356 Commits
Author SHA1 Message Date
Lorenzo BianconiandFelix Fietkau 1987b741da mt76: mt76x0: remove 350ms delay in mt76x0_phy_calibrate
Since mt76x0 does not save the phy calibration data it is not necessary
to wait 350ms in mt76x0_phy_calibrate

Tested-by: Sid Hayn <[email protected]>
Signed-off-by: Lorenzo Bianconi <[email protected]>
2019-10-28 08:41:13 +01:00
Pawel DembickiandFelix Fietkau c11a4ad06d mt76: mt76x0: eeprom: add support for MAC address from OF
mt76x0e driver only supports MAC addresses from
calibration data eeprom. Many routers however do not
have a valid stock address set in this field.

This patch makes it possible to take a MAC address
from OF (e.g. from mtd).

Signed-off-by: Pawel Dembicki <[email protected]>
[adjusted for kernel submission]
Signed-off-by: Adrian Schmutzler <[email protected]>
Signed-off-by: Felix Fietkau <[email protected]>
2019-10-07 16:11:03 +02:00
Felix Fietkau 0e5050ee79 mt76: mt76x02: track approximate tx airtime for airtime fairness and survey
Estimate by calculating duration for EWMA packet size + estimated A-MPDU
length on tx status events

Signed-off-by: Felix Fietkau <[email protected]>
2019-09-26 14:59:06 +02:00
Felix Fietkau 3429cc7d36 mt76: mt76x02: move MT_CH_TIME_CFG init to mt76x02_mac_cc_reset
Reduces code duplication and adds missing bits for USB variants

Signed-off-by: Felix Fietkau <[email protected]>
2019-09-26 14:59:06 +02:00
Felix Fietkau de118bb403 mt76: unify channel survey update code
Host time is used to calculate the channel active time on mt7603 and mt7615.
Use the same on mt76x02 and move the lock to core code to get rid of some
duplicated code.

Signed-off-by: Felix Fietkau <[email protected]>
2019-09-26 14:59:06 +02:00
Felix Fietkau f34b1ae42c mt76: track rx airtime for airtime fairness and survey
Report total rx airtime for valid stations as BSS rx time in survey

mt7615 is left out for now, it will be supported later by reading
hardware counters instead of calculating airtime in software

Signed-off-by: Felix Fietkau <[email protected]>
2019-09-26 12:42:08 +02:00
Felix Fietkau b0429879ea mt76: rename mt76_driver_ops txwi_flags to drv_flags and include tx aligned4
This reduces the struct size and is useful for adding more flags later

Signed-off-by: Felix Fietkau <[email protected]>
2019-09-26 12:42:08 +02:00
Lorenzo BianconiandFelix Fietkau 0b01aceeef mt76: mt76x02u: move mt76x02u_mac_start in mt76x02-usb module
Unify mt76x02u_mac_start between mt76x2u and mt76x0u since the
code is shared between both drivers

Signed-off-by: Lorenzo Bianconi <[email protected]>
Signed-off-by: Felix Fietkau <[email protected]>
2019-09-26 12:04:20 +02:00
Lorenzo BianconiandFelix Fietkau c39488772d mt76: mt76x0u: reset counter starting the device
Remove mt76x02_mac_reset_counters from mt76x0_init_hardware since
it will be run starting the device

Signed-off-by: Lorenzo Bianconi <[email protected]>
Signed-off-by: Felix Fietkau <[email protected]>
2019-09-26 12:04:20 +02:00
Lorenzo BianconiandFelix Fietkau f3792b550f mt76: mt76x02: move mac_reset_counter in mt76x02_lib module
Unify mac_reset_counter routine and move it in mt76x02_lib module
since it is shared by all mt76x02 drivers (pci/usb)

Signed-off-by: Lorenzo Bianconi <[email protected]>
Signed-off-by: Felix Fietkau <[email protected]>
2019-09-26 12:04:20 +02:00
Colin Ian KingandFelix Fietkau b140512e73 mt76: mt76x0e: make array mt76x0_chan_map static const, makes object smaller
Don't populate the array mt76x0_chan_map on the stack but instead make it
static const. Makes the object code smaller by 80 bytes.

Before:
   text	   data	    bss	    dec	    hex	filename
   7685	   1192	      0	   8877	   22ad	mediatek/mt76/mt76x0/eeprom.o

After:
   text	   data	    bss	    dec	    hex	filename
   7541	   1256	      0	   8797	   225d	mediatek/mt76/mt76x0/eeprom.o

(gcc version 9.2.1, amd64)

Signed-off-by: Colin Ian King <[email protected]>
Signed-off-by: Felix Fietkau <[email protected]>
2019-09-26 12:04:20 +02:00
Stanislaw GruszkaandFelix Fietkau 496c78e4f0 mt76: mt76x0: remove unneeded return value on set channel
We allways return 0 from mt76x0_phy_set_channel(), no need to pass
return value upward.

Signed-off-by: Stanislaw Gruszka <[email protected]>
2019-09-05 17:49:41 +02:00
Stanislaw GruszkaandFelix Fietkau 1d2acd5639 mt76: mt76x0: remove redundant chandef copy
We set dev->mt76.chandef in mt76_set_channel() already.

Signed-off-by: Stanislaw Gruszka <[email protected]>
2019-09-05 17:49:41 +02:00
Stanislaw GruszkaandFelix Fietkau a0824197ab mt76: mt76x0e: disable 5GHz band for MT7630E
MT7630E hardware does support 5GHz, but we do not properly configure phy
for 5GHz channels. Scanning at this band not only do not show any APs
but also can hang the firmware.

Since vendor reference driver do not support 5GHz we don't know how
properly configure 5GHz channels. So disable this band for MT7630E .

Cc: [email protected]
Signed-off-by: Stanislaw Gruszka <[email protected]>
2019-08-22 09:35:19 +02:00
Lorenzo BianconiandFelix Fietkau a7fa326039 mt76: add default implementation for mt76_sw_scan/mt76_sw_scan_complete
Introduce a default implementation for mt76_sw_scan and
mt76_sw_scan_complete in mt76 module and remove duplicated code
since most of the drivers share the same implementation

Signed-off-by: Lorenzo Bianconi <[email protected]>
Signed-off-by: Felix Fietkau <[email protected]>
2019-08-22 09:26:30 +02:00
Lorenzo BianconiandFelix Fietkau c6dabfe953 mt76: mt76x02u: enable survey support
Introduce channel survey support for mt76x2u and mt76x0u drivers

Signed-off-by: Lorenzo Bianconi <[email protected]>
Signed-off-by: Felix Fietkau <[email protected]>
2019-08-21 13:02:33 +02:00
Lorenzo BianconiandFelix Fietkau 20f0c19672 mt76: mt76x02: introduce mt76x02_pre_tbtt_enable and mt76x02_beacon_enable macros
Improve code readability introducing mt76x02_pre_tbtt_enable and
mt76x02_beacon_enable utility macros

Signed-off-by: Lorenzo Bianconi <[email protected]>
Signed-off-by: Felix Fietkau <[email protected]>
2019-08-21 13:02:33 +02:00
Ryder LeeandFelix Fietkau f625afcedc mt76: switch to SPDX tag instead of verbose boilerplate text
No functional change intended.

Add SPDX identifiers to all remaining files in /mt76.

Signed-off-by: Ryder Lee <[email protected]>
Signed-off-by: Felix Fietkau <[email protected]>
2019-08-20 15:22:20 +02:00
Ryder LeeandFelix Fietkau c415c676e2 mt76: mt76x02: fix some checkpatch warnings
This fixes the following checkpatch warnings:

ERROR: code indent should use tabs where possible
CHECK: Alignment should match open parenthesis
CHECK: No space is necessary after a cast
CHECK: Please don't use multiple blank lines
CHECK: Avoid precedence issues in macro
WARNING: Statements should start on a tabstop
WARNING: Unnecessary space before function pointer arguments

Signed-off-by: Ryder Lee <[email protected]>
Signed-off-by: Felix Fietkau <[email protected]>
2019-08-20 15:22:20 +02:00
Lorenzo BianconiandFelix Fietkau 9dd1089a29 mt76: mt76u: reduce rx memory footprint
Reduce rx memory footprint allocating just one SG buffer since for the
moment we support just 3839B as maximal size of an A-MSDU.
Introduce different SG_MAX_SIZE definitions for TX and RX sides.
Moreover set q->buf_size to PAGE_SIZE even for SG case.

Signed-off-by: Lorenzo Bianconi <[email protected]>
Signed-off-by: Felix Fietkau <[email protected]>
2019-06-25 13:19:51 +02:00
Felix Fietkau d86d6efa72 mt76x0: fix RF frontend initialization for external PA
When loading EEPROM data from flash, the RF frontend settings need to be
initialized from flash data. Without this, the chip loads the wrong values
from its internal eFuse ROM.

Signed-off-by: Felix Fietkau <[email protected]>
2019-06-25 12:25:26 +02:00
Felix Fietkau 47ddf4b722 mt76: revert support for TX_NEEDS_ALIGNED4_SKBS
This didn't bring the performance benefit that I had hoped for, so the mac80211
patch for this will not make it upstream

Signed-off-by: Felix Fietkau <[email protected]>
2019-06-24 23:56:23 +02:00
Lorenzo BianconiandFelix Fietkau bd32a93e49 mt76: mt76x02: remove enable from mt76x02_edcca_init signature
Remove enable parameter from mt76x02_edcca_init routine signature since
it is always true

Signed-off-by: Lorenzo Bianconi <[email protected]>
Signed-off-by: Felix Fietkau <[email protected]>
2019-06-07 18:25:51 +02:00
Felix Fietkau 77d0e3378b mt76: fix setting chan->max_power
When setting chan->max_power after registering the wiphy, chan->max_reg_power
needs to be used as a limit

Signed-off-by: Felix Fietkau <[email protected]>
2019-05-31 22:03:13 +02:00
Lorenzo BianconiandFelix Fietkau 6e790e106a mt76: move pre_tbtt_tasklet in mt76_dev
Move pre_tbtt_tasklet tasklet in mt76_dev data structure since
it is used by all drivers

Signed-off-by: Lorenzo Bianconi <[email protected]>
Signed-off-by: Felix Fietkau <[email protected]>
2019-04-30 17:52:28 +02:00
Stanislaw GruszkaandFelix Fietkau 0e674c50a5 mt76x02: remove bogus mutex usage
mac80211 .start(), .stop() callbacks are never called concurrently with
other callbacks. The only concurencly is with mt76 works which we cancel
on stop() and schedule on start().

This fixes possible deadlock on cancel_delayed_work_sync(&dev->mac_work)
as mac_work also take mutex.

Signed-off-by: Stanislaw Gruszka <[email protected]>
2019-04-29 13:37:59 +02:00
Stanislaw GruszkaandFelix Fietkau 6c1cab9aba mt76usb: fix tx/rx stop
Disabling tasklets on stopping rx/tx is wrong. If blocked tasklet
is scheduled and we remove device we will get 100% cpu usage:

  PID USER      PR  NI    VIRT    RES    SHR S  %CPU  %MEM     TIME+ COMMAND
    9 root      20   0       0      0      0 R  93.8   0.0   1:47.19 ksoftirqd/0

by infinite loop in tasklet_action_common() and eventuall crash on next
mt76usb module load:

[ 2068.591964] RIP: 0010:tasklet_action_common.isra.17+0x66/0x100
[ 2068.591966] Code: 41 89 f5 eb 25 f0 48 0f ba 33 00 0f 83 b1 00 00 00 48 8b 7a 20 48 8b 42 18 e8 56 a3 b5 00 f0 80 23 fd 48 89 ea 48 85 ed 74 53 <48> 8b 2a 48 8d 5a 08 f0 48 0f ba 6a 08 01 72 0b 8b 42 10 85 c0 74
[ 2068.591968] RSP: 0018:ffff98758c34be58 EFLAGS: 00010206
[ 2068.591969] RAX: ffff98758e6966d0 RBX: ffff98756e69aef8 RCX: 0000000000000006
[ 2068.591970] RDX: 01060a053d060305 RSI: 0000000000000006 RDI: ffff98758e6966d0
[ 2068.591971] RBP: 01060a053d060305 R08: 0000000000000000 R09: 00000000000203c0
[ 2068.591971] R10: 000003ff65b34f08 R11: 0000000000000001 R12: ffff98758e6966d0
[ 2068.591972] R13: 0000000000000006 R14: 0000000000000040 R15: 0000000000000006
[ 2068.591974] FS:  0000000000000000(0000) GS:ffff98758e680000(0000) knlGS:0000000000000000
[ 2068.591975] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2068.591975] CR2: 00002c5f73a6cc20 CR3: 00000002f920a001 CR4: 00000000003606e0
[ 2068.591977] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 2068.591978] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 2068.591978] Call Trace:
[ 2068.591985]  __do_softirq+0xe3/0x30a
[ 2068.591989]  ? sort_range+0x20/0x20
[ 2068.591990]  run_ksoftirqd+0x26/0x40
[ 2068.591992]  smpboot_thread_fn+0xc5/0x160
[ 2068.591995]  kthread+0x112/0x130
[ 2068.591997]  ? kthread_create_on_node+0x40/0x40
[ 2068.591998]  ret_from_fork+0x35/0x40
[ 2068.591999] Modules linked in: ccm arc4 fuse rfcomm cmac bnep sunrpc snd_hda_codec_hdmi snd_soc_skl snd_soc_core snd_soc_acpi_intel_match snd_hda_codec_realtek snd_soc_acpi snd_hda_codec_generic snd_soc_skl_ipc snd_soc_sst_ipc snd_soc_sst_dsp snd_hda_ext_core iTCO_wdt snd_hda_intel intel_rapl iTCO_vendor_support x86_pkg_temp_thermal intel_powerclamp btusb mei_wdt coretemp btrtl snd_hda_codec btbcm btintel intel_cstate snd_hwdep intel_uncore uvcvideo snd_hda_core videobuf2_vmalloc videobuf2_memops intel_rapl_perf wmi_bmof videobuf2_v4l2 intel_wmi_thunderbolt snd_seq bluetooth joydev videobuf2_common snd_seq_device snd_pcm videodev media i2c_i801 snd_timer idma64 ecdh_generic intel_lpss_pci intel_lpss mei_me mei ucsi_acpi typec_ucsi processor_thermal_device intel_soc_dts_iosf intel_pch_thermal typec thinkpad_acpi wmi snd soundcore rfkill int3403_thermal int340x_thermal_zone int3400_thermal acpi_thermal_rel acpi_pad pcc_cpufreq uas usb_storage crc32c_intel i915 i2c_algo_bit nvme serio_raw
[ 2068.592033]  drm_kms_helper e1000e nvme_core drm video ipv6 [last unloaded: cfg80211]

Fortunate thing is that this not happen frequently, as scheduling
tasklet on blocked state is very exceptional, though might happen.

Due to different RX/TX tasklet processing fix is different for those.

For RX we have to assure rx_tasklet do fail to resubmit buffers
by poisoning urb's and kill the tasklet.

For TX we need to handle all stop cases properly (suspend, module
unload, device removal).

Signed-off-by: Stanislaw Gruszka <[email protected]>
2019-04-29 13:37:59 +02:00
Stanislaw GruszkaandFelix Fietkau bc9baa7b12 mt76x02u: remove bogus stop on suspend
On suspend mac80211 .stop callback is called before .suspend(), so
hw mac is already stopped and we do not have to do this again.

Signed-off-by: Stanislaw Gruszka <[email protected]>
2019-04-29 13:37:58 +02:00
Felix Fietkau 98c5359e96 Revert "mt76: fix potential deadlock on cancelling workqueues"
This reverts commit 3a7e6bbac3
to be replaced by upstream patch.

Signed-off-by: Felix Fietkau <[email protected]>
2019-04-29 13:37:40 +02:00
Lorenzo BianconiandFelix Fietkau a7dfcf2e24 mt76: move mac_work in mt76_dev
Move mac_work delayed work in mt76_dev data structure since
it is used by all drivers and it will be reused adding mac work to
mt7615

Signed-off-by: Lorenzo Bianconi <[email protected]>
2019-04-25 12:04:34 +02:00
Lorenzo BianconiandFelix Fietkau 61311d9b30 mt76: introduce mt76_free_device routine
Move mt76_tx_free in mt76_free_device routine in order to
unmap all txwi descriptors at module unload

Signed-off-by: Lorenzo Bianconi <[email protected]>
2019-04-25 12:04:34 +02:00
Stanislaw GruszkaandFelix Fietkau ffddb685a6 mt76x02u: check chip version on probe
Since some USB device IDs are duplicated between mt76x0u, mt7601u
and mt76x2u device, check chip version on probe and return error if
not match the driver.

Don't think this is serious issue, probe most likely will fail at
some other point for wrong device, but we do not have to configure
it if we know is not our device.

Reported-by: Xose Vazquez Perez <[email protected]>
Signed-off-by: Stanislaw Gruszka <[email protected]>
Signed-off-by: Kalle Valo <[email protected]>
2019-04-25 12:04:20 +02:00
Felix Fietkau a11b67348a mt76: fix tx power issues
- tx power is stored in the channels after ieee80211_register_hw, so
  chan->orig_mpwr needs to be updated as well
- for non-TSSI devices, mt76x2e needs to use a different target power value
  from the EEPROM
- fix a rounding error in a few places (need to round up, not down)

Signed-off-by: Felix Fietkau <[email protected]>
2019-03-27 12:54:48 +01:00
Stanislaw GruszkaandFelix Fietkau e9c017190e mt76usb: use usb_dev private data
Setup usb device private data. This allows to remove mt76u_buf->dev
and simplify some routines as no longer we need to get usb device
through usb interface.

Signed-off-by: Stanislaw Gruszka <[email protected]>
2019-03-24 08:24:28 +01:00
Stanislaw GruszkaandFelix Fietkau 65e634418c mt76: unify set_tim
All mt76 drivers (now also USB drivers) require empty .set_tim
callback. Add it to common mt76 module and use on all drivers.

Signed-off-by: Stanislaw Gruszka <[email protected]>
Signed-off-by: Felix Fietkau <[email protected]>
2019-03-24 08:22:22 +01:00
Stanislaw GruszkaandFelix Fietkau d4c740f071 mt76x02u: add mt76_release_buffered_frames
Create software MT_TXQ_PSD queue for USB and map it to MT_TXQ_VO
since we do not have USB endpoint for PSD. This should make
mt76_release_buffered_frames() work by sending released frames
via MT_TXQ_VO.

Signed-off-by: Stanislaw Gruszka <[email protected]>
Signed-off-by: Felix Fietkau <[email protected]>
2019-03-24 08:22:22 +01:00
Stanislaw GruszkaandFelix Fietkau dcccc04adc mt76x02u: add sta_ps
Add sta_ps callback but dont set WCID drop sicne registers for USB
can not be accessed from tasklet context.

Signed-off-by: Stanislaw Gruszka <[email protected]>
Signed-off-by: Felix Fietkau <[email protected]>
2019-03-24 08:22:22 +01:00
Stanislaw GruszkaandFelix Fietkau 37af803a2f mt76x02u: implement beacon_ops
Add implementation of beacon_ops for USB and exit function to
stop the timer if running when device is removed. Still no
actual work on pre tbtt event.

Signed-off-by: Stanislaw Gruszka <[email protected]>
Signed-off-by: Felix Fietkau <[email protected]>
2019-03-24 08:22:22 +01:00
Stanislaw GruszkaandFelix Fietkau 6370485deb mt76x02: introduce beacon_ops
Enabling/disableing TBTT and beacon will be diffrent for USB. Introduce
beacon_ops to encapsulate that and implement it for MMIO. USB
implementation is noop for now.

Signed-off-by: Stanislaw Gruszka <[email protected]>
Signed-off-by: Felix Fietkau <[email protected]>
2019-03-24 08:21:28 +01:00
Stanislaw GruszkaandFelix Fietkau f2a18f5a7f mt76x02: introduce mt76x02_beacon.c
Move most of beaconing code into separate file and separate beacon
initialization for USB and MMIO as pre TBTT implementation for USB
will be different.

Signed-off-by: Stanislaw Gruszka <[email protected]>
Signed-off-by: Felix Fietkau <[email protected]>
2019-03-24 08:20:43 +01:00
Felix Fietkau 3a7e6bbac3 mt76: fix potential deadlock on cancelling workqueues
mutex->lock must not be held while cancelling workqueues, because it is held
by the workqueue items themselves

Signed-off-by: Felix Fietkau <[email protected]>
2019-03-22 13:29:47 +01:00
Felix Fietkau 42ce040662 mt76: use TX_NEEDS_ALIGNED4_SKBS
Remove custom header padding insert code

Signed-off-by: Felix Fietkau <[email protected]>
2019-03-15 11:27:33 +01:00
Felix Fietkau 5323005150 mt76: move tx tasklet to struct mt76_dev
Allows it to be scheduled from core code

Signed-off-by: Felix Fietkau <[email protected]>
2019-03-14 22:37:30 +01:00
Lorenzo BianconiandFelix Fietkau efe9a473af mt76: mmio: move mt76_insert_hdr_pad in mt76_dma_tx_queue_skb
Introduce tx_aligned4_skbs in mt76_driver_ops and move
mt76_insert_hdr_pad in mt76_dma_tx_queue_skb. This is a preliminary
patch in order to unify tx dma mapping for mt76x02 and new chipsets

Signed-off-by: Lorenzo Bianconi <[email protected]>
Signed-off-by: Felix Fietkau <[email protected]>
2019-03-14 22:09:32 +01:00
Stanislaw GruszkaandFelix Fietkau abcb544579 mt76x02: do not enable RTS/CTS by default
My commit 26a7b5473191 ("mt76x02: set protection according to ht
operation element") enabled by default RTS/CTS protection for OFDM
and CCK traffic, because MT_TX_RTS_CFG_THRESH is configured to non
0xffff by initvals and .set_rts_threshold callback is not called by
mac80211 on initialization, only on user request or during
ieee80211_reconfig() (suspend/resuem or restart_hw).

Enabling RTS/CTS cause some problems when sending probe request
frames by hcxdumptool penetration tool, but I expect it can cause
other issues on different scenarios.

Restore previous setting of RTS/CTS being disabled by default for
OFDM/CCK by changing MT_TX_RTS_CFG_THRESH initvals to 0xffff.

Fixes: 26a7b5473191 ("mt76x02: set protection according to ht operation element")
Signed-off-by: Stanislaw Gruszka <[email protected]>
2019-03-12 16:46:26 +01:00
Stanislaw GruszkaandFelix Fietkau e4250c91f9 mt76usb: remove usb_mcu.c
Don't need separate file just for kmalloc/kfree.

Signed-off-by: Stanislaw Gruszka <[email protected]>
Signed-off-by: Felix Fietkau <[email protected]>
2019-02-26 12:26:02 +01:00
Stanislaw GruszkaandFelix Fietkau 2437a9ad7b mt76usb: use synchronous msg for mcu command responses
Use usb_bulk_msg for reading MCU command responses. This simplify code
a lot.

Together with 97a3005759c ("mt76usb: allow mt76u_bulk_msg be used
for reads") it also fix possible problems with rx data buffers
not being aligned and contained within single page. After doing
page_frag_alloc(1024) consecutive page_frag_alloc(PAGE_SIZE) will
alloc PAGE_SIZE buffer at PAGE_SIZE - 1024 offset.

Signed-off-by: Stanislaw Gruszka <[email protected]>
Signed-off-by: Felix Fietkau <[email protected]>
2019-02-26 12:26:02 +01:00
Felix Fietkau 52161d2e86 mt76: mt76x02: fix ED/CCA enabling/disabling
ED/CCA needs to be disable before stopping the MAC to avoid hangs from tx
being blocked. It must only be enabled again after the MAC has been started
again.
In many places this wasn't done properly, so fix this by always clearing
the relevant ED/CCA bits in mt76x2_mac_stop and set it up again after
channel change or calibration is done

Signed-off-by: Felix Fietkau <[email protected]>
2019-02-25 17:29:20 +01:00
Stanislaw GruszkaandFelix Fietkau f18e03a8b6 mt76x0u: fix suspend/resume
We need to reset MCU and do other initializations on resume otherwise
MT7610U device will fail to initialize, what cause system hung due to
USB requests timeouts.

Patch fixes 4.19 -> 4.20 regression.

Cc: [email protected] # 4.20+
Signed-off-by: Stanislaw Gruszka <[email protected]>
Acked-by: Lorenzo Bianconi <[email protected]>
Signed-off-by: Kalle Valo <[email protected]>
2019-02-18 20:39:41 +01:00
Lorenzo BianconiandFelix Fietkau 1e4db14016 mt76: usb: move mt76u_check_sg in usb.c
Move mt76u_check_sg routine in usb.c and introduce sg_en variable
in mt76_usb in order to check if scatter-gather is supported by
mt76u layer

Signed-off-by: Lorenzo Bianconi <[email protected]>
Signed-off-by: Felix Fietkau <[email protected]>
2019-02-18 20:39:41 +01:00