dma-contiguous: remove dma_declare_contiguous

dma_declare_contiguous is a trivial wrapper around
dma_contiguous_reserve_area and just has a single caller.
Signed-off-by: NChristoph Hellwig <hch@lst.de>

arch/arm/mach-davinci/devices-da8xx.c

@@ -884,6 +884,7 @@ early_param("rproc_mem", early_rproc_mem);
 
 void __init da8xx_rproc_reserve_cma(void)
 {
+	struct cma *cma;
 	int ret;
 
 	if (!rproc_base || !rproc_size) {
@@ -897,13 +898,16 @@ void __init da8xx_rproc_reserve_cma(void)
 	pr_info("%s: reserving 0x%lx @ 0x%lx...\n",
 		__func__, rproc_size, (unsigned long)rproc_base);
 
-	ret = dma_declare_contiguous(&da8xx_dsp.dev, rproc_size, rproc_base, 0);
-	if (ret)
-		pr_err("%s: dma_declare_contiguous failed %d\n", __func__, ret);
-	else
-		rproc_mem_inited = true;
+	ret = dma_contiguous_reserve_area(rproc_size, rproc_base, 0, &cma,
+			true);
+	if (ret) {
+		pr_err("%s: dma_contiguous_reserve_area failed %d\n",
+			__func__, ret);
+		return;
+	}
+	dev_set_cma_area(&da8xx_dsp.dev, cma);
+	rproc_mem_inited = true;
 }
-
 #else
 
 void __init da8xx_rproc_reserve_cma(void)

include/linux/dma-contiguous.h

@@ -83,31 +83,6 @@ int __init dma_contiguous_reserve_area(phys_addr_t size, phys_addr_t base,
 				       phys_addr_t limit, struct cma **res_cma,
 				       bool fixed);
 
-/**
- * dma_declare_contiguous() - reserve area for contiguous memory handling
- *			      for particular device
- * @dev:   Pointer to device structure.
- * @size:  Size of the reserved memory.
- * @base:  Start address of the reserved memory (optional, 0 for any).
- * @limit: End address of the reserved memory (optional, 0 for any).
- *
- * This function reserves memory for specified device. It should be
- * called by board specific code when early allocator (memblock or bootmem)
- * is still activate.
- */
-
-static inline int dma_declare_contiguous(struct device *dev, phys_addr_t size,
-					 phys_addr_t base, phys_addr_t limit)
-{
-	struct cma *cma;
-	int ret;
-	ret = dma_contiguous_reserve_area(size, base, limit, &cma, true);
-	if (ret == 0)
-		dev_set_cma_area(dev, cma);
-
-	return ret;
-}
-
 struct page *dma_alloc_from_contiguous(struct device *dev, size_t count,
 				       unsigned int order, bool no_warn);
 bool dma_release_from_contiguous(struct device *dev, struct page *pages,
@@ -135,13 +110,6 @@ static inline int dma_contiguous_reserve_area(phys_addr_t size, phys_addr_t base
 	return -ENOSYS;
 }
 
-static inline
-int dma_declare_contiguous(struct device *dev, phys_addr_t size,
-			   phys_addr_t base, phys_addr_t limit)
-{
-	return -ENOSYS;
-}
-
 static inline
 struct page *dma_alloc_from_contiguous(struct device *dev, size_t count,
 				       unsigned int order, bool no_warn)