This patch converts cpmac to the new Fixed PHY infrastructure, though it
doesn't fix all the problems with that driver. I didn't even bother to
test this patch to compile, because cpmac driver is broken in several ways:

1. This driver won't compile by itself because lack of its header describing
   platform data;
2. It assumes that fixed PHYs should be created by the ethernet driver.
   It is wrong assumption: fixed PHYs creation is platform code authority,
   driver must blindly accept bus_id and phy_id platform data variables
   instead.

Also, it seem that that driver doesn't have actual in-tree users, so
nothing to fix further.

The main purpose of that patch is to get rid of the following Kconfig
warning:

scripts/kconfig/conf -s arch/powerpc/Kconfig
drivers/net/Kconfig:1713:warning: 'select' used by config symbol
'CPMAC' refers to undefined symbol 'FIXED_MII_100_FDX'
Signed-off-by: NAnton Vorontsov <avorontsov@ru.mvista.com>
Signed-off-by: NKumar Gala <galak@kernel.crashing.org>

* use irq_handler_t where appropriate

* no need to use 'irq' function arg, its already stored in a data struct

* rename irq handler 'irq' argument to 'dummy', where the function
  has been analyzed and proven not to use its first argument.

* remove always-false "dev_id == NULL" test from irq handlers

* remove pointless casts from void*

* declance: irq argument is not const

* add KERN_xxx printk prefix

* fix minor whitespace weirdness
Signed-off-by: NJeff Garzik <jgarzik@redhat.com>

Please apply this patch since i reverted by mistake
the commit 4e3ab47a
in 6cd043d9Signed-off-by: NMatteo Croce <technoboy85@gmail.com>
Signed-off-by: NJeff Garzik <jeff@garzik.org>

Use fixed_mdio_get_phydev for obtaining fixed phy instances and adopt to
changed fixed phy device naming.
Signed-off-by: NEugene Konev <ejka@imfi.kspu.ru>
Signed-off-by: NJeff Garzik <jeff@garzik.org>

Convert cpmac to new napi_struct API introduced by
bea3348e [NET]: Make NAPI polling independent
of struct net_device objects.
Only disable rx interrupts if napi actually has been scheduled.
Signed-off-by: NEugene Konev <ejka@imfi.kspu.ru>
Signed-off-by: NJeff Garzik <jeff@garzik.org>

Switch to using DECLARE_MAC_BUF/print_mac() added by commit
0795af57 [NET]: Introduce and use print_mac()
and DECLARE_MAC_BUF().
Signed-off-by: NEugene Konev <ejka@imfi.kspu.ru>
Signed-off-by: NJeff Garzik <jeff@garzik.org>

Signed-off-by: NMatteo Croce <technoboy85@gmail.com>
Signed-off-by: NEugene Konev <ejka@imfi.kspu.ru>
Signed-off-by: NFelix Fietkau <nbd@openwrt.org>
Signed-off-by: NJeff Garzik <jeff@garzik.org>

Make the helper for getting the field, symmetrical to
the "set" one. Return 0 if CONFIG_NETDEVICES_MULTIQUEUE=n
Signed-off-by: NPavel Emelyanov <xemul@openvz.org>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

New version which uses less locking and drops old API
Signed-off-by: NMatteo Croce <technoboy85@gmail.com>
Signed-off-by: NEugene Konev <ejka@imfi.kspu.ru>
Signed-off-by: NFelix Fietkau <nbd@openwrt.org>
Signed-off-by: NJeff Garzik <jeff@garzik.org>