ARM: dmabounce: get rid of dma_needs_bounce global function

Pass the device type specific needs_bounce function in at dmabounce
register time, avoiding the need for a platform specific global
function to do this.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

1 files changed, 6 insertions, 2 deletions

diff --git a/arch/arm/common/dmabounce.c b/arch/arm/common/dmabounce.c
index 4f13505ac93..595ecd290eb 100644
--- a/arch/arm/common/dmabounce.c
+++ b/arch/arm/common/dmabounce.c
@@ -79,6 +79,8 @@ struct dmabounce_device_info {
         struct dmabounce_pool   large;
 
         rwlock_t lock;
+
+        int (*needs_bounce)(struct device *, dma_addr_t, size_t);
 };
 
 #ifdef STATS
@@ -236,7 +238,7 @@ static int needs_bounce(struct device *dev, dma_addr_t dma_addr, size_t size)
                         return 1;
         }
 
-        return dma_needs_bounce(dev, dma_addr, size) ? 1 : 0;
+        return !!dev->archdata.dmabounce->needs_bounce(dev, dma_addr, size);
 }
 
 static inline dma_addr_t map_single(struct device *dev, void *ptr, size_t size,
@@ -430,7 +432,8 @@ static int dmabounce_init_pool(struct dmabounce_pool *pool, struct device *dev,
 }
 
 int dmabounce_register_dev(struct device *dev, unsigned long small_buffer_size,
-                unsigned long large_buffer_size)
+                unsigned long large_buffer_size,
+                int (*needs_bounce_fn)(struct device *, dma_addr_t, size_t))
 {
         struct dmabounce_device_info *device_info;
         int ret;
@@ -466,6 +469,7 @@ int dmabounce_register_dev(struct device *dev, unsigned long small_buffer_size,
         device_info->dev = dev;
         INIT_LIST_HEAD(&device_info->safe_buffers);
         rwlock_init(&device_info->lock);
+        device_info->needs_bounce = needs_bounce_fn;
 
 #ifdef STATS
         device_info->total_allocs = 0;