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authorKuninori Morimoto <kuninori.morimoto.gx@renesas.com>2019-05-27 07:51:34 (GMT)
committerMark Brown <broonie@kernel.org>2019-05-28 14:45:53 (GMT)
commit29040d1ac569606fece70966179de272cfc0d4db (patch)
tree01c7312960cc0df774eb87f5251f469c3e60d7c0
parent34ac3c3eb8f0c07252ceddf0a22dd240e5c91ccb (diff)
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ASoC: soc-core: fixup references at soc_cleanup_card_resources()
commit 53e947a0e1f7 ("ASoC: soc-core: merge card resources cleanup method") merged cleanup method of snd_soc_instantiate_card() and soc_cleanup_card_resources(). But, after this commit, if user uses unbind/bind to Component factor drivers, Kernel might indicates refcount error at soc_cleanup_card_resources(). The 1st reason is card->snd_card is still exist even though snd_card_free() was called, but it is already cleaned. We need to set NULL to it. 2nd is card->dapm and card create debugfs, but its dentry is still exist even though it was removed. We need to set NULL to it. Fixes: 53e947a0e1f7 ("ASoC: soc-core: merge card resources cleanup method") Cc: stable@vger.kernel.org # for v5.1 Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> Signed-off-by: Mark Brown <broonie@kernel.org>
-rw-r--r--sound/soc/soc-core.c7
-rw-r--r--sound/soc/soc-dapm.c3
2 files changed, 9 insertions, 1 deletions
diff --git a/sound/soc/soc-core.c b/sound/soc/soc-core.c
index 7c94159..46042d4 100644
--- a/sound/soc/soc-core.c
+++ b/sound/soc/soc-core.c
@@ -228,7 +228,10 @@ static void soc_init_card_debugfs(struct snd_soc_card *card)
static void soc_cleanup_card_debugfs(struct snd_soc_card *card)
{
+ if (!card->debugfs_card_root)
+ return;
debugfs_remove_recursive(card->debugfs_card_root);
+ card->debugfs_card_root = NULL;
}
static void snd_soc_debugfs_init(void)
@@ -2039,8 +2042,10 @@ match:
static int soc_cleanup_card_resources(struct snd_soc_card *card)
{
/* free the ALSA card at first; this syncs with pending operations */
- if (card->snd_card)
+ if (card->snd_card) {
snd_card_free(card->snd_card);
+ card->snd_card = NULL;
+ }
/* remove and free each DAI */
soc_remove_dai_links(card);
diff --git a/sound/soc/soc-dapm.c b/sound/soc/soc-dapm.c
index 62e27de..5fc57af 100644
--- a/sound/soc/soc-dapm.c
+++ b/sound/soc/soc-dapm.c
@@ -2192,7 +2192,10 @@ static void dapm_debugfs_add_widget(struct snd_soc_dapm_widget *w)
static void dapm_debugfs_cleanup(struct snd_soc_dapm_context *dapm)
{
+ if (!dapm->debugfs_dapm)
+ return;
debugfs_remove_recursive(dapm->debugfs_dapm);
+ dapm->debugfs_dapm = NULL;
}
#else