Alternate workaround for blocking usage of select() by UDP applications.
The problem is Linux optimizes the UDP receive checksum path so that checksum
validation is not performed until the application read. This is a performance win
but can cause applications that do select with blocking file descriptors to get false
positives if the received message has a checksum error.
There is a long running thread about this on LKML.

This patch makes these applications work, but keeps the one-pass performance gain
for those applications smart enough to use non-blocking file descriptors with
select/poll. There is still a possibility to get a false positive if application does
select on non-blocking fd then makes it blocking before doing the receive, but that
is unlikely.

Tested by injecting bad packets with SOCK_RAW.
Signed-off-by: Stephen Hemminger <shemminger@osdl.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

While looking at the SCM passing code in net/core/scm.c I noticed that there's
a 32-bit compat implementation of scm_detach_fds()'s called 
scm_detach_fds_compat() living in net/compat.c.  While these two functions
are mostly the same the latter does not include the call to the
security_file_receive() hook which is almost certainly a bug.
Signed-off-by: Mitchell Blank Jr <mitch@sfgoth.com>
Signed-off-by: James Morris <jmorris@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

Signed-off-by: Scott Feldman <sfeldma@pobox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

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

If we're waiting on a futex and we are woken up, it's either because
someone did FUTEX_WAKE, we timed out, or have been signalled.  However, the
WARN_ON(!signal_pending(current)) test is overzealous: with threads (a
common use of futexes), we share the signal handler and the other
thread might get to the signal before us.  In addition, exit_notify()
can do a recalc_sigpending_tsk() on us, which will then clear our
TIF_SIGPENDING bit, making signal_pending(current) return false.

Returning EINTR is a little strange in this case, since this thread
hasn't handled a signal.  However, with threads it's the best we can
do: there's always a race where another thread could have been the
actual one to handle the signal.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

Signed-off-by: Jesper Juhl <juhl-lkml@dif.dk>
Signed-off-by: David S. Miller <davem@davemloft.net>

Signed-off-by: Patrick Caulfield <patrick@tykepenguin.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

We need to hold refcnt before releasing rt6_lock.
Signed-off-by: Hideaki YOSHIFUJI <yoshfuji@linux-ipv6.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

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

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

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

Patch from Ben Dooks

Fixes from Koen Martens to update the 
register definitions for the MMC/SD/SDIO interface,
tidied up for release with extra notes on what has
been depreceated in later silicon.

Signed-off-by: Koen Martens
Signed-off-by: Ben Dooks
Signed-off-by: Russell King

Patch from Ben Dooks

If one of the devices fails to register, do not
remove any registered devices and continue registering
in case any more devices register.

Signed-off-by: Ben Dooks
Signed-off-by: Russell King

Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

Indentiation and logic suggest this was wrong.
Signed-off-by: Domen Puncer <domen@coderock.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

This patch fixes an an "off-by-one" error found in the CCISS_GETLUNIFO
ioctl in the cciss driver.  It is cycling through the part table of the
gendisk structure which is a zero-based array, not a one-based array.  This
often causes an oops when referencing the out-of-bounds element.

Signed-off by: Andrew Patterson <andrew.patterson@hp.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

The field info->modelist is initialized during register_framebuffer.  This
field is also referred to in fb_set_var().  Thus a call to fb_set_var()
before register_framebuffer() will cause a crash.  A few drivers do this,
notably controlfb.  (This might fix reports of controlfb crashing in
powermacs).
Signed-off-by: Antonino Daplas <adaplas@pol.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

Patch from Petr Vandrovec <vandrove@vc.cvut.cz>

Recently I've observed problems with IDE disks while running UP kernel on
x86-64 - it complained a lot about lost irq from hda/hdc.  I tracked
problem down to the problem that at enable_irq() code calls
hw_resend_irq(), but on x86-64 hw_resend_irq() does something useful only
when CONFIG_SMP is defined, on UP systems it does nothing.

Due to this IRQ is lost - and when IDE retries command, it can again happen
that IRQ is delivered before IDE code does enable_irq(), and again and
again, unless due to drive being lazy finally once kernel does enable_irq()
before drive prepares its answer, and things move forward ...  to next lost
IRQ.
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

Fix permissions on module parameters exported via sysfs.
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

The accounting of shmctl() SHM_LOCK memory locks against the user
structure is broken.  The check of the size of the to-be-locked region
is based on the size of the segment as specified when it was created by
shmget() (this size is *not* rounded up to a page boundary).

Fix it by rounding the size properlt.  Also, tune up the spinlock
coverage in there a little.
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

Revert my version of this fix and apply Scott's version, which was acked by
the e100 maintainers.

Also, initialise the spinlocks before calling e100_hw_reset(), so things don't
instantly deadlock on SMP.
Signed-off-by: Scott Feldman <sfeldma@pobox.com>
Cc: Jeff Garzik <jgarzik@pobox.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
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

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

Patch from Holger Hans Peter Freyther

Line numbers could depend on 2279/1

Change the maintainer of the SIMpad board to me. This change was discussed on the simpad linux mailinglist and was supported by the former maintainer of SIMpad. I'll subscribe and introduce myself shortly on the arm linux mailinglist and ask for SIMpad not to be removed.

Signed-off-by: Holger Hans Peter Freyther
Signed-off-by: Russell King

Patch from Holger Hans Peter Freyther

The SIMpad uses the MediaQ 200 framebuffer device. There is no driver in the vanilla kernel for that device. But adding the device to the platform bus makes it possible to just drop the mq200 driver into the kernel and the display will work.
Please consider applying the patch.



Signed-off-by: Holger Hans Peter Freyther
Signed-off-by: Russell King

Patch from Holger Hans Peter Freyther

Add a default config file for simpad


Signed-off-by: Holger Hans Peter Freyther
Signed-off-by: Russell King

Patch from Holger Hans Peter Freyther

Fix warnings emitted by the compiler for
leds-simpad.c and sa1100_simpad.c

Signed-off-by: Holger Hans Peter Freyther
Signed-off-by: Russell King

Patch from Holger Hans Peter Freyther

Fix compile of simpad.c ....

Signed-off-by: Holger Hans Peter Freyther
Signed-off-by: Russell King

 * switched to ioremap() + normal operations
 * split msnd_fifo_write() (and msnd_fifo_read()) into iomem and normal
   versions (original was even worse - it used to do __user and __iomem
   versions in the same code and in atomic context; when that bogosity
   got fixed, the difference between these cases (now normal memory and
   iomem) had been lost).
Signed-off-by: Al Viro <viro@parcelfarce.linux.theplanet.co.uk>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

Signed-off-by: Al Viro <viro@parcelfarce.linux.theplanet.co.uk>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

Signed-off-by: Al Viro <viro@parcelfarce.linux.theplanet.co.uk>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

direct dereferencing of iomem pointer (by memcmp())
Signed-off-by: Al Viro <viro@parcelfarce.linux.theplanet.co.uk>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

 * switched to ioremap()
 * switched to normal iomem operations
 * killed a bunch of phys_to_virt()
 * killed open-coded (and inferior) instances of memcpy_toio()/memcpy_fromio().
 * fixed a dumb typo introduced in "kill off isa_check_signature()"
   patch (sorry - missed the fact that it was not covered by
   allmodconfig and didn't verify until after sending the patch in
   question ;-/). 
Signed-off-by: Al Viro <viro@parcelfarce.linux.theplanet.co.uk>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

switched to ioremap() + normal iomem operations
Signed-off-by: Al Viro <viro@parcelfarce.linux.theplanet.co.uk>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

switched to ioremap() + normal iomem primitives.
Signed-off-by: Al Viro <viro@parcelfarce.linux.theplanet.co.uk>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

Patch from Nicolas Pitre

... with a bit of reorg to make the core code a bit more generic too.

Signed-off-by: Nicolas Pitre
Signed-off-by: Russell King

Patch from Ben Dooks

Check for the serial rx fifo full before checking
for the fifo size.

Signed-off-by: Ben Dooks
Signed-off-by: Russell King