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dma-buf: Rename dma-ops to prevent conflict with kunmap_atomic macro

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Seeing the kunmap_atomic dma_buf_ops share the same name with a macro
in highmem.h, the former can be aliased if any dma-buf user includes
that header.

I'm personally trying to include highmem.h inside scatterlist.h and this
breaks the dma-buf code proper.

Christoph Hellwig suggested [1] renaming it and pushing this patch ASAP.

To maintain consistency I've renamed all four of kmap* and kunmap* to be
map* and unmap*. (Even though only kmap_atomic presently conflicts.)

[1] https://www.spinics.net/lists/target-devel/msg15070.html

Signed-off-by: Logan Gunthorpe <[email protected]>
Reviewed-by: Sinclair Yeh <[email protected]>
Acked-by: Daniel Vetter <[email protected]>
Acked-by: Sumit Semwal <[email protected]>
Signed-off-by: Sumit Semwal <[email protected]>
Link: http://patchwork.freedesktop.org/patch/msgid/[email protected]
This commit is contained in:
Logan Gunthorpe 2017-04-19 13:36:10 -06:00 • committed by Sumit Semwal
commit f9b67f0014
14 changed files with 61 additions and 61 deletions
Download patch file Download diff file Expand all files Collapse all files

16
drivers/dma-buf/dma-buf.c
View file

@ -405,8 +405,8 @@ struct dma_buf *dma_buf_export(const struct dma_buf_export_info *exp_info)
|| !exp_info->ops->map_dma_buf
|| !exp_info->ops->unmap_dma_buf
|| !exp_info->ops->release
|| !exp_info->ops->kmap_atomic
|| !exp_info->ops->kmap
|| !exp_info->ops->map_atomic
|| !exp_info->ops->map
|| !exp_info->ops->mmap)) {
return ERR_PTR(-EINVAL);
}
@ -872,7 +872,7 @@ void *dma_buf_kmap_atomic(struct dma_buf *dmabuf, unsigned long page_num)
{
WARN_ON(!dmabuf);
return dmabuf->ops->kmap_atomic(dmabuf, page_num);
return dmabuf->ops->map_atomic(dmabuf, page_num);
}
EXPORT_SYMBOL_GPL(dma_buf_kmap_atomic);
@ -889,8 +889,8 @@ void dma_buf_kunmap_atomic(struct dma_buf *dmabuf, unsigned long page_num,
{
WARN_ON(!dmabuf);
if (dmabuf->ops->kunmap_atomic)
dmabuf->ops->kunmap_atomic(dmabuf, page_num, vaddr);
if (dmabuf->ops->unmap_atomic)
dmabuf->ops->unmap_atomic(dmabuf, page_num, vaddr);
}
EXPORT_SYMBOL_GPL(dma_buf_kunmap_atomic);
@ -907,7 +907,7 @@ void *dma_buf_kmap(struct dma_buf *dmabuf, unsigned long page_num)
{
WARN_ON(!dmabuf);
return dmabuf->ops->kmap(dmabuf, page_num);
return dmabuf->ops->map(dmabuf, page_num);
}
EXPORT_SYMBOL_GPL(dma_buf_kmap);
@ -924,8 +924,8 @@ void dma_buf_kunmap(struct dma_buf *dmabuf, unsigned long page_num,
{
WARN_ON(!dmabuf);
if (dmabuf->ops->kunmap)
dmabuf->ops->kunmap(dmabuf, page_num, vaddr);
if (dmabuf->ops->unmap)
dmabuf->ops->unmap(dmabuf, page_num, vaddr);
}
EXPORT_SYMBOL_GPL(dma_buf_kunmap);