Add a finite state machine helper module, which is basically copied over
from the hisax driver with a little bit of beautification.

Eventually, all ISDN should be converted to using these routines.

No code change, just move the call control state machine from
isdn_net.c to isdn_net_lib.c

Additionally, a little further cleanup, use the same timer
for incoming call timeout no matter if D- or B-channel connect
times out.

Simplify idle hang-up code.

For some unknown reason, isdn_net kept two pointers back from the channel
to the associated isdn_net_dev, one is enough, though.

Since we use the dial timer only during setup and the idle timer
only when the connection is active, we can simply (and cleanly) use
the same timer.

No code change, just splitting different states into separate functions.

->slave and ->master have been superseded, remove remaining traces.

Add a new file isdn_net_lib.c, where code which is shared among different
kind of network interface will gradually migrate to.

For now, move the ioctl config code out of isdn_{common,net}.c there,
and the basic register_netdev() + associated methods.

One goal is now achieved: Different types of ISDN net devices now have
a struct ops which describes them, so we don't have a mess of
if (lp->p_encap == <whatever>) everywhere, but things even nicely
split into

isdn_net.c: Common stuff and ethernet, raw-ip, and similar
isdn_ciscohdlck.c: Cisco HDLC + keepalive
isdn_ppp.c: Sync PPP

where common code to be used library-like is provided by isdn_net.c

Really use three different functions, which can call back into
library-type functions (isdn_net_autodial) as needed.

Now that the generic eth_type_trans() has changed in a way that
it works for dev->hard_header_size != ETH_HLEN, use it for
ethernet-over-ISDN instead of the private copy.

Also, kill the pointless isdn_net_adjust_hdr() function.

This a big patch, which now mostly finishes the separation work
of isdn_net_dev, isdn_net_local and struct net_device.
The latter two are allocated per network-layer known network interface,
while isdn_net_dev is the entity which is accessed using isdnctrl,
i.e. a per-channel thing.

Since we allow for channel bundling, isdn_net_local, the priv data of
an ISDN network interface, gets a list of isdn_net_dev's which can be
used for transfering data on that interface.

Cleaner and less error-prone than the open coded doubly linked
list.

Use a tasklet for pushing supervisory frames down the ISDN line and
schedule_task() for flipping ttyI's buffers.

into tp1.ruhr-uni-bochum.de:/home/kai/kernel/v2.5/linux-2.5.isdn

There is a one-to-one relation between struct net_device and
isdn_net_local, so reflect that in the declaration. There is
one list of active channels per network interface, so put
the list head into isdn_net_local, the list members are isdn_net_dev's.

into home.transmeta.com:/home/torvalds/v2.5/linux

into mulgrave.(none):/home/jejb/BK/scsi-for-linus-2.5

Hi!

Since the introduction of USER_HZ the SG_[GS]ET_TIMEOUT ioctls may have
a serious BUG as userspace uses a different HZ from the HZ in kernelspace.

In x86 HZ=1000 and USER_HZ=100, resulting in confusing timouts as the
kernel measures time 10 times as fast as userspace.

This patch is an attempt to fix this by transforming USER_HZ based timing to
HZ based timing before storing it in timeout. To make sure that SG_GET_TIMEOUT
and SG_SET_TIMEOUT behave consistently a field timeout_user is added which
stores the exact value that's passed by SG_SET_TIMEOUT and it's returned on
SG_GET_TIMEOUT.

Rolf Fokkens
fokkensr@fokkensr.vertis.nl

P.S. this is the second post of this patch

But it's called from scsi_add_lun()->scsi_alloc_sdev() before the type
is known.  The type is -1 all the time in scsi_initialise_merge_fn()
and scsi always bounces.

This patch makes it do the right thing - just enable block-highmem for
all scsi devices.

Jens had this to say:

"I guess that block-highmem has been around long enough, that I can
 use the term 'historically' at least in the kernel sense :-)

 This extra check was added for IDE because each device type driver
 (ide-disk, ide-cd, etc) needed to be updated to not assume virtual
 mappings of request data was valid.  I only did that for ide-disk,
 since this is the only one where bounce buffering really hurt
 performance wise.  So while ide-cd and ide-tape etc could have been
 updated, I deemed it uninteresting and not worthwhile.

 Now, this was just carried straight into the scsi counter parts,
 conveniently, because of laziness.  A quick glance at sr shows that it
 too can aviod bouncing easily (no changes needed).  st may need some
 changes, though.  So again, for scsi it was a matter of not impacting
 existing code in 2.4 too much.

 So TYPE_DISK check can be killed in 2.5 if someone does the work of
 checking that it is safe.  I'm not so sure it will make eg your SCSI
 CD-ROM that much faster :-)"

This removes an unused label in fs/devfs/base.c

into kroah.com:/home/greg/linux/BK/gregkh-2.5

It needs s/malloc.h/slab.h/ .
It also forgets to free some memory on an error exit patch.
Patch for 2.5.39 follows.

Here are the scatterlist primitives there's been mail about before.
Now the code has passed basic sanity testing, and is ready to merge
into Linus' tree to start getting wider use.  Greg, please merge!

To recap, the routines are a utility layer packaging several usb
core facilities to improve system performance.  It's synchronous.
The code uses functionality that drivers could use already, but
generally haven't:

    - Request queueing.  This is a big performance win.  It lets
      device drivers help the hcds avoid wasted i/o bandwidth, by
      eliminating irq and scheduling latencies between requests.  It
      can make a huge difference at high speed, when the latencies
      often exceed the time to handle each i/o request!

    - The new usb_map_sg() primitives, leveraging IOMMU hardware
      if it's there (better than entry-at-a-time mapping).

    - URB_NO_INTERRUPT transfer flag, a hint to hcds that they
      can avoid a 'success irq' for this urb.  Only the urb for
      the last scatterlist entry really needs an IRQ, the others
      can be eliminated or delayed.  (OHCI uses this today, and
      any HCD can safely ignore it.)

The particular functionality in these APIs seemed to meet Matt's
requirements for usb-storage, so I'd hope the 2.5 usb-storage
code will start to use these routines in a while.  (And maybe
those two scanner drivers: hpusbscsi, microtek.)

Brief summary of testing:  this code seems correct for normal
reads and writes, but the fault paths (including cancelation)
haven't been tested yet.  Both EHCI and OHCI seem to be mostly
OK with these more aggressive queued loads, but may need small
updates (like the two I sent yesterday).  Unfortunately I have
to report that UHCI and urb queueing will sometimes lock up my
hardware (PIIX4), so while we're lots better than 2.4 this is
still a bit of a trouble spot for now.

I'll be making some testing software available shortly, which
will help track down remaining HCD level problems by giving the
queuing APIs (and some others!) a more strenuous workout than
most drivers will, in their day-to-day usage.

- Dave

Greg, attached is a patch designed for diagnostic purposes.  Please apply
to the 2.5 tree -- yes, we'll be removing this at some point in the future.

It appears that we have a problem clearing halts.  This patch causes a very
clear message to be printed whenever a usb_stor_clear_halt() manages to
work.  So far, I haven't seen such a thing happen.  And I've seen _lots_ of
STALL conditions.

This problem has likely been around for a while... however, it hasn't been
noticed before because usb-storage was difficult to use because of other
bugs.  Heck, the most recent 'bk pull' is the first one for me in _months_
which let me boot all the way into X11.

I'm going to hold my patch queue until this is resolved.  On my test setup,
it's easy to see this failing.  I've tried with 4 different devices, with
both UHCI and EHCI drivers.  I don't want to confuse this problem with
other patches...

'result' in this function always seems to be -32.  Which is odd, because
control endpoints shouldn't do that.

I'm open to suggestions as to where to look for this bug, but my instincts
are telling me that this is a core or HCD issue, not a usb-storage issue.

On a positive note, this means that the error-recovery system gets a good
workout.

into penguin.transmeta.com:/home/penguin/torvalds/repositories/kernel/linux

into flint.arm.linux.org.uk:/usr/src/linux-bk-2.5/linux-2.5-rmk

This corrects spelling mistakes, adds missed configuration for
cpufreq, corrects free_irq comment, etc.

Add "IRQ_" prefix to these sa1111 irq numbers.

We must clear down all currently pending IRQs before servicing any
IRQ on the chip.  This prevents immediate recursion into the
interrupt handling paths when we service the first IRQ.

This cset updates sa1100 code for the now merged cpufreq next-gen.

Update sa1100fb for recent fbcon changes, and move stork LCD power
handling into machine specific file.

This didn't follow the LDM model correctly.  The SA1111 is always
a device on the root bus.