stmmac: use of_property_read_u32 instead of read_u8

Numbers in DT are stored in “cells” which are 32-bits
in size. of_property_read_u8 does not work properly
because of endianness problem.

This causes it to always return 0 with little-endian
architectures.

Fix it by using of_property_read_u32() OF API.

Signed-off-by: Bhadram Varka <vbhadram@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c
index 6383695004a53ef14e6c72beba5b4f8b1677d5f5..195eb7e71473d318ef63332cbbdc98515f7af697 100644 (file)
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c
@@ -168,8 +168,8 @@ static void stmmac_mtl_setup(struct platform_device *pdev,
        }
 
        /* Processing RX queues common config */
-       if (of_property_read_u8(rx_node, "snps,rx-queues-to-use",
-                               &plat->rx_queues_to_use))
+       if (of_property_read_u32(rx_node, "snps,rx-queues-to-use",
+                                &plat->rx_queues_to_use))
                plat->rx_queues_to_use = 1;
 
        if (of_property_read_bool(rx_node, "snps,rx-sched-sp"))
@@ -191,8 +191,8 @@ static void stmmac_mtl_setup(struct platform_device *pdev,
                else
                        plat->rx_queues_cfg[queue].mode_to_use = MTL_QUEUE_DCB;
 
-               if (of_property_read_u8(q_node, "snps,map-to-dma-channel",
-                                       &plat->rx_queues_cfg[queue].chan))
+               if (of_property_read_u32(q_node, "snps,map-to-dma-channel",
+                                        &plat->rx_queues_cfg[queue].chan))
                        plat->rx_queues_cfg[queue].chan = queue;
                /* TODO: Dynamic mapping to be included in the future */
 
@@ -222,8 +222,8 @@ static void stmmac_mtl_setup(struct platform_device *pdev,
        }
 
        /* Processing TX queues common config */
-       if (of_property_read_u8(tx_node, "snps,tx-queues-to-use",
-                               &plat->tx_queues_to_use))
+       if (of_property_read_u32(tx_node, "snps,tx-queues-to-use",
+                                &plat->tx_queues_to_use))
                plat->tx_queues_to_use = 1;
 
        if (of_property_read_bool(tx_node, "snps,tx-sched-wrr"))
@@ -244,8 +244,8 @@ static void stmmac_mtl_setup(struct platform_device *pdev,
                if (queue >= plat->tx_queues_to_use)
                        break;
 
-               if (of_property_read_u8(q_node, "snps,weight",
-                                       &plat->tx_queues_cfg[queue].weight))
+               if (of_property_read_u32(q_node, "snps,weight",
+                                        &plat->tx_queues_cfg[queue].weight))
                        plat->tx_queues_cfg[queue].weight = 0x10 + queue;
 
                if (of_property_read_bool(q_node, "snps,dcb-algorithm")) {

diff --git a/include/linux/stmmac.h b/include/linux/stmmac.h
index 108739ff9223ba0ea5b29fe789ca877928c63e63..32feac5bbd75b69714f87e1178789c59a5dbd876 100644 (file)
--- a/include/linux/stmmac.h
+++ b/include/linux/stmmac.h
@@ -126,14 +126,14 @@ struct stmmac_axi {
 
 struct stmmac_rxq_cfg {
        u8 mode_to_use;
-       u8 chan;
+       u32 chan;
        u8 pkt_route;
        bool use_prio;
        u32 prio;
 };
 
 struct stmmac_txq_cfg {
-       u8 weight;
+       u32 weight;
        u8 mode_to_use;
        /* Credit Base Shaper parameters */
        u32 send_slope;
@@ -168,8 +168,8 @@ struct plat_stmmacenet_data {
        int unicast_filter_entries;
        int tx_fifo_size;
        int rx_fifo_size;
-       u8 rx_queues_to_use;
-       u8 tx_queues_to_use;
+       u32 rx_queues_to_use;
+       u32 tx_queues_to_use;
        u8 rx_sched_algorithm;
        u8 tx_sched_algorithm;
        struct stmmac_rxq_cfg rx_queues_cfg[MTL_MAX_RX_QUEUES];