1 files changed, 37 insertions, 14 deletions

diff --git a/arch/sh/drivers/dma/dma-api.c b/arch/sh/drivers/dma/dma-api.c
index 96e3036ec2bb..47c3e837599b 100644
--- a/arch/sh/drivers/dma/dma-api.c
+++ b/arch/sh/drivers/dma/dma-api.c
@@ -3,7 +3,7 @@
  *
  * SuperH-specific DMA management API
  *
- * Copyright (C) 2003, 2004  Paul Mundt
+ * Copyright (C) 2003, 2004, 2005  Paul Mundt
  *
  * This file is subject to the terms and conditions of the GNU General Public
  * License.  See the file "COPYING" in the main directory of this archive
@@ -15,6 +15,7 @@
 #include <linux/spinlock.h>
 #include <linux/proc_fs.h>
 #include <linux/list.h>
+#include <linux/platform_device.h>
 #include <asm/dma.h>
 
 DEFINE_SPINLOCK(dma_spin_lock);
@@ -55,16 +56,14 @@ static LIST_HEAD(registered_dmac_list);
 
 struct dma_info *get_dma_info(unsigned int chan)
 {
-        struct list_head *pos, *tmp;
+        struct dma_info *info;
         unsigned int total = 0;
 
         /*
          * Look for each DMAC's range to determine who the owner of
          * the channel is.
          */
-        list_for_each_safe(pos, tmp, &registered_dmac_list) {
-                struct dma_info *info = list_entry(pos, struct dma_info, list);
-
+        list_for_each_entry(info, &registered_dmac_list, list) {
                 total += info->nr_channels;
                 if (chan > total)
                         continue;
@@ -75,6 +74,20 @@ struct dma_info *get_dma_info(unsigned int chan)
         return NULL;
 }
 
+static unsigned int get_nr_channels(void)
+{
+        struct dma_info *info;
+        unsigned int nr = 0;
+
+        if (unlikely(list_empty(&registered_dmac_list)))
+                return nr;
+
+        list_for_each_entry(info, &registered_dmac_list, list)
+                nr += info->nr_channels;
+
+        return nr;
+}
+
 struct dma_channel *get_dma_channel(unsigned int chan)
 {
         struct dma_info *info = get_dma_info(chan);
@@ -173,7 +186,7 @@ int dma_xfer(unsigned int chan, unsigned long from,
 static int dma_read_proc(char *buf, char **start, off_t off,
                          int len, int *eof, void *data)
 {
-        struct list_head *pos, *tmp;
+        struct dma_info *info;
         char *p = buf;
 
         if (list_empty(&registered_dmac_list))
@@ -182,8 +195,7 @@ static int dma_read_proc(char *buf, char **start, off_t off,
         /*
          * Iterate over each registered DMAC
          */
-        list_for_each_safe(pos, tmp, &registered_dmac_list) {
-                struct dma_info *info = list_entry(pos, struct dma_info, list);
+        list_for_each_entry(info, &registered_dmac_list, list) {
                 int i;
 
                 /*
@@ -205,9 +217,9 @@ static int dma_read_proc(char *buf, char **start, off_t off,
 #endif
 
 
-int __init register_dmac(struct dma_info *info)
+int register_dmac(struct dma_info *info)
 {
-        int i;
+        unsigned int total_channels, i;
 
         INIT_LIST_HEAD(&info->list);
 
@@ -217,6 +229,11 @@ int __init register_dmac(struct dma_info *info)
 
         BUG_ON((info->flags & DMAC_CHANNELS_CONFIGURED) && !info->channels);
 
+        info->pdev = platform_device_register_simple((char *)info->name, -1,
+                                                     NULL, 0);
+        if (IS_ERR(info->pdev))
+                return PTR_ERR(info->pdev);
+
         /*
          * Don't touch pre-configured channels
          */
@@ -232,10 +249,12 @@ int __init register_dmac(struct dma_info *info)
                 memset(info->channels, 0, size);
         }
 
+        total_channels = get_nr_channels();
         for (i = 0; i < info->nr_channels; i++) {
                 struct dma_channel *chan = info->channels + i;
 
                 chan->chan = i;
+                chan->vchan = i + total_channels;
 
                 memcpy(chan->dev_id, "Unused", 7);
 
@@ -245,9 +264,7 @@ int __init register_dmac(struct dma_info *info)
                 init_MUTEX(&chan->sem);
                 init_waitqueue_head(&chan->wait_queue);
 
-#ifdef CONFIG_SYSFS
-                dma_create_sysfs_files(chan);
-#endif
+                dma_create_sysfs_files(chan, info);
         }
 
         list_add(&info->list, &registered_dmac_list);
@@ -255,12 +272,18 @@ int __init register_dmac(struct dma_info *info)
         return 0;
 }
 
-void __exit unregister_dmac(struct dma_info *info)
+void unregister_dmac(struct dma_info *info)
 {
+        unsigned int i;
+
+        for (i = 0; i < info->nr_channels; i++)
+                dma_remove_sysfs_files(info->channels + i, info);
+
         if (!(info->flags & DMAC_CHANNELS_CONFIGURED))
                 kfree(info->channels);
 
         list_del(&info->list);
+        platform_device_unregister(info->pdev);
 }
 
 static int __init dma_api_init(void)