This makes the EHCI driver stop trying to update a live QH ... it's
not like OHCI, that can't be done safely because of a hardware race.
The fix:

    - Unlinks the QH before updating it; only the tail can safely be
      updated "live", not the queue head.  The async schedule (all
      control/bulk QHs) and periodic schedule (interrupt QH) work a
      bit differently ... high bandwidth transfers will hiccup.

    - Moves "update QH" and "clear toggle" logic into one new
      qh_refresh() routine, used in several places.

The race shows readily enough under load with the right hardware.
The controller silicon might be relatively slow, or maybe it's the
bus that's slow/busy:

	Host			Controller
	---			----------
				reads two TD pointers
	update two TD pointers
	wmb()
	activate QH
				reads rest of QH

Net result is that the HC treated old TD pointers as valid, and things
started misbehaving.  Busy controllers would misbehave worse; some systems
wouldn't notice more than a slowdown, especially with light USB loads.

This affects behavior in two cases.  The uncommon one is when an endpoint
gets an error and halts.  The more common one happens when the controller
runs off the end of its queue and overlays an inactive "dummy" TD into
the QH ... something the spec says shouldn't happen, but which more
silicon seems to be doing.  (Presumably to reduce DMA chatter.)
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>

This patch fixes two small problems in the port suspend/resume handling
for the UHCI driver.  There were a couple of spots where I neglected to
store I/O addresses in unsigned _long_ variables (required for 64-bit
architectures).  And it turns out the host controller will continue to
indicate a resume is in progress for a few microseconds after it has been
turned off, so an extra delay is needed.
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>

Fix (most of) x64-64 kernel build for CONFIG_PCI=n.  Fixes these 2 errors:

1. arch/x86_64/kernel/built-in.o(.text+0x8186): In function `quirk_intel_irqbalance':
: undefined reference to `raw_pci_ops'

Kconfig change:
2. arch/x86_64/kernel/pci-gart.c:194: error: `pci_bus_type' undeclared (first use in this function)

Still does not fix this one:
drivers/built-in.o(.text+0x3dcd8): In function `pnpacpi_allocated_resource':
: undefined reference to `pcibios_penalize_isa_irq'
Signed-off-by: Randy Dunlap <rddunlap@osdl.org>
Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>

Fixes faulty IRQ_NONE value returning by VM86 irq_handler().

The IRQ source is blocked as well until userspace confirms processing.
This should enable to use VM86 code even for level triggered interrupt
sources. 
Signed-off-by: Pavel Pisa <pisa@cmp.felk.cvut.cz>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

Signed-off-by: David S. Miller <davem@davemloft.net>

We were using 0x08000000 instead of TASK_UNMAPPED_BASE
so that running something like "/lib/ld-linux.so.2 emacs"
would work.

The issue there was that wherever /lib/ld-linux.so.2 gets
mapped (controlled by ELF_ET_DYN_BASE), that is where the
BSS start for the process ends up.  Now, emacs allocates
dynamic memory for LISP objects from the BSS, and needs
the top 4 bits of the virtual address to be clear so that
it can encode LISP type and GC marking information there.

But making this obscure emacs case work breaks lots of other
stuff.  For example, programs with a reasonably large data
section fail to load via direct ld.so interpreter execution
because the data section is large enough to begin overlapping
with the ELF_ET_DYN_BASE area.

The /lib/ld-linux.so.2 emacs case does not work on a lot of
platforms due to this issue, including i386, so it is not
worth making work on sparc either.  It is indeed useful
sometimes when debugging a new experimental build of glibc
for example, but people doing that can hack the value of
ELF_ET_DYN_BASE in their kernels.  Perhaps at some point
we will make a sysctl controllable value.
Signed-off-by: David S. Miller <davem@davemloft.net>

We forget to check the BRK condition in
the interrupt status register when deciding
to call receive_chars() or not, which is where
BRK handling occurs.
Signed-off-by: David S. Miller <davem@davemloft.net>

Signed-off-by: David S. Miller <davem@davemloft.net>

Noticed by Bob Breuer.
Signed-off-by: David S. Miller <davem@davemloft.net>

Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>

Signed-off-by: David S. Miller <davem@davemloft.net>

Noticed by Georgi Guninski.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>

If the user makes ip_cmsg_send call ip_options_get
multiple times, we leak kmalloced IP options data.

Noticed by Georgi Guninski.
Signed-off-by: David S. Miller <davem@davemloft.net>

Signed-off-by: Hideaki YOSHIFUJI <yoshfuji@linux-ipv6.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

Fix an oops in sched_domain_debug when using the isolcpus= option.

Also move a debug check for validating groups into the "for-each-group"
loop, where it should be.
Signed-off-by: Nick Piggin <nickpiggin@yahoo.com.au>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

The real bug was in the debugging code, not the actual domain data
structure setup.

Cset exclude: sivanich@sgi.com[torvalds]|ChangeSet|20041207160443|30564

into ppc970.osdl.org:/home/torvalds/v2.6/linux

The problem is in tcf_action_copy_stats, it assumes a->priv has
the same layout as struct tcf_act_hdr, which is not true for
struct tcf_police. This patch rearranges struct tcf_police to
match tcf_act_hdr.
Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>

Signed-off-by: Mitchell Blank Jr <mitch@sfgoth.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

into nuts.davemloft.net:/disk1/BK/sparc-2.6

into ppc970.osdl.org:/home/torvalds/v2.6/linux

I have some code (in sginfo) that requests the first 4 bytes
of SCSI INQUIRY VPD pages to get their length then asks for
that exact length in a follow up request to fetch the payload.
Just like I saw with 36 byte standard INQUIRYs (no fixed)
I get a buffer  full or zeroes.

BTW SCSI standards dictate that in situations where the allocation
length (in the cdb) is less than what is needed that what can be
sent shall be sent (i.e. truncated and without any error indication
or modification to the part of the response returned).
In other words it is up the the application client to take remedial
action.

Changelog:
   - fix off-by-1 allocation length issue with SCSI
     INQUIRY VPD pages 0x80 and 0x83
Signed-off-by: Jeff Garzik <jgarzik@pobox.com>

libata made the assumption that (for PIO commands in this case)
it could modify DMA memory at the kernel-virtual address, after
mapping this.  This is incorrect, and fails on e.g. platforms that
copy DMA memory back and forth (swiotlb on Intel EM64T and IA64).

Remove this assumption by ensuring that we only call the DMA mapping
routines if we really are going to use DMA for data xfer.

Also:  remove a bogus WARN_ON() in ata_sg_init_one() which caused
bug reports (but no problems).

They turn out to be buggy, and result in the same filename being
reported twice when htree directory indexing is enabled.

Thanks for Kris Karas for helping chase it down. Also reported
by Holger Kiehl.

Cset exclude: akpm@osdl.org[torvalds]|ChangeSet|20041108040801|49372

The new "simpler" opmode added by the recent merge from ivtv breaks msp3400
support for other tv cards.  Not figured yet why.

This patch disables the "simpler" mode by default (can still be enabled by
insmod option) as quick fix for 2.6.10.
Signed-off-by: Gerd Knorr <kraxel@bytesex.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

- [DVB] dvb-ttpci, budget: updated to fix problems with some CAMs on KNC1
  cards

- [DVB] dvb-ttpci, budget: make needlessly global code static, whitespace
  and newline cleanups, thanks to Adrian Bunk <bunk@stusta.de>

- [DVB] dvb-ttpci, budget: follow frontend changes in driver

- [DVB] dvb-ttpci, budget: fix drivers to use new
  wait_for_debi_done(...,nobusywait) routine.
Signed-off-by: Michael Hunold <hunold@linuxtv.org>
Signed-off-by: Adrian Bunk <bunk@stusta.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

- [DVB] remove obsolete grundig_29504-401, grundig_29504-491, alps_tdlb7 and
  alps_tdmb7 frontend drivers

- [DVB] remove sp887x firmware file, it's unused thanks to firmware_class
Signed-off-by: Michael Hunold <hunold@linuxtv.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

- [DVB] dvb-core: follow Linux coding style, kill dvb_ksyms.c and move the
  EXPORT_SYMBOLs to the files where the functions are, thanks to Adrian Bunk
  <bunk@stusta.de>

- [DVB] dvb-core: #if 0'ing unused code, make needlessly global code static,
  whitespace and newline cleanups, thanks to Adrian Bunk <bunk@stusta.de>

- [DVB] dvb_ca_en50221.c: support for KNC1/Cinergy CI modules, fix
  segfaults, enhanced poll_slot_status to support non-IRQ interfaces, Fix
  module usage count problem

- [DVB] dvb-frontend.c: core changes to support the refactorized frontend
  drivers
Signed-off-by: Michael Hunold <hunold@linuxtv.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

- [DVB] dibusb: added remote control event handling, thanks to David
  Matthews.

- [DVB] dibusb: added support for special Artec devices (with AN2235 usb
  controller)

- [DVB] dibusb: enable several new devices (even the broken Artec T1)

- [DVB] dibusb: #if 0'ing unused code

- [DVB] dibusb: follow frontend changes
Signed-off-by: Michael Hunold <hunold@linuxtv.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

- [DVB] cinergyT2: update driver to exploit hardware capabilities
Signed-off-by: Michael Hunold <hunold@linuxtv.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

- [DVB] dvb-ttusb-dec, dvb-ttusb-budget, skystar2, bt878 + dvb-bt8xx: follow
  frontend changes in driver

- [DVB] DST isn't a real frontend, it's an interface to a frontend
  microcontroller, so move the hardware dependend stuff to the right place
Signed-off-by: Michael Hunold <hunold@linuxtv.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

- [DVB] saa7146_core.c, saa7146_video.c: MODULE_PARM -> module_param, added
  non-busy waiting option for saa7146_wait_for_debi_done(), make needlessly
  global code static and remove unused code (thanks to Adrian Bunk
  <bunk@stusta.de)

- [DVB] saa7146_core.c: dev is kmalloc'ed twice, add missing
  pci_disable_device(), rename goto labels, propagate the error code from the
  underlying layers when possible, pci_request_region replaces
  request_mem_region, other minor cleanups (thanks to Francois Romieu)

- [DVB] saa7146_fops.c, saa7146_i2c.c, saa7146_hlp.c, saa7146_vbi.c: make
  needlessly global code static, remove unused code (thanks to Adrian Bunk
  <bunk@stusta.de>)
Signed-off-by: Michael Hunold <hunold@linuxtv.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

- [DVB] reafactor or add the following frontend drivers: at76c651, cx22700,
  ves1x93, ves1820, tda80xx, tda8083, cx22702, tda1004x, tda10021, cx24110,
  dvb_dummy_fe, l64781, mt312, mt352, stv0299, sp887x, stv0297, nxt6000,
  sp8870

- [DVB] remove dib3000mb from frontends, it's handled by the hw dependent
  driver now
Signed-off-by: Michael Hunold <hunold@linuxtv.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

- [DVB] get_dvb_firmware: rework to reflect new frontend design, added
  additional firmware location

- [DVB] Kconfig and Makefile changes all over the place, remove Makefile.lib
Signed-off-by: Michael Hunold <hunold@linuxtv.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

Start of a big DVB update.


The reasons for revamping the DVB frontend architecture:

Just as analog TV cards, DVB cards need some sort of tuner to tune to the
desired frequency of the digital transponder.  Tuning alone doesn't give you a
digital DVB datastream, however, you need a demodulator as well.  The
combination of tuner and demodulator is called frontend in the DVB world.
Tuner and demodulator are both accessed via the serial i2c bus on all DVB
cards out there.  So, technically a frontend consists of two i2c helper
chipsets.

In former times when there was only a handful of different DVB cards, the
frontend was encapsulated in one tin box.  Some people had the idea that there
should be one "frontend driver" instead of dedicated tuner and demodulator
drivers.  A bad idea.

As time went on, different manufacturers used the same tuner and demodulator
combination, but used a different wiring for the tuner or did other technical
changes.  The only possibility to support different cards with one combined
frontend driver was to add hardware dependent tuner code inside the generic
i2c frontend drivers.  Yuck.

So there was a need for communication between the i2c frontend driver and the
hardware depenedent driver, for example to exchange initialization code for
the tuner.  Unfortunately, the i2c infrastructure is one way, from the i2c
client to the i2c adapter using a non-typesafe ioctl() like interface, which
is ugly by itself.  Greg K-H and others refused the idea to add an iotctl()
like interface from the i2c adapter to the i2c client and instead proposed to
use a typesafe interface instead.  We all agreed with that.

The existing i2c infrastructure heavily depends on the probing facility, ie.
clients probe for their existence on i2c busses.  This is dumb for most i2c
busses out there that sit on dedicated hardware.  A DVB card is uniquely
identified with pci or usb subvendor and subsystem ids, so on that particular
bus we exactly *know* which kinds of i2c helper chipsets sit on there.

Up to now this wasn't a problem, because we could fix all conflicts manually
until half a year ago.  By that date, we found two different DVB designs which
used different demodulators that unfortunately use the same i2c address and
which cannot be distinguished by hardware tricks (ie.  different number of
registers, some fixed hw dependent register,...)

Getting a usable DVB card depended on the load order of the modules, because
the i2c core probed the demodulator drivers one after another and the first
one won the race.  Compiling all drivers statically into the kernel resulted
in non-working cards.

Our solution is as follows: we agreed to keep the basic underlying kernel i2c
infrastructure, but we decided not to register our bussed and chipsets to the
kernel i2c "probing" infrastructure.  Instead, we killed the tuner parts of
the frontend drivers and put them into the dedicated hardware drivers (this is
were they technically belong, they are highly hardware dependent) and we
changed the frontend drivers to pure demodulator drivers (which are hardware
independend).  There is now a type-safe functional dependency between the
drivers and the demodulator drivers, the drivers explicitely ask the
demodulator drivers to attach to their i2c bus.  The only negative aspect of
that approach is that for some hardware there are now more dependencies to
demodulator drivers than needed, ie.  a small amount of memory is wasted.

This patch:

- [DVB] cards.txt: added the USB devices to the card-list
- [DVB] README.dibusb: follow changes in dibusb-driver
Signed-off-by: Michael Hunold <hunold@linuxtv.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

Heh. usually these come through Andrew, but this time it was all me.

Noted by BenH.

Cset exclude: paulus@samba.org[torvalds]|ChangeSet|20041207181541|44524

In 2.6.8 the code for the BLKRRPART ioctl was changed
to return EIO when no partitions were found, such as
on an empty disk. This breaks some partitioning programs
and is also confusing: "Input/Output error" while in fact
nothing was wrong with this brand new all blank disk.

This restores old behaviour.

Self explanatory.. Based on a report on l/k
Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

We recently found a problem that was causing memory corruption during
boot on IBM POWER5 machines.  The problem was that the if you have a
USB keyboard and it is set to the input device for the firmware, it
will still be active when the kernel is started.  That means that the
OHCI controller has pointers to various memory areas that it polls for
transfers to do.  When we start using that same memory in the kernel,
bad things can happen.  (This isn't a problem on powermacs because the
Apple OF implements a "quiesce" call which turns off all the devices
it is using.)

This patch fixes the problem by calling the Open Firmware "close"
method for the input device.  Stephen Rothwell and I have verified
that doing this fixes the problem on the POWER5 machine where we
observed it.  I verified that this patch doesn't cause any problems on
powermacs.

I think this patch should go into 2.6.10 since it fixes a nasty memory
corruption bug that can cause rather subtle and hard-to-diagnose
problems during boot.  (The symptom on the POWER5 machine with the
particular kernel that we were using was that reading /proc/net/tcp
would oops, due to one of the pointers in tcp_ehash being corrupted.)
Signed-off-by: Paul Mackerras <paulus@samba.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

alloc_dma_rcv_ctx is called in interrupt and Kernel Spinlock debugging code
cribs about it via "Debug: sleeping function called in interrupt context". 
See sample stack traces below.

The patch below corrects ohci1394.c to use GFP_ATOMIC instead of
GFP_KERNEL.  Tested to work fine with 2 different Camcorder devices for
fairly long periods and connect/disconnects.
Signed-off-by: Parag Warudkar <kernel-stuff@comcast.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>