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path: root/drivers/isdn/mISDN/dsp_pipeline.c
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Diffstat (limited to 'drivers/isdn/mISDN/dsp_pipeline.c')
-rw-r--r--drivers/isdn/mISDN/dsp_pipeline.c34
1 files changed, 24 insertions, 10 deletions
diff --git a/drivers/isdn/mISDN/dsp_pipeline.c b/drivers/isdn/mISDN/dsp_pipeline.c
index 83639be7f7a..bf999bdc41c 100644
--- a/drivers/isdn/mISDN/dsp_pipeline.c
+++ b/drivers/isdn/mISDN/dsp_pipeline.c
@@ -75,6 +75,15 @@ static struct device_attribute element_attributes[] = {
__ATTR(args, 0444, attr_show_args, NULL),
};
+static void
+mISDN_dsp_dev_release(struct device *dev)
+{
+ struct dsp_element_entry *entry =
+ container_of(dev, struct dsp_element_entry, dev);
+ list_del(&entry->list);
+ kfree(entry);
+}
+
int mISDN_dsp_element_register(struct mISDN_dsp_element *elem)
{
struct dsp_element_entry *entry;
@@ -83,13 +92,14 @@ int mISDN_dsp_element_register(struct mISDN_dsp_element *elem)
if (!elem)
return -EINVAL;
- entry = kzalloc(sizeof(struct dsp_element_entry), GFP_KERNEL);
+ entry = kzalloc(sizeof(struct dsp_element_entry), GFP_ATOMIC);
if (!entry)
return -ENOMEM;
entry->elem = elem;
entry->dev.class = elements_class;
+ entry->dev.release = mISDN_dsp_dev_release;
dev_set_drvdata(&entry->dev, elem);
dev_set_name(&entry->dev, elem->name);
ret = device_register(&entry->dev);
@@ -98,6 +108,7 @@ int mISDN_dsp_element_register(struct mISDN_dsp_element *elem)
__func__, elem->name);
goto err1;
}
+ list_add_tail(&entry->list, &dsp_elements);
for (i = 0; i < (sizeof(element_attributes)
/ sizeof(struct device_attribute)); ++i)
@@ -109,14 +120,15 @@ int mISDN_dsp_element_register(struct mISDN_dsp_element *elem)
goto err2;
}
- list_add_tail(&entry->list, &dsp_elements);
-
+#ifdef PIPELINE_DEBUG
printk(KERN_DEBUG "%s: %s registered\n", __func__, elem->name);
+#endif
return 0;
err2:
device_unregister(&entry->dev);
+ return ret;
err1:
kfree(entry);
return ret;
@@ -132,11 +144,11 @@ void mISDN_dsp_element_unregister(struct mISDN_dsp_element *elem)
list_for_each_entry_safe(entry, n, &dsp_elements, list)
if (entry->elem == elem) {
- list_del(&entry->list);
device_unregister(&entry->dev);
- kfree(entry);
+#ifdef PIPELINE_DEBUG
printk(KERN_DEBUG "%s: %s unregistered\n",
__func__, elem->name);
+#endif
return;
}
printk(KERN_ERR "%s: element %s not in list.\n", __func__, elem->name);
@@ -173,7 +185,9 @@ void dsp_pipeline_module_exit(void)
kfree(entry);
}
+#ifdef PIPELINE_DEBUG
printk(KERN_DEBUG "%s: dsp pipeline module exited\n", __func__);
+#endif
}
int dsp_pipeline_init(struct dsp_pipeline *pipeline)
@@ -239,7 +253,7 @@ int dsp_pipeline_build(struct dsp_pipeline *pipeline, const char *cfg)
if (!len)
return 0;
- dup = kmalloc(len + 1, GFP_KERNEL);
+ dup = kmalloc(len + 1, GFP_ATOMIC);
if (!dup)
return 0;
strcpy(dup, cfg);
@@ -256,9 +270,9 @@ int dsp_pipeline_build(struct dsp_pipeline *pipeline, const char *cfg)
elem = entry->elem;
pipeline_entry = kmalloc(sizeof(struct
- dsp_pipeline_entry), GFP_KERNEL);
+ dsp_pipeline_entry), GFP_ATOMIC);
if (!pipeline_entry) {
- printk(KERN_DEBUG "%s: failed to add "
+ printk(KERN_ERR "%s: failed to add "
"entry to pipeline: %s (out of "
"memory)\n", __func__, elem->name);
incomplete = 1;
@@ -286,7 +300,7 @@ int dsp_pipeline_build(struct dsp_pipeline *pipeline, const char *cfg)
args : "");
#endif
} else {
- printk(KERN_DEBUG "%s: failed "
+ printk(KERN_ERR "%s: failed "
"to add entry to pipeline: "
"%s (new() returned NULL)\n",
__func__, elem->name);
@@ -301,7 +315,7 @@ int dsp_pipeline_build(struct dsp_pipeline *pipeline, const char *cfg)
if (found)
found = 0;
else {
- printk(KERN_DEBUG "%s: element not found, skipping: "
+ printk(KERN_ERR "%s: element not found, skipping: "
"%s\n", __func__, name);
incomplete = 1;
}