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drm/syncobj: add a new helper drm_syncobj_get_fd 

Reviewed-by: Dave Airlie <airlied@redhat.com>
Signed-off-by: Marek Olšák <marek.olsak@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Marek Olšák 2017-09-12 22:42:13 +02:00 committed by Alex Deucher
parent 1321fd2c01
commit 684fd0af47
2 changed files with 24 additions and 18 deletions
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41
drivers/gpu/drm/drm_syncobj.c
View File

@ -386,33 +386,38 @@ static int drm_syncobj_alloc_file(struct drm_syncobj *syncobj)
return 0;
}
int drm_syncobj_get_fd(struct drm_syncobj *syncobj, int *p_fd)
{
int ret;
int fd;
fd = get_unused_fd_flags(O_CLOEXEC);
if (fd < 0)
return fd;
if (!syncobj->file) {
ret = drm_syncobj_alloc_file(syncobj);
if (ret) {
put_unused_fd(fd);
return ret;
}
}
fd_install(fd, syncobj->file);
*p_fd = fd;
return 0;
}
EXPORT_SYMBOL(drm_syncobj_get_fd);
static int drm_syncobj_handle_to_fd(struct drm_file *file_private,
u32 handle, int *p_fd)
{
struct drm_syncobj *syncobj = drm_syncobj_find(file_private, handle);
int ret;
int fd;
if (!syncobj)
return -EINVAL;
fd = get_unused_fd_flags(O_CLOEXEC);
if (fd < 0) {
drm_syncobj_put(syncobj);
return fd;
}
if (!syncobj->file) {
ret = drm_syncobj_alloc_file(syncobj);
if (ret)
goto out_put_fd;
}
fd_install(fd, syncobj->file);
drm_syncobj_put(syncobj);
*p_fd = fd;
return 0;
out_put_fd:
put_unused_fd(fd);
ret = drm_syncobj_get_fd(syncobj, p_fd);
drm_syncobj_put(syncobj);
return ret;
}

1
include/drm/drm_syncobj.h
View File

@ -140,5 +140,6 @@ int drm_syncobj_create(struct drm_syncobj **out_syncobj, uint32_t flags,
struct dma_fence *fence);
int drm_syncobj_get_handle(struct drm_file *file_private,
struct drm_syncobj *syncobj, u32 *handle);
int drm_syncobj_get_fd(struct drm_syncobj *syncobj, int *p_fd);
#endif