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Diffstat (limited to 'drivers/net/r8169.c')
-rw-r--r--drivers/net/r8169.c12
1 files changed, 9 insertions, 3 deletions
diff --git a/drivers/net/r8169.c b/drivers/net/r8169.c
index 03a8318d90a2..96b6cfbf0a3a 100644
--- a/drivers/net/r8169.c
+++ b/drivers/net/r8169.c
@@ -560,10 +560,10 @@ static void mdio_write(void __iomem *ioaddr, int reg_addr, int value)
udelay(25);
}
/*
- * Some configurations require a small delay even after the write
- * completed indication or the next write might fail.
+ * According to hardware specs a 20us delay is required after write
+ * complete indication, but before sending next command.
*/
- udelay(25);
+ udelay(20);
}
static int mdio_read(void __iomem *ioaddr, int reg_addr)
@@ -583,6 +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;
}

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