wl12xx: send all pending packets on channel change

There is a race condition between wl1271_tx_work() and the
channel switch, so make sure all the pending packets are
being sent before switching channel.

Signed-off-by: Eliad Peller <eliad@wizery.com>
Signed-off-by: Luciano Coelho <coelho@ti.com>

wl12xx: remove P2P ie from probe response

wl12xx uses a single probe response template, regardless of
the probe request.
However, the P2P spec forbids including the p2p ie in some
cases (e.g. the probe request didn't include the p2p ie).

The fw responds only to probe requests that don't
include the p2p ie, and passes up probe requests that
include them (the supplicant will answer them).

Thus, strip the p2p ie from the probe response template.

Signed-off-by: Eliad Peller <eliad@wizery.com>
Signed-off-by: Luciano Coelho <coelho@ti.com>

wl12xx: remove TIM ie from probe response

wl12xx uses the beacon as the probe response template.
However, the beacon includes a TIM ie, which shouldn't
exist in the probe response.

Delete it from the skb before configuring the probe
response template.

Signed-off-by: Eliad Peller <eliad@wizery.com>
Signed-off-by: Luciano Coelho <coelho@ti.com>

wl12xx: Include OFDM rates in IBSS mode

We were including only 11b rates in IBSS mode.  This patch adds OFDM
rates.

[Rephrased commit log and removed one unnecessary comment. -- Luca]

Signed-off-by: Shahar Levi <shahar_levi@ti.com>
Signed-off-by: Luciano Coelho <coelho@ti.com>

wl12xx: fix sdio_test module functionality

Due to some changes in PM in recent kernels, the sdio_test module has
been broken for a while.  This patch fixes the code that powers the
card on and off.

Also made some small indentation fixes in the Makefile.

[Rephrased commit log and removed the change in the FW name, since
it's done in another patch. -- Luca]

Signed-off-by: Shahar Levi <shahar_levi@ti.com>
Signed-off-by: Luciano Coelho <coelho@ti.com>

wl12xx: fix forced passive scans

We were using incorrect max and min dwell times during forced passive
scans because we were still using the active scan states to scan
(passively) the channels that were not marked as passive.

Instead of doing passive scans in active states, we now skip active
states and scan for all channels in passive states.

Cc: <stable@kernel.org> # 2.6.36+
Signed-off-by: Luciano Coelho <coelho@ti.com>

nfc: NFC_WILINK depends on NFC_NCI

nwcwilink.c uses nci_*() interfaces, so it should depend on
NFC_NCI.

Fixes these build errors:
ERROR: "nci_register_device" [drivers/nfc/nfcwilink.ko] undefined!
ERROR: "nci_allocate_device" [drivers/nfc/nfcwilink.ko] undefined!
ERROR: "nci_recv_frame" [drivers/nfc/nfcwilink.ko] undefined!
ERROR: "nci_free_device" [drivers/nfc/nfcwilink.ko] undefined!
ERROR: "nci_unregister_device" [drivers/nfc/nfcwilink.ko] undefined!

Signed-off-by: Randy Dunlap <rdunlap@xenotime.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

mwifiex: remove unneeded NULL check

We dereference "rate" on the lines before so the checks here are too
late to help.  This function is only called from
mwifiex_dump_station_info() and "rate" is always a non-NULL pointer
so the check can be removed.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Acked-by: Bing Zhao <bzhao@marvell.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

mwifiex: add a kfree() to an error path

We're not likely to hit this small memory leak, but lets fix it
anyway to keep the static checkers happy.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Acked-by: Bing Zhao <bzhao@marvell.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

iwlagn: remove duplicate list init

iwl_trans_rx_alloc is only called from iwl_rx_init, so no need
to init the lists twice.

Signed-off-by: Amit Beka <amit.beka@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

iwlagn: pending frames musn't be incremented if agg is on

During my works on the transport layer I removed code that updated
a local variable (is_agg) that is needed to keep the pending_frames
count up to date. Fix this.

Also, there should be no way to have a packet with TX_CTL_AMPDU set
while the internal aggregation state machine is not in AGG_ON state.
Add a WARN_ON to ensure that.

Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

iwlagn: remove uneeded declaration

This has been removed but the declaration hasn't.

Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

iwlagn: simplify the iwl_device_cmd layout

This simplifies both the transport layer and the upper layer.

Kill the union in the device command, which avoids the funny syntax
we had: cmd->cmd.payload.

Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

iwlagn: remove the callback in host commands

Before this patch, the upper layer could register a callback for each
host command. This mechanism allowed the upper layer to have
different callbacks for the same command ID. In fact, it wasn't used
and the rx_handlers is enough: same callback for all the command with
a specific command ID.

The iwl_send_add_station needs the access the command that was sent
while handling the response (regardless if the command was sent in
SYNC or ASYNC mode). So now, all the handlers receive the host
command that was sent. This implies a change in the handler signature.

Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

iwlagn: split remain-on-channel

If we're associated and want to do P2P at the same
time, the scan for remain-on-channel is currently
limited to 80ms because of the way the device will
behave in that case. Instead of doing that, split
up the dwell times into little pieces. It will not
actually be a single big dwell time then, but will
be close enough. This improves robustness of P2P
in such scenarios.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

iwlagn: remove common station priv

Since the driver split there's no more need for
shared/non-shared private station data so remove
struct iwl_station_priv_common entirely.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

iwlagn: move scan code to scan file

Since the driver split there's no longer a need
to have the scan code scattered across multiple
files, so move it all back to iwl-scan.c

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Wey-Yi Guy <wey-yi.guy@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

mac80211: notify peer when shutting down peer link

Send a Mesh Peering Close frame when we deactivate a mesh peer link.

Signed-off-by: Thomas Pedersen <thomas@cozybit.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

mac80211: fix AP/VLAN PS buffer race

When an AP interface is removed without the
AP/VLAN interfaces having been removed before
already, the AP-VLAN interface might still
have sleeping stations and buffer multicast
frames which will happen on the AP interface.
Thus, we need to remove AP/VLAN interfaces
before purging buffered broadcast frames.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

rtlwifi: Combine instances of RTL_HAL_IS_CCK_RATE macros.

Three drivers, rtl8192ce, rtl8192cu and rtl8192de, use the same macro
to check if a particular rate is in the CCK set. This common code is
relocated to a common header file. A distinct macro used by rtl8192se
with the same name is renamed.

Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

rtlwifi: rtl8192de: Change modinfo messages

The various modparam messages are difficult to understand.

Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

rtlwifi: rtl8192se: Change modinfo messages

The various modparam messages are difficult to understand.

Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

rtlwifi: rtl8192ce: Change modinfo messages

The various modparam messages are difficult to understand.

Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

ath9k: Store noise immunity values across scanning

CCK/OFDM noise immunilty values are always reset to defaults
during bgscan. This could affect the link quality and
performance when the STA is associated in a noisy channel.
So do not override the learned values across the scanning.

Signed-off-by: Rajkumar Manoharan <rmanohar@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

NFC: driver for TI shared transport

Signed-off-by: Ilan Elias <ilane@ti.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

NFC: basic NCI protocol implementation

The NFC Controller Interface (NCI) is a standard
communication protocol between an NFC Controller (NFCC)
and a Device Host (DH), defined by the NFC Forum.

Signed-off-by: Ilan Elias <ilane@ti.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

NFC: move nfc.h from include/net to include/net/nfc

The file nfc.h was moved from include/net to include/net/nfc,
since new NFC header files will be added to include/net/nfc.

Signed-off-by: Ilan Elias <ilane@ti.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

NFC: Add dev_up and dev_down control operations

Add 2 new nfc control operations:
dev_up to turn on the nfc device
dev_down to turn off the nfc device

Signed-off-by: Ilan Elias <ilane@ti.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

mac80211: fix indentation

Signed-off-by: Alexander Simon <an.alexsimon@googlemail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

wireless: Do not allow disabled channel in scan request

cfg80211_conn_scan allows disabled channels at scan request.
Hence probe request was seen at the disabled one. This patch
ensures that disabled channel never be added into the scan
request's channel list.

Acked-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: Rajkumar Manoharan <rmanohar@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

Merge branch 'master' of git://git.infradead.org/users/linville/wireless

Conflicts:
drivers/net/wireless/iwlwifi/iwl-pci.c
drivers/net/wireless/iwlwifi/iwl-trans-pcie-tx.c
drivers/net/wireless/rt2x00/rt2800usb.c
drivers/net/wireless/wl12xx/main.c

cfg80211/nl80211: Add PMKSA caching candidate event

When the driver (or most likely firmware) decides which AP to use
for roaming based on internal scan result processing, user space
needs to be notified of PMKSA caching candidates to allow RSN
pre-authentication to be used.

Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

b43: LCN-PHY: finish sense setup

Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

rfkill: properly assign a boolean type

Signed-off-by: Mohammed Shafi Shajakhan <mohammed@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

cfg80211: validate IBSS BSSID

The IBSS BSSID is never validated, so an
invalid one might end up being used. Fix
this by rejecting invalid configuration.

Reported-by: Marek Lindner <lindner_marek@yahoo.de>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

b43: LCN-PHY: add more init tweaks

Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

b43: LCN-PHY: init TX power control

Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

b43: LCN-PHY: implement SPUR avoidance mode

Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

b43: LCN-PHY: set TX filters

Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

b43: LCN-PHY: tweaks for channel switching

They have been taken from brcmsmac, add Broadcom's copyright.

Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

bcma: cc: export more control functions

Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

mac80211: Fix regression on queue stop during 2040 bss change

The commit "mac80211: stop tx before doing hw config and
rate update" stops the tx queue and call drv_flush so frequently
whenever a beacon got received with 11n htcap. This leads to
massive "Failed to stop TX DMA" logspam on embedded hw. So the
queue stop and flush should be called if and only if there is a
change in the channel type.

Reported-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: Rajkumar Manoharan <rmanohar@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

iwlagn: signedness bug

re-apply the unsigned shorts bug fixed by Dan Carpenter but get lost
after the file move.

Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

iwlagn: fix stack corruption for temperature offset v2

Same stack corruption problem as temperature offset

Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

iwlagn: do not use interruptible waits

Since the dawn of its time, iwlwifi has used
interruptible waits to wait for synchronous
commands and firmware loading.

This leads to "interesting" bugs, because it
can't actually handle the interruptions; for
example when a command sending is interrupted
it will assume the command completed fully,
and then leave it pending, which leads to all
kinds of trouble when the command finishes
later.

Since there's no easy way to gracefully deal
with interruptions, fix the driver to not use
interruptible waits.

This at least fixes the error
iwlagn 0000:02:00.0: Error: Response NULL in  'REPLY_SCAN_ABORT_CMD'

I have seen in P2P testing, but it is likely
that there are other errors caused by this.

Cc: Stanislaw Gruszka <sgruszka@redhat.com>
Cc: stable@kernel.org [2.6.24+]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

iwlagn: use iwl_eeprom_calib_hdr structure

For retrieve calibration hdr related information, instead of using structure in
one place and #define in other place, unify the method to use data structure.

Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

iwlagn: add support for v2 of temperature offset calibration

For 2000 series of NICs, version 2 of temperature offset calibration
should be used.

Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

iwlagn: remove drvdata support from bus layer

Since the removal of the sysfs files, it is no
longer necessary to have upper layers control
the drvdata, so let the PCI driver have it for
itself completely.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

iwlagn: move sysfs files to debugfs

The debug_level and temperature files should be in
debugfs, the txpower file is completely unneeded
since TX power can be set with iw/iwconfig.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

iwlagn: remove unused function declarations

iwl_suspend and iwl_resume don't exist.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

iwlagn: rename iwl-pci.h to iwl-cfg.h

There's nothing PCI(E) specific in this file.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

iwlagn: clean up PM code

The transport callbacks might as well be undefined
when CONFIG_PM_SLEEP is not set, so ifdef all of
it out and make everything available for PM_SLEEP
only.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

iwlagn: Makefile whitespace cleanup

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

iwlagn: generically provide iwl_trans_send_cmd_pdu

There's no need to have the transport layer have a
callback for iwl_trans_send_cmd_pdu() since it is
just a generic wrapper around iwl_trans_send_cmd().

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

iwlagn: move PCI-E transport files

Move all the PCI-E specific transport files to
be iwl-trans-pcie*; specifically iwl-trans.c
which is really iwl-trans-pcie.c.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

iwlagn: merge eeprom access into single file

After driver split and no need to support legacy devices, there is no reason
we need to separate the NVM access into different files, merge those.

Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

iwlagn: provide data after WARN_ON

From time to time, we hit a WARN_ON in iwl_mac_remove_interface.
This basically means that we got out of sync with mac80211: the vif
we hold differs from the vif 80211 passes as parameter. Try to get
some data that will help to debug this.

Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

iwlagn: replace beacon_time_fsf_bits variable with #define

All devices use the same value for beacon_time_tsf_bits.  Use the #define

Signed-off-by: Don Fry <donald.h.fry@intel.com>
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

iwlagn: simplify chain_noise_num_beacons indirection

chain_noise_num_beacons is set and never changes.  Use the #define
rather than 3 levels of indirection.

Signed-off-by: Don Fry <donald.h.fry@intel.com>
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

iwlagn: fix modinfo display for 135 ucode.

The modinfo report for 135 ucode is iwlwifi-135-IWL135_UCODE_API_MAX.ucode
Change to show the value of the define:  iwlwifi-135-6.ucode

Signed-off-by: Don Fry <donald.h.fry@intel.com>
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

iwlagn: New SKU for 6005 SFF

Adding another SKU for 6005 series devices.

Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

iwlagn: Convert kzalloc to kcalloc

Convert kzalloc to kcalloc, coalesce multiple lines too.

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

iwlagn: add documentation to the transport layer

and do a few clean up fixes on the way

Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

iwlagn: document the bus layer API

Add documentation to the bus layer API - iwl-bus.h

Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

iwlagn: use enum iwl_rxon_context_id instead of u8

enum iwl_rxon_context_id is the right type to use when we need a
rxon_context_id.

Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

iwlagn: move iwl_stop / wake_queue to the upper layer

Add a wrapper in the upper layer to call the mac80211's function.
This allows not to have the transport layer call mac80211 directly.

Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

iwlagn: free the Tx cmd when a non empty Tx queue is freed

When a non-empty Tx queueis freed, the buffer it contains must be
freed too. Since the Tx cmd are now allocated from a pool, the Tx
cmd must be freed too.

This patch avoids to destroy a non-empty pool of Tx cmd.

Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

iwlagn: unmap cmd queue's tfds as BIDI

If the driver is unloaded while there is still a host command in
flight, its tfd will be freed by iwl_tx_queue_free.
This function is called for both types of queues: Tx queues and cmd
queue. This didn't take in count the fact that in Tx queues, tfds are
mapped as TO_DEVICE (besides the first TB), whereas in cmd queue, all
TBs are mapped as BIDI.

Hence, tx_queue_free unmapped the second (and higher) TB of each tfd
in the cmd queue as TO_DEVICE, whereas they must be freed as BIDI.
This means that if a multi TFD is in flight while we unload the
driver (which is quite unlikely but can happen), we will get the
warning below.

This patch fixes this.

[  445.234060] ------------[ cut here ]------------
[  445.236273] WARNING: at lib/dma-debug.c:861 check_unmap+0x337/0x780()
[  445.236654] iwlagn 0000:02:00.0: DMA-API: device driver frees DMA memory with different direction [device address=0x0000000126950540] [size=8 bytes] [mapped with DMA_BIDIRECTIONAL] [unmapped with DMA_TO_DEVICE]
[  445.236654] Modules linked in: ...
[  445.236654] Pid: 1415, comm: modprobe Not tainted 3.1.0-rc4-wl-65912-g5215ff1-dirty #79
[  445.236654] Call Trace:
[  445.236654]  [<ffffffff81043a51>] warn_slowpath_common+0x71/0xa0
[  445.236654]  [<ffffffff81043b37>] warn_slowpath_fmt+0x47/0x50
[  445.236654]  [<ffffffff8121e687>] check_unmap+0x337/0x780
[  445.236654]  [<ffffffff810e9136>] ? free_one_page+0x156/0x320
[  445.236654]  [<ffffffff8121ec5a>] debug_dma_unmap_page+0x5a/0x60
[  445.236654]  [<ffffffffa021d701>] iwlagn_unmap_tfd.isra.11+0x121/0x1c0 [iwlagn]
[  445.236654]  [<ffffffffa021ddf2>] iwlagn_txq_free_tfd+0x42/0x70 [iwlagn]
[  445.236654]  [<ffffffffa02121de>] iwl_tx_queue_unmap+0x4e/0x70 [iwlagn]
[  445.236654]  [<ffffffffa0212fad>] iwl_trans_pcie_tx_free+0x10d/0x440 [iwlagn]
[  445.236654]  [<ffffffff81064959>] ? destroy_workqueue+0xb9/0x1e0
[  445.236654]  [<ffffffffa021330a>] iwl_trans_pcie_free+0x2a/0x2c0 [iwlagn]
[  445.236654]  [<ffffffffa022f4f2>] iwl_remove+0x149/0x17e [iwlagn]
[  445.236654]  [<ffffffffa022f546>] iwl_pci_remove+0x1f/0x65 [iwlagn]
[  445.236654]  [<ffffffff81228337>] pci_device_remove+0x47/0x120
[  445.236654]  [<ffffffff8134566c>] __device_release_driver+0x7c/0xe0
[  445.236654]  [<ffffffff81345dc8>] driver_detach+0xc8/0xd0
[  445.236654]  [<ffffffff813454c8>] bus_remove_driver+0x88/0xe0
[  445.236654]  [<ffffffff81346572>] driver_unregister+0x62/0xa0
[  445.236654]  [<ffffffff812271d4>] pci_unregister_driver+0x44/0xc0
[  445.236654]  [<ffffffffa0211ce5>] iwl_pci_unregister_driver+0x15/0x20 [iwlagn]
[  445.236654]  [<ffffffffa022f595>] iwl_exit+0x9/0xa74 [iwlagn]
[  445.236654]  [<ffffffff810918f4>] sys_delete_module+0x184/0x240
[  445.236654]  [<ffffffff81452ece>] ? retint_swapgs+0xe/0x13
[  445.236654]  [<ffffffff8121098e>] ? trace_hardirqs_on_thunk+0x3a/0x3f
[  445.236654]  [<ffffffff81459e2b>] system_call_fastpath+0x16/0x1b
[  445.236654] ---[ end trace 1fbc362b7dbe5d74 ]---
[  445.236654] Mapped at:
[  445.236654]  [<ffffffff8121d7cb>] debug_dma_map_page+0x8b/0x150
[  445.236654]  [<ffffffffa021e7b7>] iwl_enqueue_hcmd+0x837/0xa40 [iwlagn]
[  445.236654]  [<ffffffffa021f92d>] iwl_trans_pcie_send_cmd+0x8d/0x580 [iwlagn]
[  445.236654]  [<ffffffffa01f7c75>] iwl_send_calib_results+0x75/0xd0 [iwlagn]
[  445.236654]  [<ffffffffa01f21f6>] iwlagn_alive_notify+0x196/0x1f0 [iwlagn]
[  445.386500] iwlagn 0000:02:00.0: PCI INT A disabled

Reported-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

iwlagn: warn about buggy fw that doesn't set SEQ_RX_FRAME

The way we check if there is host command that should be reclaimed is
way too complicated. We should have a clear indication from the fw.
The fw is expected to set the SEQ_RX_FRAME bit if the frame was
originated by the fw which indicates to the driver that there is no
host command to free.
Somehow, there seem to have been buggy fw out there, hence the very
old comment.

This code checks if we have still buggy fw out there.

Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

ath9k: Reset caldata on radio enable

Not doing so, the caldata continues to retain older history
values learned on that channel. It is always safer to start
noise floor calibration from the defaults after the assoication.
So this patch resets the nf history buffer when none of the
STA vifs are associated.

Signed-off-by: Rajkumar Manoharan <rmanohar@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

ath9k: load noise floor from history after the full chip reset

Currently during the full reset, the nf calibration is always
restarted from the defaults. The noise floor history buffers are
never be used again after the scan and ath reset. This patch
ensures that nf histories are always be used that helps to
improve the signal quality on congested environment

Signed-off-by: Rajkumar Manoharan <rmanohar@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

ath9k_hw: Fix magnitude/phase coeff correction

Do the magnitude/phase coeff correction only if the outlier
is detected. Updating wrong magnitude/phase coeff factor
impacts not only tx gain setting but also leads to poor
performance in congested networks. In the clear environment
the impact is very minimal because the outlier happens
very rarely according to the past experiment. It occured
less than once every 1000 calibrations.

Cc: stable@kernel.org
Signed-off-by: Rajkumar Manoharan <rmanohar@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

ath9k_hw: remove ar9100_hw_compute_pll_control

AR913x uses the same PLL register layout as AR9160 and later.

Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

ath9k_hw: fix setting the hardware diversity flag

ath9k_hw_set_diversity is only called from init.c where it cannot affect
the hardware setting because it's cleared on the next reset.
Instead of using a PHY op for something that's supposed to be initialized
statically, set the register value directly in the INI override function.

Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

ath9k_hw: remove dead code in the eeprom ops

The eeprom .set_addac function is only necessary for AR9160, remove it
from eeprom_4k.c and remove the dummy function from eeprom_9287.c

Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

ath9k_hw: clean up hardware revision checks

- AR_SREV_5416_20_OR_LATER is always true, remove it
- AR_SREV_9280_20_OR_LATER is always true within eeprom_4k.c and eeprom_9287.c
- (AR_SREV_9271 || AR_SREV_9285) is always true in eeprom_4k.c

Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

ath9k: sync the dma buffer after changing the retry flag

Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

cfg80211: add cfg80211_find_vendor_ie() function

Add function to find vendor-specific ie (along with
vendor-specific ie struct definition and P2P OUI values)

Signed-off-by: Eliad Peller <eliad@wizery.com>
Reviewed-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

ath9k: fix setting the IEEE80211_TX_CTL_CLEAR_PS_FILT flag

When the driver inserts padding between the 802.11 header and data, it
needs to set the hdr variable to the new header location.

Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

Revert "ath9k: do not insert padding into tx buffers on AR9380+"

This reverts commit 4245d31347bdc99a608dc1d1cfe64e44aa3d1771.

Merge branch 'for-linville' of git://github.com/lucacoelho/wl12xx

b43: Fix beacon problem in ad-hoc mode

In ad-hoc mode, driver b43 does not issue beacons.

Signed-off-by: Manual Munz <freifunk@somakoma.de>
Tested-by: Larry Finger <Larry.Finger@lwfinger.net>
Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
Cc: Stable <stable@kernel.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

Merge branch 'for-3.1' of git://github.com/padovan/bluetooth-next

Bluetooth: add support for 2011 mac mini

Today I noticed that the usb bluetooth adapter (BCM2046B1) on my 2011
mac mini was not working. I've created a patch to get it going.

Signed-off-by: Jurgen Kramer <gtmkramer@xs4all.nl>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>

Bluetooth: Add MacBookAir4,1 support

This patch against current git adds the hardware ID for the Apple
MacBookAir4,1, released in July 2011. The device features a BCM2046
USB chip. The patch was inspired by the previous modifications adding
support for the MacBookAir3,x.

Signed-off-by: Pieter-Augustijn Van Malleghem <p-a@scarlet.be>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>

Bluetooth: Fixed BT ST Channel reg order

Reordered the BT ST channel registration, to make sure that the
event channel is registered before all others. This prevents a
situation where incoming events may cause kernel panic in the ST
driver if the event channel is not yet registered to handle
incoming events.In addition, the deregistration of the channels
was also modified, to be in the reversed order of the registration,
to allow the event channel to be the last one unregistered.

Signed-off-by: Chen Ganir <chen.ganir@ti.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>

MAINTAINERS: update ath6kl

It's not in staging anymore and I'm the current maintainer.

Cc: Luis R. Rodriguez <mcgrof@gmail.com>
Cc: Naveen Singh <nvesing@qca.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

mac80211: fix endian issues and comments for BAR failure handling

Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Cc: Helmut Schaa <helmut.schaa@googlemail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

ath9k: do not insert padding into tx buffers on AR9380+

With the new EDMA descriptor format, a single descriptor can contain up
to four buffer pointers. By splitting the buffer into two parts, we can
let the hardware add the padding internally instead of using memmove on
the skb data.

Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

ath9k: optimize ath_tx_rc_status usage

The only flag that needs to be set when ath_tx_rc_status is called with
rc_update == false is the IEEE80211_TX_STAT_TX_FILTERED flag. All other
data is ignored in that case.
This flag can be set from ath_tx_complete_buf instead, so that we can
drop a few redundant calls to ath_tx_rc_status and remove the rc_update
function parameter

Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

ath9k: remove a redundant check in ath_tx_form_aggr

ath_lookup_legacy now checks all the tx rate flags for MCS vs legacy

Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

ath9k: optimize ath9k_ps_restore

ath_hw_cycle_counters_update only needs to be called if the power state
changes. Most of the time this does not happen, even when ps_usecount
goes down to 0.

Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

ath9k_hw: remove the old tx descriptor API

Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

ath9k: use the new API for setting tx descriptors

With the new API, tx descriptors can be written in one single pass
instead of having to re-read and rewrite fields from multiple places.
This makes the code easier to read and also slightly improves performance
on embedded MIPS hardware.

Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

ath9k_hw: add a new API for setting tx descriptors

Instead of using lots of different functions with long argument lists,
pull all the necessary information from one struct. This makes the code
easier to read and eliminates the need for copying data between multiple
linked descriptors.

Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

ath9k_hw: do not recalculate the descriptor checksum in ar9003_hw_fill_txdesc

Reduces the number of accesses to uncached descriptor memory.

Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

ath9k: call ath9k_hw_set_desc_link for beacon descriptors

This ensures that only ath9k_hw_set_desc_link needs to recalculate the tx
descriptor checksum on AR9380+

Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

ath9k: move ath_buf_set_rate to remove a forward declaration

Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

ath9k: reduce the number of functions that access the tx descriptor

Makes it easier to clean up the ath9k_hw descriptor API

Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

ath9k: remove ATH_TX_XRETRY and BUF_XRETRY flags

Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>