The biggest change is better overflow handling, partly ported from the AMD64 
IOMMU  code.  This is important for some 3d drivers who make use of this and can 
map a lot of memory.

First it increases the default memory usage of swiotlb to 64MB.
This was the value used in production systems in 2.4 (e.g. in SLES8) and the default
was far too small.  Note this is only allocated when the swiotlb is needed.

pci_map_single will not panic anymore on an overflow. Instead it returns
a pointer to a scratch area and allows the caller to check using 
dma_mapping_error(). It still panics when the overflow buffer is exceeded.

dma_mapping_error support is implemented.

pci_map_sg will never panic now, but just return 0. Near all callers 
of it seem to have proper error checking for this (IDE will even handle
it without erroring out) 

The handling of passing a NULL device is improved, previously it would 
never map in this case. i386 and other architectures assume NULL means a 4GB
limit instead.   This code does this now too.

I added support for swiotlb=force for easier testing.

Patch supplied by Andi Kleen & Suresh Siddha
Signed-off-by: Tony Luck <tony.luck@intel.com>

Signed-off-by: Jesse Barnes <jbarnes@sgi.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>

Fix stupid thinkos in the fcntl f_op removal code.

Update lasi 82596 driver:
 - Fix boot messages (Helge Deller)
 - Whitespace and __FILE__ usage (Joel Soete)
 - 64-bit compile warning fixes (James Bottomley)

This trivial fix allows mounting MO-drives readwrite.

Acked by Jens.
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

 - __PAGE_OFFSET is 0x10000000 (Randolph Chung)
 - PA8800 support (Grant Grundler)
 - debuglocks (Thibaut Varene)
 - PDC chassis disabling (Thibaut Varene)
 - Distinguish between Dinos in request_irq (Thibaut Varene)
 - Document interrupt registers (Randolph Chung)
 - Revamp CONFIG_DISCONTIGMEM support (Randolph Chung)
 - Remove STI console warning and special casing (Randolph Chung)
 - n4000 defconfig (Randolph Chung)
 - iosapic fixes (Bjorn Helgaas)
 - Fix a bug in entry.S where pa_dbit_lock was being trashed (Randolph Chung)
 - SMP support (Randolph Chung, Grant Grundler, James Bottomley)
 - Clear the pte in the fault handler (Joel Soete)
 - Change _exit prototype (Carlos O'Donell)
 - Better unwinding support (Randolph Chung)
 - GCC 3.4 fixes (Carlos O'Donell, Randolph Chung)

The newly introduced ->fcntl file_operation is badly thought out,
not to mention undocumented.  This patch replaces it with two better
defined operations -- check_flags and dir_notify.  Any other fcntl()s
that filesystems are interested in can have their own properly typed
f_op method when they need it.
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

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

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

Patch from Marc Singer

The work already done to rectify the timer code initialization missed
a necessary change.  This patch adds a timer initialization function
to the LPD7A400 machine type.  It also makes a small correction to the
kernel configuration that is out of step with the machine specific
Kconfig.

Patch from Marc Singer

This patch aligns the lh7a40x port with the updated structure of IDE
drivers.  It also removes an unused FIQ handler.  This patch is made
in order to get the lh7a40x port to build.

Patch from Catalin Marinas

This patch replaces the -mshort-load-bytes option with $(call
check_gcc,-malignment-traps,-mshort-load-bytes) in the CFLAGS
setting in arch/arm/Makefile.

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

into kernel.bkbits.net:/home/davem/sparc-2.6

In the *ppos cleanups, proc_dol2crvec was updated, but the prototype
found at the top of kernel/sysctl.h was not, generating warning.  This
corrects the prototype to match the code.

(I'm gonna take a stab at moving these into arch/ppc shortly)
Signed-off-by: Tom Rini <trini@kernel.crashing.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

We allow more commands if the disk was opened read-write.

They'll need it for permission checking.

Signed-off-by: David S. Miller <davem@redhat.com>

Normal users shouldn't have access to the raw device anyway
unless they are in the trusted "disk" group, but let's require
RAWIO capabilities. That's what the original SCSI interfaces
did anyhoo.

We probably _should_ just require write access, but that will
need more of a code change to pass down the file descriptor.

We must setup the queue before calling elevator_init(), otherwise the
elevator cannot use the queue members. This really hurts cfq since it
checks ->nr_requests, which is zero at that time.
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

CONFIG_SERIAL_8250_MANY_PORTS should not be set for these boards, as
they only have 2 serial ports.
Signed-off-by: Tom Rini <trini@kernel.crashing.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

With 'len' being unsigned now, we must make sure it never tries
to go negative...

Thanks: griffon26@kfk4ever.com (Maurice van der Pot)
Signed-off-by: Neil Brown <neilb@cse.unsw.edu.au>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

Eliminates costly atomic bitops in do_sparc64_fault.
Signed-off-by: David S. Miller <davem@redhat.com>

It is bogus, plus it breaks the build with
CONFIG_SWAP disabled.

Based upon a patch from Ben Collins (bcollins@debian.org)
Signed-off-by: David S. Miller <davem@redhat.com>

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

into dwmw2.baythorne.internal:/inst/bk/mtd-2.6

Patch from Jun Sun.
Signed-Off-By: David Woodhouse <dwmw2@infradead.org>

- Add Millennium Plus support.
- Add advanced probe configuration options
- Fix abuse of buffer space in scan for Media Header.

Define callback wrapper function mtd_erase_callback() to handle 
partition offsets during the callback, rather than attempting to 
fix them up in the freed erase_info structure after the callback 
has already happened.

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

Signed-off-by: Andrew Morton <akpm@osdl.org>

From: Mathieu LESNIAK <maverick@eskuel.net>


This patch corrects a problem with Netgear FA311
ethernet card (a cheap one). Without it, the MAC address is byte swapped
ie :
HWaddr 02:00:07:E3:E9:F5
instead of :
HWaddr 00:02:E3:07:F5:E9

(the correct MAC address vendor code for Netgear/LiteOn is 00:02:E3)
Signed-off-by: Andrew Morton <akpm@osdl.org>