From: Scott Jiang <scott.jiang.linux@gmail.com>
To: Marek Szyprowski <m.szyprowski@samsung.com>,
<linux-media@vger.kernel.org>
Cc: Scott Jiang <scott.jiang.linux@gmail.com>
Subject: [PATCH] [media] dma-mapping: enable no mmu support in dma_common_mmap
Date: Tue, 5 Mar 2013 18:40:11 -0500 [thread overview]
Message-ID: <1362526811-15768-1-git-send-email-scott.jiang.linux@gmail.com> (raw)
No MMU systems also make use of this function to do mmap.
Signed-off-by: Scott Jiang <scott.jiang.linux@gmail.com>
---
drivers/base/dma-mapping.c | 2 --
1 files changed, 0 insertions(+), 2 deletions(-)
diff --git a/drivers/base/dma-mapping.c b/drivers/base/dma-mapping.c
index 0ce39a3..ae655b2 100644
--- a/drivers/base/dma-mapping.c
+++ b/drivers/base/dma-mapping.c
@@ -245,7 +245,6 @@ int dma_common_mmap(struct device *dev, struct vm_area_struct *vma,
void *cpu_addr, dma_addr_t dma_addr, size_t size)
{
int ret = -ENXIO;
-#ifdef CONFIG_MMU
unsigned long user_count = (vma->vm_end - vma->vm_start) >> PAGE_SHIFT;
unsigned long count = PAGE_ALIGN(size) >> PAGE_SHIFT;
unsigned long pfn = page_to_pfn(virt_to_page(cpu_addr));
@@ -262,7 +261,6 @@ int dma_common_mmap(struct device *dev, struct vm_area_struct *vma,
user_count << PAGE_SHIFT,
vma->vm_page_prot);
}
-#endif /* CONFIG_MMU */
return ret;
}
--
1.7.0.4
next reply other threads:[~2013-03-05 10:38 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-03-05 23:40 Scott Jiang [this message]
2013-03-13 15:54 ` [PATCH] [media] dma-mapping: enable no mmu support in dma_common_mmap Marek Szyprowski
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