addrconf_verify(...) only traverse address hash table when
addrconf_hash_lock is held for writing, and it may hold
addrconf_hash_lock for a long time. So I think it's better to acquire
addrconf_hash_lock for reading instead of writing
Signed-off-by: NYan Zheng <yanzheng@21cn.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

From: Alexandra Kossovsky <Alexandra.Kossovsky@oktetlabs.ru>

From http://bugzilla.kernel.org/show_bug.cgi?id=4746

There is user data corruption when using ioctl(SIOCGIFCONF) in 32-bit
application running amd64 kernel. I do not think that this problem is
exploitable, but any data corruption may lead to security problems.
Following code demonstrates the problem

#include <stdint.h>
#include <stdio.h>
#include <sys/time.h>
#include <sys/socket.h>
#include <net/if.h>
#include <sys/ioctl.h>

char buf[256];

main()
{
	int s = socket(AF_INET, SOCK_DGRAM, 0);
	struct ifconf req;
	int i;

	req.ifc_buf = buf;
	req.ifc_len = 41;

	printf("Result %d\n", ioctl(s, SIOCGIFCONF, &req));
	printf("Len %d\n", req.ifc_len);
	for (i = 41; i < 256; i++)
		if (buf[i] != 0)
			printf("Byte %d is corrupted\n", i);
}
	
Steps to reproduce:
Compile the code above into 32-bit elf and run it. You'll get
Result 0
Len 32
Byte 48 is corrupted
Byte 52 is corrupted
Byte 53 is corrupted
Byte 54 is corrupted
Byte 55 is corrupted
Signed-off-by: NAndrew Morton <akpm@osdl.org>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

This way we don't have to check it in sk_run_filter().
Signed-off-by: NKris Katterjohn <kjak@users.sourceforge.net>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

If two packets were queued to be sent at the same time in the future,
their order would be reversed.  This would occur because the queue is
traversed back to front, and a position is found by checking whether
the new packet needs to be sent before the packet being examined.  If
the new packet is to be sent at the same time of a previous packet, it
would end up before the old packet in the queue.  This patch places
packets in the correct order when they are queued to be sent at a same
time in the future.
Signed-off-by: NAndrea Bittau <a.bittau@cs.ucl.ac.uk>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

kseriod and kgameportd used to process all pending events before
checking for freeze condition. This may cause swsusp to time out
while stopping tasks when resuming. Switch to process events one
by one to check freeze status more often.
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

If thread that submitted FF request gets interrupted somehow it
will release request structure and ioctl handler will work with
freed memory. TO prevent that from happening switch to using
wait_for_completion instead of wait_for_completion_interruptible.
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

Also introduce proper locking when creating/deleting device.
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

Try to save battery power by disabling wifi and bluetooth on suspend.
Signed-off-by: NMiloslav Trmac <mitr@volny.cz>
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

Register wistron-bios as a platform device, restore WIFI and
Bluetooth state upon resume.
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

Also fix a potential issue with some notebooks:

The current code assumes the response to bios_wifi_get_default_setting is
either 1 (disabled) or 3 (enabled), or wifi isn't supported.  The BIOS
response appears to be a bit field w/ 0x1 indicating hardware presence, 0x2
indicating actiation status, and the other 6 bits being unknown/reserved --
with the patch, these 6 bits are ignored.
Signed-off-by: NBernhard Rosenkraenzer <bero@arklinux.org>
Signed-off-by: NAndrew Morton <akpm@osdl.org>
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

On x86_64:

{standard input}:233: Error: suffix or operands invalid for `push'
{standard input}:233: Error: suffix or operands invalid for `pop'
Signed-off-by: NAndrew Morton <akpm@osdl.org>
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

A driver for laptop buttons using an x86 BIOS interface that is
apparently used on quite a few laptops and seems to be originating
from Wistron.

This driver currently "knows" only about Fujitsu-Siemens Amilo Pro V2000
(i.e. it can detect the laptop using DMI and it contains the
keycode->key meaning mapping for this laptop) and Xeron SonicPro X 155G
(probably can't be reliably autodetected, requires a module parameter),
adding other laptops should be easy.

In addition to reporting button presses to the input layer the driver
also allows enabling/disabling the embedded wireless NIC (using the
"Wifi" button); this is done using the same BIOS interface, so it seems
only logical to keep the implementation together.  Any flexibility
possibly gained by allowing users to remap the function of the "Wifi"
button is IMHO not worth it when weighted against the necessity to run
an user-space daemon to convert button presses to wifi state changes.
Signed-off-by: NMiloslav Trmac <mitr@volny.cz>
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

Changing led state is pretty slow operation; when there are multiple
requests coming at a high rate they may interfere with normal typing.
Try optimize (skip) changing hardware state when multiple requests
are coming back-to-back.
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

so it does not return EACCESS (unless server really returns that).
Signed-off-by: NSteve French <sfrench@us.ibm.com>

Manual fixups to ARM ixp4xxx by hand.

Also remove bogus comments for idefloppy_init() and idetape_init().
Signed-off-by: NBartlomiej Zolnierkiewicz <bzolnier@gmail.com>

flagged_taskfile() is called from execute_drive_cmd()
(the only user) only if args->tf_out_flags.all != 0.
Signed-off-by: NBartlomiej Zolnierkiewicz <bzolnier@gmail.com>

Signed-off-by: NBartlomiej Zolnierkiewicz <bzolnier@gmail.com>

Signed-off-by: NBartlomiej Zolnierkiewicz <bzolnier@gmail.com>

Remove duplicate documentation for ide_do_drive_cmd() from
<linux/ide.h>, this function is already documented in ide-io.c.
Signed-off-by: NBartlomiej Zolnierkiewicz <bzolnier@gmail.com>

Signed-off-by: NAurelien Jarno <aurelien@aurel32.net>
Signed-off-by: NBartlomiej Zolnierkiewicz <bzolnier@gmail.com>

From: Mathias Kretschmer <posting@blx4.net>
Signed-off-by: NDaniel Drake <dsd@gentoo.org>
Acked-by: NAlan Cox <alan@lxorguk.ukuu.org.uk>
Signed-off-by: NAndrew Morton <akpm@osdl.org>
Signed-off-by: NBartlomiej Zolnierkiewicz <bzolnier@gmail.com>

Since the spinlock was removed from sa1100_start_tx(), the "flags"
variable becomes redundant.  Remove it.
Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>

The receiver status register reports latched error conditions, which
must be cleared by writing to it.  However, the data register reports
unlatched conditions which are associated with the current character.
Use the data register to interpret error status rather than the RSR.
Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>

We were using udelay in the loop on the primary cpu waiting for the
secondary cpu to take the timebase value.  Unfortunately now that
udelay uses the timebase, and the timebase is stopped at this point,
the udelay never terminated.  This fixes it by not using udelay, and
increases the number of loops before we time out to compensate.
Signed-off-by: NPaul Mackerras <paulus@samba.org>

Patch from Daniel Jacobowitz

After delivering a signal (creating its stack frame) we must check for
additional pending unblocked signals before returning to userspace.
Otherwise signals may be delayed past the next syscall or reschedule.

Once that was fixed it became obvious that the ARM signal mask manipulation
was broken.  It was a little bit broken before the recent SA_NODEFER
changes, and then very broken after them.  We must block the requested
signals before starting the handler or the same signal can be delivered
again before the handler even gets a chance to run.
Signed-off-by: NDaniel Jacobowitz <dan@codesourcery.com>
Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>

The result is mostly similar to the original ppc64 version but with
some adaptations for 32-bit compilation.

include/asm-ppc64 is now empty!
Signed-off-by: NPaul Mackerras <paulus@samba.org>

It's only used by arch/powerpc/kernel/ptrace{,32}.c.
Signed-off-by: NPaul Mackerras <paulus@samba.org>

This involves some minor changes: a few unused functions that the
ppc32 pci.c provides are no longer declared here or exported;
pcibios_assign_all_busses now just refers to the pci_assign_all_buses
variable on both 32-bit and 64-bit; pcibios_scan_all_fns is now
just 0 instead of a function that always returns 0 on 64-bit.
Signed-off-by: NPaul Mackerras <paulus@samba.org>