/*
- * Copyright (c) by Jaroslav Kysela <perex@suse.cz>
+ * Copyright (c) by Jaroslav Kysela <perex@perex.cz>
* GUS's memory access via proc filesystem
*
*
*
*/
-#include <sound/driver.h>
#include <linux/slab.h>
#include <sound/core.h>
#include <sound/gus.h>
struct snd_gus_card * gus;
};
-static long snd_gf1_mem_proc_dump(struct snd_info_entry *entry, void *file_private_data,
- struct file *file, char __user *buf,
- unsigned long count, unsigned long pos)
+static ssize_t snd_gf1_mem_proc_dump(struct snd_info_entry *entry,
+ void *file_private_data,
+ struct file *file, char __user *buf,
+ size_t count, loff_t pos)
{
- long size;
struct gus_proc_private *priv = entry->private_data;
struct snd_gus_card *gus = priv->gus;
int err;
- size = count;
- if (pos + size > priv->size)
- size = (long)priv->size - pos;
- if (size > 0) {
- if ((err = snd_gus_dram_read(gus, buf, pos, size, priv->rom)) < 0)
- return err;
- return size;
- }
- return 0;
+ err = snd_gus_dram_read(gus, buf, pos, count, priv->rom);
+ if (err < 0)
+ return err;
+ return count;
}
-static long long snd_gf1_mem_proc_llseek(struct snd_info_entry *entry,
- void *private_file_data,
- struct file *file,
- long long offset,
- int orig)
-{
- struct gus_proc_private *priv = entry->private_data;
-
- switch (orig) {
- case 0: /* SEEK_SET */
- file->f_pos = offset;
- break;
- case 1: /* SEEK_CUR */
- file->f_pos += offset;
- break;
- case 2: /* SEEK_END, offset is negative */
- file->f_pos = priv->size + offset;
- break;
- default:
- return -EINVAL;
- }
- if (file->f_pos > priv->size)
- file->f_pos = priv->size;
- return file->f_pos;
-}
-
static void snd_gf1_mem_proc_free(struct snd_info_entry *entry)
{
struct gus_proc_private *priv = entry->private_data;
static struct snd_info_entry_ops snd_gf1_mem_proc_ops = {
.read = snd_gf1_mem_proc_dump,
- .llseek = snd_gf1_mem_proc_llseek,
};
int snd_gf1_mem_proc_init(struct snd_gus_card * gus)