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authorTiago Vignatti <tiago.vignatti@intel.com>2015-12-23 00:36:45 +0300
committerDaniel Vetter <daniel.vetter@ffwll.ch>2016-02-09 11:25:22 +0300
commit831e9da7dc5c22fd2a5fb64e999f6e077a4338c3 (patch)
treefd781ca5f233f8559189d35f18842277844e6551 /include/linux/dma-buf.h
parentbfe981a0952880df43d08a050bf3ae44aaebd795 (diff)
downloadlinux-831e9da7dc5c22fd2a5fb64e999f6e077a4338c3.tar.xz
dma-buf: Remove range-based flush
This patch removes range-based information used for optimizations in begin_cpu_access and end_cpu_access. We don't have any user nor implementation using range-based flush. It seems a consensus that if we ever want something like that again (or even more robust using 2D, 3D sub-range regions) we can use the upcoming dma-buf sync ioctl for such. Cc: Sumit Semwal <sumit.semwal@linaro.org> Cc: Daniel Vetter <daniel.vetter@intel.com> Signed-off-by: Tiago Vignatti <tiago.vignatti@intel.com> Reviewed-by: Stéphane Marchesin <marcheu@chromium.org> Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch> Link: http://patchwork.freedesktop.org/patch/msgid/1450820214-12509-3-git-send-email-tiago.vignatti@intel.com
Diffstat (limited to 'include/linux/dma-buf.h')
-rw-r--r--include/linux/dma-buf.h12
1 files changed, 5 insertions, 7 deletions
diff --git a/include/linux/dma-buf.h b/include/linux/dma-buf.h
index f98bd7068d55..532108ea0c1c 100644
--- a/include/linux/dma-buf.h
+++ b/include/linux/dma-buf.h
@@ -54,7 +54,7 @@ struct dma_buf_attachment;
* @release: release this buffer; to be called after the last dma_buf_put.
* @begin_cpu_access: [optional] called before cpu access to invalidate cpu
* caches and allocate backing storage (if not yet done)
- * respectively pin the objet into memory.
+ * respectively pin the object into memory.
* @end_cpu_access: [optional] called after cpu access to flush caches.
* @kmap_atomic: maps a page from the buffer into kernel address
* space, users may not block until the subsequent unmap call.
@@ -93,10 +93,8 @@ struct dma_buf_ops {
/* after final dma_buf_put() */
void (*release)(struct dma_buf *);
- int (*begin_cpu_access)(struct dma_buf *, size_t, size_t,
- enum dma_data_direction);
- void (*end_cpu_access)(struct dma_buf *, size_t, size_t,
- enum dma_data_direction);
+ int (*begin_cpu_access)(struct dma_buf *, enum dma_data_direction);
+ void (*end_cpu_access)(struct dma_buf *, enum dma_data_direction);
void *(*kmap_atomic)(struct dma_buf *, unsigned long);
void (*kunmap_atomic)(struct dma_buf *, unsigned long, void *);
void *(*kmap)(struct dma_buf *, unsigned long);
@@ -224,9 +222,9 @@ struct sg_table *dma_buf_map_attachment(struct dma_buf_attachment *,
enum dma_data_direction);
void dma_buf_unmap_attachment(struct dma_buf_attachment *, struct sg_table *,
enum dma_data_direction);
-int dma_buf_begin_cpu_access(struct dma_buf *dma_buf, size_t start, size_t len,
+int dma_buf_begin_cpu_access(struct dma_buf *dma_buf,
enum dma_data_direction dir);
-void dma_buf_end_cpu_access(struct dma_buf *dma_buf, size_t start, size_t len,
+void dma_buf_end_cpu_access(struct dma_buf *dma_buf,
enum dma_data_direction dir);
void *dma_buf_kmap_atomic(struct dma_buf *, unsigned long);
void dma_buf_kunmap_atomic(struct dma_buf *, unsigned long, void *);