Commit Graph

480798 Commits

Author SHA1 Message Date
Alexander Aring 1054ed81c4 mac802154: rx: remove override pkt_type set to PACKET_HOST
This patch removes pkt_type set to PACKET_HOST while monitor receiving.
This should be PACKET_OTHERHOST on monitor mode which already set
before.

Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2014-10-29 23:07:45 +01:00
Alexander Aring ec718f3db9 mac802154: rx: add software checksum filtering check
This patch adds a new hardware flag which indicate that the transceiver
doesn't support check for bad checksum via hardware. Also add a handling of
this while receive.

Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2014-10-29 23:07:45 +01:00
Alexander Aring b7889497d3 mac802154: rx: simplify crc receive handling
This patch change the actual crc handling while receive. Currently the
IEEE802154_HW_RX_OMIT_CKSUM flag is used to filter a frame with a bad crc.
This patch changes the behaviour of IEEE802154_HW_RX_OMIT_CKSUM to add a
crc while receiving for the monitor interface. After monitor receiving
we remove the crc for frame parsing. This affect the driver layer
because all drivers sets IEEE802154_HW_RX_OMIT_CKSUM and deliver without
checksum.

Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2014-10-29 23:07:45 +01:00
Alexander Aring 08c511a733 mac802154: rx: remove unnecessary parameter
This patch removes a not used parameter in ieee802154_deliver_skb.

Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2014-10-29 23:07:45 +01:00
Alexander Aring 90386a7e3b mac802154: separate omit tx/rx flags
This patch splits the IEEE802154_HW_OMIT_CKSUM hardware flag into
IEEE802154_HW_TX_OMIT_CKSUM and IEEE802154_HW_RX_OMIT_CKSUM. This is
useful to deliver the received crc from the driver layer to the monitor
interface. At the moment we can't do that without change the xmit
handling.

The received checksum should be visible in monitor mode only.

Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2014-10-29 23:07:45 +01:00
Alexander Aring 92f45f5466 at86rf230: add support for promiscuous mode
This patch adds support for promiscuous mode setting for the at86rf230
driver.

Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2014-10-29 23:07:45 +01:00
Alexander Aring 94b792220c mac802154: add support for promiscuous mode
This patch adds a new driver operation to bring the transceiver into
promiscuous mode.

Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2014-10-29 23:07:45 +01:00
Alexander Aring c8fc84ed60 mac802154: add hardware address filter flag
Overdue introduction for address filtering hardware flag. Furthermore we
will check and set address filtering on interface up. This patch
prepares that we can check if an transceiver supports address filtering
option. Currently all mainline driver supports hardware address filtering.

Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Cc: Alan Ott <alan@signal11.us>
Cc: Varka Bhadram <varkabhadram@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2014-10-29 23:07:44 +01:00
Alexander Aring ab79be3eeb mac802154: add IEEE802154_HW_ARET hw flag
This patch adds a new IEEE802154_HW_ARET hardware flag for indicating
that the transceiver supports ARET handling. Also remove the
IEEE802154_HW_FRAME_RETRIES from IEEE802154_HW_CSMA flag. Frame retries
handling is part of ARET.

Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2014-10-29 23:07:44 +01:00
Alexander Aring 90a6161df5 mac802154: remove tab after define
This patch removes tabs after define in hardware flags declarations.

Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2014-10-29 23:07:44 +01:00
Alexander Aring 55a2d06517 mac802154: main: remove unnecessary include
This patch removes an unnecessary include of driver-ops header file.

Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2014-10-29 23:07:44 +01:00
Johannes Berg 171fdf77db mac80211-hwsim: remove spurious newline
This newline shouldn't be there, remove it.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2014-10-29 18:43:39 +01:00
Ben Greear e49786dbeb mac80211-hwsim: support SGI-20
This lets hostapd start if you have SGI-20 configured
as one of your HT capabilities.

Signed-off-by: Ben Greear <greearb@candelatech.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2014-10-29 18:42:52 +01:00
Johannes Berg fc1f48ffd5 cfg80211: fix integer signedness in chandef_primary_freqs()
The helper function can't ever create negative values, so use
u32 pointers as the function arguments as the caller does.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2014-10-29 18:42:51 +01:00
Fabian Frederick dcc6c2f516 cfg80211: fix set but not used warning in nl80211_channel_switch()
radar_detect_width is unused since commit 97dc94f1d9
("cfg80211: remove channel_switch combination check")

Signed-off-by: Fabian Frederick <fabf@skynet.be>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2014-10-29 18:42:51 +01:00
Ben Greear 4f86ed8f87 mac80211-hwsim: add frequency attribute to netlink pkts
Add frequency attribute when sending to user-space over
netlink socket.  The frequency is currently ignored when
receiving from user-space.

Signed-off-by: Ben Greear <greearb@candelatech.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2014-10-29 18:42:43 +01:00
Varka Bhadram ef0bbac33d MAINTAINERS: add cc2520 driver maintainer
This patch adds maintainer for cc2520 radio driver

Signed-off-by: Varka Bhadram <varkab@cdac.in>
Acked-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2014-10-29 17:25:18 +01:00
Jukka Rissanen 5940c3e4f3 mac80211-hwsim: Rename CREATE and DESTROY radio to NEW and DEL radio
Using the name HWSIM_CMD_NEW_RADIO and HWSIM_CMD_DEL_RADIO is more
fitting on how other pieces of the wireless system work.

Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2014-10-29 16:48:44 +01:00
Jukka Rissanen 9cfd5a23a4 Bluetooth: Wrong style spin lock used
Use spin_lock_bh() as the code is called from softirq in networking subsystem.
This is needed to prevent deadlocks when 6lowpan link is in use.

Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2014-10-29 16:20:40 +01:00
Eliad Peller 4ff78181f4 iwlwifi: mvm: unref SCAN ref on scan completion
The scan reference wasn't released in case of offloaded scan,
causing the refcount to go wrong and prevent the device
from going into d0i3.

Signed-off-by: Eliad Peller <eliadx.peller@intel.com>
Reviewed-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
2014-10-29 14:13:47 +02:00
Eyal Shapira d8bafeaf46 iwlwifi: mvm: rs: add Tx STBC support
STBC is enabled on HT/VHT SISO rates in case we don't care
about power consumption and it won't hurt BT.
This is done only in case the peer and our chip support STBC
of course.
While at it fixed a bug which was causing bw and ldpc
flags to be set incorrectly in the rate scale table in case
we are switching to a legacy Tx column. This had no real impact.

Signed-off-by: Eyal Shapira <eyalx.shapira@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
2014-10-29 14:13:46 +02:00
David Spinadel 1e2ebe0e40 iwlwifi: mvm: fix scan condition iterator
Scan condition iterator assumes that an interface is associated if
phy_ctxt is assigned, but this isn't the sutuation in P2P device.
OTOH P2P device is never associated so we can simply ignore it.

Signed-off-by: David Spinadel <david.spinadel@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
2014-10-29 14:13:46 +02:00
Johannes Berg aadede6e9f iwlwifi: mvm: port to devcoredump framework
iwlwifi features a debug mechanism that allows to dump
binary data which is helpful to debug the firmware.
Until now, this data was made available for the userspace
through debugfs. For this exact purpose, devcoredump was
created. Move to the new infrastructure.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
2014-10-29 14:13:43 +02:00
Eyal Shapira b260362ab7 iwlwifi: enable STBC support for 8000 chips
These chips support STBC in both Tx and Rx.
Given that we've added STBC Tx support enable it.

Signed-off-by: Eyal Shapira <eyalx.shapira@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
2014-10-29 13:07:35 +02:00
Joe Perches 50f6635afe iwlwifi: dvm: Fix probable mask then right shift defect
Precedence of & and >> is not the same and is not left to right.
shift has higher precedence and should be done after the mask.

Add parentheses around the mask.

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
2014-10-29 12:53:07 +02:00
Luciano Coelho 7ae83d0082 iwlwifi: mvm: remove unnecessary includes in tt.c
We used to need to include some headers in order to read the registers
and do all the calculations by ourselves, but this is not done anymore
(i.e. we let the firmware do this for us), so we don't need to include
those headers anymore.

Signed-off-by: Luciano Coelho <luciano.coelho@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
2014-10-29 12:53:07 +02:00
Johannes Berg 480acbcee4 iwlwifi: mvm: flush queues without mutex held
For WMM-AC we may have to be changing QoS parameters while the
queues are being flushed. This is not relevant in the "drop"
case, but matters when we wait for the device to finish the
transmissions.

To allow this, do the actual waiting without holding the mutex.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
2014-10-29 12:52:28 +02:00
Johannes Berg f85e9d19d4 iwlwifi: mvm: improve MCS rate warning
The warning gives no information about the frame, and presents
the flags so that one might think they're the frame. Clarify
and add more information.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
2014-10-29 12:52:28 +02:00
Emmanuel Grumbach ee00aed175 iwlwifi: mvm: BT Coex - make the multiprio lut a constant
This makes it easier to tune the values during the testing.

Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
2014-10-29 12:52:27 +02:00
Arik Nemtsov d92b732e35 iwlwifi: mvm: remove mvm argument from get_queues_mask
It is unused and won't be available in some future invocations of the
function.

Signed-off-by: Arik Nemtsov <arikx.nemtsov@intel.com>
Reviewed-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
2014-10-29 12:52:26 +02:00
Max Stepanov 3b8983b17c iwlwifi: mvm: add MVM_FW_BCAST_FILTER_PASS_ALL option
The MVM_FW_BCAST_FILTER_PASS_ALL option defined in iwl-dbg-cfg.ini
configuration file allows to enable/disable FW broadcast filtering.

If MVM_FW_BCAST_FILTER_PASS_ALL is not defined in iwl-dbg-cfg.ini or
its value is 0, the mvm broadcast filtering is enabled.

Setting MVM_FW_BCAST_FILTER_PASS_ALL=1 in iwl-dbg-cfg.ini blocks sending
of BCAST_FILTER_CMD to FW.

Signed-off-by: Max Stepanov <Max.Stepanov@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
2014-10-29 12:52:26 +02:00
Emmanuel Grumbach f3b2098d98 iwlwifi: mvm: BT Coex - move BT_ANTENNA_COUPLING_THRESHOLD to constants
This is were it really needs to be.

Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
2014-10-29 12:52:25 +02:00
Eran Harary c7583d7dd6 iwlwifi: always run the secured flow for family 8000
In the new format the "CSS section" has the same TLV type
as the "mem section". So we need to run the secured flow
for all the 8000 products.

Signed-off-by: Eran Harary <eran.harary@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
2014-10-29 12:52:24 +02:00
Emmanuel Grumbach a3ead6568c iwlwifi: pcie: fix recovery from ARC reset in WoWLAN
When the ARC is reset when we exit from Sx in case we had
WoWLAN running, we can't access the prph before we reset
the NIC.

Reviewed-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
2014-10-29 12:52:23 +02:00
Emmanuel Grumbach 40a76905ad iwlwifi: pcie: warn if extern fw_debug buffer failed
Otherwise we have no way to know that the buffer hasn't been
allocated.

Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
2014-10-29 12:52:23 +02:00
Gregory Greenman 77d96730db iwlwifi: allow to restrict Tx aggregation size per-device
A few slave bus devices show better performance when we
reduce the size of the Tx A-MPDU.

Signed-off-by: Gregory Greenman <gregory.greenman@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
2014-10-29 12:49:13 +02:00
Luciano Coelho 7f549e2c45 iwlwifi: mvm: change the iwl_mvm_d3_iface_iterator into a generic function
Getting the BSS station vif is something that may be needed by other
parts of the code.  So, instead of having an iterator specifically for
d3, change it into a generic one in utils.c.  Additionally, add a
iwl_mvm_get_bss_vif() function to make it easier to retrieving it.

Signed-off-by: Luciano Coelho <luciano.coelho@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
2014-10-29 12:49:13 +02:00
Luciano Coelho 3c2f3b20e4 iwlwifi: mvm: add debugfs entry to configure netdetect SSIDs
Before we get all the chain (ie. mac80211, cfg80211, nl80211 and
userspace) changed to support net-detect, we can use this debugfs
entry for easy testing and as a proof of concept.

Signed-off-by: Luciano Coelho <luciano.coelho@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
2014-10-29 12:49:13 +02:00
Luciano Coelho b141c23581 iwlwifi: mvm: spin off a function to start scan offload
The net-detect feature will require a scan offload to be started in
the same way it is done now for scheduled scan.  Spin a new function
off of the sched_scan_start op code for reuse.  Additionally,
restructure the function a bit for more readability.

Signed-off-by: Luciano Coelho <luciano.coelho@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
2014-10-29 12:49:12 +02:00
Luciano Coelho 1e4d19ca6e iwlwifi: mvm: move the check if associated outside of the iterator for wowlan
Instead of checking if we are associated when suspending with wowlan
enabled in the interface iterator, allow it to return an unassociated
vif and move the check to the main suspend function.  This will be
needed by netdetect, since it should also work when we are not
associated but the vif is active.

Signed-off-by: Luciano Coelho <luciano.coelho@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
2014-10-29 12:49:12 +02:00
Luciano Coelho 671b58202e iwlwifi: mvm: split wowlan handling out of the main suspend function
Take the WoWLAN handling code out of the main suspend function,
dividing it into three parts: get_config (which is used before the
firmware is switched), switch_to_d3 (which handles the rebooting of
the hardware with the D3 firmware) and config (which configures the D3
firmware for WoWLAN operation).  This is necessary to prepare for the
net-detect implementation, which will use only the switch_to_d3 part
of this flow.

Signed-off-by: Luciano Coelho <luciano.coelho@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
2014-10-29 12:49:12 +02:00
Luciano Coelho 31ca09dd6b iwlwifi: mvm: hold the rtnl when resuming from a d3 test
We use ieee80211_iter_keys() which requires the rtnl to be held.  If
we don't lock the rtnl, like we do when we suspend during a d3 test,
we get the following splat:

 RTNL: assertion failed at net/mac80211/key.c (566)
 CPU: 1 PID: 26529 Comm: cat Tainted: G        W  O 3.10.29-dev #1
 Hardware name: Dell Inc. Latitude E6430/0CPWYR, BIOS A09 12/13/2012
  e7b15008 e7b15008 e68adc1c c168aa62 e68adc54 f91f20b6 f923700c f9236fd8
  00000236 00000000 ece23874 00000000 f94941e0 00000000 e43b8e48 e7b15008
  00000000 e8b69e78 e68adcc0 f9493ab9 e68adc68 00000000 e43b8e48 e7b15008
 Call Trace:
  [<c168aa62>] dump_stack+0x16/0x18
  [<f91f20b6>] ieee80211_iter_keys+0x166/0x170 [mac80211]
  [<f94941e0>] ? iwl_mvm_query_wakeup_reasons+0x5f0/0x5f0 [iwlmvm]
  [<f9493ab9>] iwl_mvm_setup_connection_keep.isra.5+0x99/0x1d0 [iwlmvm]
  [<f9165e28>] ? cfg80211_report_wowlan_wakeup+0x308/0x510 [cfg80211]
  [<f9493fe5>] iwl_mvm_query_wakeup_reasons+0x3f5/0x5f0 [iwlmvm]
  [<c116125a>] ? init_object+0x3a/0x70
  [<f8a5b8ee>] ? iwl_trans_pcie_d3_resume+0x1be/0x3a0 [iwlwifi]
  [<f94956da>] __iwl_mvm_resume+0x14a/0x180 [iwlmvm]
  [<f9495736>] iwl_mvm_d3_test_release+0x26/0xc0 [iwlmvm]
  [<c117a64d>] __fput+0xad/0x210
  [<c117a7bd>] ____fput+0xd/0x10
  [<c10601a1>] task_work_run+0x81/0xb0
  [<c1040fa5>] do_exit+0x255/0xac0
  [<c104e511>] ? dequeue_signal+0x31/0x1a0
  [<c1041888>] do_group_exit+0x38/0xa0
  [<c10a6cfb>] ? trace_hardirqs_on+0xb/0x10
  [<c1051c31>] get_signal_to_deliver+0x1e1/0x8e0
  [<c104bd52>] ? try_to_del_timer_sync+0x42/0x60
  [<c104bd70>] ? try_to_del_timer_sync+0x60/0x60
  [<c168dc82>] ? schedule_timeout+0x102/0x2a0
  [<c10011ba>] do_signal+0x3a/0x8e0
  [<c104b190>] ? __internal_add_timer+0xb0/0xb0
  [<c168de7a>] ? schedule_timeout_interruptible+0x1a/0x20
  [<c104ce39>] ? msleep_interruptible+0x39/0x40
  [<f94939a9>] ? iwl_mvm_d3_test_read+0x49/0x70 [iwlmvm]
  [<c11797fc>] ? vfs_read+0x8c/0x160
  [<c11243af>] ? SyS_fadvise64_64+0x15f/0x2b0
  [<f9493960>] ? iwl_mvm_wowlan_program_keys+0x4a0/0x4a0 [iwlmvm]
  [<c1179a57>] ? SyS_read+0x57/0xa0
  [<c1001acf>] do_notify_resume+0x6f/0xa0
  [<c1692500>] work_notifysig+0x29/0x31

Fix this by hold the rtnl lock when calling __iwl_mvm_resume() in the
d3 test wake up path.

Signed-off-by: Luciano Coelho <luciano.coelho@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
2014-10-29 12:49:12 +02:00
Emmanuel Grumbach 8dfc275109 iwlwifi: mvm: remove unneeded NULL pointer check
mac80211 will never call rate_control_tx_status with a NULL
pointer for sta. Remove the superfluous check. This check
misled smatch.

Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
2014-10-29 12:49:11 +02:00
Eyal Shapira dc574e5263 iwlwifi: rs: option to easily disable Tx MIMO
The current TLC isn't optimized for low latency and some devices
have issues with MIMO. This kind of combo creates latency issues.
Allow to temporarily disable MIMO for tests in order to solve
the latency issues without the added complexity of MIMO.

Signed-off-by: Eyal Shapira <eyalx.shapira@intel.com>
Signed-off-by: Arik Nemtsov <arikx.nemtsov@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
2014-10-29 12:49:11 +02:00
Emmanuel Grumbach e7322f3288 Merge remote-tracking branch 'iwlwifi-fixes/master' into iwlwifi-next 2014-10-29 12:48:37 +02:00
Alexander Aring e23e9ec16b ieee802154: introduce sysfs file
This patch moves the sysfs handling in a own file. This is like wireless
sysfs file handling.

Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2014-10-28 23:19:09 +01:00
Alexander Aring 7445764155 mac802154: cleanup open count handling
This patch cleanups the open_count variable increment in open and close
calls of netdev.

Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2014-10-28 23:19:09 +01:00
Alexander Aring c7420c367d mac802154: move mac_params functions into mac_cmd
These functions can be static in mac_cmd file.

Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2014-10-28 23:19:08 +01:00
Alexander Aring 12439a5356 mac802154: remove channel attributes from sdata
These channel attributes was part of "channel context switch while xmit"
which was removed by commit dc67c6b30f
("mac802154: tx: remove xmit channel context switch"). This patch
removes these unnecessary variables and use the current_page and
current_channel by wpan_phy struct now.

Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2014-10-28 23:19:08 +01:00
Alexander Aring 33d4189f51 mac802154: iface: remove assign to zero
These variables should already be zero, so we remove the extra assign to
zero.

Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2014-10-28 23:19:08 +01:00