stmmac: Fix kernel crashes for jumbo frames

[cascardo/linux.git] / drivers / net / ethernet / stmicro / stmmac / dwmac1000_core.c

diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac1000_core.c b/drivers/net/ethernet/stmicro/stmmac/dwmac1000_core.c
index cdd9268..b3e148e 100644 (file)
--- a/drivers/net/ethernet/stmicro/stmmac/dwmac1000_core.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac1000_core.c
@@ -32,10 +32,15 @@
 #include <asm/io.h>
 #include "dwmac1000.h"
 
-static void dwmac1000_core_init(void __iomem *ioaddr)
+static void dwmac1000_core_init(void __iomem *ioaddr, int mtu)
 {
        u32 value = readl(ioaddr + GMAC_CONTROL);
        value |= GMAC_CORE_INIT;
+       if (mtu > 1500)
+               value |= GMAC_CONTROL_2K;
+       if (mtu > 2000)
+               value |= GMAC_CONTROL_JE;
+
        writel(value, ioaddr + GMAC_CONTROL);
 
        /* Mask GMAC interrupts */