compat: backport SDIO_CLASS_BT_AMP

This is needed by drivers/bluetooth/btsdio.c

Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>

compat: update compat_firmware_class.c

Refresh code based on recent version in linux-next.

Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>

compat: fix compiler warning

Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>

compat: move va_format to compat-2.6.36.h

This struct was introduced in kernel 2.6.36 and not 2.6.35.

Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>

compat: backport n_tty_ioctl_helper

This function is needed by some bluetooth drivers

Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>

compat: add br_port_exists() and ask for inclusion upstream

The br_port_exists() call is used internally on private bridge
code on net/bridge/ to check if a netdevice is a bridge port.
The way to check if a netdevice is a bridge port has changed
for 2.6.36 from checking the netdev->br_port pointer to
checking for a IFF_BRIDGE_PORT flag on the netdev->priv_flags.

Instead of requiring backport code to ifdef the checks lets
move the private br_port_exists() to a public header accessible
by drivers and consistantly use it to check for the bridge
port.

I'll submit a patch upstream to move br_port_exists() to a public
header so that we don't have to later even require a patch on
backported code. We'll see if it gets accepted though.

Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com>

compat: move struct va_format to 2.6.35 header

This was added as of the 2.6.35-rc1 kernel.

Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com>

compat: backport pcmcia_{read,write}_config byte from v2.6.36

Signed-off-by: Kshitij Kulshreshtha <kkhere.geo@gmail.com>

compat: define struct va_format introduced in v2.6.36

Signed-off-by: Kshitij Kulshreshtha <kkhere.geo@gmail.com>

compat: header <pcmcia/cs_types.h> was removed in v2.6.36

the header <pcmcia/cs.h> in versions < 2.6.36 requires types defined
in <pcmcia/cs_types.h> so include it first.

Signed-off-by: Kshitij Kulshreshtha <kkhere.geo@gmail.com>

compat: backport hex_to_bin first introduced in v2.6.35

Signed-off-by: Kshitij Kulshreshtha <kkhere.geo@gmail.com>

compat: fix build if CONFIG_PCCARD=y and CONFIG_PCMCIA=n

The includes are needed for pccard_loop_tuple.

Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>

compat: fix tracpoint building

trace/define_trace.h can be included more often and it have to.

This fixes some errors like this:
WARNING: "__tracepoint_iwlwifi_dev_rx" [/home/hauke/compat-wireless/compat-wireless-git/drivers/net/wireless/iwlwifi/iwlcore.ko] undefined!

Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>

compat: Fix panic caused by NULL pointer derefence in rtnl_fill_ifinfo

get stats netdev ops is blindy called for older kernels (< 2.6.29) and
so assigning a NULL pointer from netdev_attach_ops causes a NULL pointer
dereference.

By default, netdev alloc provides an internal stats reference. So fill
this only if ndo_get_stats is defined.

Signed-off-by: Rajkumar Manoharan <rmanoharan@atheros.com>

compat: backport skb_queue_splice_init

This is needed by iwmc3200wifi.

Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>

compat: backport lockdep_assert_held

Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>

compat: backport sdio_writeb_readb

This is needed by wl1251_sdio.c
Use sdio_readb instead of sdio_writeb_readb as long as sdio_writeb_readb was not realy backported.

Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>

compat: backport dma_set_coherent_mask

Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>

compat: use kernel pm_qos_params.h

Do not use pm_qos_params.h from compat-wireless if the kernel also
ships this file. In kernel 2.6.35 pm_qos_params.h changed and the in
kernel header file is needed.

Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>

compat: backport small functions and defines

Backport of some functions and defines needed by compat-wireless.

Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>

compat: move kparam_{block,unblock}_sysfs_write

kparam_block_sysfs_write and kparam_unblock_sysfs_write are not in
kernel 2.6.35, move them to backport from kernel 2.6.36.

Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>

compat: update bitops.h and wireless.h

copy files from linux-next next-20100604

Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>

compat: backport USHRT_MAX, SHRT_MAX and SHRT_MIN

This backports this patch:

Author: Alexey Dobriyan <adobriyan@gmail.com>
Date:   Mon May 24 14:33:03 2010 -0700

    kernel-wide: replace USHORT_MAX, SHORT_MAX and SHORT_MIN with USHRT_MAX, SHRT_MAX and SHRT_MIN

    - C99 knows about USHRT_MAX/SHRT_MAX/SHRT_MIN, not
      USHORT_MAX/SHORT_MAX/SHORT_MIN.

    - Make SHRT_MIN of type s16, not int, for consistency.

    [akpm@linux-foundation.org: fix drivers/dma/timb_dma.c]
    [akpm@linux-foundation.org: fix security/keys/keyring.c]
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Acked-by: WANG Cong <xiyou.wangcong@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com>

compat: create the udev directories for compat_firmware file

In case the directories are non existant create them.

Reported-by: Jaroslav Fojtik <jafojtik@seznam.cz>
Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com>

Remove the stupid SET_NETDEVOP

Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com>

Fix the syntax for the defines passed for compat

Spaces would not have worked without this.

Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com>

Add a COMPAT_PROJECT tag

This will be used to identify the backport project
only during initialization, there is no associated
module parameter for this as there is no need for it.

Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com>

Add the COMPAT_BASE_TREE and COMPAT_BASE_TREE_VERSION

These are to be used by projects using this tree for their
own backport projects.

Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com>

Modify the compat print

This uses the COMPAT_VERSION on the print

Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com>

compat: add compat_version read-only module parameter

This will allow you to supply a version tag for the
backport you use. Compat-wireless will re-use this and
give it its own value based on the kernel we backport
from. It will use either the linux-next git describe
or the stable kernel git describe. Any delta on top of
the git tree should also be reflected then in case of
custom private trees/releases.

Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com>

compat: move usb_{alloc,free}_coherent

usb_alloc_coherent and usb_free_coherent were introduced in kernel 2.6.34.

Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>

compat: move kparam_{block,unblock}_sysfs_write

kparam_block_sysfs_write and kparam_unblock_sysfs_write will introduced
in kernel 2.6.35 and not 2.6.33.

Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>

compat: backport eth_change_mtu and eth_validate_addr

Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>

compat: add the ndo_select_queue for netdev_attach_ops()

Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com>

compat: add the rest of the missing netdev_attach_ops()

If you don't see your net_device_ops implemented on
netdev_attach_ops() then you are shit out of luck and
you must do the nasty ifdef magic.

Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com>

compat: add new way to backport the usage of net_device_ops

We tend to #ifdef code that uses the new net_device_ops
on kernels older than 2.6.29. This tends to create a burden
on the upkeeping of the hunks. We can minimize our work by
instead definining a new netdev_attach_ops() which will do
our backport work for the older kernels and simply attach
the ops for newer kernels.

This should simplify backporting of network drivers
considerably.

Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com>

compat: backport usb_alloc_coherent() and usb_free_coherent()

Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>

compat: backport sk_sleep

Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>

compat: update compat_firmware_class.c to new version

Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>

compat: fix uevent_suppress on 2.6.29 or older kernels

Missing uevent_suppress is causing two uevents instead of one, which is
confusing udev and sometimes causing firmware load to fail due to race
condition, so let's add it.

Signed-off-by: Grazvydas Ignotas <notasas@gmail.com>

compat: backport convert multicast list to list_head.

Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>

compat: Add linux/version.h include before using it.

This causes problems if theses header files are used without including
linux/compat-2.6.h

Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>

compat: Add definitions needed for libertas sdio driver.

Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>

compat: add rcu_dereference_check

Signed-off-by: Felix Fietkau <nbd@openwrt.org>

compat: add net/net_namespace.h stub for Linux 2.6.23 and older

This obviates a good part of 06-header-changes.patch in compat-wireless.

Signed-off-by: Pavel Roskin <proski@gnu.org>

compat: add stub headers linux/tracepoint.h and trace/define_trace.h

This should make 13-trace.patch in compat-wireless unnecessary.

Signed-off-by: Pavel Roskin <proski@gnu.org>

compat: add device_create() implementation for Linux 2.6.26 and older

This should make 25-device_create.patch in compat-wireless unnecessary.

Signed-off-by: Pavel Roskin <proski@gnu.org>

compat: Backport clamp

This is needed by the ath5k driver.

Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>

compat: add qdisc_all_tx_empty for Linux 2.6.26 and older

compat: add compat-2.6.35.h and IW_HANDLER

compat: add compat-2.6.35.h and IW_HANDLER

Signed-off-by: Pavel Roskin <proski@gnu.org>

compat: backport PCMCIA_DEVICE_PROD_ID3

Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>

compat: update bitops.h

Copy header from recent linux-next

Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>

compat: backport device_{lock,trylock,unlock}

This fixes build of ar9170.

CC: Gus Wirth <gwirth79@gmail.com>
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>

compat: fix some build problems with kernel 2.6.24

Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>

compat: define KEY_RFKILL, which appeared in Linux 2.6.33

It is used in net/rfkill/input.c

Signed-off-by: Pavel Roskin <proski@gnu.org>

compat: backport some more of the netdev debug printk

Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>

compat: move debugfs_remove_recursive() to compat-2.6.27

debugfs_remove_recursive() appeared in Linux 2.6.27, so it should be in
compat-2.6.27, not in compat-2.6.26.  Don't compile it if
CONFIG_DEBUG_FS is disabled.

Signed-off-by: Pavel Roskin <proski@gnu.org>

compat: backport debugfs_remove_recursive()

This avoids using the internal globals by the internal
kernel debugfs implementation.

Signed-off-by: Pavel Roskin <proski@gnu.org>
Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com>

compat: backport for ARM dma_sync_single_range_*() helpers

This backports for ARM dma_sync_single_range_for_cpu()
and dma_sync_single_range_for_device() needed by the
b44 Ethernet driver.

Signed-off-by: Pavel Roskin <proski@gnu.org>
Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com>

compat: backport some netdevice.h defs

Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>

compat: backport genlmsg_unicast

Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>

compat: fix build on arm

ARM does not provided the include file asm/compat.h. Use linux/compat.h
instead, it includes asm/compat.h if needed.
This patch is from OpenWRT:
https://dev.openwrt.org/browser/trunk/package/mac80211/patches/020-fix_compat_h.patch?rev=19063

Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>

compat: fix build with CONFIG_USB=m

The usb compat code was not build if usb was build as module in kernel.

Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>

Install udev rules and scripts needed for compat_firmware_class

If you are a distribution maintainer and your distribution has
lsb_release and if you disagree with the way we handle the
uknown case just go ahead and add a case for yourself in
scripts/compat_firmware_install along with a directory and
your own files.

Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com>

Fix build with CONFIG_USB disabled

Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com>

Fix build with CONFIG_PCMCIA disabled

Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com>

Only build compat_firmware_class if CONFIG_FW_LOADER was enabled

This prevents bothering with building compat_firmware_class if your
kernel lacks CONFIG_FW_LOADER support.

Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com>

compat: fix firmware class compile on linux 2.6.32

The firmware class API change happened after 2.6.32, so move the compat
code to the 2.6.33 header file.

Signed-off-by: Felix Fietkau <nbd@openwrt.org>

Fix loading of compat_firmware_class due to class name conflict

This fixes this warning:

[  869.248771] ------------[ cut here ]------------
[  869.248779] WARNING: at fs/sysfs/dir.c:463 sysfs_add_one+0x51/0x60()
[  869.248784] sysfs: duplicate filename 'firmware' can not be created
[  869.248788] Modules linked in: compat_firmware_class(+) aes_generic binfmt_misc ppdev i915 drm snd_hda_intel snd_pcm_oss snd_mixer_oss snd_pcm snd_page_alloc snd_hwdep snd_seq_dummy snd_seq_oss snd_seq_midi rfcomm snd_rawmidi sco arc4 snd_seq_midi_event bridge stp snd_seq bnep mac80211 snd_timer pcmcia l2cap ath snd_seq_device btusb iptable_filter yenta_socket bluetooth cfg80211 psmouse snd thinkpad_acpi rfkill_backport ip_tables rsrc_nonstatic video serio_raw compat soundcore output x_tables nvram pcmcia_core led_class joydev lp parport usbhid ohci1394 ieee1394 e1000e intel_agp [last unloaded: ath5k]
[  869.248885] Pid: 6096, comm: modprobe Not tainted 2.6.27.41 #1
[  869.248890]
[  869.248892] Call Trace:
[  869.248902]  [<ffffffff8024cf18>] warn_slowpath+0x98/0xd0
[  869.248912]  [<ffffffff803cf518>] ? idr_get_empty_slot+0x108/0x2c0
[  869.248920]  [<ffffffff803cf780>] ? ida_get_new_above+0xb0/0x220
[  869.248927]  [<ffffffff80340559>] ? sysfs_ilookup_test+0x9/0x20
[  869.248934]  [<ffffffff802f8df4>] ? find_inode+0x54/0xa0
[  869.248940]  [<ffffffff80340550>] ? sysfs_ilookup_test+0x0/0x20
[  869.248948]  [<ffffffff802f8479>] ? __iget+0x9/0x70
[  869.248954]  [<ffffffff80340865>] ? sysfs_find_dirent+0x35/0x50
[  869.248961]  [<ffffffff80341811>] sysfs_add_one+0x51/0x60
[  869.248967]  [<ffffffff80341888>] create_dir+0x68/0xb0
[  869.248975]  [<ffffffff80341909>] sysfs_create_dir+0x39/0x50
[  869.248982]  [<ffffffff803d05ba>] ? kobject_get+0x1a/0x30
[  869.248989]  [<ffffffff803d0716>] kobject_add_internal+0xb6/0x200
[  869.248998]  [<ffffffff803d088f>] kset_register+0x2f/0x60
[  869.249009]  [<ffffffff8046869f>] __class_register+0xcf/0x1b0
[  869.249020]  [<ffffffffa000b000>] ? firmware_class_init+0x0/0x7e [compat_firmware_class]
[  869.249029]  [<ffffffffa000b021>] firmware_class_init+0x21/0x7e [compat_firmware_class]
[  869.249038]  [<ffffffff8020a041>] do_one_initcall+0x41/0x170
[  869.249047]  [<ffffffff80269411>] ? __blocking_notifier_call_chain+0x21/0x80
[  869.249059]  [<ffffffff8027974f>] sys_init_module+0xaf/0x1e0
[  869.249068]  [<ffffffff802116fa>] system_call_fastpath+0x16/0x1b
[  869.249072]
[  869.249075] ---[ end trace c1a363c5ede5a470 ]---
[  869.249082] kobject_add_internal failed for firmware with -EEXIST, don't try to register things with the same name in the same directory.
[  869.249092] Pid: 6096, comm: modprobe Tainted: G        W 2.6.27.41 #1
[  869.249096]
[  869.249097] Call Trace:
[  869.249104]  [<ffffffff803d07bd>] kobject_add_internal+0x15d/0x200
[  869.249112]  [<ffffffff803d088f>] kset_register+0x2f/0x60
[  869.249120]  [<ffffffff8046869f>] __class_register+0xcf/0x1b0
[  869.249130]  [<ffffffffa000b000>] ? firmware_class_init+0x0/0x7e [compat_firmware_class]
[  869.249139]  [<ffffffffa000b021>] firmware_class_init+0x21/0x7e [compat_firmware_class]
[  869.249146]  [<ffffffff8020a041>] do_one_initcall+0x41/0x170
[  869.249153]  [<ffffffff80269411>] ? __blocking_notifier_call_chain+0x21/0x80
[  869.249163]  [<ffffffff8027974f>] sys_init_module+0xaf/0x1e0
[  869.249170]  [<ffffffff802116fa>] system_call_fastpath+0x16/0x1b
[  869.249174]
[  869.249178] firmware_class_init: class_register failed

Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com>

Export CONFIG_COMPAT_FIRMWARE_CLASS

Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com>

Enable 2.6.33 compatibility

Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com>

Enable the compat_firmware_class to be built only on < 2.6.32

Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com>

Backport the new firmware_class from > 2.6.33 down to 2.6.23

My main concern with this backport was the usage of the
core driver "base.h" but as it turns out firmware_class doesn't
even need it. This allowed the backport to go through.

This new backport allows drivers which use the new modified firmware
API request_firmware_nowait() on older kernels. You should not
need to chagne the your request_firmware_nowait() calls at all;
the compat-2.6.32.h header ensures that your calls get mapped
to compat_request_firmware_nowait()

Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com>

Update for next-20100113

Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com>

compat: build pccard and pcmcia condituinaly

If the kernel does not include pcmcia, compat.o should not relay on
methods provided by it.

Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>

compat: autoconf.h moved from linux/ to generated/ with kernel 2.6.33

Changed the headers, because autoconf.h moved from linux/ into
generated/

All compat-2.6.XX.h files are included by compat-2.6.h, so only
compat-2.6.h needs to include autoconf.h. There is no situation known to
me where you want to include any compat-2.6.XX.h file directly.

This fixes build with kernel 2.6.33, without it complains about a
missing import:
/include/linux/compat-2.6.h:4:28: error: linux/autoconf.h: No such file or directory

Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>

compat: fix two return types

This fixes a build error introduced in 7d2b68df6301937a8299bca8bef135ae951b569c:
/include/linux/compat-2.6.25.h:172: error: two or more data types in declaration specifiers

Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>

Add notes about why debugfs_remove_recursive() cannot be backported

You should just disable debugging for older kernels if this is used.

Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com>

Add module load print to know where we backported from

For stable kernels this will be more important. I'll soon start
a branch based on new kernel releases so if anyone wants to
base their code only up to a specific point release they can use
that.

Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com>

Fix dev_set_name() for kernel 2.6.23

Signed-off-by: Senthil Balasubramanian <senthilkumar@atheros.com>

Fix cfg80211 panic caused by backported pm-qos support

pm-qos needs to be deregistered upon module unload.

Signed-off-by: Senthil Balasubramanian <senthilkumar@atheros.com>
Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com>

Backport DEFINE_PCI_DEVICE_TABLE for kernels < 2.6.25

Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com>

Adds __dev_addr_delete() and __dev_addr_add() for 2.6.22

Not sure how to port this yet though:

  CC [M]  /home/mcgrof/compat/compat/compat-2.6.32.o
/home/mcgrof/compat/compat/compat-2.6.32.c: In function ‘__dev_addr_sync’:
/home/mcgrof/compat/compat/compat-2.6.32.c:84: error: ‘struct dev_mc_list’ has no member named ‘da_synced’
/home/mcgrof/compat/compat/compat-2.6.32.c:89: error: ‘struct dev_mc_list’ has no member named ‘da_synced’
/home/mcgrof/compat/compat/compat-2.6.32.c: In function ‘__dev_addr_unsync’:
/home/mcgrof/compat/compat/compat-2.6.32.c:111: error: ‘struct dev_mc_list’ has no member named ‘da_synced’
/home/mcgrof/compat/compat/compat-2.6.32.c:114: error: ‘struct dev_mc_list’ has no member named ‘da_synced’
make[3]: *** [/home/mcgrof/compat/compat/compat-2.6.32.o] Error 1

Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com>

Add initial 2.6.22 support

Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com>

Synch up pm-qos implementation completely with linux-next next-20100111

This should be easier to keep track of and backport now
for older kernels. As we move along each new kernel release
will get a branch and have its own pm-qos implementation,
the master tag will always keep backporting the latest
bleedinge edge (from linux-next).

Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com>

Move pm-qos backport comments to 2.6.25 compat header

We'll be synching the pm-qos implementation to match upstream
pm-qos on linux-next.

Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com>

Extract pm-qos code into compat/pm_qos_params.c

This should make it easier to synch with later
version of kernel/pm_qos_params.c

Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com>

Updates the pm-qos array indexes to match upstream

This style is used now upstream for the pm-qos object array
declaration.

Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com>

Add the new system bus frequency pm-qos object for older kernels

This adds the new system_bus_freq_pm_qos for older kernels.
This also fixes a compile warning on possible array out of
bounds access on pm-qos, this was due to the fact that the
pm-qos implementation we had on code was out of synch with
the header we were copying over. This synchs up the array
to what is in linux-next as of linux-next tag next-20100111

Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com>

Only define BITS_TO_LONGS if not defined

This removes this nagging complaint on older kernels:

  CC [M]  /home/mcgrof/compat/compat/compat-2.6.32.o
In file included from include/asm-i386/cpufeature.h:11,
                 from include/asm/cpufeature.h:10,
                 from include/asm/alternative.h:43,
                 from include/asm/atomic.h:4,
                 from /home/mcgrof/compat/include/linux/compat-2.6.24.h:10,
                 from /home/mcgrof/compat/include/linux/compat-2.6.h:15,
                 from <command-line>:0:
/home/mcgrof/compat/include/linux/bitops.h:10:1: warning: "BITS_TO_LONGS" redefined
In file included from include/asm/alternative.h:6,
                 from include/asm/atomic.h:4,
                 from /home/mcgrof/compat/include/linux/compat-2.6.24.h:10,
                 from /home/mcgrof/compat/include/linux/compat-2.6.h:15,
                 from <command-line>:0:
include/linux/types.h:6:1: warning: this is the location of the previous definition
In file included from include/asm-i386/cpufeature.h:11,
                 from include/asm/cpufeature.h:10,
                 from include/asm/alternative.h:43,
                 from include/asm/atomic.h:4,
                 from /home/mcgrof/compat/include/linux/compat-2.6.24.h:10,
                 from /home/mcgrof/compat/include/linux/compat-2.6.h:15,
                 from <command-line>:0:

Note that this means we'll have to keep include/linux/bitops.h up to
date on our tree now. Shouldn't be an issue but just worth noting.

Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com>

Add initial backport support for network namespaces

We simply declare the overly used init_net sprinkled all over
the kernel, and declare its. All other code should that uses
network namespaces should be ifdef'd for now as well as
inclusion of net/net_namespace.h as we do not backport
the network namespace implemetnation at all, we simply
try to nullify its effect.

Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com>

Add DMA_BIT_MASK() for older kernels

Old kernels do not have this declared.

Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com>

Add missing input key definitions

Newer rfkill implementations makes use of this. rfkill
for newer kernels has been backported for older kernels
through compat-wireless. Maybe we should bring that in
here?

Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com>

Copy over a few headers from the latest kernel

These header files are used regularly by new Linux driver.
Instead of backporting those headers just copy the headers
over. This is typically not recommended unless you know
what you are doing. In this case we do -- we ensure structs
don't change for usage of certain subystems and when they do
change we port the entire subsystem ourselves.

In this case we only copy over bit operations, unaligned helpers.
The only subystem related header we copy over is the wireless header
for which we use to backport the entire 802.11 subsystem using
compat-wireless, and compat-wireless uses this compat module.

We'll synch these on each kernel release.

Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com>

Add missing headers for 2.6.24

Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com>

Skip MMC/SDIO backport for kernels <= 2.6.23

This allows compilation of compat for 2.6.23 for builds
that do not require MMC/SDIO. Anyone interested in MMC/SDIO
backport support should look to see if its possible to
backport/add MMC/SDIO support to older kernels. That's
likeley a project on its own though, not sure.

Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com>

Fix compilation for 2.6.23 due to missing declaration of sg_init_table()

Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com>

Remove duplicate __dev_addr_delete()

This is already implemented on compat-2.6.32.c

Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com>

include arp.h, required for 2.6.23

Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com>

Simple compile warning fix for pm-qos

return 0 on newer kernels.

Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com>