1 files changed, 11 insertions, 0 deletions

diff --git a/drivers/net/r8169.c b/drivers/net/r8169.c
index 217e709bda3e..96b6cfbf0a3a 100644
--- a/drivers/net/r8169.c
+++ b/drivers/net/r8169.c
@@ -559,6 +559,11 @@ static void mdio_write(void __iomem *ioaddr, int reg_addr, int value)
                         break;
                 udelay(25);
         }
+        /*
+         * According to hardware specs a 20us delay is required after write
+         * complete indication, but before sending next command.
+         */
+        udelay(20);
 }
 
 static int mdio_read(void __iomem *ioaddr, int reg_addr)
@@ -578,6 +583,12 @@ static int mdio_read(void __iomem *ioaddr, int reg_addr)
                 }
                 udelay(25);
         }
+        /*
+         * According to hardware specs a 20us delay is required after read
+         * complete indication, but before sending next command.
+         */
+        udelay(20);
+
         return value;
 }