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authorLiam Girdwood <lrg@ti.com>2011-05-24 13:57:43 +0100
committerMark Brown <broonie@opensource.wolfsonmicro.com>2011-05-24 23:25:34 +0800
commit61b61e3c5c9bf37ca2915ac981f444989ab22f10 (patch)
tree019b9855a861a10f4ad344739ebcbeb706ed23fc /sound
parent477a66948ef8683f182682cc68e8520baf8a5b43 (diff)
ASoC: core - fix module reference counting for CPU DAIs
Currently CODEC and platform drivers have their module reference count incremented soc_probe_dai_link() whilst CPU DAI drivers have their reference count incremented in soc_bind_dai_link(). CPU DAIs should have their reference count incremented in soc_probe_dai_link() just like the CODEC and platform drivers. Signed-off-by: Liam Girdwood <lrg@ti.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Diffstat (limited to 'sound')
-rw-r--r--sound/soc/soc-core.c9
1 files changed, 5 insertions, 4 deletions
diff --git a/sound/soc/soc-core.c b/sound/soc/soc-core.c
index bb7cd581294..07991d43879 100644
--- a/sound/soc/soc-core.c
+++ b/sound/soc/soc-core.c
@@ -1306,10 +1306,6 @@ static int soc_bind_dai_link(struct snd_soc_card *card, int num)
/* no, then find CPU DAI from registered DAIs*/
list_for_each_entry(cpu_dai, &dai_list, list) {
if (!strcmp(cpu_dai->name, dai_link->cpu_dai_name)) {
-
- if (!try_module_get(cpu_dai->dev->driver->owner))
- return -ENODEV;
-
rtd->cpu_dai = cpu_dai;
goto find_codec;
}
@@ -1621,12 +1617,17 @@ static int soc_probe_dai_link(struct snd_soc_card *card, int num)
rtd->pmdown_time = pmdown_time;
/* probe the cpu_dai */
+
if (!cpu_dai->probed) {
+ if (!try_module_get(cpu_dai->dev->driver->owner))
+ return -ENODEV;
+
if (cpu_dai->driver->probe) {
ret = cpu_dai->driver->probe(cpu_dai);
if (ret < 0) {
printk(KERN_ERR "asoc: failed to probe CPU DAI %s\n",
cpu_dai->name);
+ module_put(cpu_dai->dev->driver->owner);
return ret;
}
}