diff options
Diffstat (limited to 'drivers/net/ethernet/stmicro/stmmac/dwmac4_lib.c')
| -rw-r--r-- | drivers/net/ethernet/stmicro/stmmac/dwmac4_lib.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac4_lib.c b/drivers/net/ethernet/stmicro/stmmac/dwmac4_lib.c index df41eac54058..03ceb6a94073 100644 --- a/drivers/net/ethernet/stmicro/stmmac/dwmac4_lib.c +++ b/drivers/net/ethernet/stmicro/stmmac/dwmac4_lib.c @@ -240,13 +240,15 @@ void stmmac_dwmac4_set_mac_addr(void __iomem *ioaddr, const u8 addr[6], void stmmac_dwmac4_set_mac(void __iomem *ioaddr, bool enable) { u32 value = readl(ioaddr + GMAC_CONFIG); + u32 old_val = value; if (enable) value |= GMAC_CONFIG_RE | GMAC_CONFIG_TE; else value &= ~(GMAC_CONFIG_TE | GMAC_CONFIG_RE); - writel(value, ioaddr + GMAC_CONFIG); + if (value != old_val) + writel(value, ioaddr + GMAC_CONFIG); } void stmmac_dwmac4_get_mac_addr(void __iomem *ioaddr, unsigned char *addr, |