mlx4_core: Don't read reserved fields in mlx4_QUERY_ADAPTER()

The firmware QUERY_ADAPTER command does not return vendor_id,
device_id, and revision_id; eliminate these fields from the query.

Initialize the rev_id field of the mlx4 device via init_node_data (MAD
IFC query), as is done in the query_device verb implementation.
Signed-off-by: Jack Morgenstein <jackm@dev.mellanox.co.il>
Signed-off-by: Roland Dreier <rolandd@cisco.com>

drivers/infiniband/hw/mlx4/main.c

@@ -468,6 +468,7 @@ static int init_node_data(struct mlx4_ib_dev *dev)
 	if (err)
 		goto out;
 
+	dev->dev->rev_id = be32_to_cpup((__be32 *) (out_mad->data + 32));
 	memcpy(&dev->ib_dev.node_guid, out_mad->data + 12, 8);
 
 out:

drivers/net/mlx4/fw.c

@@ -617,9 +617,6 @@ int mlx4_QUERY_ADAPTER(struct mlx4_dev *dev, struct mlx4_adapter *adapter)
 	int err;
 
 #define QUERY_ADAPTER_OUT_SIZE             0x100
-#define QUERY_ADAPTER_VENDOR_ID_OFFSET     0x00
-#define QUERY_ADAPTER_DEVICE_ID_OFFSET     0x04
-#define QUERY_ADAPTER_REVISION_ID_OFFSET   0x08
 #define QUERY_ADAPTER_INTA_PIN_OFFSET      0x10
 #define QUERY_ADAPTER_VSD_OFFSET           0x20
 
@@ -633,9 +630,6 @@ int mlx4_QUERY_ADAPTER(struct mlx4_dev *dev, struct mlx4_adapter *adapter)
 	if (err)
 		goto out;
 
-	MLX4_GET(adapter->vendor_id, outbox,   QUERY_ADAPTER_VENDOR_ID_OFFSET);
-	MLX4_GET(adapter->device_id, outbox,   QUERY_ADAPTER_DEVICE_ID_OFFSET);
-	MLX4_GET(adapter->revision_id, outbox, QUERY_ADAPTER_REVISION_ID_OFFSET);
 	MLX4_GET(adapter->inta_pin, outbox,    QUERY_ADAPTER_INTA_PIN_OFFSET);
 
 	get_board_id(outbox + QUERY_ADAPTER_VSD_OFFSET / 4,

drivers/net/mlx4/fw.h

@@ -99,9 +99,6 @@ struct mlx4_dev_cap {
 };
 
 struct mlx4_adapter {
-	u32  vendor_id;
-	u32  device_id;
-	u32  revision_id;
 	char board_id[MLX4_BOARD_ID_LEN];
 	u8   inta_pin;
 };

drivers/net/mlx4/main.c

@@ -534,7 +534,6 @@ static int mlx4_init_hca(struct mlx4_dev *dev)
 	}
 
 	priv->eq_table.inta_pin = adapter.inta_pin;
-	dev->rev_id		= adapter.revision_id;
 	memcpy(dev->board_id, adapter.board_id, sizeof dev->board_id);
 
 	return 0;