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dma-buf: add poll support, v3

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Thanks to Fengguang Wu for spotting a missing static cast.

v2:
- Kill unused variable need_shared.
v3:
- Clarify the BUG() in dma_buf_release some more. (Rob Clark)

Signed-off-by: Maarten Lankhorst <maarten.lankhorst@canonical.com>
Acked-by: Sumit Semwal <sumit.semwal@linaro.org>
Acked-by: Daniel Vetter <daniel@ffwll.ch>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Maarten Lankhorst 2014-07-01 12:57:43 +02:00 • committed by Greg Kroah-Hartman
parent 0ba6b8fb91
commit 9b495a5887
2 changed files with 120 additions and 0 deletions
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12
include/linux/dma-buf.h
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@ -30,6 +30,8 @@
#include <linux/list.h>
#include <linux/dma-mapping.h>
#include <linux/fs.h>
#include <linux/fence.h>
#include <linux/wait.h>
struct device;
struct dma_buf;
@ -130,6 +132,16 @@ struct dma_buf {
struct list_head list_node;
void *priv;
struct reservation_object *resv;
/* poll support */
wait_queue_head_t poll;
struct dma_buf_poll_cb_t {
struct fence_cb cb;
wait_queue_head_t *poll;
unsigned long active;
} cb_excl, cb_shared;
};
/**