/*
* Digital Audio (PCM) abstract layer
- * Copyright (c) by Jaroslav Kysela <perex@suse.cz>
+ * Copyright (c) by Jaroslav Kysela <perex@perex.cz>
*
*
* This program is free software; you can redistribute it and/or modify
*
*/
-#include <sound/driver.h>
#include <asm/io.h>
#include <linux/time.h>
#include <linux/init.h>
struct snd_dma_buffer *dmab = &substream->dma_buffer;
int err;
- snd_assert(size > 0, return -EINVAL);
-
/* already reserved? */
if (snd_dma_get_reserved_buf(dmab, substream->dma_buf_id) > 0) {
if (dmab->bytes >= size)
{
snd_pcm_lib_preallocate_dma_free(substream);
#ifdef CONFIG_SND_VERBOSE_PROCFS
+ snd_info_free_entry(substream->proc_prealloc_max_entry);
+ substream->proc_prealloc_max_entry = NULL;
snd_info_free_entry(substream->proc_prealloc_entry);
substream->proc_prealloc_entry = NULL;
#endif
snd_iprintf(buffer, "%lu\n", (unsigned long) substream->dma_buffer.bytes / 1024);
}
+/*
+ * read callback for prealloc_max proc file
+ *
+ * prints the maximum allowed size in kB.
+ */
+static void snd_pcm_lib_preallocate_max_proc_read(struct snd_info_entry *entry,
+ struct snd_info_buffer *buffer)
+{
+ struct snd_pcm_substream *substream = entry->private_data;
+ snd_iprintf(buffer, "%lu\n", (unsigned long) substream->dma_max / 1024);
+}
+
/*
* write callback for prealloc proc file
*
}
}
substream->proc_prealloc_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 = NULL;
+ }
+ }
+ substream->proc_prealloc_max_entry = entry;
}
#else /* !CONFIG_SND_VERBOSE_PROCFS */
struct snd_pcm_runtime *runtime;
struct snd_dma_buffer *dmab = NULL;
- snd_assert(substream->dma_buffer.dev.type != SNDRV_DMA_TYPE_UNKNOWN, return -EINVAL);
- snd_assert(substream != NULL, return -EINVAL);
+ if (PCM_RUNTIME_CHECK(substream))
+ return -EINVAL;
+ if (snd_BUG_ON(substream->dma_buffer.dev.type ==
+ SNDRV_DMA_TYPE_UNKNOWN))
+ return -EINVAL;
runtime = substream->runtime;
- snd_assert(runtime != NULL, return -EINVAL);
if (runtime->dma_buffer_p) {
/* perphaps, we might free the large DMA memory region
{
struct snd_pcm_runtime *runtime;
- snd_assert(substream != NULL, return -EINVAL);
+ if (PCM_RUNTIME_CHECK(substream))
+ return -EINVAL;
runtime = substream->runtime;
- snd_assert(runtime != NULL, return -EINVAL);
if (runtime->dma_area == NULL)
return 0;
if (runtime->dma_buffer_p != &substream->dma_buffer) {