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Florian Fainelli 4f8d9f3ce0 r6040: add delays in MDIO read/write polling loops 
On newer and faster machines (Vortex X86DX) using the r6040 driver, it
was noticed that the driver was returning an error during probing traced
down to being the MDIO bus probing and the inability to complete a MDIO
read operation in time. It turns out that the MDIO operations on these
faster machines usually complete after ~2140 iterations which is bigger
than 2048 (MAC_DEF_TIMEOUT) and results in spurious timeouts depending
on the system load.

Update r6040_phy_read() and r6040_phy_write() to include a 1
micro second delay in each busy-looping iteration of the loop which is a
much safer operation than incrementing MAC_DEF_TIMEOUT.

Reported-by: Nils Koehler <nils.koehler@ibt-interfaces.de>
Reported-by: Daniel Goertzen <daniel.goertzen@gmail.com>
Signed-off-by: Florian Fainelli <florian@openwrt.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
 		2014-01-16 16:22:54 -08:00
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appletalk
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arcnet drivers/net: delete non-required instances of include <linux/init.h> 2014-01-16 11:53:26 -08:00
bonding bonding: use __dev_get_by_name instead of dev_get_by_name to find interface 2014-01-14 18:50:46 -08:00
caif drivers/net: delete non-required instances of include <linux/init.h> 2014-01-16 11:53:26 -08:00
can drivers/net: delete non-required instances of include <linux/init.h> 2014-01-16 11:53:26 -08:00
cris
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dsa
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ethernet r6040: add delays in MDIO read/write polling loops 2014-01-16 16:22:54 -08:00
fddi drivers/net: delete non-required instances of include <linux/init.h> 2014-01-16 11:53:26 -08:00
hamradio Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2014-01-06 17:37:45 -05:00
hippi drivers/net: delete non-required instances of include <linux/init.h> 2014-01-16 11:53:26 -08:00
hyperv Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2014-01-06 17:37:45 -05:00
ieee802154 net: ieee802154: remove unnecessary spi_set_drvdata() 2013-12-10 22:31:32 -05:00
irda drivers/net: delete non-required instances of include <linux/init.h> 2014-01-16 11:53:26 -08:00
phy drivers/net: delete non-required instances of include <linux/init.h> 2014-01-16 11:53:26 -08:00
plip net: plip: slight optimization of addr compare 2013-12-31 16:48:33 -05:00
ppp ppp: slight optimization of addr compare 2013-12-26 13:31:33 -05:00
slip slip/slcan: added locking in wakeup function 2013-09-20 15:38:26 -04:00
team net: core: explicitly select a txq before doing l2 forwarding 2014-01-10 13:23:08 -05:00
usb drivers/net: delete non-required instances of include <linux/init.h> 2014-01-16 11:53:26 -08:00
vmxnet3 drivers/net: delete non-required instances of include <linux/init.h> 2014-01-16 11:53:26 -08:00
wan drivers/net: delete non-required instances of include <linux/init.h> 2014-01-16 11:53:26 -08:00
wimax wimax: Remove extern from function prototypes 2013-09-24 16:46:22 -07:00
wireless Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2014-01-14 14:42:42 -08:00
xen-netback xen-netback: use new skb_checksum_setup function 2014-01-14 14:24:19 -08:00
Kconfig
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LICENSE.SRC
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Makefile
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Space.c drivers: net: Include new header file in sbni.c 2013-12-19 18:51:20 -05:00
dummy.c net: Explicitly initialize u64_stats_sync structures for lockdep 2013-11-06 12:40:25 +01:00
eql.c eql: use __dev_get_by_name instead of dev_get_by_name to find interface 2014-01-14 18:50:46 -08:00
ifb.c net: Explicitly initialize u64_stats_sync structures for lockdep 2013-11-06 12:40:25 +01:00
loopback.c drivers/net: delete non-required instances of include <linux/init.h> 2014-01-16 11:53:26 -08:00
macvlan.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2014-01-14 14:42:42 -08:00
macvtap.c drivers/net: delete non-required instances of include <linux/init.h> 2014-01-16 11:53:26 -08:00
mdio.c mdio: unused ethtool functions 2013-12-26 13:29:35 -05:00
mii.c
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netconsole.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2013-11-04 13:48:30 -05:00
nlmon.c net: Explicitly initialize u64_stats_sync structures for lockdep 2013-11-06 12:40:25 +01:00
ntb_netdev.c
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rionet.c
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sb1000.c
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sungem_phy.c
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tun.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2014-01-14 14:42:42 -08:00
veth.c Merge branch 'core-locking-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2013-11-14 16:30:30 +09:00
virtio_net.c Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2014-01-06 17:37:45 -05:00
vxlan.c net: vxlan: properly cleanup devs on module unload 2014-01-14 23:38:39 -08:00
xen-netfront.c xen-netfront: add support for IPv6 offloads 2014-01-16 16:22:54 -08:00