Commit Graph

99650 Commits

Author SHA1 Message Date
Assaf Krauss
2ff75b7877 iwlwifi: adjust TSF in IBSS
This patch makes the driver, in IBSS mode, comply with TSF requirements
in 2 ways:
1. It notifies mac80211 of its TSF timestamp.
2. It uses the given timestamp in the beacon template to update the ucode.

Signed-off-by: Assaf Krauss <assaf.krauss@intel.com>
Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Signed-off-by: Zhu Yi <yi.zhu@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2008-06-30 17:37:42 -04:00
Assaf Krauss
4faeb86070 mac80211: add beacon timestamp to beacon template in IBSS
This patch adds a beacon timestamp to the beacon template used in IBSS
mode. This way the underlying driver can update its TSF accordingly.
According the spec station should adopt the highest TSF from an incoming
beacons in the cell.

Signed-off-by: Assaf Krauss <assaf.krauss@intel.com>
Signed-off-by: Zhu Yi <yi.zhu@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2008-06-30 17:37:42 -04:00
Mohamed Abbas
052ec3f139 iwlwifi: keep the STATUS_EXIT_PENDING flag till the end of down flow
This patch avoids unsetting STATUS_EXIT_PENDING in the middle of the
down flow.

Signed-off-by: Mohamed Abbas <mohamed.abbas@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Zhu Yi <yi.zhu@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2008-06-30 17:37:42 -04:00
Tomas Winkler
9185159d3e iwlwifi: fix IBSS association flow
This patch fixes regression caused by
'iwlwifi: send ADD_STA before RXON with assoc bit' patch.
RXON associated wasn't IBSS flow.

Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Signed-off-by: Assaf Krauss <assaf.krauss@intel.com>
Signed-off-by: Zhu Yi <yi.zhu@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2008-06-30 17:37:41 -04:00
Ron Rindjunsky
36e1f16ed2 iwlwifi: remove obsolete lq_ready use
This patch removes the use of lq_ready, once used to sync between link
quality commands to avoid race conditions, but no longer needed as
bss_info_changed is in use.

Signed-off-by: Ron Rindjunsky <ron.rindjunsky@intel.com>
Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Signed-off-by: Zhu Yi <yi.zhu@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2008-06-30 17:37:41 -04:00
Ron Rindjunsky
0c70515f23 iwlwifi: move rx aggregation functions to iwl-rx.c
This patch moves Rx aggregation functions into iwl-rx.c

Signed-off-by: Ron Rindjunsky <ron.rindjunsky@intel.com>
Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Signed-off-by: Zhu Yi <yi.zhu@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2008-06-30 17:37:41 -04:00
Emmanuel Grumbach
653fa4a075 iwlwifi: setup compressed BA handler
This patch sets the compressed BA handler for 5000. This allows the rate
scaling algorithm to take in count frames that were sent in AMPDUs.

The compressed BA handler has been moved to iwl-rx.c since it is common to
4965 and 5000.

Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Signed-off-by: Zhu Yi <yi.zhu@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2008-06-30 17:37:40 -04:00
Emmanuel Grumbach
4b8817b2a0 iwlwifi: remove useless network and duplicate checking
The iwlwifi drivers go to great lengths to avoid passing packets to
mac80211 they think shouldn't go there, while mac80211 can (of course!)
handle them very well.

Especially in the case of duplicate packets this is interesting
because it's such a performance hog (especially for IBSS networks)
while mac80211 does that work on the side without much effort.

This patch removes all that and leaves only what is absolutely
necessary for the hardware.

Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Signed-off-by: Zhu Yi <yi.zhu@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2008-06-30 17:37:40 -04:00
Emmanuel Grumbach
1781a07fbe iwlwifi: move RX handlers to iwl-rx.c
This patch moves RX handlers to iwl-rx.c

Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Signed-off-by: Zhu Yi <yi.zhu@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2008-06-30 17:37:40 -04:00
Emmanuel Grumbach
37deb2a0ba iwlwifi: don't send REPLY_REMOVE_ALL_STA upon exit
This patch avoids sending REPLY_REMOVE_ALL_STA in down flow, this avoids a
meaningless warning from being printed
On the way this patch also renames the the function to
iwl_clear_stations_table

Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Signed-off-by: Zhu Yi <yi.zhu@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2008-06-30 17:37:39 -04:00
Emmanuel Grumbach
8f91aecb4c iwlwifi: move RX stats to core, and move temperature to handler
This patch moves RX stats flow to core modules, and moves temperature
calibration to handler since it is not needed in 5000.

Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Signed-off-by: Zhu Yi <yi.zhu@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2008-06-30 17:37:39 -04:00
Emmanuel Grumbach
43d59b3237 iwlwifi: send ADD_STA before RXON with assoc bit
This patch fixes a bug in association flow. As soon as RXON with assoc bit
is sent, uCode expects to have an entry in its station table that describe
the AP. Receiving a beacon from an HT AP before sending ADD_STA results a
uCode error. This patch sends first the ADD_STA (bcast and bssid) and only
then RXON with assoc bit set

Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Gregory Greenman <gregory.greenman@intel.com>
Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Signed-off-by: Zhu Yi <yi.zhu@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2008-06-30 17:37:39 -04:00
Emmanuel Grumbach
ebbbdc3fb7 iwlwifi: add REPLY_TX_POWER_DBM_CMD to get_cmd_string
This patch adds REPLY_TX_POWER_DBM_CMD to get_cmd_string.

Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Signed-off-by: Zhu Yi <yi.zhu@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2008-06-30 17:37:39 -04:00
Ron Rindjunsky
5d1e2325ac iwlwifi: use iwl_is_associated when possible
This patch add uses of iwl_is_associated in places it is suitable in.

Signed-off-by: Ron Rindjunsky <ron.rindjunsky@intel.com>
Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Signed-off-by: Zhu Yi <yi.zhu@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2008-06-30 17:37:38 -04:00
Emmanuel Grumbach
24e5c40130 iwlwifi: better station table maintenance
This patch makes the station table maintenance safer. Two flags are
maintained:

1) if station is present in driver
2) if station is present in uCode

This will allow us in the future to deal with more stations than the
firmware allows.

Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Signed-off-by: Zhu Yi <yi.zhu@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2008-06-30 17:37:38 -04:00
Tomas Winkler
f236a26577 iwlwifi: Add eeprom version to the version file in sysfs
This patch adds eeprom version display into device/version sysfs file
/sys/class/net/wlanX/devices/version

Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Signed-off-by: Gregory Greenman <gregory.greenman@intel.com>
Signed-off-by: Zhu Yi <yi.zhu@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2008-06-30 17:37:38 -04:00
Gregory Greenman
853554accc iwlwifi: configure uCode to use open loop tx power algorithm
This patch configures uCode to use open loop tx power algorithm
via TX_POWER_DBM (0x98) host command.

Signed-off-by: Gregory Greenman <gregory.greenman@intel.com>
Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Signed-off-by: Zhu Yi <yi.zhu@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2008-06-30 17:37:37 -04:00
Adel Gadllah
bc19d6e0b7 b43/b43legacy: add RFKILL_STATE_HARD_BLOCKED support
This patch sets the rfkill state to RFKILL_STATE_HARD_BLOCKED when the
radio is killed by the hardware switch.

Signed-off-by: Adel Gadllah <adel.gadllah@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2008-06-30 17:37:37 -04:00
Adel Gadllah
f97d1f489d b43/b43legacy: use RFKILL_STATE_UNBLOCKED instead of RFKILL_STATE_ON
This patch removes the usage RFKILL_STATE_ON and uses
RFKILL_STATE_UNBLOCKED instead.

Signed-off-by: Adel Gadllah <adel.gadllah@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2008-06-30 17:37:37 -04:00
Tomas Winkler
5479d0e739 mac80211: fix warning: unused variable invoke_tx_handlers
This patch fixes warning: unused variable in invoke_tx_handlers
when compiling without MAC80211_DEBUG option

Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2008-06-30 17:37:36 -04:00
Pavel Roskin
7cd8d3ea51 hostap: use radiotap headers by default
Signed-off-by: Pavel Roskin <proski@gnu.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2008-06-30 17:37:36 -04:00
Pavel Roskin
573b933f8f hostap: add radiotap support in monitor mode
Provide MAC time, rate, channel, signal and noise.

Signed-off-by: Pavel Roskin <proski@gnu.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2008-06-30 17:37:36 -04:00
Pavel Roskin
b53a5dabc5 hostap: don't skip any headers in hostap_80211_header_parse()
Don't try to skip any headers in hostap_80211_header_parse().  We never
use that function for interfaces affected by local->monitor_type.  Both
the master and the AP interface receive 802.11 frames without any
additional headers.

Signed-off-by: Pavel Roskin <proski@gnu.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2008-06-30 17:37:35 -04:00
Adel Gadllah
245727c180 iwlwifi: fix rfkill deps and remove input device usage
This patch fixes the rfkill deps for iwl4965/5000
and removes the input device usage.

Signed-off-by: Adel Gadllah <adel.gadllah@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2008-06-30 17:37:35 -04:00
Ester Kummer
ae6a44e3af mac80211: removing duplicated parsing of information elements
This patch removes the duplicated parsing of information elements
in ieee80211_rx_bss_info and in ieee_rx_mgmt_beacon

Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Signed-off-by: Ester Kummer <ester.kummer@intel.com>
Acked-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2008-06-30 17:37:35 -04:00
Adrian Bunk
e5f5e7339c build algorithms into the mac80211 module
The old infrastructure was:
- the default algorithm is built into mac80211
- other algorithms get into their own modules

The implementation of this complicated scheme was horrible
(just look at net/mac80211/Makefile), and anyone adding a new
algorithm would most likely not get it right at his first attempt.

This patch therefore builds all enabled algorithms into the mac80211
module.

The user interface for the rate control algorithms changes as follows:
- first the user can choose which algorithms to enable (currently only
  MAC80211_RC_PID is available)
- if more than one algorithm is enabled (currently not possible since
  only one algorithm is present) the user then chooses the default one

Note:
- MAC80211_RC_PID is always enables for CONFIG_EMBEDDED=n

Technical changes:
- all selected algorithms get into the mac80211 module
- net/mac80211/Makefile can now become much less complicated
- support for rc80211_pid_algo.c being modular is no longer required
- this includes unexporting mesh_plink_broken

Signed-off-by: Adrian Bunk <bunk@kernel.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2008-06-30 17:37:34 -04:00
Emmanuel Grumbach
bf998f6864 mac80211: add last beacon time in scan list
This patch adds the interval between the scan results and the last time a
beacon was received in the result of the scan.

Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2008-06-30 17:37:34 -04:00
Tomas Winkler
06ff47bc95 mac80211: add spectrum capabilities
This patch add spectrum capability and required information
elements to association request providing AP has requested it and
it is supported by the driver

Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Signed-off-by: Assaf Krauss <assaf.krauss@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2008-06-30 17:37:34 -04:00
Yi Zhu
7b1e78d505 mac80211: add MAC80211_VERBOSE_SPECT_MGMT_DEBUG Kconfig option
The patch introduces MAC80211_VERBOSE_SPECT_MGMT_DEBUG Kconfig option to
suppress Spectrum Management 802.11h related debug logs.

Signed-off-by: Zhu Yi <yi.zhu@intel.com>
Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2008-06-30 17:37:33 -04:00
John W. Linville
edd4b53e03 iwl-rfkill.c: correct 'recieved' typo
Correct typo introduced by "wireless: remove RFKILL_STATE_HARD_BLOCKED
warnings".

Signed-off-by: John W. Linville <linville@tuxdriver.com>
2008-06-30 17:37:33 -04:00
Laurent Pinchart
c0efd23292 V4L/DVB (8145a): USB Video Class driver
This driver supports video input devices compliant with the USB Video Class
specification. This means lots of currently manufactured webcams, and probably
most of the future ones.

Signed-off-by: Laurent Pinchart <laurent.pinchart@skynet.be>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2008-06-30 17:31:13 -03:00
David S. Miller
2a64cc4b79 Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/linville/wireless-2.6 2008-06-30 13:18:53 -07:00
Emmanuel Grumbach
23976efedd mac80211: don't accept WEP keys other than WEP40 and WEP104
This patch makes mac80211 refuse a WEP key whose length is not WEP40 nor
WEP104.

Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2008-06-30 15:43:53 -04:00
Pavel Roskin
1bcca3c463 hostap: fix sparse warnings
Rewrite AID calculation in handle_pspoll() to avoid truncating bits.
Make hostap_80211_header_parse() static, don't export it.  Avoid
shadowing variables.

Signed-off-by: Pavel Roskin <proski@gnu.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2008-06-30 15:43:52 -04:00
Pavel Roskin
15ea0ebc5b hostap: don't report useless WDS frames by default
DEBUG_EXTRA is reported to the kernel log by default, but DEBUG_EXTRA2
is not.  Unrelated WDS frames pollute the log unnecessarily.

Signed-off-by: Pavel Roskin <proski@gnu.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2008-06-30 15:43:52 -04:00
Joonwoo Park
aebb6a849c textsearch: fix Boyer-Moore text search bug
The current logic has a bug which cannot find matching pattern, if the
pattern is matched from the first character of target string.
for example:
	pattern=abc, string=abcdefg
	pattern=a,   string=abcdefg
Searching algorithm should return 0 for those things.

Signed-off-by: Joonwoo Park <joonwpark81@gmail.com>
Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-06-30 12:42:23 -07:00
Jozsef Kadlecsik
84ebe1cdae netfilter: nf_conntrack_tcp: fixing to check the lower bound of valid ACK
Lost connections was reported by Thomas Bätzler (running 2.6.25 kernel) on
the netfilter mailing list (see the thread "Weird nat/conntrack Problem
with PASV FTP upload"). He provided tcpdump recordings which helped to
find a long lingering bug in conntrack.

In TCP connection tracking, checking the lower bound of valid ACK could
lead to mark valid packets as INVALID because:

 - We have got a "higher or equal" inequality, but the test checked
   the "higher" condition only; fixed.
 - If the packet contains a SACK option, it could occur that the ACK
   value was before the left edge of our (S)ACK "window": if a previous
   packet from the other party intersected the right edge of the window
   of the receiver, we could move forward the window parameters beyond
   accepting a valid ack. Therefore in this patch we check the rightmost
   SACK edge instead of the ACK value in the lower bound of valid (S)ACK
   test.

Signed-off-by: Jozsef Kadlecsik <kadlec@blackhole.kfki.hu>
Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-06-30 12:41:30 -07:00
Bartlomiej Zolnierkiewicz
4283e1babe ide: fix /proc/ide/ide?/mate reporting
Now that we support warm-plug mate port will be registered
even if there are no devices attached to it.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-06-30 20:14:45 +02:00
Bartlomiej Zolnierkiewicz
a529b59060 Revert "BAST: Remove old IDE driver"
This reverts commit ac1623625c.

It was premature to remove it now, we will do it post-2.6.26.

Thanks to Russell King for noticing the issue.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-06-30 20:13:31 +02:00
Catalin Marinas
08383ef29f [ARM] 5131/1: Annotate platform_secondary_init with trace_hardirqs_off
This patch annotates the platform_secondary_init function in
arch/arm/mach-realview/platsmp.c with trace_hardirqs_off to avoid a
warning when LOCKDEP and TRACE_IRQFLAGS are enabled.

Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2008-06-30 19:08:53 +01:00
Linus Torvalds
e1441b9a41 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input:
  Input: fix locking in force-feedback core
  Input: add KEY_MEDIA_REPEAT definition
2008-06-30 08:58:09 -07:00
Linus Torvalds
70c85057e0 Merge branch 'core-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'core-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  debugobjects: fix lockdep warning
2008-06-30 08:57:43 -07:00
Linus Torvalds
e6100f2337 Merge branch 'sched-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'sched-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  sched: fix cpu hotplug
2008-06-30 08:57:19 -07:00
Linus Torvalds
bbad5d4750 Merge branch 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  ptrace GET/SET FPXREGS broken
  x86: fix cpu hotplug crash
  x86: section/warning fixes
  x86: shift bits the right way in native_read_tscp
2008-06-30 08:56:57 -07:00
Dmitry Torokhov
656acd2bbc Input: fix locking in force-feedback core
The newly added event_lock spinlock in the input core disallows sleeping
and therefore using mutexes in event handlers. Convert force-feedback
core to rely on event_lock instead of mutex to protect slots allocated
for fore-feedback effects. The original mutex is still used to serialize
uploading and erasing of effects.

Reported-by: Anssi Hannula <anssi.hannula@gmail.com>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
2008-06-30 09:26:02 -04:00
Bastien Nocera
4bbff7e408 Input: add KEY_MEDIA_REPEAT definition
This patch adds the Repeat key to the input layer. The usage
in the HUT is 0xBC (listed under "15.7 Transport Controls").

Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
2008-06-30 09:25:12 -04:00
TAKADA Yoshihito
11dbc963a8 ptrace GET/SET FPXREGS broken
When I update kernel 2.6.25 from 2.6.24, gdb does not work.
On 2.6.25, ptrace(PTRACE_GETFPXREGS, ...) returns ENODEV.

But 2.6.24 kernel's ptrace() returns EIO.
It is issue of compatibility.

I attached test program as pt.c and patch for fix it.

#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <signal.h>
#include <errno.h>
#include <sys/ptrace.h>
#include <sys/types.h>

struct user_fxsr_struct {
	unsigned short	cwd;
	unsigned short	swd;
	unsigned short	twd;
	unsigned short	fop;
	long	fip;
	long	fcs;
	long	foo;
	long	fos;
	long	mxcsr;
	long	reserved;
	long	st_space[32];	/* 8*16 bytes for each FP-reg = 128 bytes */
	long	xmm_space[32];	/* 8*16 bytes for each XMM-reg = 128 bytes */
	long	padding[56];
};

int main(void)
{
  pid_t pid;

  pid = fork();

  switch(pid){
  case -1:/*  error */
    break;
  case 0:/*  child */
    child();
    break;
  default:
    parent(pid);
    break;
  }
  return 0;
}

int child(void)
{
  ptrace(PTRACE_TRACEME);
  kill(getpid(), SIGSTOP);
  sleep(10);
  return 0;
}
int parent(pid_t pid)
{
  int ret;
  struct user_fxsr_struct fpxregs;

  ret = ptrace(PTRACE_GETFPXREGS, pid, 0, &fpxregs);
  if(ret < 0){
    printf("%d: %s.\n", errno, strerror(errno));
  }
  kill(pid, SIGCONT);
  wait(pid);
  return 0;
}

/* in the kerel, at kernel/i387.c get_fpxregs() */

Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-06-30 14:35:18 +02:00
Zhang, Yanmin
fcb43042ef x86: fix cpu hotplug crash
Vegard Nossum reported crashes during cpu hotplug tests:

  http://marc.info/?l=linux-kernel&m=121413950227884&w=4

In function _cpu_up, the panic happens when calling
__raw_notifier_call_chain at the second time. Kernel doesn't panic when
calling it at the first time. If just say because of nr_cpu_ids, that's
not right.

By checking the source code, I found that function do_boot_cpu is the culprit.
Consider below call chain:
 _cpu_up=>__cpu_up=>smp_ops.cpu_up=>native_cpu_up=>do_boot_cpu.

So do_boot_cpu is called in the end. In do_boot_cpu, if
boot_error==true, cpu_clear(cpu, cpu_possible_map) is executed. So later
on, when _cpu_up calls __raw_notifier_call_chain at the second time to
report CPU_UP_CANCELED, because this cpu is already cleared from
cpu_possible_map, get_cpu_sysdev returns NULL.

Many resources are related to cpu_possible_map, so it's better not to
change it.

Below patch against 2.6.26-rc7 fixes it by removing the bit clearing in
cpu_possible_map.

Signed-off-by: Zhang Yanmin <yanmin_zhang@linux.intel.com>
Tested-by: Vegard Nossum <vegard.nossum@gmail.com>
Acked-by: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-06-30 13:15:43 +02:00
Linus Torvalds
1702b52092 Merge git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/v4l-dvb
* git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/v4l-dvb: (42 commits)
  V4L/DVB (8108): Fix open/close race in saa7134
  V4L/DVB (8100): V4L/vivi: fix possible memory leak in vivi_fillbuff
  V4L/DVB (8097): xc5000: check device hardware state to determine if firmware download is needed
  V4L/DVB (8096): au8522: prevent false-positive lock status
  V4L/DVB (8092): videodev: simplify and fix standard enumeration
  V4L/DVB (8075): stv0299: Uncorrected block count and bit error rate fixed
  V4L/DVB (8074): av7110: OSD transfers should not be interrupted
  V4L/DVB (8073): av7110: Catch another type of ARM crash
  V4L/DVB (8071): tda10023: Fix possible kernel oops during initialisation
  V4L/DVB (8069): cx18: Fix S-Video and Compsite inputs for the Yuan MPC718 and enable card entry
  V4L/DVB (8068): cx18: Add I2C slave reset via GPIO upon initialization
  V4L/DVB (8067): cx18: Fix firmware load for case when digital capture happens first
  V4L/DVB (8066): cx18: Fix audio mux input definitions for HVR-1600 Line In 2 and FM radio
  V4L/DVB (8063): cx18: Fix unintended auto configurations in cx18-av-core
  V4L/DVB (8061): cx18: only select tuner / frontend modules if !DVB_FE_CUSTOMISE
  V4L/DVB (8048): saa7134: Fix entries for Avermedia A16d and Avermedia E506
  V4L/DVB (8044): au8522: tuning optimizations
  V4L/DVB (8043): au0828: add support for additional USB device id's
  V4L/DVB (8042): DVB-USB UMT-010 channel scan oops
  V4L/DVB (8040): soc-camera: remove soc_camera_host_class class
  ...
2008-06-29 12:23:10 -07:00
Linus Torvalds
0acbbee440 Merge branch 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6
* 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6:
  dock: bay: Don't call acpi_walk_namespace() when ACPI is disabled.
  ACPI: don't walk tables if ACPI was disabled
  thermal: Create CONFIG_THERMAL_HWMON=n
2008-06-29 12:22:30 -07:00