linux-toradex.git/drivers/net/phy, branch tegra-10.11.4

phy/marvell: fix 88e1121 support

2010-12-09T21:32:19+00:00

commit be8c648051048bc66fbca590d00f3e8543ec32af upstream.

Commit c477d0447db08068a497e7beb892b2b2a7bff64b added support for RGMII
rx/tx delays except that it ends up clearing rx/tx delays bit for modes
differents that RGMII*ID. Due to this, ethernet is not working anymore
on my guruplug server +. This patch is fixing that.

Signed-off-by: Arnaud Patard 
Signed-off-by: David S. Miller 
Signed-off-by: Greg Kroah-Hartman

phylib: fix PAL state machine restart on resume

2010-09-14T21:31:03+00:00

On resume, before starting the PAL state machine, check if the
adjust_link() method is well supplied. If not, this would lead to a
NULL pointer dereference in the phy_state_machine() function.

This scenario can happen if the Ethernet driver call manually the PHY
functions instead of using the PAL state machine. The mv643xx_eth driver
is a such example.

Signed-off-by: Simon Guinot 
Signed-off-by: David S. Miller

Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6

2010-08-28T22:42:44+00:00

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6:
  net/ipv4: Eliminate kstrdup memory leak
  net/caif/cfrfml.c: use asm/unaligned.h
  ax25: missplaced sock_put(sk)
  qlge: reset the chip before freeing the buffers
  l2tp: test for ethernet header in l2tp_eth_dev_recv()
  tcp: select(writefds) don't hang up when a peer close connection
  tcp: fix three tcp sysctls tuning
  tcp: Combat per-cpu skew in orphan tests.
  pxa168_eth: silence gcc warnings
  pxa168_eth: update call to phy_mii_ioctl()
  pxa168_eth: fix error handling in prope
  pxa168_eth: remove unneeded null check
  phylib: Fix race between returning phydev and calling adjust_link
  caif-driver: add HAS_DMA dependency
  3c59x: Fix deadlock between boomerang_interrupt and boomerang_start_tx
  qlcnic: fix poll implementation
  netxen: fix poll implementation
  bridge: netfilter: fix a memory leak

phylib: Fix race between returning phydev and calling adjust_link

2010-08-24T21:46:12+00:00

It is possible that phylib will call adjust_link before returning
from {,of_}phy_connect(), which may cause the following [very rare,
though] oops upon reopening the device:

  Unable to handle kernel paging request for data at address 0x0000024c
  Oops: Kernel access of bad area, sig: 11 [#1]
  PREEMPT SMP NR_CPUS=2 LTT NESTING LEVEL : 0
  P1021 RDB
  Modules linked in:
  NIP: c0345dac LR: c0345dac CTR: c0345d84
  TASK = dffab6b0[30] 'events/0' THREAD: c0d24000 CPU: 0
  [...]
  NIP [c0345dac] adjust_link+0x28/0x19c
  LR [c0345dac] adjust_link+0x28/0x19c
  Call Trace:
  [c0d25f00] [000045e1] 0x45e1 (unreliable)
  [c0d25f30] [c036c158] phy_state_machine+0x3ac/0x554
  [...]

Here is why. Drivers store phydev in their private structures, e.g.
gianfar driver:

static int init_phy(struct net_device *dev)
{
	...
	priv->phydev = of_phy_connect(...);
	...
}

So that adjust_link could retrieve it back:

static void adjust_link(struct net_device *dev)
{
	...
	struct phy_device *phydev = priv->phydev;
	...
}

If the device has been opened before, then phydev->state is set to
PHY_HALTED (or undefined if the driver didn't call phy_stop()).

Now, phy_connect starts the PHY state machine before returning phydev to
the driver:

	phy_start_machine(phydev, NULL);

	if (phydev->irq > 0)
		phy_start_interrupts(phydev);

	return phydev;

The time between 'phy_start_machine()' and 'return phydev' is undefined.
The start machine routine delays execution for 1 second, which is enough
for most cases. But under heavy load, or if you're unlucky, it is quite
possible that PHY state machine will execute before phy_connect()
returns, and so adjust_link callback will try to dereference phydev,
which is not yet ready.

To fix the issue, simply initialize the PHY's state to PHY_READY during
phy_attach(). This will ensure that phylib won't call adjust_link before
phy_start().

Signed-off-by: Anton Vorontsov 
Signed-off-by: David S. Miller

Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6

2010-08-13T17:38:12+00:00

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6: (30 commits)
  ctcm: rename READ/WRITE defines to avoid redefinitions
  claw: rename READ/WRITE defines to avoid redefinitions
  phylib: available for any speed ethernet
  can: add limit for nframes and clean up signed/unsigned variables
  pkt_sched: Check .walk and .leaf class handlers
  pkt_sched: Fix sch_sfq vs tc_modify_qdisc oops
  caif-spi: Bugfix SPI_DATA_POS settings were inverted.
  caif: Bugfix - Increase default headroom size for control channel.
  net: make netpoll_rx return bool for !CONFIG_NETPOLL
  Bluetooth: Use 3-DH5 payload size for default ERTM max PDU size
  Bluetooth: Fix incorrect setting of remote_tx_win for L2CAP ERTM
  Bluetooth: Change default L2CAP ERTM retransmit timeout
  Bluetooth: Fix endianness issue with L2CAP MPS configuration
  net: Use NET_XMIT_SUCCESS where possible.
  isdn: mISDN: call pci_disable_device() if pci_probe() failed
  isdn: avm: call pci_disable_device() if pci_probe() failed
  isdn: avm: call pci_disable_device() if pci_probe() failed
  usbnet: rx_submit() should return an error code.
  pkt_sched: Add some basic qdisc class ops verification. Was: [PATCH] sfq: add dummy bind/unbind handles
  pkt_sched: sch_sfq: Add dummy unbind_tcf and put handles. Was: [PATCH] sfq: add dummy bind/unbind handles
  ...

phylib: available for any speed ethernet

2010-08-12T06:03:50+00:00

Several gigabit network drivers (SB1250_MAC, TIGON3, FSL, GIANFAR,
UCC_GETH, MV643XX_ETH, XILINX_LL_TEMAC, S6GMAC, STMMAC_ETH, PASEMI_MAC,
and OCTEON_ETHERNET) select PHYLIB.  These drivers are not under
NET_ETHERNET (10/100 mbit), so this warning is generated (long, irrelevant
parts are omitted):

warning: (NET_DSA && NET && EXPERIMENTAL && NET_ETHERNET && !S390 || ... || SB1250_MAC && NETDEVICES && NETDEV_1000 && SIBYTE_SB1xxx_SOC || TIGON3 && NETDEVICES && NETDEV_1000 && PCI || FSL_PQ_MDIO && NETDEVICES && NETDEV_1000 && FSL_SOC || GIANFAR && NETDEVICES && NETDEV_1000 && FSL_SOC || UCC_GETH && NETDEVICES && NETDEV_1000 && QUICC_ENGINE || MV643XX_ETH && NETDEVICES && NETDEV_1000 && (MV64X60 || PPC32 || PLAT_ORION) || XILINX_LL_TEMAC && NETDEVICES && NETDEV_1000 && (PPC || MICROBLAZE) || S6GMAC && NETDEVICES && NETDEV_1000 && XTENSA_VARIANT_S6000 || STMMAC_ETH && NETDEV_1000 && NETDEVICES && CPU_SUBTYPE_ST40 || PASEMI_MAC && NETDEVICES && NETDEV_10000 && PPC_PASEMI && PCI || OCTEON_ETHERNET && STAGING && !STAGING_EXCLUDE_BUILD && CPU_CAVIUM_OCTEON) selects PHYLIB which has unmet direct dependencies (!S390 && NET_ETHERNET)

PHYLIB is used by non-10/100 mbit ethernet drivers, so change the dependencies
to be NETDEVICES instead of NET_ETHERNET.

Signed-off-by: Randy Dunlap 
Signed-off-by: David S. Miller

phy.c: fix kernel-doc warnings

2010-08-10T07:09:21+00:00

Fix phy.c kernel-doc notation:

Warning(drivers/net/phy/phy.c:313): No description found for parameter 'ifr'
Warning(drivers/net/phy/phy.c:313): Excess function parameter 'mii_data' description in 'phy_mii_ioctl'

Signed-off-by: Randy Dunlap 
Signed-off-by: David S. Miller

of/device: Replace struct of_device with struct platform_device

2010-08-06T15:25:50+00:00

of_device is just an alias for platform_device, so remove it entirely.  Also
replace to_of_device() with to_platform_device() and update comment blocks.

This patch was initially generated from the following semantic patch, and then
edited by hand to pick up the bits that coccinelle didn't catch.

@@
@@
-struct of_device
+struct platform_device

Signed-off-by: Grant Likely 
Reviewed-by: David S. Miller

Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next-2.6

2010-08-04T18:47:58+00:00

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next-2.6: (1443 commits)
  phy/marvell: add 88ec048 support
  igb: Program MDICNFG register prior to PHY init
  e1000e: correct MAC-PHY interconnect register offset for 82579
  hso: Add new product ID
  can: Add driver for esd CAN-USB/2 device
  l2tp: fix export of header file for userspace
  can-raw: Fix skb_orphan_try handling
  Revert "net: remove zap_completion_queue"
  net: cleanup inclusion
  phy/marvell: add 88e1121 interface mode support
  u32: negative offset fix
  net: Fix a typo from "dev" to "ndev"
  igb: Use irq_synchronize per vector when using MSI-X
  ixgbevf: fix null pointer dereference due to filter being set for VLAN 0
  e1000e: Fix irq_synchronize in MSI-X case
  e1000e: register pm_qos request on hardware activation
  ip_fragment: fix subtracting PPPOE_SES_HLEN from mtu twice
  net: Add getsockopt support for TCP thin-streams
  cxgb4: update driver version
  cxgb4: add new PCI IDs
  ...

Manually fix up conflicts in:
 - drivers/net/e1000e/netdev.c: due to pm_qos registration
   infrastructure changes
 - drivers/net/phy/marvell.c: conflict between adding 88ec048 support
   and cleaning up the IDs
 - drivers/net/wireless/ipw2x00/ipw2100.c: trivial ipw2100_pm_qos_req
   conflict (registration change vs marking it static)

phy/marvell: add 88ec048 support

2010-08-04T02:36:06+00:00

Marvell 88ec048 is a derivative of its 88e1121r device.  From the programmer's
perspective, the one major difference is the addition of an additional control
bit in Page 2 Register 16 - used to control the padding of odd nibble
preambles.

This patch adds support for this new device, while inheriting as much code as
possible from the existing 88e1121r implementation.

Signed-off-by: Cyril Chemparathy 
Signed-off-by: David S. Miller