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authorLinus Torvalds <torvalds@linux-foundation.org>2015-04-24 20:05:39 +0300
committerLinus Torvalds <torvalds@linux-foundation.org>2015-04-24 20:05:39 +0300
commitb3f4ef0bf21da37e4dfc1cdfa0288ba39186fb56 (patch)
tree7239d8ee8302e3bb7ff74d9bc6195ab6bb52295c /include
parentd6a4c0e5d3d433ef296f8f417e835329a834a256 (diff)
parent72449cb47b0104c32ff8fb9380ade9113375d8d1 (diff)
downloadlinux-b3f4ef0bf21da37e4dfc1cdfa0288ba39186fb56.tar.xz
Merge tag 'dma-buf-for-4.1' of git://git.kernel.org/pub/scm/linux/kernel/git/sumits/dma-buf
Pull dma-buf updates from Sumit Semwal: "Minor cleanup only; this could've gone in for the 4.0 merge window, but for a copy-paste stupidity from me. It has been in the for-next since then, and no issues reported. - cleanup of dma_buf_export() - correction of copy-paste stupidity while doing the cleanup" * tag 'dma-buf-for-4.1' of git://git.kernel.org/pub/scm/linux/kernel/git/sumits/dma-buf: staging: android: ion: fix wrong init of dma_buf_export_info dma-buf: cleanup dma_buf_export() to make it easily extensible
Diffstat (limited to 'include')
-rw-r--r--include/linux/dma-buf.h34
1 files changed, 28 insertions, 6 deletions
diff --git a/include/linux/dma-buf.h b/include/linux/dma-buf.h
index 694e1fe1c4b4..2f0b431b73e0 100644
--- a/include/linux/dma-buf.h
+++ b/include/linux/dma-buf.h
@@ -163,6 +163,33 @@ struct dma_buf_attachment {
};
/**
+ * struct dma_buf_export_info - holds information needed to export a dma_buf
+ * @exp_name: name of the exporting module - useful for debugging.
+ * @ops: Attach allocator-defined dma buf ops to the new buffer
+ * @size: Size of the buffer
+ * @flags: mode flags for the file
+ * @resv: reservation-object, NULL to allocate default one
+ * @priv: Attach private data of allocator to this buffer
+ *
+ * This structure holds the information required to export the buffer. Used
+ * with dma_buf_export() only.
+ */
+struct dma_buf_export_info {
+ const char *exp_name;
+ const struct dma_buf_ops *ops;
+ size_t size;
+ int flags;
+ struct reservation_object *resv;
+ void *priv;
+};
+
+/**
+ * helper macro for exporters; zeros and fills in most common values
+ */
+#define DEFINE_DMA_BUF_EXPORT_INFO(a) \
+ struct dma_buf_export_info a = { .exp_name = KBUILD_MODNAME }
+
+/**
* get_dma_buf - convenience wrapper for get_file.
* @dmabuf: [in] pointer to dma_buf
*
@@ -181,12 +208,7 @@ struct dma_buf_attachment *dma_buf_attach(struct dma_buf *dmabuf,
void dma_buf_detach(struct dma_buf *dmabuf,
struct dma_buf_attachment *dmabuf_attach);
-struct dma_buf *dma_buf_export_named(void *priv, const struct dma_buf_ops *ops,
- size_t size, int flags, const char *,
- struct reservation_object *);
-
-#define dma_buf_export(priv, ops, size, flags, resv) \
- dma_buf_export_named(priv, ops, size, flags, KBUILD_MODNAME, resv)
+struct dma_buf *dma_buf_export(const struct dma_buf_export_info *exp_info);
int dma_buf_fd(struct dma_buf *dmabuf, int flags);
struct dma_buf *dma_buf_get(int fd);