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authorRussell King <rmk+kernel@arm.linux.org.uk>2011-07-04 08:32:21 +0100
committerRussell King <rmk+kernel@arm.linux.org.uk>2011-07-04 08:39:55 +0100
commit0703ed2a6b260cd743adf49a8281eb064d728832 (patch)
tree95740f9e1beb8901f163c7168b3e2666eb2158c9 /arch/arm/include
parentc289b2e0ccff1142908e20398930dc2e14697e74 (diff)
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>
Diffstat (limited to 'arch/arm/include')
-rw-r--r--arch/arm/include/asm/dma-mapping.h22
1 files changed, 2 insertions, 20 deletions
diff --git a/arch/arm/include/asm/dma-mapping.h b/arch/arm/include/asm/dma-mapping.h
index d2903d0c308..4ad25337f92 100644
--- a/arch/arm/include/asm/dma-mapping.h
+++ b/arch/arm/include/asm/dma-mapping.h
@@ -256,14 +256,14 @@ int dma_mmap_writecombine(struct device *, struct vm_area_struct *,
* @dev: valid struct device pointer
* @small_buf_size: size of buffers to use with small buffer pool
* @large_buf_size: size of buffers to use with large buffer pool (can be 0)
+ * @needs_bounce_fn: called to determine whether buffer needs bouncing
*
* This function should be called by low-level platform code to register
* a device as requireing DMA buffer bouncing. The function will allocate
* appropriate DMA pools for the device.
- *
*/
extern int dmabounce_register_dev(struct device *, unsigned long,
- unsigned long);
+ unsigned long, int (*)(struct device *, dma_addr_t, size_t));
/**
* dmabounce_unregister_dev
@@ -277,24 +277,6 @@ extern int dmabounce_register_dev(struct device *, unsigned long,
*/
extern void dmabounce_unregister_dev(struct device *);
-/**
- * dma_needs_bounce
- *
- * @dev: valid struct device pointer
- * @dma_handle: dma_handle of unbounced buffer
- * @size: size of region being mapped
- *
- * Platforms that utilize the dmabounce mechanism must implement
- * this function.
- *
- * The dmabounce routines call this function whenever a dma-mapping
- * is requested to determine whether a given buffer needs to be bounced
- * or not. The function must return 0 if the buffer is OK for
- * DMA access and 1 if the buffer needs to be bounced.
- *
- */
-extern int dma_needs_bounce(struct device*, dma_addr_t, size_t);
-
/*
* The DMA API, implemented by dmabounce.c. See below for descriptions.
*/