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This is a revision of the previously submitted patch, which alters
the way files are organized and compiled in the following manner:
* UDP and UDP-Lite now use separate object files
* source file dependencies resolved via header files
net/ipv{4,6}/udp_impl.h
* order of inclusion files in udp.c/udplite.c adapted
accordingly
[NET/IPv4]: Support for the UDP-Lite protocol (RFC 3828)
This patch adds support for UDP-Lite to the IPv4 stack, provided as an
extension to the existing UDPv4 code:
* generic routines are all located in net/ipv4/udp.c
* UDP-Lite specific routines are in net/ipv4/udplite.c
* MIB/statistics support in /proc/net/snmp and /proc/net/udplite
* shared API with extensions for partial checksum coverage
[NET/IPv6]: Extension for UDP-Lite over IPv6
It extends the existing UDPv6 code base with support for UDP-Lite
in the same manner as per UDPv4. In particular,
* UDPv6 generic and shared code is in net/ipv6/udp.c
* UDP-Litev6 specific extensions are in net/ipv6/udplite.c
* MIB/statistics support in /proc/net/snmp6 and /proc/net/udplite6
* support for IPV6_ADDRFORM
* aligned the coding style of protocol initialisation with af_inet6.c
* made the error handling in udpv6_queue_rcv_skb consistent;
to return `-1' on error on all error cases
* consolidation of shared code
[NET]: UDP-Lite Documentation and basic XFRM/Netfilter support
The UDP-Lite patch further provides
* API documentation for UDP-Lite
* basic xfrm support
* basic netfilter support for IPv4 and IPv6 (LOG target)
Signed-off-by: Gerrit Renker <gerrit@erg.abdn.ac.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
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This patch contains the scheduled removal of the frame diverter.
Signed-off-by: Adrian Bunk <bunk@stusta.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
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This adds 3 sysctls which govern the retransmission behaviour of DCCP control
packets (3way handshake, feature negotiation).
It removes 4 FIXMEs from the code.
The close resemblance of sysctl variables to their TCP analogues is emphasised
not only by their name, but also by giving them the same initial values.
This is useful since there is not much practical experience with DCCP yet.
Furthermore, with regard to the previous patch, it is now possible to limit
the number of keepalive-Responses by setting net.dccp.default.request_retries
(also a bit like in TCP).
Lastly, added documentation of all existing DCCP sysctls.
Signed-off-by: Gerrit Renker <gerrit@erg.abdn.ac.uk>
Signed-off-by: Arnaldo Carvalho de Melo <acme@mandriva.com>
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This patch does the following:
a) introduces variable-length checksums as specified in [RFC 4340, sec. 9.2]
b) provides necessary socket options and documentation as to how to use them
c) basic support and infrastructure for the Minimum Checksum Coverage feature
[RFC 4340, sec. 9.2.1]: acceptability tests, user notification and user
interface
In addition, it
(1) fixes two bugs in the DCCPv4 checksum computation:
* pseudo-header used checksum_len instead of skb->len
* incorrect checksum coverage calculation based on dccph_x
(2) removes dccp_v4_verify_checksum() since it reduplicates code of the
checksum computation; code calling this function is updated accordingly.
(3) now uses skb_checksum(), which is safer than checksum_partial() if the
sk_buff has is a non-linear buffer (has pages attached to it).
(4) fixes an outstanding TODO item:
* If P.CsCov is too large for the packet size, drop packet and return.
The code has been tested with applications, the latest version of tcpdump now
comes with support for partial DCCP checksums.
Signed-off-by: Gerrit Renker <gerrit@erg.abdn.ac.uk>
Signed-off-by: Arnaldo Carvalho de Melo <acme@mandriva.com>
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Rearrange TCP entries in alpha order.
Signed-off-by: Stephen Hemminger <shemminger@osdl.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Allow normal users to only choose among a restricted set of congestion
control choices. The default is reno and what ever has been configured
as default. But the policy can be changed by administrator at any time.
For example, to allow any choice:
cp /proc/sys/net/ipv4/tcp_available_congestion_control \
/proc/sys/net/ipv4/tcp_allowed_congestion_control
Signed-off-by: Stephen Hemminger <shemminger@osdl.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Create /proc/sys/net/ipv4/tcp_available_congestion_control
that reflects currently available TCP choices.
Signed-off-by: Stephen Hemminger <shemminger@osdl.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Most PHYs connect to an ethernet controller over a GMII or MII
interface. However, a growing number are connected over
different interfaces, such as RGMII or SGMII.
The ethernet driver will tell the PHY what type of connection it
is by setting it manually, or passing it in through phy_connect
(or phy_attach).
Changes include:
* Updates to documentation
* Updates to PHY Lib consumers
* Changes to PHY Lib to add interface support
* Some minor changes to whitespace in phy.h
* gianfar driver now detects interface and passes appropriate
value to PHY Lib
Signed-off-by: Andrew Fleming <afleming@freescale.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
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Signed-off-by: Auke Kok <auke-jan.h.kok@intel.com>
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* master.kernel.org:/pub/scm/linux/kernel/git/gregkh/usb-2.6: (103 commits)
usbcore: remove unused argument in autosuspend
USB: keep count of unsuspended children
USB hub: simplify remote-wakeup handling
USB: struct usb_device: change flag to bitflag
OHCI: make autostop conditional on CONFIG_PM
USB: Add autosuspend support to the hub driver
EHCI: Fix root-hub and port suspend/resume problems
USB: create a new thread for every USB device found during the probe sequence
USB: add driver for the USB debug devices
USB: added dynamic major number for USB endpoints
USB: pegasus error path not resetting task's state
USB: endianness fix for asix.c
USB: build the appledisplay driver
USB serial: replace kmalloc+memset with kzalloc
USB: hid-core: canonical defines for Apple USB device IDs
USB: idmouse cleanup
USB: make drivers/usb/core/driver.c:usb_device_match() static
USB: lh7a40x_udc remove double declaration
USB: pxa2xx_udc recognizes ixp425 rev b0 chip
usbtouchscreen: add support for DMC TSC-10/25 devices
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* master.kernel.org:/pub/scm/linux/kernel/git/gregkh/driver-2.6: (36 commits)
Driver core: show drivers in /sys/module/
Documentation/driver-model/platform.txt update/rewrite
Driver core: platform_driver_probe(), can save codespace
driver core: Use klist_remove() in device_move()
driver core: Introduce device_move(): move a device to a new parent.
Driver core: make drivers/base/core.c:setup_parent() static
driver core: Introduce device_find_child().
sysfs: sysfs_write_file() writes zero terminated data
cpu topology: consider sysfs_create_group return value
Driver core: Call platform_notify_remove later
ACPI: Change ACPI to use dev_archdata instead of firmware_data
Driver core: add dev_archdata to struct device
Driver core: convert sound core to use struct device
Driver core: change mem class_devices to be real devices
Driver core: convert fb code to use struct device
Driver core: convert firmware code to use struct device
Driver core: convert mmc code to use struct device
Driver core: convert ppdev code to use struct device
Driver core: convert PPP code to use struct device
Driver core: convert cpuid code to use struct device
...
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This is almost a rewrite of the driver-model/platform.txt documentation;
the previous text was obsolete (for several years), evidently it never
got updated to match the change from being a PC "legacy_bus" to the more
widely used core bus for most embedded systems.
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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Allright. As Greg KH suggested I split this big patch into smaller ones to
make the changes easier to review. Having no better idea how to split that I
split it on a 'patch per file' basis. All those patches clean redundant 'if' before
usb_unlink/free/kill_urb():
if (urb)
usb_free_urb(urb); /* unlink / free / kill */
I decided not to touch bigger 'if's like
if (urb) {
usb_kill_urb(urb);
usb_free_urb(urb);
urb = NULL;
}
as that would be probably too intrusive. One of patches also fixes
drivers/usb/misc/auerswald.c memleak I found when digging the code. All those
patches are against 2.6.19-rc4.
Signed-off-by: Mariusz Kozlowski <m.kozlowski@tuxland.pl>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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Changes persistant -> persistent. www.dictionary.com does not know
persistant (with an A), but should it be one of those things you can
spell in more than one correct way, let me know.
Signed-off-by: Jan Engelhardt <jengelh@gmx.de>
Signed-off-by: Adrian Bunk <bunk@stusta.de>
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This patch fixes typos in various Documentation txts. The patch addresses some
misc words.
Signed-off-by: Matt LaPlante <kernel1@cyberdogtech.com>
Acked-by: Randy Dunlap <rdunlap@xenotime.net>
Signed-off-by: Adrian Bunk <bunk@stusta.de>
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This patch fixes typos in various Documentation txts. The patch addresses some
+words starting with the letters 'U-Z'.
Looks like I made it through the alphabet...just in time to start over again
+too! Maybe I can fit more profound fixes into the next round...? Time will
+tell. :)
Signed-off-by: Matt LaPlante <kernel1@cyberdogtech.com>
Acked-by: Randy Dunlap <rdunlap@xenotime.net>
Signed-off-by: Adrian Bunk <bunk@stusta.de>
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This patch fixes typos in various Documentation txts. The patch addresses some
+words starting with the letter 'T'.
Signed-off-by: Matt LaPlante <kernel1@cyberdogtech.com>
Acked-by: Randy Dunlap <rdunlap@xenotime.net>
Signed-off-by: Adrian Bunk <bunk@stusta.de>
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This updates the RTC documentation to summarize the two APIs now available:
the old PC/AT one, and the new RTC class drivers. It also updates the
included "rtctest.c" file to better meet Linux style guidelines, and to work
with the new RTC drivers.
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Acked-by: Alessandro Zummo <a.zummo@towertech.it>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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Signed-off-by: Alexey Dobriyan <adobriyan@openvz.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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Change Documentation/filesystems/udf.txt from saying that read/write mounts
on cd media are not supported to instead state the current level of
support. Specifically that it works fine on dvd+rw media and can be made
to work on cd-rw media via the pktcdvd device.
Cc: Peter Osterlund <petero2@telia.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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Disable MSI support on HD-audio driver as default since there are too
many broken devices.
The module option is changed from disable_msi to enable_msi, too. For
turning MSI support on, pass enable_msi=1, instead.
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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Timer overrides are normally disabled on Nvidia board because
they are commonly wrong, except on new ones with HPET support.
Unfortunately there are quite some Asus boards around that
don't have HPET, but need a timer override.
We don't know yet how to handle this transparently,
but at least add a command line option to force the timer override
and let them boot.
Cc: len.brown@intel.com
Signed-off-by: Andi Kleen <ak@suse.de>
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The basic issue is that despite have been deprecated and warned about as a
very bad thing in the man pages since its inception there are a few real
users of sys_sysctl. It was my assumption that because sysctl had been
deprecated for all of 2.6 there would be no user space users by this point,
so I initially gave sys_sysctl a very short deprecation period.
Now that I know there are a few real users the only sane way to proceed
with deprecation is to push the time limit out to a year or two work and
work with distributions that have big testing pools like fedora core to
find these last remaining users.
Which means that the sys_sysctl interface needs to be maintained in the
meantime.
Since I have provided a technical measure that allows us to add new sysctl
entries without reserving more binary numbers I believe that is enough to
fix the sys_sysctl binary interface maintenance problems, because there is
no longer a need to change the binary interface at all.
Since the sys_sysctl implementation needs to stay around for a while and
the worst of the maintenance issues that caused us to occasionally break
the ABI have been addressed I don't see any advantage in continuing with
the removal of sys_sysctl.
So instead of merely increasing the deprecation period this patch removes
the deprecation of sys_sysctl and modifies the kernel to compile the code
in by default.
With committing to maintain sys_sysctl we get all of the advantages of a
fast interface for anything that needs it. Currently sys_sysctl is about
5x faster than /proc/sys, for the same string data.
Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
Acked-by: Alan Cox <alan@redhat.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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set_mb() is used by set_current_state() which needs mb(), not wmb(). I
think it would be right to assume that set_mb() implies mb(), all arches
seem to do just this.
Signed-off-by: Oleg Nesterov <oleg@tv-sign.ru>
Acked-by: David Howells <dhowells@redhat.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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* master.kernel.org:/pub/scm/linux/kernel/git/gregkh/usb-2.6:
USB: use MII hooks only if CONFIG_MII is enabled
USB Storage: unusual_devs.h entry for Sony Ericsson P990i
USB: xpad: additional USB id's added
USB: fix compiler issues with newer gcc versions
USB: HID: add blacklist AIRcable USB, little beautification
USB: usblp: fix system suspend for some systems
USB: failure in usblp's error path
usbtouchscreen: use endpoint address from endpoint descriptor
USB: sierra: Fix id for Sierra Wireless MC8755 in new table
USB: new VID/PID-combos for cp2101
hid-core: big-endian fix fix
USB: usb-storage: Unusual_dev update
USB: add another sierra wireless device id
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getdelays reports a "fatal reply error, errno 258". We don't have enough room
for multi-threaded exit (PID + TGID).
Signed-off-by: Oleg Nesterov <oleg@tv-sign.ru>
Cc: Balbir Singh <balbir@in.ibm.com>
Cc: Shailabh Nagar <nagar@watson.ibm.com>
Cc: Jay Lan <jlan@engr.sgi.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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Add a swsusp debugging mode. This does everything that's needed for a suspend
except for actually suspending. So we can look in the log messages and work
out a) what code is being slow and b) which drivers are misbehaving.
(1)
# echo testproc > /sys/power/disk
# echo disk > /sys/power/state
This should turn off the non-boot CPU, freeze all processes, wait for 5
seconds and then thaw the processes and the CPU.
(2)
# echo test > /sys/power/disk
# echo disk > /sys/power/state
This should turn off the non-boot CPU, freeze all processes, shrink
memory, suspend all devices, wait for 5 seconds, resume the devices etc.
Cc: Pavel Machek <pavel@ucw.cz>
Cc: Stefan Seyfried <seife@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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Move journal-api into filesystems.tmpl as a Chapter. Applies on top of the
previous docbook: make a filesystems book patch.
Remove trailing whitespace from journal-api chapter. Align some of the
tags.
Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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Correct a few comments in kernel-doc Doc and source files.
(akpm: note: the patch removes a non-ascii character and might have to be
applied by hand..)
Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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This patch add AIRcable USBto USB-HID blacklist, makes some little
changes things in the Kconfig to make AIRcable USB look as all the rest
of drivers. And it removes the readme part that was on
Documentation/usb/usb-serial.txt because it is not needed anymore.
Signed-off-by: Naranjo Manuel Francisco <naranjo.manuel@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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Since we already moved to GENERIC_TIME, we should implement alternatives
of old do_gettimeoffset routines to get sub-jiffies resolution from
gettimeofday(). This patch includes:
* MIPS clocksource support (based on works by Manish Lachwani).
* remove unused gettimeoffset routines and related codes.
* remove unised 64bit do_div64_32().
* simplify mips_hpt_init. (no argument needed, __init tag)
* simplify c0_hpt_timer_init. (no need to write to c0_count)
* remove some hpt_init routines.
* mips_hpt_mask variable to specify bitmask of hpt value.
* convert jmr3927_do_gettimeoffset to jmr3927_hpt_read.
* convert ip27_do_gettimeoffset to ip27_hpt_read.
* convert bcm1480_do_gettimeoffset to bcm1480_hpt_read.
* simplify sb1250 hpt functions. (no need to subtract and shift)
Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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Make a filesystems DocBook book/file by moving all filesystems info from
kernel-api.tmpl. Will also merge journal-api.tmpl into it soon (with
permission from Roger Gammans). Localizes filesystem info and reduces size
of the huge (produced) kernel-api output files.
Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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* git://git.kernel.org/pub/scm/linux/kernel/git/wim/linux-2.6-watchdog: (33 commits)
[WATCHDOG] remove experimental on iTCO_wdt.c
[WATCHDOG] Atmel AT91RM9200 rename.
[WATCHDOG] includes for sample watchdog program.
[WATCHDOG] watchdog/iTCO_wdt: fix bug related to gcc uninit warning
[WATCHDOG] add ich8 support to iTCO_wdt.c (patch 2)
[WATCHDOG] add ich8 support to iTCO_wdt.c
[WATCHDOG] ioremap balanced with iounmap for drivers/char/watchdog/s3c2410_wdt.c
[WATCHDOG] w83697hf/hg WDT driver - Kconfig patch
[WATCHDOG] w83697hf/hg WDT driver - autodetect patch
[WATCHDOG] w83697hf/hg WDT driver - patch 16
[WATCHDOG] w83697hf/hg WDT driver - patch 15
[WATCHDOG] w83697hf/hg WDT driver - patch 14
[WATCHDOG] w83697hf/hg WDT driver - patch 13
[WATCHDOG] w83697hf/hg WDT driver - patch 12
[WATCHDOG] w83697hf/hg WDT driver - patch 11
[WATCHDOG] w83697hf/hg WDT driver - patch 10
[WATCHDOG] w83697hf/hg WDT driver - patch 9
[WATCHDOG] w83697hf/hg WDT driver - patch 8
[WATCHDOG] w83697hf/hg WDT driver - patch 7
[WATCHDOG] w83697hf/hg WDT driver - patch 6
...
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Noticed by Samium Gromoff but his patch got stale in flight ...
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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Fixing cpu-hotplug documentation as follows:
- moving confusing asterisk on additional_cpus descrition
- fixing some typos
- unifying indentation for source code and command line example
Signed-off-by: Satoru Takeuchi <takeuchi_satoru@jp.fujitsu.com>
Cc: Ashok Raj <ashok.raj@intel.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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Fix cut'n'paste typo - &a and &b are used in other examples, in this one
the doc uses &u and &v.
Signed-off-by: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
Acked-by: David Howells <dhowells@redhat.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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* git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/hwmon-2.6:
hwmon: Fix debug messages in w83781d
hwmon: Let w83781d and lm78 load again
w83627ehf: Fix the detection of fan5
k8temp: Documentation update
smsc47m1: List the SMSC LPC47M112 as supported
hwmon: Fix documentation typos
adm9240: Update Grant Coady's email address
w83791d: Fix unchecked return status
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* git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/pci-2.6: (22 commits)
PCI Hotplug: move pci_hotplug.h to include/linux/
change pci hotplug subsystem maintainer to Kristen
PCI: optionally sort device lists breadth-first
cpcihp_generic: prevent loading without "bridge" parameter
pci: Additional search functions
PCI: quirks: switch quirks code offender to use pci_get API
PCI: Update MSI-HOWTO.txt according to pci_msi_supported()
PCI: Improve pci_msi_supported() comments
PCI hotplug: ioremap balanced with iounmap
shpchp: remove unnecessary cmd_busy member from struct controller
shpchp: fix command completion check
pci: Stamp out pci_find_* usage in fakephp
PCI: fix pcie_portdrv_restore_config undefined without CONFIG_PM error
Fix DMA resource allocation in ACPIPnP
PCI: Turn pci_fixup_video into generic for embedded VGA
PCI: add ICH7/8 ACPI/GPIO io resource quirks
PCI: pcie-check-and-return-bus_register-errors fix
PCI: VIA IRQ quirk behaviour change
pciehp: Remove unnecessary check in pciehp_ctrl.c
pciehp - add missing locking
...
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* git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-2.6:
driver core: kmalloc() failure check in driver_probe_device
Driver core: bus: remove indentation level
Driver core: Don't ignore error returns from probing
Driver core: Don't leak 'old_class_name' in drivers/base/core.c::device_rename()
driver core fixes: sysfs_create_group() retval in topology.c
driver core fixes: device_create_file() retval check in dmapool.c
driver core fixes: device_add() cleanup on error
driver core fixes: bus_add_device() cleanup on error
driver core fixes: bus_add_attrs() retval check
driver core fixes: sysfs_create_link() retval check in class.c
sysfs: update obsolete comment in sysfs_update_file
sysfs: remove duplicated dput in sysfs_update_file
HOWTO: bug report addition
Fix dev_printk() is now GPL-only
Driver core: plug device probe memory leak
Documentation: feature-removal-schedule typo
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Update the documentation for the k8temp driver.
Signed-off-by: Rudolf Marek <r.marek@assembler.cz>
Signed-off-by: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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The SMSC LPC47M112 Super-I/O chip appears to be compatible with the
LPC47M10x and LPC47M13x as far as hardware monitoring is concerned.
The device ID is even the same, so it's really only a documentation
update.
Signed-off-by: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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Fix typos in hardware monitoring documentation.
Signed-off-by: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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Replace a bouncing email that I cannot recover from Mr Google.
Signed-off-by: Grant Coady <gcoady.lk@gmail.com>
Signed-off-by: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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I suspect that not many people is subscribed to the bugzilla mailing list,
not surprising since the URLs doesn't seem to be in the tree :)
After fixing my english, I wonder if the following patch could be applied...
Signed-off-by: Diego Calleja <diegocg@gmail.com>
Acked-by: Randy Dunlap <rdunlap@xenotime.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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Fix typo in newly added feature remove schedule item.
Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>
Cc: Kay Sievers <kay.sievers@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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Problem:
New Dell PowerEdge servers have 2 embedded ethernet ports, which are
labeled NIC1 and NIC2 on the chassis, in the BIOS setup screens, and
in the printed documentation. Assuming no other add-in ethernet ports
in the system, Linux 2.4 kernels name these eth0 and eth1
respectively. Many people have come to expect this naming. Linux 2.6
kernels name these eth1 and eth0 respectively (backwards from
expectations). I also have reports that various Sun and HP servers
have similar behavior.
Root cause:
Linux 2.4 kernels walk the pci_devices list, which happens to be
sorted in breadth-first order (or pcbios_find_device order on i386,
which most often is breadth-first also). 2.6 kernels have both the
pci_devices list and the pci_bus_type.klist_devices list, the latter
is what is walked at driver load time to match the pci_id tables; this
klist happens to be in depth-first order.
On systems where, for physical routing reasons, NIC1 appears on a
lower bus number than NIC2, but NIC2's bridge is discovered first in
the depth-first ordering, NIC2 will be discovered before NIC1. If the
list were sorted breadth-first, NIC1 would be discovered before NIC2.
A PowerEdge 1955 system has the following topology which easily
exhibits the difference between depth-first and breadth-first device
lists.
-[0000:00]-+-00.0 Intel Corporation 5000P Chipset Memory Controller Hub
+-02.0-[0000:03-08]--+-00.0-[0000:04-07]--+-00.0-[0000:05-06]----00.0-[0000:06]----00.0 Broadcom Corporation NetXtreme II BCM5708S Gigabit Ethernet (labeled NIC2, 2.4 kernel name eth1, 2.6 kernel name eth0)
+-1c.0-[0000:01-02]----00.0-[0000:02]----00.0 Broadcom Corporation NetXtreme II BCM5708S Gigabit Ethernet (labeled NIC1, 2.4 kernel name eth0, 2.6 kernel name eth1)
Other factors, such as device driver load order and the presence of
PCI slots at various points in the bus hierarchy further complicate
this problem; I'm not trying to solve those here, just restore the
device order, and thus basic behavior, that 2.4 kernels had.
Solution:
The solution can come in multiple steps.
Suggested fix #1: kernel
Patch below optionally sorts the two device lists into breadth-first
ordering to maintain compatibility with 2.4 kernels. It adds two new
command line options:
pci=bfsort
pci=nobfsort
to force the sort order, or not, as you wish. It also adds DMI checks
for the specific Dell systems which exhibit "backwards" ordering, to
make them "right".
Suggested fix #2: udev rules from userland
Many people also have the expectation that embedded NICs are always
discovered before add-in NICs (which this patch does not try to do).
Using the PCI IRQ Routing Table provided by system BIOS, it's easy to
determine which PCI devices are embedded, or if add-in, which PCI slot
they're in. I'm working on a tool that would allow udev to name
ethernet devices in ascending embedded, slot 1 .. slot N order,
subsort by PCI bus/dev/fn breadth-first. It'll be possible to use it
independent of udev as well for those distributions that don't use
udev in their installers.
Suggested fix #3: system board routing rules
One can constrain the system board layout to put NIC1 ahead of NIC2
regardless of breadth-first or depth-first discovery order. This adds
a significant level of complexity to board routing, and may not be
possible in all instances (witness the above systems from several
major manufacturers). I don't want to encourage this particular train
of thought too far, at the expense of not doing #1 or #2 above.
Feedback appreciated. Patch tested on a Dell PowerEdge 1955 blade
with 2.6.18.
You'll also note I took some liberty and temporarily break the klist
abstraction to simplify and speed up the sort algorithm. I think
that's both safe and appropriate in this instance.
Signed-off-by: Matt Domsch <Matt_Domsch@dell.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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Update MSI-HOWTO.txt according to pci_msi_supported().
Signed-off-by: Brice Goglin <brice@myri.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
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Adds support for dance pads to the xpad driver. Dance pads require the
d-pad to be mapped to four buttons instead of two axes, so that
combinations of up/down and left/right can be hit simultaneously.
Known dance pads are detected, and there is a module parameter added
to default unknown xpad devices to map the d-pad to buttons if this is
desired. (dpad_to_buttons). Minor modifications were made to port the
changes in the original patch to a newer kernel version.
This patch was originally from Dominic Cerquetti originally written
for kernel 2.6.11.4, with minor modifications (API changes for USB,
spelling fixes to the documentation added in the original patch) made
to apply to the current kernel. I have modified Dominic's original
patch per some suggestions from Dmitry Torokhov. (There was nothing
in the patch format description about multiple From: lines, so I
haven't added myself.)
[akpm@osdl.org: cleanups]
Signed-off-by: Adam Buchbinder <adam.buchbinder@gmail.com>
Acked-by: Dmitry Torokhov <dtor@mail.ru>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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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: (28 commits)
ACPI: check battery status on resume for un/plug events during sleep
ACPICA: Fix incorrect handling of PCI Express Root Bridge _HID
ACPI: asus_acpi: don't printk on writing garbage to proc files
ACPI: asus_acpi: fix proc files parsing
ACPI: SCI interrupt source override
ACPI: fix printk format warnings
ACPI: fix section for CPU init functions
ACPI: update comments in motherboard.c
ACPI: acpi_pci_link_set() can allocate with either GFP_ATOMIC or GFP_KERNEL
ACPI: fix potential OOPS in power driver with CONFIG_ACPI_DEBUG
ACPI: ibm_acpi: delete obsolete documentation
ACPI: created a dedicated workqueue for notify() execution
ACPI: Remove deferred execution from global lock acquire wakeup path
MSI S270 Laptop support: backlight, wlan, bluetooth states
ACPI: EC: export ec_transaction() for msi-laptop driver
ACPI: EC: Simplify acpi_hw_low_level*() with inb()/outb().
ACPI: EC: Unify poll and interrupt gpe handlers
ACPI: EC: Unify poll and interrupt mode transaction functions
ACPI: EC: Remove unused variables and duplicated code
ACPI: EC: Remove unnecessary delay added by previous transation patch.
...
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