diff options
Diffstat (limited to 'drivers/net/r8169.c')
| -rw-r--r-- | drivers/net/r8169.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/drivers/net/r8169.c b/drivers/net/r8169.c index 217e709bda3..96b6cfbf0a3 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; } |