Merge "haven: Fix non-zero input SG-List handling for MEM_ACCEPT"

 *

 *

 * On success, the function will return a pointer to an sg-list to convey where

 * the memory has been mapped. After the SG-List is no longer needed, the

 * caller must free the table. On a failure, a negative number will be returned.

 * the memory has been mapped. If the @sgl_desc parameter was not NULL, then the

 * return value will be a pointer to the same SG-List. Otherwise, the return

 * value will be a pointer to a newly allocated SG-List. After the SG-List is

 * no longer needed, the caller must free the table. On a failure, a negative

 * number will be returned.

 */

struct hh_sgl_desc *hh_rm_mem_accept(hh_memparcel_handle_t handle, u8 mem_type,

				     u8 trans_type, u8 flags, hh_label_t label,

		goto err_rm_call;

	}

	/*

	 * TODO: Shouldn't we have an input for the number of SG entries

	 * associated with the memparcel, so we can validate that the size of

	 * the response buffer is what we expect?

	 */

	if (sgl_desc) {

		ret_sgl = sgl_desc;

	} else {

		ret_sgl = kmemdup(resp_payload, offsetof(struct hh_sgl_desc,

				sgl_entries[resp_payload->n_sgl_entries]),

				  GFP_KERNEL);

			ret_sgl = ERR_PTR(-ENOMEM);

		kfree(resp_payload);

	}

err_rm_call:

	kfree(req_buf);

	return ret_sgl;