linux-kernel - [PATCH 2/2] mn10300: Provide dummy dma_alloc_attrs() and dma_free

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Date:	Tue, 16 Jun 2015 18:16:31 +0530
From:	Sudip Mukherjee <sudipm.mukherjee@...il.com>
To:	David Howells <dhowells@...hat.com>
Cc:	linux-am33-list@...hat.com, linux-kernel@...r.kernel.org,
	Sudip Mukherjee <sudipm.mukherjee@...il.com>
Subject: [PATCH 2/2] mn10300: Provide dummy dma_alloc_attrs() and dma_free_attrs()

allmodconfig fails to build with following errors.

drivers/media/platform/sti/bdisp/bdisp-hw.c:
	In function 'bdisp_hw_free_nodes':
drivers/media/platform/sti/bdisp/bdisp-hw.c:132:3: error:
	implicit declaration of function 'dma_free_attrs'
	
drivers/media/platform/sti/bdisp/bdisp-hw.c:
	In function 'bdisp_hw_alloc_nodes':
drivers/media/platform/sti/bdisp/bdisp-hw.c:157:2: error:
	implicit declaration of function 'dma_alloc_attrs'

mn10300 does not provide those functions at this time.
Provide dummy implementations to avoid build errors.

Signed-off-by: Sudip Mukherjee <sudip@...torindia.org>
---

copied from https://lkml.org/lkml/2015/4/22/346

 arch/mn10300/include/asm/dma-mapping.h | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/arch/mn10300/include/asm/dma-mapping.h b/arch/mn10300/include/asm/dma-mapping.h
index a18abfc..d589c5e 100644
--- a/arch/mn10300/include/asm/dma-mapping.h
+++ b/arch/mn10300/include/asm/dma-mapping.h
@@ -183,4 +183,17 @@ static inline int dma_get_sgtable(struct device *dev, struct sg_table *sgt,
 	return -EINVAL;
 }
 
+static inline void *dma_alloc_attrs(struct device *dev, size_t size,
+				    dma_addr_t *dma_handle, gfp_t flag,
+				    struct dma_attrs *attrs)
+{
+	return NULL;
+}
+
+static inline void dma_free_attrs(struct device *dev, size_t size,
+				  void *vaddr, dma_addr_t dma_handle,
+				  struct dma_attrs *attrs)
+{
+}
+
 #endif
-- 
1.8.1.2

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