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authorLinus Torvalds <torvalds@linux-foundation.org>2010-06-11 14:20:03 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2010-06-11 14:20:03 -0700
commit4cea8706c39023f5f721c88dd0ae17a097a39c98 (patch)
tree7eb589399dc10944cde2802d68adb5511405446f /drivers/net/r8169.c
parent7ae1277a5202109a31d8f81ac99d4a53278dab84 (diff)
parente79aa8671033535c2e9ffc0a68010ae49ed5734c (diff)
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6: wimax/i2400m: fix missing endian correction read in fw loader net8139: fix a race at the end of NAPI pktgen: Fix accuracy of inter-packet delay. pkt_sched: gen_estimator: add a new lock net: deliver skbs on inactive slaves to exact matches ipv6: fix ICMP6_MIB_OUTERRORS r8169: fix mdio_read and update mdio_write according to hw specs gianfar: Revive the driver for eTSEC devices (disable timestamping) caif: fix a couple range checks phylib: Add support for the LXT973 phy. net: Print num_rx_queues imbalance warning only when there are allocated queues
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;
}