net: systemport: Use correct I/O accessors

The SYSTEMPORT driver currently uses __raw_{read,write}l which means
native I/O endian. This works correctly for an ARM LE kernel (default)
but fails miserably on an ARM BE (BE8) kernel where registers are kept
little endian, so replace uses with {read,write}l_relaxed here which is
what we want because this is all performance sensitive code.

Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/ethernet/broadcom/bcmsysport.c b/drivers/net/ethernet/broadcom/bcmsysport.c
index b3a2141..a7e8429 100644 (file)
--- a/drivers/net/ethernet/broadcom/bcmsysport.c
+++ b/drivers/net/ethernet/broadcom/bcmsysport.c
@@ -32,13 +32,13 @@
 #define BCM_SYSPORT_IO_MACRO(name, offset) \
 static inline u32 name##_readl(struct bcm_sysport_priv *priv, u32 off) \
 {                                                                      \
-       u32 reg = __raw_readl(priv->base + offset + off);               \
+       u32 reg = readl_relaxed(priv->base + offset + off);             \
        return reg;                                                     \
 }                                                                      \
 static inline void name##_writel(struct bcm_sysport_priv *priv,                \
                                  u32 val, u32 off)                     \
 {                                                                      \
-       __raw_writel(val, priv->base + offset + off);                   \
+       writel_relaxed(val, priv->base + offset + off);                 \
 }                                                                      \
 
 BCM_SYSPORT_IO_MACRO(intrl2_0, SYS_PORT_INTRL2_0_OFFSET);
@@ -59,14 +59,14 @@ static inline u32 rdma_readl(struct bcm_sysport_priv *priv, u32 off)
 {
        if (priv->is_lite && off >= RDMA_STATUS)
                off += 4;
-       return __raw_readl(priv->base + SYS_PORT_RDMA_OFFSET + off);
+       return readl_relaxed(priv->base + SYS_PORT_RDMA_OFFSET + off);
 }
 
 static inline void rdma_writel(struct bcm_sysport_priv *priv, u32 val, u32 off)
 {
        if (priv->is_lite && off >= RDMA_STATUS)
                off += 4;
-       __raw_writel(val, priv->base + SYS_PORT_RDMA_OFFSET + off);
+       writel_relaxed(val, priv->base + SYS_PORT_RDMA_OFFSET + off);
 }
 
 static inline u32 tdma_control_bit(struct bcm_sysport_priv *priv, u32 bit)
@@ -110,10 +110,10 @@ static inline void dma_desc_set_addr(struct bcm_sysport_priv *priv,
                                     dma_addr_t addr)
 {
 #ifdef CONFIG_PHYS_ADDR_T_64BIT
-       __raw_writel(upper_32_bits(addr) & DESC_ADDR_HI_MASK,
+       writel_relaxed(upper_32_bits(addr) & DESC_ADDR_HI_MASK,
                     d + DESC_ADDR_HI_STATUS_LEN);
 #endif
-       __raw_writel(lower_32_bits(addr), d + DESC_ADDR_LO);
+       writel_relaxed(lower_32_bits(addr), d + DESC_ADDR_LO);
 }
 
 static inline void tdma_port_write_desc_addr(struct bcm_sysport_priv *priv,