The current code was always returning a non-zero status value to userspace applications when this ioctl was called.
The error code was ENODATA, which isn't actually an error, it's always returned by dcd_enumerate_object() when it hits the end of list. Reorganized the code so that it works like "dynreg.out -ln" from the userspace-dspbridge package expects it to work. Signed-off-by: Ionut Nicu <[email protected]> --- drivers/staging/tidspbridge/rmgr/mgr.c | 48 ++++++++++---------------------- 1 files changed, 15 insertions(+), 33 deletions(-) diff --git a/drivers/staging/tidspbridge/rmgr/mgr.c b/drivers/staging/tidspbridge/rmgr/mgr.c index 0ea89a1..b7b7e5b 100644 --- a/drivers/staging/tidspbridge/rmgr/mgr.c +++ b/drivers/staging/tidspbridge/rmgr/mgr.c @@ -134,8 +134,7 @@ int mgr_enum_node_info(u32 node_id, struct dsp_ndbprops *pndb_props, u32 undb_props_size, u32 *pu_num_nodes) { int status = 0; - struct dsp_uuid node_uuid, temp_uuid; - u32 temp_index = 0; + struct dsp_uuid node_uuid; u32 node_index = 0; struct dcd_genericobj gen_obj; struct mgr_object *pmgr_obj = NULL; @@ -149,48 +148,31 @@ int mgr_enum_node_info(u32 node_id, struct dsp_ndbprops *pndb_props, *pu_num_nodes = 0; /* Get the Manager Object from the driver data */ if (!drv_datap || !drv_datap->mgr_object) { - status = -ENODATA; pr_err("%s: Failed to retrieve the object handle\n", __func__); - goto func_cont; - } else { - pmgr_obj = drv_datap->mgr_object; + return -ENODATA; } + pmgr_obj = drv_datap->mgr_object; DBC_ASSERT(pmgr_obj); /* Forever loop till we hit failed or no more items in the * Enumeration. We will exit the loop other than 0; */ while (status == 0) { - status = dcd_enumerate_object(temp_index++, DSP_DCDNODETYPE, - &temp_uuid); - if (status == 0) { - node_index++; - if (node_id == (node_index - 1)) - node_uuid = temp_uuid; - - } - } - if (!status) { - if (node_id > (node_index - 1)) { - status = -EINVAL; - } else { + status = dcd_enumerate_object(node_index++, DSP_DCDNODETYPE, + &node_uuid); + if (status) + break; + *pu_num_nodes = node_index; + if (node_id == (node_index - 1)) { status = dcd_get_object_def(pmgr_obj->hdcd_mgr, - (struct dsp_uuid *) - &node_uuid, DSP_DCDNODETYPE, - &gen_obj); - if (!status) { - /* Get the Obj def */ - *pndb_props = - gen_obj.obj_data.node_obj.ndb_props; - *pu_num_nodes = node_index; - } + &node_uuid, DSP_DCDNODETYPE, &gen_obj); + if (status) + break; + /* Get the Obj def */ + *pndb_props = gen_obj.obj_data.node_obj.ndb_props; } } -func_cont: - DBC_ENSURE((!status && *pu_num_nodes > 0) || - (status && *pu_num_nodes == 0)); - - return status; + return status == ENODATA ? 0 : status; } /* -- 1.7.2.3 -- To unsubscribe from this list: send the line "unsubscribe linux-omap" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
