1 files changed, 7 insertions, 0 deletions

diff --git a/drivers/net/stmmac/dwmac_lib.c b/drivers/net/stmmac/dwmac_lib.c
index d4adb1eaa447..0a504adb7eb3 100644
--- a/drivers/net/stmmac/dwmac_lib.c
+++ b/drivers/net/stmmac/dwmac_lib.c
@@ -227,6 +227,13 @@ int dwmac_dma_interrupt(unsigned long ioaddr,
         return ret;
 }
 
+void dwmac_dma_flush_tx_fifo(unsigned long ioaddr)
+{
+        u32 csr6 = readl(ioaddr + DMA_CONTROL);
+        writel((csr6 | DMA_CONTROL_FTF), ioaddr + DMA_CONTROL);
+
+        do {} while ((readl(ioaddr + DMA_CONTROL) & DMA_CONTROL_FTF));
+}
 
 void stmmac_set_mac_addr(unsigned long ioaddr, u8 addr[6],
                          unsigned int high, unsigned int low)