ethernet: ucc_geth: remove {rx,tx}_glbl_pram_offset from struct ucc_geth_private

These fields are only used within ucc_geth_startup(), so they might as
well be local variables in that function rather than being stashed in
struct ucc_geth_private.

Aside from making that struct a tiny bit smaller, it also shortens
some lines (getting rid of pointless casts while here), and fixes the
problems with using IS_ERR_VALUE() on a u32 as explained in commit
800cd6fb76f0 ("soc: fsl: qe: change return type of cpm_muram_alloc()
to s32").

Signed-off-by: Rasmus Villemoes <rasmus.villemoes@prevas.dk>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

diff --git a/drivers/net/ethernet/freescale/ucc_geth.c b/drivers/net/ethernet/freescale/ucc_geth.c
index 74ee2ed..7546648 100644 (file)
--- a/drivers/net/ethernet/freescale/ucc_geth.c
+++ b/drivers/net/ethernet/freescale/ucc_geth.c
@@ -2351,6 +2351,7 @@ static int ucc_geth_startup(struct ucc_geth_private *ugeth)
        u8 function_code = 0;
        u8 __iomem *endOfRing;
        u8 numThreadsRxNumerical, numThreadsTxNumerical;
+       s32 rx_glbl_pram_offset, tx_glbl_pram_offset;
 
        ugeth_vdbg("%s: IN", __func__);
        uccf = ugeth->uccf;
@@ -2495,17 +2496,15 @@ static int ucc_geth_startup(struct ucc_geth_private *ugeth)
         */
        /* Tx global PRAM */
        /* Allocate global tx parameter RAM page */
-       ugeth->tx_glbl_pram_offset =
+       tx_glbl_pram_offset =
            qe_muram_alloc(sizeof(struct ucc_geth_tx_global_pram),
                           UCC_GETH_TX_GLOBAL_PRAM_ALIGNMENT);
-       if (IS_ERR_VALUE(ugeth->tx_glbl_pram_offset)) {
+       if (tx_glbl_pram_offset < 0) {
                if (netif_msg_ifup(ugeth))
                        pr_err("Can not allocate DPRAM memory for p_tx_glbl_pram\n");
                return -ENOMEM;
        }
-       ugeth->p_tx_glbl_pram =
-           (struct ucc_geth_tx_global_pram __iomem *) qe_muram_addr(ugeth->
-                                                       tx_glbl_pram_offset);
+       ugeth->p_tx_glbl_pram = qe_muram_addr(tx_glbl_pram_offset);
        /* Fill global PRAM */
 
        /* TQPTR */
@@ -2656,17 +2655,15 @@ static int ucc_geth_startup(struct ucc_geth_private *ugeth)
 
        /* Rx global PRAM */
        /* Allocate global rx parameter RAM page */
-       ugeth->rx_glbl_pram_offset =
+       rx_glbl_pram_offset =
            qe_muram_alloc(sizeof(struct ucc_geth_rx_global_pram),
                           UCC_GETH_RX_GLOBAL_PRAM_ALIGNMENT);
-       if (IS_ERR_VALUE(ugeth->rx_glbl_pram_offset)) {
+       if (rx_glbl_pram_offset < 0) {
                if (netif_msg_ifup(ugeth))
                        pr_err("Can not allocate DPRAM memory for p_rx_glbl_pram\n");
                return -ENOMEM;
        }
-       ugeth->p_rx_glbl_pram =
-           (struct ucc_geth_rx_global_pram __iomem *) qe_muram_addr(ugeth->
-                                                       rx_glbl_pram_offset);
+       ugeth->p_rx_glbl_pram = qe_muram_addr(rx_glbl_pram_offset);
        /* Fill global PRAM */
 
        /* RQPTR */
@@ -2928,7 +2925,7 @@ static int ucc_geth_startup(struct ucc_geth_private *ugeth)
            ((u32) ug_info->numThreadsTx) << ENET_INIT_PARAM_TGF_SHIFT;
 
        ugeth->p_init_enet_param_shadow->rgftgfrxglobal |=
-           ugeth->rx_glbl_pram_offset | ug_info->riscRx;
+           rx_glbl_pram_offset | ug_info->riscRx;
        if ((ug_info->largestexternallookupkeysize !=
             QE_FLTR_LARGEST_EXTERNAL_TABLE_LOOKUP_KEY_SIZE_NONE) &&
            (ug_info->largestexternallookupkeysize !=
@@ -2966,7 +2963,7 @@ static int ucc_geth_startup(struct ucc_geth_private *ugeth)
        }
 
        ugeth->p_init_enet_param_shadow->txglobal =
-           ugeth->tx_glbl_pram_offset | ug_info->riscTx;
+           tx_glbl_pram_offset | ug_info->riscTx;
        if ((ret_val =
             fill_init_enet_entries(ugeth,
                                    &(ugeth->p_init_enet_param_shadow->

diff --git a/drivers/net/ethernet/freescale/ucc_geth.h b/drivers/net/ethernet/freescale/ucc_geth.h
index 11d4bf5..6b86217 100644 (file)
--- a/drivers/net/ethernet/freescale/ucc_geth.h
+++ b/drivers/net/ethernet/freescale/ucc_geth.h
@@ -1165,9 +1165,7 @@ struct ucc_geth_private {
        struct ucc_geth_exf_global_pram __iomem *p_exf_glbl_param;
        u32 exf_glbl_param_offset;
        struct ucc_geth_rx_global_pram __iomem *p_rx_glbl_pram;
-       u32 rx_glbl_pram_offset;
        struct ucc_geth_tx_global_pram __iomem *p_tx_glbl_pram;
-       u32 tx_glbl_pram_offset;
        struct ucc_geth_send_queue_mem_region __iomem *p_send_q_mem_reg;
        u32 send_q_mem_reg_offset;
        struct ucc_geth_thread_data_tx __iomem *p_thread_data_tx;