linux-toradex.git/drivers/usb/net, branch v2.6.19.2

[PATCH] asix: Fix typo for AX88772 PHY Selection

2007-01-10T19:05:23+00:00

The attached patch fixes a PHY selection problem that prevents AX88772
based devices (Linksys USB200Mv2, etc) devices from working.  The
interface comes up and everything seems fine except the device doesn't
send/receive any packets.  The one-liner attached fixes this issue and
makes the devices usable again.

Signed-off-by: David Hollis 
Signed-off-by: Chris Wright

USB: use MII hooks only if CONFIG_MII is enabled

2006-11-03T19:57:19+00:00

Fix mcs7830 patch

The recent mcs7830 update to make the MII support sharable goofed various
pre-existing configurations in two ways:

  - it made the usbnet infrastructure reference MII symbols even
    when they're not needed in the kernel being built

  - it didn't enable MII along with the mcs7830 minidriver

This patch fixes these two problems.

However, there does seem to be a Kconfig reverse dependency bug in that MII
gets wrongly enabled in some cases (like USBNET=y and USBNET_MII=n); I think
I've noticed that same problem in other situations too.  So the result can
mean kernels being bloated by stuff that's needlessly enabled ... better
than wrongly being disabled, but contributing to bloat.

Signed-off-by: David Brownell 
Signed-off-by: Greg Kroah-Hartman

[PATCH] lockdep: annotate DECLARE_WAIT_QUEUE_HEAD

2006-10-30T20:08:40+00:00

kernel: INFO: trying to register non-static key.
kernel: the code is fine but needs lockdep annotation.
kernel: turning off the locking correctness validator.
kernel:  [] show_trace_log_lvl+0x58/0x16a
kernel:  [] show_trace+0xd/0x10
kernel:  [] dump_stack+0x19/0x1b
kernel:  [] __lock_acquire+0xf0/0x90d
kernel:  [] lock_acquire+0x4b/0x6b
kernel:  [] _spin_lock_irqsave+0x22/0x32
kernel:  [] prepare_to_wait+0x17/0x4b
kernel:  [] lpfc_do_work+0xdd/0xcc2 [lpfc]
kernel:  [] kthread+0xc3/0xf2
kernel:  [] kernel_thread_helper+0x5/0xb

Another case of non-static lockdep keys; duplicate the paradigm set by
DECLARE_COMPLETION_ONSTACK and introduce DECLARE_WAIT_QUEUE_HEAD_ONSTACK.

Signed-off-by: Peter Zijlstra 
Cc: Greg KH 
Cc: Markus Lidel 
Acked-by: Ingo Molnar 
Cc: Arjan van de Ven 
Cc: James Bottomley 
Cc: Marcel Holtmann 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

usbnet: add a mutex around phy register access

2006-10-17T21:46:32+00:00

When working on the mcs7830, I noticed the need for a mutex in its
mdio_read/mdio_write functions. A related problem seems to be present
in the asix driver in the respective functions.

This introduces a mutex in the common usbnet driver and uses it
from the two hardware specific drivers.

Acked-by: David Hollis 
Signed-off-by: Arnd Bergmann 
Signed-off-by: Greg Kroah-Hartman

usbnet: improve generic ethtool support

2006-10-17T21:46:32+00:00

This adds generic support for the ethtool commands get_settings,
set_settings, get_link and nway_reset to usbnet. These are now
implemented using mii functions when a low-level driver supports
mdio_read/mdio_write and does not override the usbnet ethtool
commands with its own.

Currently, this applies to the asix and the mcs7830 drivers.
I have tested it on mcs7830.

Signed-off-by: Arnd Bergmann 
Acked-by: David Hollis 
Signed-off-by: Greg Kroah-Hartman

USB: driver for mcs7830 (aka DeLOCK) USB ethernet adapter

2006-10-17T21:46:32+00:00

This driver adds support for the DeLOCK USB ethernet adapter
and potentially others based on the MosChip MCS7830 chip.

It is based on the usbnet and asix drivers as well as the
original device driver provided by MosChip, which in turn
was based on the usbnet driver.

It has been tested successfully on an OHCI, but interestingly
there seems to be a problem with the mcs7830 when connected to
the ICH6/EHCI in my thinkpad: it keeps receiving lots of
broken packets in the RX interrupt. The problem goes away when
I'm using an active USB hub, so I assume it's not related to
the device driver, but rather to the hardware.

Signed-off-by: David Brownell 
Signed-off-by: Arnd Bergmann 
Signed-off-by: Greg Kroah-Hartman

USB: drivers/usb/net/*: use BUILD_BUG_ON

2006-10-17T21:46:32+00:00

Signed-off-by: Alexey Dobriyan 
Signed-off-by: Greg Kroah-Hartman

USB: suspend/resume support for kaweth

2006-10-17T21:46:30+00:00

this adds support for suspend and resume to the kaweth driver.

Signed-off-by: Oliver Neukum 
Signed-off-by: Greg Kroah-Hartman

USB: remove private debug macros from kaweth

2006-10-17T21:46:30+00:00

this kills the private debug macros from the kaweth driver.

Signed-off-by: Oliver Neukum 
Signed-off-by: Greg Kroah-Hartman

IRQ: Maintain regs pointer globally rather than passing to IRQ handlers

2006-10-05T14:10:12+00:00

Maintain a per-CPU global "struct pt_regs *" variable which can be used instead
of passing regs around manually through all ~1800 interrupt handlers in the
Linux kernel.

The regs pointer is used in few places, but it potentially costs both stack
space and code to pass it around.  On the FRV arch, removing the regs parameter
from all the genirq function results in a 20% speed up of the IRQ exit path
(ie: from leaving timer_interrupt() to leaving do_IRQ()).

Where appropriate, an arch may override the generic storage facility and do
something different with the variable.  On FRV, for instance, the address is
maintained in GR28 at all times inside the kernel as part of general exception
handling.

Having looked over the code, it appears that the parameter may be handed down
through up to twenty or so layers of functions.  Consider a USB character
device attached to a USB hub, attached to a USB controller that posts its
interrupts through a cascaded auxiliary interrupt controller.  A character
device driver may want to pass regs to the sysrq handler through the input
layer which adds another few layers of parameter passing.

I've build this code with allyesconfig for x86_64 and i386.  I've runtested the
main part of the code on FRV and i386, though I can't test most of the drivers.
I've also done partial conversion for powerpc and MIPS - these at least compile
with minimal configurations.

This will affect all archs.  Mostly the changes should be relatively easy.
Take do_IRQ(), store the regs pointer at the beginning, saving the old one:

	struct pt_regs *old_regs = set_irq_regs(regs);

And put the old one back at the end:

	set_irq_regs(old_regs);

Don't pass regs through to generic_handle_irq() or __do_IRQ().

In timer_interrupt(), this sort of change will be necessary:

	-	update_process_times(user_mode(regs));
	-	profile_tick(CPU_PROFILING, regs);
	+	update_process_times(user_mode(get_irq_regs()));
	+	profile_tick(CPU_PROFILING);

I'd like to move update_process_times()'s use of get_irq_regs() into itself,
except that i386, alone of the archs, uses something other than user_mode().

Some notes on the interrupt handling in the drivers:

 (*) input_dev() is now gone entirely.  The regs pointer is no longer stored in
     the input_dev struct.

 (*) finish_unlinks() in drivers/usb/host/ohci-q.c needs checking.  It does
     something different depending on whether it's been supplied with a regs
     pointer or not.

 (*) Various IRQ handler function pointers have been moved to type
     irq_handler_t.

Signed-Off-By: David Howells 
(cherry picked from 1b16e7ac850969f38b375e511e3fa2f474a33867 commit)