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2013-01-28Merge branch 'master' of ↵John W. Linville70-217/+6497
git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless Conflicts: drivers/net/wireless/ath/ath9k/main.c drivers/net/wireless/iwlwifi/dvm/tx.c
2013-01-22ath9k_hw: remove a useless WARN_ONFelix Fietkau1-3/+0
&ah->curchan->ani can never be NULL Signed-off-by: Felix Fietkau <nbd@openwrt.org> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2013-01-22ath9k_hw: reduce struct ar5416AniState sizeFelix Fietkau2-14/+6
It is kept per-channel, so removing unnecessary (or constant) fields from it can save quite a bit of memory. Signed-off-by: Felix Fietkau <nbd@openwrt.org> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2013-01-22ath9k_hw: remove ath9k_hw_ani_setup and its variablesFelix Fietkau4-25/+1
They are no longer needed for ANI functionality Signed-off-by: Felix Fietkau <nbd@openwrt.org> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2013-01-22ath9k_hw: make the initval parameter to ath9k_hw_write_array constFelix Fietkau2-2/+2
Signed-off-by: Felix Fietkau <nbd@openwrt.org> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2013-01-22ath9k: use ath_tx_process_buffer instead of open-coding similar codeFelix Fietkau1-37/+32
Signed-off-by: Felix Fietkau <nbd@openwrt.org> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2013-01-22ath9k: clean up processing of pending tx frames on resetFelix Fietkau4-59/+32
Dropping packets from aggregation sessions is usually not a good idea, as it might upset the synchronization of the BlockAck receive window of the remote node. The use of the retry_tx parameter to reset/tx-drain functions also seemed a bit arbitrary. This patch removes this parameter altogether and ensures that pending tx frames are not dropped for no good reason. Signed-off-by: Felix Fietkau <nbd@openwrt.org> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2013-01-22ath9k: stop rx after txFelix Fietkau1-2/+2
Completing frame transmission can fail if the rx engine is stopped prematurely, as the hw might be waiting for an ACK from the other side. Shutting down tx before rx might make the DMA shutdown more reliable. Signed-off-by: Felix Fietkau <nbd@openwrt.org> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2013-01-22net: wireless/rtlwifi: fix uninitialized variable issueCong Ding3-3/+3
The use of variable packet_beacon might be uninitialized in the three files. Signed-off-by: Cong Ding <dinggnu@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2013-01-22iwlegacy: don't return zero on failure paths in il4965_pci_probe()Alexey Khoroshilov1-0/+1
If hardware is not ready, il4965_pci_probe() breaks off initialization, deallocates all resources, but returns zero. The patch adds -EIO as return value in this case. Found by Linux Driver Verification project (linuxtesting.org). Signed-off-by: Alexey Khoroshilov <khoroshilov@ispras.ru> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2013-01-22mwl8k: don't return zero on failure paths in mwl8k_probe[_hw]()Alexey Khoroshilov1-0/+3
If pci_iomap() fails in mwl8k_probe(), it breaks off initialization, deallocates all resources, but returns zero. There is a similar issue when priv->rxd_ops is NULL in mwl8k_probe_hw(). The patch adds proper error code return values. Found by Linux Driver Verification project (linuxtesting.org). Signed-off-by: Alexey Khoroshilov <khoroshilov@ispras.ru> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2013-01-22mwifiex: correction in status codes used for association failureAmitkumar Karwar2-5/+18
When AP responds with appropriate status code, we forward that code correctly to cfg80211. But sometimes when there is no response from AP, our firmware uses proprietary status codes. We will map authentication timeout to WLAN_STATUS_AUTH_TIMEOUT and other proprietary codes to WLAN_STATUS_UNSPECIFIED_FAILURE. Signed-off-by: Amitkumar Karwar <akarwar@marvell.com> Signed-off-by: Bing Zhao <bzhao@marvell.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2013-01-22rt2x00: Improve TX status handling for BlockAckReq framesHelmut Schaa4-5/+169
Since rt2800 hardware isn't capable of reporting the TX status of BlockAckReq frames implement the TX status handling of BARs in rt2x00lib. We keep track of all BARs that are send out and try to match incoming BAs to the appropriate BARs. This allows us to report a more or less accurate TX status for BAR frames which in turn improves BA session stability. This is loosley based on Christian Lamparter's patch for carl9170 "carl9170: fix HT peer BA session corruption". We have to walk the list of pending BARs for every rx'red BA even though most BAs don't belong to any of these BARs as they are just acknowledging an AMPDU. To keep that overhead low use RCU which allows us to walk the list of pending BARs without the need to acquire a lock. This however requires us to _copy_ relevant information from the BAR (RA, TA, control field, start sequence number) into our BAR list entry. Signed-off-by: Helmut Schaa <helmut.schaa@googlemail.com> Tested-by: Andreas Hartmann <andihartmann@01019freenet.de> Acked-by: Gertjan van Wingerde <gwingerde@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2013-01-22prism54: bug in getting auth typeDan Carpenter1-0/+1
There is a missing break statement so SHARED_KEY authentication doesn't work. Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2013-01-22b43: N-PHY: fix gain in b43_nphy_get_gain_ctl_workaround_ent()Dan Carpenter1-22/+8
There were no break statements in this switch statement so everything used the default settings. Per Walter Harms's suggestion, I've replaced the switch statement and done a little cleanup. Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2013-01-22drivers/net/wireless: need consider the not '\0' terminated string.Chen Gang1-5/+14
in ray_cs.c: the a_current_ess_id is "Null terminated unless ESSID_SIZE long" so we need buffer it with '\0' firstly, before using strlen or %s. additional information: in drivers/net/wireless/rayctl.h: "NULL terminated unless 32 long" is a comment at line 616, 664 ESSID_SIZE is 32, at line 190 in include/uapi/linux/wireless.h: IW_ESSID_MAX_SIZE is also 32 in drivers/net/wireless/ray_cs.c: use strncpy for it, without '\0' terminated, at line 639 use memcpy for it, assume not '\0' terminated in line 1092..1097 buffer it with '\0' firstly, before using %s, in line 2576, 2598..2600 Signed-off-by: Chen Gang <gang.chen@asianux.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2013-01-22ath9k_hw: fix RF bank initializationFelix Fietkau4-14/+9
ar900*_init_mode_regs needs to be called before RF banks are allocated, otherwise the storage size of RF banks isn't known. This patch fixes a memory overrun that can show up as a crash on unloading the module. Signed-off-by: Felix Fietkau <nbd@openwrt.org> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2013-01-22Merge branch 'for-john' of ↵John W. Linville32-274/+583
git://git.kernel.org/pub/scm/linux/kernel/git/jberg/mac80211-next
2013-01-22Merge branch 'for-john' of ↵John W. Linville8-68/+212
git://git.kernel.org/pub/scm/linux/kernel/git/iwlwifi/iwlwifi-next
2013-01-22mwifiex: fix typo in PCIe adapter NULL checkAvinash Patil1-1/+1
Add missing "!" as we are supposed to check "!card->adapter" in PCIe suspend handler. Cc: "3.2+" <stable@vger.kernel.org> Signed-off-by: Avinash Patil <patila@marvell.com> Signed-off-by: Bing Zhao <bzhao@marvell.com> Reviewed-by: Sergey V. <sftp.mtuci@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2013-01-22ath9k: allow setting arbitrary antenna masks on AR9003+Felix Fietkau1-0/+3
Cc: stable@vger.kernel.org Signed-off-by: Felix Fietkau <nbd@openwrt.org> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2013-01-22ath9k_hw: fix chain swap setting when setting rx chainmask to 5Felix Fietkau1-19/+6
Chain swapping should only be enabled when the EEPROM chainmask is set to 5, regardless of what the runtime chainmask is. Cc: stable@vger.kernel.org Signed-off-by: Felix Fietkau <nbd@openwrt.org> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2013-01-22ath9k_hw: fix calibration issues on chainmask that don't include chain 0Felix Fietkau3-1/+4
Cc: stable@vger.kernel.org Signed-off-by: Felix Fietkau <nbd@openwrt.org> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2013-01-22rtlwifi: Fix build warning introduced by commit a290593Larry Finger1-2/+2
The kbuild test robot reports the following warning with x86_64-randconfig-x955: warning: (RTL8192CE && RTL8192SE && RTL8192DE && RTL8723AE && RTL8192CU) selects RTLWIFI which has unmet direct dependencies (NETDEVICES && WLAN && (RTL8192CE || RTL8192CU || RTL8192SE || RTL8192DE)) This warning was introduced in commit a290593, "rtlwifi: Modify files for addition of rtl8723ae", and is d ue to a missing dependence of RTLWIFI on RTL8723AE. Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net> Cc: kbuild test robot <fengguang.wu@intel.com> Reported-by: kbuild test robot <fengguang.wu@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2013-01-22iwlegacy: fix IBSS cleanupStanislaw Gruszka1-21/+14
We do not correctly change interface type when switching from IBSS mode to STA mode, that results in microcode errors. Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=886946 Reported-by: Jaroslav Skarvada <jskarvad@redhat.com> Cc: stable@vger.kernel.org Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2013-01-22Merge branch 'for-john' of ↵John W. Linville6-31/+35
git://git.kernel.org/pub/scm/linux/kernel/git/jberg/mac80211
2013-01-22Merge branch 'for-john' of ↵John W. Linville1-0/+2
git://git.kernel.org/pub/scm/linux/kernel/git/iwlwifi/iwlwifi-fixes
2013-01-16mac80211: split out chandef tracing macrosJohannes Berg1-9/+15
Some new APIs will require tracing a chandef without it being part of a channel context, so separate out the tracing macros for that. Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2013-01-16cfg80211: check radar interface combinationsSimon Wunderlich6-8/+60
To ease further DFS development regarding interface combinations, use the interface combinations structure to test for radar capabilities. Drivers can specify which channel widths they support, and in which modes. Right now only a single AP interface is allowed, but as the DFS code evolves other combinations can be enabled. Signed-off-by: Simon Wunderlich <siwu@hrz.tu-chemnitz.de> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2013-01-16cfg80211: Allow use_mfp to be specified with the connect commandJouni Malinen4-4/+16
The NL80211_ATTR_USE_MFP attribute was originally added for NL80211_CMD_ASSOCIATE, but it is actually as useful (if not even more useful) with NL80211_CMD_CONNECT, so process that attribute with the connect command, too. Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2013-01-16mac80211: add encrypt headroom to PERR framesBob Copeland1-1/+3
Mesh PERR action frames are robust and thus may be encrypted, so add proper head/tailroom to allow this. Fixes this warning when operating a Mesh STA on ath5k: WARNING: at net/mac80211/wpa.c:427 ccmp_encrypt_skb.isra.5+0x7b/0x1a0 [mac80211]() Call Trace: [<c011c5e7>] warn_slowpath_common+0x63/0x78 [<c011c60b>] warn_slowpath_null+0xf/0x13 [<e090621d>] ccmp_encrypt_skb.isra.5+0x7b/0x1a0 [mac80211] [<e090685c>] ieee80211_crypto_ccmp_encrypt+0x1f/0x37 [mac80211] [<e0917113>] invoke_tx_handlers+0xcad/0x10bd [mac80211] [<e0917665>] ieee80211_tx+0x87/0xb3 [mac80211] [<e0918932>] ieee80211_tx_pending+0xcc/0x170 [mac80211] [<c0121c43>] tasklet_action+0x3e/0x65 Signed-off-by: Bob Copeland <me@bobcopeland.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2013-01-16mac80211: set NEED_TXPROCESSING for PERR framesBob Copeland1-0/+1
A user reported warnings in ath5k due to transmitting frames with no rates set up. The frames were Mesh PERR frames, and some debugging showed an empty control block with just the vif pointer: > [ 562.522682] XXX txinfo: 00000000: 00 00 00 00 00 00 00 00 00 00 00 > 00 00 00 00 00 ................ > [ 562.522688] XXX txinfo: 00000010: 00 00 00 00 00 00 00 00 54 b8 f2 > db 00 00 00 00 ........T....... > [ 562.522693] XXX txinfo: 00000020: 00 00 00 00 00 00 00 00 00 00 00 > 00 00 00 00 00 ................ Set the IEEE80211_TX_INTFL_NEED_TXPROCESSING flag to ensure that rate control gets run before the frame is sent. Signed-off-by: Bob Copeland <me@bobcopeland.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2013-01-16nl80211: allow user-space to set address for P2P_DEVICEArend van Spriel2-0/+11
As per email discussion Jouni Malinen pointed out that: "P2P message exchanges can be executed on the current operating channel of any operation (both P2P and non-P2P station). These can be on 5 GHz and even on 60 GHz (so yes, you _can_ do GO Negotiation on 60 GHz). As an example, it would be possible to receive a GO Negotiation Request frame on a 5 GHz only radio and then to complete GO Negotiation on that band. This can happen both when connected to a P2P group (through client discoverability mechanism) and when connected to a legacy AP (assuming the station receive Probe Request frame from full scan in the beginning of P2P device discovery)." This means that P2P messages can be sent over different radio devices. However, these should use the same P2P device address so it should be able to provision this from user-space. This patch adds a parameter for this to struct vif_params which should only be used during creation of the P2P device interface. Cc: Jouni Malinen <j@w1.fi> Cc: Greg Goldman <ggoldman@broadcom.com> Cc: Jithu Jance <jithu@broadcom.com> Signed-off-by: Arend van Spriel <arend@broadcom.com> [add error checking] Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2013-01-16{cfg,nl}80211: mesh power mode primitives and userspace accessMarco Porsch4-1/+113
Add the nl80211_mesh_power_mode enumeration which holds possible values for the mesh power mode. These modes are unknown, active, light sleep and deep sleep. Add power_mode entry to the mesh config structure to hold the user-configured default mesh power mode. This value will be used for new peer links. Add the dot11MeshAwakeWindowDuration value to the mesh config. The awake window is a duration in TU describing how long the STA will stay awake after transmitting its beacon in PS mode. Add access routines to: - get/set local link-specific power mode (STA) - get remote STA's link-specific power mode (STA) - get remote STA's non-peer power mode (STA) - get/set default mesh power mode (mesh config) - get/set mesh awake window duration (mesh config) All config changes may be done at mesh runtime and take effect immediately. Signed-off-by: Marco Porsch <marco@cozybit.com> Signed-off-by: Ivan Bezyazychnyy <ivan.bezyazychnyy@gmail.com> Signed-off-by: Mike Krinkin <krinkin.m.u@gmail.com> [fix commit message line length, error handling in set station] Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2013-01-16{cfg,nl,mac}80211: set beacon interval and DTIM period on mesh joinMarco Porsch6-3/+27
Move the default mesh beacon interval and DTIM period to cfg80211 and make them accessible to nl80211. This enables setting both values when joining an MBSS. Previously the DTIM parameter was not set by mac80211 so the driver's default value was used. Signed-off-by: Marco Porsch <marco@cozybit.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2013-01-16mac80211: move add_tim to subfunctionMarco Porsch1-19/+28
This functions will be used for mesh beacons, too. Signed-off-by: Marco Porsch <marco@cozybit.com> [some formatting fixes] Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2013-01-16mac80211: update mesh peer link counter during userspace peeringMarco Porsch3-17/+33
The established peer link count is indicated in mesh beacons and used for other internal tasks. Previously it was not updated when authenticated peering is performed in userspace. Signed-off-by: Marco Porsch <marco@cozybit.com> Acked-by: Thomas Pedersen <thomas@cozybit.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2013-01-16nl80211: add range checks to mesh parametersMarco Porsch1-35/+44
Ranges are taken from IEEE 802.11-2012, common sense or current implementation requirements. Signed-off-by: Marco Porsch <marco@cozybit.com> Acked-by: Thomas Pedersen <thomas@cozybit.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2013-01-16mac80211: allow disable power save in meshChun-Yeow Yeoh1-1/+2
Allow mesh interface to disable the power save which is by default turn on in certain chipset. Testing with 2 units of ZCN-1523H-5-16 featuring AR9280 chipset which have power save enabled by default. Constant reset if the average signal of the peer mesh STA is below -80 dBm and power save is enabled. Signed-off-by: Chun-Yeow Yeoh <yeohchunyeow@gmail.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2013-01-16mac80211: call restart complete at wowlan resume timeJohannes Berg2-4/+8
When the driver's resume function can't completely restore the configuration in the device, it returns 1 from the callback which will be treated like a HW restart request, but done directly. In this case, also call the driver's restart_complete() function so it can finish the reconfiguration there. Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2013-01-16mac80211: fix resume from WoWLANJohannes Berg1-2/+4
My commit 529ba6e9313dbe60dab7e72c6fdf647a012e9f5b ("mac80211: clean up association better in suspend") introduced a bug when resuming from WoWLAN when a device reset is desired. This case must not use the suspend_bss_conf as it hasn't been stored. Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2013-01-16{cfg,mac}80211.h: fix some kernel-doc warningsYacine Belkadi2-80/+153
When building the 80211 DocBook, scripts/kernel-doc reports the following type of warnings: Warning(include/net/cfg80211.h:334): No description found for return value of 'cfg80211_get_chandef_type' These warnings are only reported when scripts/kernel-doc runs in verbose mode. To fix these use "Return:" to describe function return values. Signed-off-by: Yacine Belkadi <yacine.belkadi.1@gmail.com> [adjust for freq_reg_info() change] Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2013-01-16mac80211: fix monitor mode injectionFelix Fietkau1-3/+6
Channel contexts are not always used with monitor interfaces. If no channel context is set, use the oper channel, otherwise tx fails. Signed-off-by: Felix Fietkau <nbd@openwrt.org> [check local->use_chanctx] Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2013-01-16mac80211: synchronize scan off/on-channel and PS statesStanislaw Gruszka3-26/+14
Since: commit b23b025fe246f3acc2988eb6d400df34c27cb8ae Author: Ben Greear <greearb@candelatech.com> Date: Fri Feb 4 11:54:17 2011 -0800 mac80211: Optimize scans on current operating channel. we do not disable PS while going back to operational channel (on ieee80211_scan_state_suspend) and deffer that until scan finish. But since we are allowed to send frames, we can send a frame to AP without PM bit set, so disable PS on AP side. Then when we switch to off-channel (in ieee80211_scan_state_resume) we do not enable PS. Hence we are off-channel with PS disabled, frames are not buffered by AP. To fix remove offchannel_ps_disable argument and always enable PS when going off-channel and disable it when going on-channel, like it was before. Cc: stable@vger.kernel.org # 2.6.39+ Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com> Tested-by: Seth Forshee <seth.forshee@canonical.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2013-01-16mac80211: fix FT roamingJohannes Berg1-1/+11
During FT roaming, wpa_supplicant attempts to set the key before association. This used to be rejected, but as a side effect of my commit 66e67e418908442389d3a9e ("mac80211: redesign auth/assoc") the key was accepted causing hardware crypto to not be used for it as the station isn't added to the driver yet. It would be possible to accept the key and then add it to the driver when the station has been added. However, this may run into issues with drivers using the state- based station adding if they accept the key only after association like it used to be. For now, revert to the behaviour from before the auth and assoc change. Cc: stable@vger.kernel.org Reported-by: Cédric Debarge <cedric.debarge@acksys.fr> Tested-by: Cédric Debarge <cedric.debarge@acksys.fr> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2013-01-16iwlwifi: improve the reports in TX pathEmmanuel Grumbach4-20/+61
Also when things go wrong (queues don't get emtpy), try to get some data from the HW. Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2013-01-16iwlwifi: audit single frames from AGG queue in RSEmmanuel Grumbach1-0/+2
The rate scaling won't treat the information in a frame with IEEE80211_TX_CTL_AMPDU set if IEEE80211_TX_STAT_AMPDU is cleared. But all the frames coming from an AGG tx queue have IEEE80211_TX_CTL_AMPDU set, and IEEE80211_TX_STAT_AMPDU is set only if the frame was sent in an AMPDU. This means that all the data in frames in AGG tx queues that aren't sent as an AMPDU is thrown away. This is even more harmful when in bad link conditions, the frames are sent in an AMPDU and then finally sent as single frame. So a lot of failures weren't reported and the rate scaling got stuck in high rates leading to very poor connectivity. Fix that by clearing IEEE80211_TX_CTL_AMPDU when the frame isn't part of an AMPDU. This bug was introduced by 2eb81a40aa521035ff9c8c8309e482dff523f8c9 iwlwifi: don't clear CTL_AMPDU on frame status This fix basically reverts the aforementioned commit. Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2013-01-16iwlwifi: enable communication with WoWLAN firmwareJohannes Berg7-24/+136
On resuming, the opmode may have to be able to talk to the WoWLAN/D3 firmware in order to query it about its status and wakeup reasons. To do that, the opmode has to call the new d3_resume() transport API which will set up the device for command communcation. Reviewed-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2013-01-16iwlwifi: simplify scheduler memory clearingJohannes Berg1-15/+7
Writing 130 dwords into the device one by one is rather inefficient, every one needs to lock, grab NIC access (a few register reads/writes) and then write the address and data registers. Use the new memory clearing function to make this easier and faster. Reviewed-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2013-01-16iwlwifi: allow to zero SRAMEmmanuel Grumbach2-2/+4
Sending a NULL pointer to iwl_trans_write_mem allows now to zero SRAM. Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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