1 files changed, 26 insertions, 8 deletions

diff --git a/drivers/firewire/core-iso.c b/drivers/firewire/core-iso.c
index 8f5aebfb29df..c003fa4e2db1 100644
--- a/drivers/firewire/core-iso.c
+++ b/drivers/firewire/core-iso.c
@@ -118,6 +118,23 @@ void fw_iso_buffer_destroy(struct fw_iso_buffer *buffer,
 }
 EXPORT_SYMBOL(fw_iso_buffer_destroy);
 
+/* Convert DMA address to offset into virtually contiguous buffer. */
+size_t fw_iso_buffer_lookup(struct fw_iso_buffer *buffer, dma_addr_t completed)
+{
+        int i;
+        dma_addr_t address;
+        ssize_t offset;
+
+        for (i = 0; i < buffer->page_count; i++) {
+                address = page_private(buffer->pages[i]);
+                offset = (ssize_t)completed - (ssize_t)address;
+                if (offset > 0 && offset <= PAGE_SIZE)
+                        return (i << PAGE_SHIFT) + offset;
+        }
+
+        return 0;
+}
+
 struct fw_iso_context *fw_iso_context_create(struct fw_card *card,
                 int type, int channel, int speed, size_t header_size,
                 fw_iso_callback_t callback, void *callback_data)
@@ -134,7 +151,7 @@ struct fw_iso_context *fw_iso_context_create(struct fw_card *card,
         ctx->channel = channel;
         ctx->speed = speed;
         ctx->header_size = header_size;
-        ctx->callback = callback;
+        ctx->callback.sc = callback;
         ctx->callback_data = callback_data;
 
         return ctx;
@@ -143,9 +160,7 @@ EXPORT_SYMBOL(fw_iso_context_create);
 
 void fw_iso_context_destroy(struct fw_iso_context *ctx)
 {
-        struct fw_card *card = ctx->card;
-
-        card->driver->free_iso_context(ctx);
+        ctx->card->driver->free_iso_context(ctx);
 }
 EXPORT_SYMBOL(fw_iso_context_destroy);
 
@@ -156,14 +171,17 @@ int fw_iso_context_start(struct fw_iso_context *ctx,
 }
 EXPORT_SYMBOL(fw_iso_context_start);
 
+int fw_iso_context_set_channels(struct fw_iso_context *ctx, u64 *channels)
+{
+        return ctx->card->driver->set_iso_channels(ctx, channels);
+}
+
 int fw_iso_context_queue(struct fw_iso_context *ctx,
                          struct fw_iso_packet *packet,
                          struct fw_iso_buffer *buffer,
                          unsigned long payload)
 {
-        struct fw_card *card = ctx->card;
-
-        return card->driver->queue_iso(ctx, packet, buffer, payload);
+        return ctx->card->driver->queue_iso(ctx, packet, buffer, payload);
 }
 EXPORT_SYMBOL(fw_iso_context_queue);
 
@@ -279,7 +297,7 @@ static void deallocate_channel(struct fw_card *card, int irm_id,
 }
 
 /**
- * fw_iso_resource_manage - Allocate or deallocate a channel and/or bandwidth
+ * fw_iso_resource_manage() - Allocate or deallocate a channel and/or bandwidth
  *
  * In parameters: card, generation, channels_mask, bandwidth, allocate
  * Out parameters: channel, bandwidth