staging: fsl-dpaa2/eth: Don't account SWA in tx_data_offset
authorBogdan Purcareata <bogdan.purcareata@nxp.com>
Sun, 29 Oct 2017 08:20:41 +0000 (08:20 +0000)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Fri, 3 Nov 2017 15:18:43 +0000 (16:18 +0100)
When configuring the Tx buffer layout, the software annotation size is
mentioned, and MC accounts for it when configuring the frame
tx_data_offset. No need to handle it in the driver as well.

This results in 64B less memory allocated per frame.

Signed-off-by: Bogdan Purcareata <bogdan.purcareata@nxp.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
drivers/staging/fsl-dpaa2/ethernet/dpaa2-eth.c

index 92faaafaa013e27cd4b3fd5915978353bad1ae9b..d68c1f5f87468f413967134f110f57fb6aa61673 100644 (file)
@@ -1872,9 +1872,6 @@ static int setup_dpni(struct fsl_mc_device *ls_dev)
                dev_warn(dev, "Tx data offset (%d) not a multiple of 64B\n",
                         priv->tx_data_offset);
 
-       /* Accommodate software annotation space (SWA) */
-       priv->tx_data_offset += DPAA2_ETH_SWA_SIZE;
-
        return 0;
 
 close: