gadget/function/f_fs.c

1317 	struct dma_buf *dmabuf = attach->dmabuf;
1320 	dma_resv_lock(dmabuf->resv, NULL);
1322 	dma_resv_unlock(dmabuf->resv);
1324 	dma_buf_detach(attach->dmabuf, attach);
1325 	dma_buf_put(dmabuf);
1436 static int ffs_dma_resv_lock(struct dma_buf *dmabuf, bool nonblock)
1439 		return dma_resv_lock_interruptible(dmabuf->resv, NULL);
1441 	if (!dma_resv_trylock(dmabuf->resv))
1448 ffs_dmabuf_find_attachment(struct ffs_epfile *epfile, struct dma_buf *dmabuf)
1458 		    && priv->attach->dmabuf == dmabuf) {
1481 	struct dma_buf *dmabuf;
1487 	dmabuf = dma_buf_get(fd);
1488 	if (IS_ERR(dmabuf))
1489 		return PTR_ERR(dmabuf);
1491 	attach = dma_buf_attach(dmabuf, gadget->dev.parent);
1505 	err = ffs_dma_resv_lock(dmabuf, nonblock);
1510 	dma_resv_unlock(dmabuf->resv);
1536 	dma_buf_detach(dmabuf, attach);
1538 	dma_buf_put(dmabuf);
1549 	struct dma_buf *dmabuf;
1552 	dmabuf = dma_buf_get(fd);
1553 	if (IS_ERR(dmabuf))
1554 		return PTR_ERR(dmabuf);
1560 		    && priv->attach->dmabuf == dmabuf) {
1577 	dma_buf_put(dmabuf);
1592 	struct dma_buf *dmabuf;
1603 	dmabuf = dma_buf_get(req->fd);
1604 	if (IS_ERR(dmabuf))
1605 		return PTR_ERR(dmabuf);
1607 	if (req->length > dmabuf->size || req->length == 0) {
1612 	attach = ffs_dmabuf_find_attachment(epfile, dmabuf);
1626 	ret = ffs_dma_resv_lock(dmabuf, nonblock);
1632 	retl = dma_resv_wait_timeout(dmabuf->resv,
1642 	ret = dma_resv_reserve_fences(dmabuf->resv, 1);
1680 	dma_resv_add_fence(dmabuf->resv, &fence->base, resv_dir);
1681 	dma_resv_unlock(dmabuf->resv);
1706 	dma_buf_put(dmabuf);
1714 	dma_resv_unlock(dmabuf->resv);
1718 	dma_buf_put(dmabuf);