream *substream) { struct snd_info_entry *entry; - if ((entry = snd_info_create_card_entry(substream->pcm->card, "prealloc", substream->proc_root)) != NULL) { - entry->c.text.read = snd_pcm_lib_preallocate_proc_read; + entry = snd_info_create_card_entry(substream->pcm->card, "prealloc", + substream->proc_root); + if (entry) { + snd_info_set_text_ops(entry, substream, + snd_pcm_lib_preallocate_proc_read); entry->c.text.write = snd_pcm_lib_preallocate_proc_write; entry->mode |= 0200; - entry->private_data = substream; - if (snd_info_register(entry) < 0) - snd_info_free_entry(entry); - } - if ((entry = snd_info_create_card_entry(substream->pcm->card, "prealloc_max", substream->proc_root)) != NULL) { - entry->c.text.read = snd_pcm_lib_preallocate_max_proc_read; - entry->private_data = substream; - if (snd_info_register(entry) < 0) - snd_info_free_entry(entry); } + entry = snd_info_create_card_entry(substream->pcm->card, "prealloc_max", + substream->proc_root); + if (entry) + snd_info_set_text_ops(entry, substream, + snd_pcm_lib_preallocate_max_proc_read); } #else /* !CONFIG_SND_VERBOSE_PROCFS */