[13/26] iommu/dma: Remove __iommu_dma_free
diff mbox series

Message ID 20190422175942.18788-14-hch@lst.de
State New, archived
Headers show
Series
  • [01/26] arm64/iommu: handle non-remapped addresses in ->mmap and ->get_sgtable
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Commit Message

Christoph Hellwig April 22, 2019, 5:59 p.m. UTC
We only have a single caller of this function left, so open code it there.

Signed-off-by: Christoph Hellwig <hch@lst.de>
---
 drivers/iommu/dma-iommu.c | 21 ++-------------------
 1 file changed, 2 insertions(+), 19 deletions(-)

Comments

Robin Murphy April 29, 2019, 1:18 p.m. UTC | #1
On 22/04/2019 18:59, Christoph Hellwig wrote:
> We only have a single caller of this function left, so open code it there.

Heh, I even caught myself out for a moment thinking this looked 
redundant with #18 now, but no :)

Reviewed-by: Robin Murphy <robin.murphy@arm.com>

> Signed-off-by: Christoph Hellwig <hch@lst.de>
> ---
>   drivers/iommu/dma-iommu.c | 21 ++-------------------
>   1 file changed, 2 insertions(+), 19 deletions(-)
> 
> diff --git a/drivers/iommu/dma-iommu.c b/drivers/iommu/dma-iommu.c
> index b8e46e89a60a..4632b9d301a1 100644
> --- a/drivers/iommu/dma-iommu.c
> +++ b/drivers/iommu/dma-iommu.c
> @@ -534,24 +534,6 @@ static struct page **__iommu_dma_get_pages(void *cpu_addr)
>   	return area->pages;
>   }
>   
> -/**
> - * iommu_dma_free - Free a buffer allocated by iommu_dma_alloc_remap()
> - * @dev: Device which owns this buffer
> - * @pages: Array of buffer pages as returned by __iommu_dma_alloc_remap()
> - * @size: Size of buffer in bytes
> - * @handle: DMA address of buffer
> - *
> - * Frees both the pages associated with the buffer, and the array
> - * describing them
> - */
> -static void __iommu_dma_free(struct device *dev, struct page **pages,
> -		size_t size, dma_addr_t *handle)
> -{
> -	__iommu_dma_unmap(dev, *handle, size);
> -	__iommu_dma_free_pages(pages, PAGE_ALIGN(size) >> PAGE_SHIFT);
> -	*handle = DMA_MAPPING_ERROR;
> -}
> -
>   /**
>    * iommu_dma_alloc_remap - Allocate and map a buffer contiguous in IOVA space
>    * @dev: Device to allocate memory for. Must be a real device
> @@ -1034,7 +1016,8 @@ static void iommu_dma_free(struct device *dev, size_t size, void *cpu_addr,
>   
>   		if (WARN_ON(!pages))
>   			return;
> -		__iommu_dma_free(dev, pages, iosize, &handle);
> +		__iommu_dma_unmap(dev, handle, iosize);
> +		__iommu_dma_free_pages(pages, size >> PAGE_SHIFT);
>   		dma_common_free_remap(cpu_addr, size, VM_USERMAP);
>   	} else {
>   		__iommu_dma_unmap(dev, handle, iosize);
>

Patch
diff mbox series

diff --git a/drivers/iommu/dma-iommu.c b/drivers/iommu/dma-iommu.c
index b8e46e89a60a..4632b9d301a1 100644
--- a/drivers/iommu/dma-iommu.c
+++ b/drivers/iommu/dma-iommu.c
@@ -534,24 +534,6 @@  static struct page **__iommu_dma_get_pages(void *cpu_addr)
 	return area->pages;
 }
 
-/**
- * iommu_dma_free - Free a buffer allocated by iommu_dma_alloc_remap()
- * @dev: Device which owns this buffer
- * @pages: Array of buffer pages as returned by __iommu_dma_alloc_remap()
- * @size: Size of buffer in bytes
- * @handle: DMA address of buffer
- *
- * Frees both the pages associated with the buffer, and the array
- * describing them
- */
-static void __iommu_dma_free(struct device *dev, struct page **pages,
-		size_t size, dma_addr_t *handle)
-{
-	__iommu_dma_unmap(dev, *handle, size);
-	__iommu_dma_free_pages(pages, PAGE_ALIGN(size) >> PAGE_SHIFT);
-	*handle = DMA_MAPPING_ERROR;
-}
-
 /**
  * iommu_dma_alloc_remap - Allocate and map a buffer contiguous in IOVA space
  * @dev: Device to allocate memory for. Must be a real device
@@ -1034,7 +1016,8 @@  static void iommu_dma_free(struct device *dev, size_t size, void *cpu_addr,
 
 		if (WARN_ON(!pages))
 			return;
-		__iommu_dma_free(dev, pages, iosize, &handle);
+		__iommu_dma_unmap(dev, handle, iosize);
+		__iommu_dma_free_pages(pages, size >> PAGE_SHIFT);
 		dma_common_free_remap(cpu_addr, size, VM_USERMAP);
 	} else {
 		__iommu_dma_unmap(dev, handle, iosize);