Commit Graph
94 Commits
Author SHA1 Message Date
Lorenzo BianconiandFelix Fietkau 0034ae2890 wifi: mt76: mt7921: move init shared code in mt792x-lib module
Reduce duplicated code moving init shared code in mt792x-lib module.

Signed-off-by: Lorenzo Bianconi <[email protected]>
Signed-off-by: Deren Wu <[email protected]>
Signed-off-by: Felix Fietkau <[email protected]>
2023-07-26 13:15:57 +02:00
Lorenzo BianconiandFelix Fietkau 93f821cce8 wifi: mt76: mt792x: introduce mt792x-lib module
mt792x-lib module will contain the shared code between mt7921 and new
MT79 WiFi7 chipset

Signed-off-by: Lorenzo Bianconi <[email protected]>
Signed-off-by: Deren Wu <[email protected]>
Signed-off-by: Felix Fietkau <[email protected]>
2023-07-26 13:15:56 +02:00
Lorenzo BianconiandFelix Fietkau ff306af07e wifi: mt76: mt7921: move mt792x_hw_dev in mt792x.h
This is a preliminary patch to introduce WiFi7 chipset support

Signed-off-by: Lorenzo Bianconi <[email protected]>
Signed-off-by: Deren Wu <[email protected]>
Signed-off-by: Felix Fietkau <[email protected]>
2023-07-26 11:40:51 +02:00
Lorenzo BianconiandFelix Fietkau 68508aab42 wifi: mt76: mt7921: move mt792x_mutex_{acquire/release} in mt792x.h
This is a preliminary patch to introduce WiFi7 chipset support

Signed-off-by: Lorenzo Bianconi <[email protected]>
Signed-off-by: Deren Wu <[email protected]>
Signed-off-by: Felix Fietkau <[email protected]>
2023-07-26 11:40:51 +02:00
Lorenzo BianconiandFelix Fietkau 2485b4222d wifi: mt76: mt7921: rename mt7921_dev in mt792x_dev
This is a preliminary patch to introduce WiFi7 chipset support

Signed-off-by: Lorenzo Bianconi <[email protected]>
Signed-off-by: Deren Wu <[email protected]>
Signed-off-by: Felix Fietkau <[email protected]>
2023-07-26 11:40:51 +02:00
Lorenzo BianconiandFelix Fietkau 80234e64e7 wifi: mt76: mt7921: rename mt7921_phy in mt792x_phy
This is a preliminary patch to introduce WiFi7 chipset support

Signed-off-by: Lorenzo Bianconi <[email protected]>
Signed-off-by: Deren Wu <[email protected]>
Signed-off-by: Felix Fietkau <[email protected]>
2023-07-26 11:40:51 +02:00
Lorenzo BianconiandFelix Fietkau 6ed8a8bdc7 wifi: mt76: mt7921: rename mt7921_sta in mt792x_sta
This is a preliminary patch to introduce WiFi7 chipset support

Signed-off-by: Lorenzo Bianconi <[email protected]>
Signed-off-by: Deren Wu <[email protected]>
Signed-off-by: Felix Fietkau <[email protected]>
2023-07-26 11:40:51 +02:00
Lorenzo BianconiandFelix Fietkau 02515b6b90 wifi: mt76: mt7921: rename mt7921_vif in mt792x_vif
This is a preliminary patch to introduce WiFi7 chipset support

Signed-off-by: Lorenzo Bianconi <[email protected]>
Signed-off-by: Deren Wu <[email protected]>
Signed-off-by: Felix Fietkau <[email protected]>
2023-07-26 11:40:51 +02:00
Lorenzo BianconiandFelix Fietkau b19d3ad88e wifi: mt76: mt7921: rely on shared sta_poll_list and sta_poll_lock
Rely on sta_poll_list and sta_poll_lock fields in mt76_dev structure
and get rid of private copies.

Signed-off-by: Lorenzo Bianconi <[email protected]>
Signed-off-by: Felix Fietkau <[email protected]>
2023-06-22 19:24:03 +02:00
Ben GreearandFelix Fietkau 8d52436ee0 wifi: mt76: mt7921: Support temp sensor
Allow sensors tool to read radio's temperature, example:

mt7921_phy17-pci-1800
Adapter: PCI adapter
temp1:        +72.0°C

Signed-off-by: Ben Greear <[email protected]>
Signed-off-by: Felix Fietkau <[email protected]>
2023-06-22 18:39:12 +02:00
Ming Yen HsiehandFelix Fietkau a729242363 wifi: mt76: mt7921: fix non-PSC channel scan fail
Due to the scan command may only request legacy bands and PSC channel
in 6GHz band, we are unable to scan the APs on non-PSC channel in this
case. Enable WIPHY_FLAG_SPLIT_SCAN_6GHZ to support non-PSC channel
(obtained during scan on legacy bands) in 6GHz scan request.

Fixes: 50ac15a511e3 ("mt76: mt7921: add 6GHz support")
Signed-off-by: Ming Yen Hsieh <[email protected]>
Signed-off-by: Deren Wu <[email protected]>
Signed-off-by: Felix Fietkau <[email protected]>
2023-06-22 17:52:14 +02:00
Ben GreearandFelix Fietkau 42dace9ce2 wifi: mt76: mt7921: Fix use-after-free in fw features query.
Stop referencing 'features' memory after release_firmware is called.

Fixes this crash:

RIP: 0010:mt7921_check_offload_capability+0x17d
mt7921_pci_probe+0xca/0x4b0
...

Signed-off-by: Ben Greear <[email protected]>
Signed-off-by: Lorenzo Bianconi <[email protected]>
Acked-by: Felix Fietkau <[email protected]>
Signed-off-by: Kalle Valo <[email protected]>
Link: https://lore.kernel.org/r/51fd8f76494348aa9ecbf0abc471ebe47a983dfd.1679502607.git.lorenzo@kernel.org
2023-06-22 17:48:20 +02:00
Lorenzo BianconiandFelix Fietkau db5a8f70ff wifi: mt76: move shared mac definitions in mt76_connac2_mac.h
Move some mac shared definitions between mt7996, mt7921 and mt7915 in
mt76_connac2_mac.h.

Signed-off-by: Lorenzo Bianconi <[email protected]>
Signed-off-by: Felix Fietkau <[email protected]>
2023-04-18 11:44:46 +02:00
Lorenzo BianconiandFelix Fietkau 3963ab2fc9 wifi: mt76: mt7921: get rid of eeprom.h
eeprom.h is mostly empty for mt7921, so get rid of it.

Signed-off-by: Lorenzo Bianconi <[email protected]>
Signed-off-by: Felix Fietkau <[email protected]>
2023-04-18 11:44:46 +02:00
Sean WangandFelix Fietkau 46f28e7574 wifi: mt76: mt7921: enable p2p support
Introduce p2p-go/p2p-client support to mt7921 driver

CONNECTION_P2P_GC/GO is not supported with the current firmware
so we added mt76_dev to mt76_connac_mcu_sta_basic_tlv signature to
use CONNECTION_INFRA_STA/AP instead for p2p-client and p2p-go
respectively to make it work.

Signed-off-by: Sean Wang <[email protected]>
Signed-off-by: Felix Fietkau <[email protected]>
2023-04-17 17:36:20 +02:00
Lorenzo BianconiandFelix Fietkau c66e7a1a69 wifi: mt76: mt7921: introduce mt7921_get_mac80211_ops utility routine
Since the fw offload capability check is shared between pci,usb and sdio
devices, move it in common init code and reduce code duplication.

Signed-off-by: Lorenzo Bianconi <[email protected]>
Signed-off-by: Felix Fietkau <[email protected]>
2023-04-17 16:10:14 +02:00
Felix Fietkau 8ecf551c6d wifi: mt76: set NL80211_EXT_FEATURE_CAN_REPLACE_PTK0 on supported drivers
Drivers that do not generate IV/PN in software can safely rekey PTK0

Signed-off-by: Felix Fietkau <[email protected]>
2023-03-30 11:07:53 +02:00
Neil ChenandFelix Fietkau 822f060b9d wifi: mt76: mt7921: fix rx filter incorrect by drv/fw inconsistent
The rx filter, in mt7921 series, may be changed in fw operation. There is
a racing problem if rx filter controlled by both driver and firmware at
the same time. To avoid this issue, let mt7921 driver set rx filter by new
command MCU_CE_CMD_SET_RX_FILTER and allow the firmware controlling it
only.

Reviewed-by: Lorenzo Bianconi <[email protected]>
Co-developed-by: Deren Wu <[email protected]>
Signed-off-by: Deren Wu <[email protected]>
Signed-off-by: Neil Chen <[email protected]>
Tested-by: AngeloGioacchino Del Regno <[email protected]>
Signed-off-by: Felix Fietkau <[email protected]>
2023-01-23 10:50:59 +01:00
Deren WuandFelix Fietkau f1f8bae609 wifi: mt76: mt7921: add ack signal support
This reports signal strength of ACK packets from the peer as measured
at each interface.

Reviewed-by: Ryder Lee <[email protected]>
Signed-off-by: Deren Wu <[email protected]>
Reviewed-by: AngeloGioacchino Del Regno <[email protected]>
Signed-off-by: Felix Fietkau <[email protected]>
2023-01-23 10:32:48 +01:00
Sean WangandFelix Fietkau 7fae1de12a wifi: mt76: mt7921: resource leaks at mt7921_check_offload_capability()
Fixed coverity issue with resource leaks at variable "fw" going out of
scope leaks the storage it points to mt7921_check_offload_capability().

Reported-by: coverity-bot <[email protected]>
Addresses-Coverity-ID: 1527806 ("Resource leaks")
Fixes: 034ae28b56f1 ("wifi: mt76: mt7921: introduce remain_on_channel support")
Signed-off-by: Sean Wang <[email protected]>
Signed-off-by: Felix Fietkau <[email protected]>
2022-12-10 13:11:05 +01:00
Sean WangandFelix Fietkau 2575de3aea wifi: mt76: mt7921: introduce chanctx support
The firmware can have the capability to manage the channel context
scheduling on multiple roles running on the device including Station,
AP and P2P GC/GO mode (will be extended based on the future patchset)
to help users sharing the network with others on a single device.

The firmware is able to support the channel chanctx up to 2 interface
simultaneously running on the different channels.

Another thing to be noted is that before the driver is going sent out the
management frames, the driver has to get the privilege from the firmware
to occupy the current channel context until the frame handshake is
completed and then get the privilege back to the firmware.

Co-developed-by: Deren Wu <[email protected]>
Signed-off-by: Deren Wu <[email protected]>
Signed-off-by: Sean Wang <[email protected]>
Signed-off-by: Felix Fietkau <[email protected]>
2022-12-10 13:11:04 +01:00
Felix Fietkau ec46d7486a sync with upstream
Signed-off-by: Felix Fietkau <[email protected]>
2022-12-10 13:11:04 +01:00
YN ChenandFelix Fietkau 8e309b5560 wifi: mt76: mt7921: fix wrong power after multiple SAR set
We should update CLC config before SAR set to synchronize all
related settings.

Fixes: 23bdc5d8cadf ("wifi: mt76: mt7921: introduce Country Location Control support")
Signed-off-by: YN Chen <[email protected]>
Signed-off-by: Deren Wu <[email protected]>
Signed-off-by: Felix Fietkau <[email protected]>
2022-11-19 17:57:22 +01:00
Sean WangandFelix Fietkau 6ca31dc64d wifi: mt76: mt7921: introduce remain_on_channel support
Introduce remain_on_channel support. Additionally, we add
mt7921_check_offload_capability to disable .remain_on_channel and
.cancel_remain_on_channel and related configuration because those
operations would rely on the fundamental MCU commands that will be only
supported with newer firmware.

Co-developed-by: Deren Wu <[email protected]>
Signed-off-by: Deren Wu <[email protected]>
Signed-off-by: Sean Wang <[email protected]>
Signed-off-by: Felix Fietkau <[email protected]>
2022-11-19 17:54:20 +01:00
Ming Yen HsiehandFelix Fietkau ebbd68842e wifi: mt76: mt7921: introduce Country Location Control support
Country Location Control (CLC) is an additional control for country rules
in firmware. We introduce this new feature to make sure mt7921 series
working properly in all region.

The addtional policies would be put into firmware based on differnt
regions. mt76 driver should be in charge of submitting per region policy.

Reviewed-by: Sean Wang <[email protected]>
Tested-by: YN Chen <[email protected]>
Co-developed-by: Deren Wu <[email protected]>
Signed-off-by: Deren Wu <[email protected]>
Signed-off-by: Ming Yen Hsieh <[email protected]>
Signed-off-by: Felix Fietkau <[email protected]>
2022-09-15 13:15:49 +02:00
Sean WangandFelix Fietkau 7fd299e3c9 mt76: mt7921: enable HW beacon filter in the initialization stage
The current driver has worked with HW beacon filter and connection
monitor all the way, here we move the enablement into the initialization
stage like other HW features being done to get rid of others are
confused why these configurations would be changed at runtime.

We still leave a way to turn off these offload features in debugfs knobs
but that is just for debugging purposes.

Tested-by: Deren Wu <[email protected]>
Signed-off-by: Sean Wang <[email protected]>
Signed-off-by: Felix Fietkau <[email protected]>
2022-07-11 13:38:17 +02:00
Deren WuandFelix Fietkau fd3958970e mt76: mt7921: enlarge maximum VHT MPDU length to 11454
Enlarge maximum MPDU length to 11454 that both mt7921/mt7922 can support.
After this fixing, we can get better performance.

Fixes: 5c14a5f944b9 ("mt76: mt7921: introduce mt7921e support")
Tested-by: Ming Yen Hsieh <[email protected]>
Signed-off-by: Deren Wu <[email protected]>
Signed-off-by: Felix Fietkau <[email protected]>
2022-06-21 20:47:36 +02:00
Deren WuandFelix Fietkau 8a04f1b046 mt76: mt7921: fix aggregation subframes setting to HE max
mt7921/mt7922 support HE max aggregation subframes 256 for both tx/rx.
Get better throughput then before.

Fixes: 94bb18b03d43 ("mt76: mt7921: fix max aggregation subframes setting")
Tested-by: Ming Yen Hsieh <[email protected]>
Reviewed-by: Sean Wang <[email protected]>
Signed-off-by: Deren Wu <[email protected]>
Signed-off-by: Felix Fietkau <[email protected]>
2022-06-17 12:16:03 +02:00
Deren WuandFelix Fietkau d6ae3505ac mt76: enable the VHT extended NSS BW feature
According IEEE Std 802.11-2020, its definition is:
Indicates whether the STA is capable of interpreting the Extended NSS BW
Support subfield of the VHT Capabilities Information field.

Some APs, such as Xiaomi AX6000, would check this one for BW settings.
mt76 driver can get max BW capability only if the this field is confgured
properly.

Reviewed-by: Ryder Lee <[email protected]>
Signed-off-by: Ming Yen Hsieh <[email protected]>
Signed-off-by: Deren Wu <[email protected]>
Signed-off-by: Felix Fietkau <[email protected]>
2022-06-17 12:14:22 +02:00
Deren WuandFelix Fietkau 8c27300b42 mt76: mt7921: introduce ACPI SAR config in tx power
Add new function mt7921_set_tx_sar_pwr() to update SAR power from
.set_sar_specs and ACPI setting. Both settings would be merged into
mt76_freq_range_power for final tx power value.

Reviewed-by: Sean Wang <[email protected]>
Co-developed-by: Ming Yen Hsieh <[email protected]>
Signed-off-by: Ming Yen Hsieh <[email protected]>
Signed-off-by: Deren Wu <[email protected]>
Signed-off-by: Felix Fietkau <[email protected]>
2022-06-02 21:39:30 +02:00
Deren WuandFelix Fietkau 268ce38e9e mt76: mt7921: introduce ACPI SAR support
In ACPI SAR enabled device, mt7921 should read power limit in ACPI config.
The limit value would be applied to regular tx power settings in mt76.

Two major functionalities added:
1. Get SAR power table through ACPI.
2. Read power in Dynamic/Geo SAR table for tx power limit.

Table note
MTDS: Dynamic SAR table
MTGS: Geo SAR table
MTCL: Country List table (for 6GHz support)

Reviewed-by: Sean Wang <[email protected]>
Co-developed-by: Quan Zhou <[email protected]>
Signed-off-by: Quan Zhou <[email protected]>
Co-developed-by: Ming Yen Hsieh <[email protected]>
Signed-off-by: Ming Yen Hsieh <[email protected]>
Signed-off-by: Deren Wu <[email protected]>
Signed-off-by: Felix Fietkau <[email protected]>
2022-06-02 21:39:30 +02:00
Deren WuandFelix Fietkau 8e87669eef mt76: mt7921: add ipv6 NS offload support
Add ipv6 NS offload for WoWLAN state.

Tested in this way:
1. Put device-A into WoW state.
2. ping6 from device-B to device-A.
3. In sniffer, see Neighbour advertisement from device-A.

Reviewed-by: Sean Wang <[email protected]>
Signed-off-by: Deren Wu <[email protected]>
Signed-off-by: Ming Yen Hsieh <[email protected]>
Signed-off-by: Felix Fietkau <[email protected]>
2022-05-12 11:33:17 +02:00
Sean WangandFelix Fietkau 506bb0605e mt76: mt7921: Add AP mode support
add AP mode support to mt7921 that can work for mt7921[e,s,u]
with the common code.

Tested-by: Deren Wu <[email protected]>
Tested-by: Lorenzo Bianconi <[email protected]>
Signed-off-by: Sean Wang <[email protected]>
Signed-off-by: Felix Fietkau <[email protected]>
2022-04-07 12:22:27 +02:00
Lorenzo BianconiandFelix Fietkau 053668acda mt76: mt7921: move mt7921_init_hw in a dedicated work
Firmware initialization can take a while. Move mt7921_init_hw routine in
a dedicated work in order to not slow down bootstrap process.

Tested-by: Deren Wu <[email protected]>
Signed-off-by: Lorenzo Bianconi <[email protected]>
Signed-off-by: Felix Fietkau <[email protected]>
2022-03-15 10:41:43 +01:00
Lorenzo BianconiandFelix Fietkau b0c60d5252 mt76: mt7921: add mt7921u driver
Introduce support for MT7921U 802.11ax 2x2:2SS wireless devices.

Tested-by: Sean Wang <[email protected]>
Tested-by: Deren Wu <[email protected]>
Signed-off-by: Lorenzo Bianconi <[email protected]>
Signed-off-by: Felix Fietkau <[email protected]>
2022-03-15 10:41:43 +01:00
Lorenzo BianconiandFelix Fietkau c03e095eee mt76: mt7921: disable runtime pm for usb
Runtime-pm is not currently supported by usb driver

Tested-by: Sean Wang <[email protected]>
Signed-off-by: Lorenzo Bianconi <[email protected]>
Signed-off-by: Felix Fietkau <[email protected]>
2022-03-15 10:41:43 +01:00
Sean WangandFelix Fietkau e3e3562f8f mt76: mt7921s: run sleep mode by default
Apply sleep mode by default to reduce power consumption as possible.

Signed-off-by: Sean Wang <[email protected]>
Acked-by: Lorenzo Bianconi <[email protected]>
Signed-off-by: Felix Fietkau <[email protected]>
2022-01-28 14:50:18 +01:00
Lorenzo BianconiandFelix Fietkau 68c5aa56f5 mt76: mt7921: toggle runtime-pm adding a monitor vif
Toggle runtime-pm and deep-sleep configuration adding/removing
a montior vif in order to forward all tx/rx frames to mac80211.

Signed-off-by: Lorenzo Bianconi <[email protected]>
Tested-by: Sven Eckelmann <[email protected]>
Signed-off-by: Felix Fietkau <[email protected]>
2022-01-14 14:58:32 +01:00
Lorenzo BianconiandFelix Fietkau 9a8fc6636d mt76: move sar_capa configuration in common code
Move wiphy SAR capability configuration in mt76 module and remove
duplicated code.

Signed-off-by: Lorenzo Bianconi <[email protected]>
Signed-off-by: Felix Fietkau <[email protected]>
2021-12-03 10:18:57 +01:00
Deren WuandFelix Fietkau 00b6f497e2 mt76: mt7921: introduce 160 MHz channel bandwidth support
Introduce the basic configuration for BW160 capability in 7922

Signed-off-by: Deren Wu <[email protected]>
Signed-off-by: Felix Fietkau <[email protected]>
2021-11-21 20:26:13 +01:00
Lorenzo BianconiandFelix Fietkau 0f49a22314 mt76: mt7921: disable 4addr capability
4addr is not supported by the driver/firmware yet

Signed-off-by: Lorenzo Bianconi <[email protected]>
Signed-off-by: Felix Fietkau <[email protected]>
2021-10-23 07:27:06 +02:00
Sean WangandFelix Fietkau 3143118baf mt76: mt7921s: add reset support
Introduce wifi chip reset support for mt7921 device to recover
mcu hangs or abnormal wifi system.

Tested-by: Deren Wu <[email protected]>
Acked-by: Lorenzo Bianconi <[email protected]>
Co-developed-by: Deren Wu <[email protected]>
Signed-off-by: Deren Wu <[email protected]>
Signed-off-by: Sean Wang <[email protected]>
Signed-off-by: Felix Fietkau <[email protected]>
2021-10-19 12:15:59 +02:00
Sean WangandFelix Fietkau ce3706a65c mt76: mt7921: introduce mt7921s support
Introduce support for mt7921s 802.11ax (Wi-Fi 6) 2x2:2SS chipset.

Tested-by: Deren Wu <[email protected]>
Co-developed-by: Lorenzo Bianconi <[email protected]>
Signed-off-by: Lorenzo Bianconi <[email protected]>
Signed-off-by: Sean Wang <[email protected]>
Signed-off-by: Felix Fietkau <[email protected]>
2021-10-19 12:15:59 +02:00
Sean WangandFelix Fietkau b2d9a1748a mt76: mt7921: rely on mcu_get_nic_capability
Rely on mcu_get_nic_capability to obtain Tx quota information
for the SDIO device, get PHY capability, MAC address and then we can
totally drop mt7921/eeprom.c and any unnecessary code.

Noting that mt76_connac_mcu_get_nic_capability should be run before set
flag MT76_STATE_MCU_RUNNING being set to setup the proper parameters
like Tx quota control before the device is started to running.

Tested-by: Deren Wu <[email protected]>
Acked-by: Lorenzo Bianconi <[email protected]>
Signed-off-by: Sean Wang <[email protected]>
Signed-off-by: Felix Fietkau <[email protected]>
2021-10-19 12:15:59 +02:00
Sean WangandFelix Fietkau 6cf8248c1a mt76: mt7921: add MT7921_COMMON module
This is a preliminary patch to introduce mt7921s support.

MT7921_COMMON module grouping bus independent objects the both mt7921e and
mt7921s can share with and have to rely on.

Tested-by: Deren Wu <[email protected]>
Acked-by: Lorenzo Bianconi <[email protected]>
Signed-off-by: Sean Wang <[email protected]>
Signed-off-by: Felix Fietkau <[email protected]>
2021-10-19 12:15:59 +02:00
Sean WangandFelix Fietkau 1c8418207c mt76: mt7921: refactor init.c to be bus independent
This is a preliminary patch to introduce mt7921s support.

Make init.c reusable between mt7921s and mt7921e

Tested-by: Deren Wu <[email protected]>
Acked-by: Lorenzo Bianconi <[email protected]>
Signed-off-by: Sean Wang <[email protected]>
Signed-off-by: Felix Fietkau <[email protected]>
2021-10-19 12:15:27 +02:00
Sean WangandFelix Fietkau 6556bddf26 mt76: mt7921: refactor mcu.c to be bus independent
This is a preliminary patch to introduce mt7921s support.

Make mcu.c reusable between mt7921s and mt7921e

Tested-by: Deren Wu <[email protected]>
Acked-by: Lorenzo Bianconi <[email protected]>
Signed-off-by: Sean Wang <[email protected]>
Signed-off-by: Felix Fietkau <[email protected]>
2021-10-19 12:15:27 +02:00
Sean WangandFelix Fietkau 537ed88dd2 mt76: mt7921: robustify hardware initialization flow
Robustify hardware initialization in the current driver probing flow
to get rid of the device is possibly lost after the machine boot due
to possible firmware abnormal state by trying to recover the failure
with more chances.

Tested-by: Leon Yen <[email protected]>
Tested-by: YN Chen <[email protected]>
Signed-off-by: Sean Wang <[email protected]>
Signed-off-by: Felix Fietkau <[email protected]>
2021-09-24 20:37:04 +02:00
Lorenzo BianconiandFelix Fietkau 4dc7f3db57 mt76: mt7921: remove mcu rate reporting code
Remove unused tx rate reporting through mcu tx done event since
now tx status is fully supported

Signed-off-by: Lorenzo Bianconi <[email protected]>
Signed-off-by: Felix Fietkau <[email protected]>
2021-09-24 19:27:14 +02:00
Sean WangandFelix Fietkau d7c4698435 mt76: mt7921: fix the inconsistent state between bind and unbind
We shouldn't put back the device into fw own state after wifi reset at
driver unbind stage to fix the following error because that is not the
consistent state the current driver bind stage expects.

localhost ~ # echo 0000:01:00.0 > /sys/bus/pci/drivers/mt7921e/unbind
localhost ~ # echo 0000:01:00.0 > /sys/bus/pci/drivers/mt7921e/bind
...
[  481.172969] mt7921e 0000:01:00.0: ASIC revision: feed0000
[  482.133547] mt7921e: probe of 0000:01:00.0 failed with error -110
-bash: echo: write error: No such device

Fixes: c1af184ba830 ("mt76: mt7921: fix dma hang in rmmod")
Co-developed-by: YN Chen <[email protected]>
Signed-off-by: YN Chen <[email protected]>
Signed-off-by: Sean Wang <[email protected]>
Tested-by: Chen-Yu Tsai <[email protected]>
Signed-off-by: Felix Fietkau <[email protected]>
2021-09-24 17:42:06 +02:00