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ulli-kroll / rtw88-usb

rtw88 family usb driver for linux rtl8723du rtl8822bu rtl8821cu rtl8822cu
GNU General Public License v2.0
51 stars 15 forks source link

rtw_8821cu fails to load on aarch64 kernel 5.4.70 with embedded USB #12

Open Pix13 opened 3 years ago

Pix13 commented 3 years ago

Hi, i'm doing a quick package of your driver as an OpenWRT feed ( https://github.com/Pix13/openwrt-rtw88-usb-feed ), to use on a Rock Pi E SBC, but when loading the driver outputs a warning, and fails to load:

[ 7.174342] rtw_8821cu 1-1:1.2: USB: 2 [ 7.194416] rtw_8821cu 1-1:1.2: Firmware version 24.5.0, H2C version 12 [ 7.463526] ------------[ cut here ]------------ [ 7.463945] wiphy should have REGULATORY_CUSTOM_REG [ 7.464478] WARNING: CPU: 0 PID: 254 at backports-5.8-1/net/wireless/reg.c:2349 wiphy_apply_custom_regulatory+0xb0/0x230 [cfg80211] [ 7.465507] Modules linked in: rtw88_8821cu(+) rtw88_8821c pppoe ppp_async iptable_nat xt_state xt_nat xt_conntrack xt_REDIRECT xt_MASQUERADE xt_FLOWOFFLOAD rtw88_usb rtw88_core pppox ppp_generic nf_nat nf_flow_table_hw nf_flow_table nf_conntrack_rtcache nf_conntrack mac80211 ipt_REJECT cfg80211 xt_time xt_tcpudp xt_multiport xt_mark xt_mac xt_limit xt_comment xt_TCPMSS xt_LOG wireguard slhc nf_reject_ipv4 nf_log_ipv4 nf_defrag_ipv6 nf_defrag_ipv4 iptable_mangle iptable_filter ip_tables crc_ccitt compat nf_log_ipv6 nf_log_common ip6table_mangle ip6table_filter ip6_tables ip6t_REJECT x_tables nf_reject_ipv6 ip6_udp_tunnel udp_tunnel gpio_button_hotplug [ 7.470566] CPU: 0 PID: 254 Comm: kmodloader Not tainted 5.4.70 #0 [ 7.471104] Hardware name: Radxa ROCK Pi E (DT) [ 7.471501] pstate: 60000005 (nZCv daif -PAN -UAO) [ 7.471927] pc : wiphy_apply_custom_regulatory+0xb0/0x230 [cfg80211] [ 7.472487] lr : wiphy_apply_custom_regulatory+0xb0/0x230 [cfg80211] [ 7.473040] sp : ffff800011483830 [ 7.473331] x29: ffff800011483830 x28: ffff80001012bda0 [ 7.473796] x27: 00000000ffffffed x26: ffff800010968be8 [ 7.474262] x25: 0000000fffffffe0 x24: ffff800008a374f8 [ 7.474726] x23: ffff00003b006a40 x22: ffff00003b0002e0 [ 7.475190] x21: ffff800008a354c0 x20: ffff00003b0002e0 [ 7.475656] x19: ffff00003b002640 x18: 000000000000001b [ 7.476120] x17: 000000000000003d x16: 0000000000000004 [ 7.476584] x15: ffff00003b002813 x14: ffff800010c0f090 [ 7.477049] x13: 0000000000000000 x12: ffff800010c0e000 [ 7.477513] x11: ffff800010b9a000 x10: 0000000000000010 [ 7.477977] x9 : 0000000000000000 x8 : 5355435f59524f54 [ 7.478442] x7 : 414c554745522065 x6 : 0000000000000136 [ 7.478906] x5 : 0000000000000000 x4 : 0000000000000000 [ 7.479370] x3 : 00000000ffffffff x2 : ffff800010b9a0a8 [ 7.479836] x1 : ffff00003c5ad080 x0 : 0000000000000027 [ 7.480300] Call trace: [ 7.480524] wiphy_apply_custom_regulatory+0xb0/0x230 [cfg80211] [ 7.481054] rtw_regd_init+0x13c/0x148 [rtw88_core] [ 7.481485] rtw_register_hw+0x114/0x2f8 [rtw88_core] [ 7.481928] rtw_usb_probe+0x4d0/0x1a78 [rtw88_usb] [ 7.482358] 0xffff800008a8d014 [ 7.482641] usb_probe_interface+0xe8/0x280 [ 7.483012] really_probe+0xd4/0x328 [ 7.483328] driver_probe_device+0x54/0xe8 [ 7.483687] device_driver_attach+0x6c/0x78 [ 7.484055] driver_attach+0x54/0xd0 [ 7.484385] bus_for_each_dev+0x60/0x98 [ 7.484723] driver_attach+0x20/0x28 [ 7.485038] bus_add_driver+0x178/0x1d8 [ 7.485374] driver_register+0x60/0x110 [ 7.485711] usb_register_driver+0x78/0x148 [ 7.486079] init_module+0x28/0x1000 [rtw88_8821cu] [ 7.486510] do_one_initcall+0x74/0x1c8 [ 7.486851] do_init_module+0x50/0x1f0 [ 7.487181] load_module+0x1c2c/0x2088 [ 7.487512] __do_sys_init_module+0x154/0x200 [ 7.487894] arm64_sys_init_module+0x18/0x20 [ 7.488287] el0_svc_common.constprop.1+0x7c/0x100 [ 7.488707] el0_svc_handler+0x20/0x80 [ 7.489037] el0_svc+0x8/0x200 [ 7.489305] ---[ end trace 4f0b9426f1b54e2a ]--- [ 7.489787] ------------[ cut here ]------------ [ 7.490204] WARNING: CPU: 0 PID: 254 at backports-5.8-1/net/wireless/reg.c:2363 wiphy_apply_custom_regulatory+0xbc/0x230 [cfg80211] [ 7.491231] Modules linked in: rtw88_8821cu(+) rtw88_8821c pppoe ppp_async iptable_nat xt_state xt_nat xt_conntrack xt_REDIRECT xt_MASQUERADE xt_FLOWOFFLOAD rtw88_usb rtw88_core pppox ppp_generic nf_nat nf_flow_table_hw nf_flow_table nf_conntrack_rtcache nf_conntrack mac80211 ipt_REJECT cfg80211 xt_time xt_tcpudp xt_multiport xt_mark xt_mac xt_limit xt_comment xt_TCPMSS xt_LOG wireguard slhc nf_reject_ipv4 nf_log_ipv4 nf_defrag_ipv6 nf_defrag_ipv4 iptable_mangle iptable_filter ip_tables crc_ccitt compat nf_log_ipv6 nf_log_common ip6table_mangle ip6table_filter ip6_tables ip6t_REJECT x_tables nf_reject_ipv6 ip6_udp_tunnel udp_tunnel gpio_button_hotplug [ 7.496276] CPU: 0 PID: 254 Comm: kmodloader Tainted: G W 5.4.70 #0 [ 7.496933] Hardware name: Radxa ROCK Pi E (DT) [ 7.497330] pstate: 60000005 (nZCv daif -PAN -UAO) [ 7.497756] pc : wiphy_apply_custom_regulatory+0xbc/0x230 [cfg80211] [ 7.498316] lr : wiphy_apply_custom_regulatory+0xb0/0x230 [cfg80211] [ 7.498869] sp : ffff800011483830 [ 7.499160] x29: ffff800011483830 x28: ffff80001012bda0 [ 7.499626] x27: 00000000ffffffed x26: ffff800010968be8 [ 7.500090] x25: ffff00003b000c18 x24: ffff800008a374f8 [ 7.500555] x23: 0000000000000000 x22: ffff00003b0002e0 [ 7.501019] x21: ffff00003b000c18 x20: 0000000000000000 [ 7.501483] x19: ffff00003b002640 x18: 000000000000001b [ 7.501948] x17: 000000000000003d x16: 0000000000000004 [ 7.502412] x15: ffff00003b002813 x14: ffff800010c0f090 [ 7.502876] x13: 0000000000000000 x12: ffff800010c0e000 [ 7.503341] x11: ffff800010b9a000 x10: 0000000000000010 [ 7.503805] x9 : 0000000000000000 x8 : 5355435f59524f54 [ 7.504269] x7 : 414c554745522065 x6 : 0000000000000136 [ 7.504734] x5 : 0000000000000000 x4 : 0000000000000000 [ 7.505198] x3 : 00000000ffffffff x2 : ffff800010b9a0a8 [ 7.505662] x1 : ffff00003c5ad080 x0 : 0000000000000001 [ 7.506126] Call trace: [ 7.506349] wiphy_apply_custom_regulatory+0xbc/0x230 [cfg80211] [ 7.506879] rtw_regd_init+0x13c/0x148 [rtw88_core] [ 7.507309] rtw_register_hw+0x114/0x2f8 [rtw88_core] [ 7.507751] rtw_usb_probe+0x4d0/0x1a78 [rtw88_usb] [ 7.508179] 0xffff800008a8d014 [ 7.508456] usb_probe_interface+0xe8/0x280 [ 7.508826] really_probe+0xd4/0x328 [ 7.509141] driver_probe_device+0x54/0xe8 [ 7.509501] device_driver_attach+0x6c/0x78 [ 7.509868] driver_attach+0x54/0xd0 [ 7.510198] bus_for_each_dev+0x60/0x98 [ 7.510535] driver_attach+0x20/0x28 [ 7.510850] bus_add_driver+0x178/0x1d8 [ 7.511187] driver_register+0x60/0x110 [ 7.511523] usb_register_driver+0x78/0x148 [ 7.511892] init_module+0x28/0x1000 [rtw88_8821cu] [ 7.512319] do_one_initcall+0x74/0x1c8 [ 7.512658] do_init_module+0x50/0x1f0 [ 7.512988] load_module+0x1c2c/0x2088 [ 7.513318] __do_sys_init_module+0x154/0x200 [ 7.513700] arm64_sys_init_module+0x18/0x20 [ 7.514091] el0_svc_common.constprop.1+0x7c/0x100 [ 7.514511] el0_svc_handler+0x20/0x80 [ 7.514841] el0_svc+0x8/0x200 [ 7.515109] ---[ end trace 4f0b9426f1b54e2b ]--- [ 7.515648] ------------[ cut here ]------------ [ 7.516066] WARNING: CPU: 0 PID: 254 at backports-5.8-1/net/wireless/core.c:872 wiphy_register+0x980/0x9d0 [cfg80211] [ 7.516986] Modules linked in: rtw88_8821cu(+) rtw88_8821c pppoe ppp_async iptable_nat xt_state xt_nat xt_conntrack xt_REDIRECT xt_MASQUERADE xt_FLOWOFFLOAD rtw88_usb rtw88_core pppox ppp_generic nf_nat nf_flow_table_hw nf_flow_table nf_conntrack_rtcache nf_conntrack mac80211 ipt_REJECT cfg80211 xt_time xt_tcpudp xt_multiport xt_mark xt_mac xt_limit xt_comment xt_TCPMSS xt_LOG wireguard slhc nf_reject_ipv4 nf_log_ipv4 nf_defrag_ipv6 nf_defrag_ipv4 iptable_mangle iptable_filter ip_tables crc_ccitt compat nf_log_ipv6 nf_log_common ip6table_mangle ip6table_filter ip6_tables ip6t_REJECT x_tables nf_reject_ipv6 ip6_udp_tunnel udp_tunnel gpio_button_hotplug [ 7.522029] CPU: 0 PID: 254 Comm: kmodloader Tainted: G W 5.4.70 #0 [ 7.522686] Hardware name: Radxa ROCK Pi E (DT) [ 7.523083] pstate: 60000005 (nZCv daif -PAN -UAO) [ 7.523509] pc : wiphy_register+0x980/0x9d0 [cfg80211] [ 7.523983] lr : ieee80211_register_hw+0x800/0xb98 [mac80211] [ 7.524484] sp : ffff800011483780 [ 7.524774] x29: ffff800011483780 x28: ffff00003b0025d0 [ 7.525239] x27: 0000000000000000 x26: 0000000000000000 [ 7.525703] x25: 0000000000000000 x24: ffff8000089a1b90 [ 7.526168] x23: ffff8000089a1b88 x22: 0000000000000004 [ 7.526632] x21: 0000000000000928 x20: ffff00003afffee0 [ 7.527096] x19: ffff00003b000f80 x18: 0000000000000014 [ 7.527561] x17: 00000000163a3589 x16: 000000003a4db370 [ 7.528025] x15: 00000000e308aee7 x14: 0000000025c6dc4e [ 7.528489] x13: 00000000b5c5a8b2 x12: 00000000ffffffbd [ 7.528954] x11: ffff800008918d40 x10: ffff00003b000bf8 [ 7.529418] x9 : 0000000000000003 x8 : 000000007fffffff [ 7.529882] x7 : 0000000000000003 x6 : 0000000013121706 [ 7.530347] x5 : 0000000000000004 x4 : 0000000000000000 [ 7.530811] x3 : 0000000000000000 x2 : 0000000000000000 [ 7.531275] x1 : 0000000000000000 x0 : ffff00003b0002e0 [ 7.531740] Call trace: [ 7.531962] wiphy_register+0x980/0x9d0 [cfg80211] [ 7.532392] ieee80211_register_hw+0x800/0xb98 [mac80211] [ 7.532869] rtw_register_hw+0x11c/0x2f8 [rtw88_core] [ 7.533312] rtw_usb_probe+0x4d0/0x1a78 [rtw88_usb] [ 7.533739] 0xffff800008a8d014 [ 7.534018] usb_probe_interface+0xe8/0x280 [ 7.534388] really_probe+0xd4/0x328 [ 7.534703] driver_probe_device+0x54/0xe8 [ 7.535063] device_driver_attach+0x6c/0x78 [ 7.535431] driver_attach+0x54/0xd0 [ 7.535761] bus_for_each_dev+0x60/0x98 [ 7.536098] driver_attach+0x20/0x28 [ 7.536413] bus_add_driver+0x178/0x1d8 [ 7.536749] driver_register+0x60/0x110 [ 7.537086] usb_register_driver+0x78/0x148 [ 7.537455] init_module+0x28/0x1000 [rtw88_8821cu] [ 7.537882] do_one_initcall+0x74/0x1c8 [ 7.538220] do_init_module+0x50/0x1f0 [ 7.538551] load_module+0x1c2c/0x2088 [ 7.538881] __do_sys_init_module+0x154/0x200 [ 7.539263] arm64_sys_init_module+0x18/0x20 [ 7.539654] el0_svc_common.constprop.1+0x7c/0x100 [ 7.540074] el0_svc_handler+0x20/0x80 [ 7.540403] el0_svc+0x8/0x200 [ 7.540671] ---[ end trace 4f0b9426f1b54e2c ]--- [ 7.541154] rtw_8821cu 1-1:1.2: failed to register hw [ 7.541609] rtw_8821cu 1-1:1.2: failed to register hw [ 7.542247] rtw_8821cu: probe of 1-1:1.2 failed with error -22 [ 7.542876] usbcore: registered new interface driver rtw_8821cu

As you can see, the kernel-side wireless code seems to be a 5.8 backport, maybe it's not yet supported on your sire ?

mrkiko commented 3 years ago

Seems to work fine within 5.10rc* kernel. Maybe 'ts a CONFIG setting?

ulli-kroll commented 3 years ago

Also true for me with v5.10.rc on x86_64 some random APU board arm64 Marvell EspressoBin armv5 pogoplug 4

with rtw8821 I have currently some issue with my devices no STA/AP

14

mrkiko commented 3 years ago

BTW, are there any upstream submission plans? Thanks!

Pix13 commented 3 years ago

Also true for me with v5.10.rc on x86_64 some random APU board arm64 Marvell EspressoBin armv5 pogoplug 4

with rtw8821 I have currently some issue with my devices no STA/AP

14

I have began to merge a patch from rtw88 on my tree of rtw88-usb related to that:

if LINUX_VERSION_CODE < KERNEL_VERSION(5, 9, 0)

   tasklet_init(&rtwdev->tx_tasklet, rtw_tx_tasklet,
                (unsigned long)rtwdev);

else

    tasklet_setup(&rtwdev->tx_tasklet, rtw_tx_tasklet);

endif

with parts of https://github.com/lwfinger/rtw88/commit/d8680019a6a8d806ae26823fb637ded5dd6e6989 and https://github.com/lwfinger/rtw88/commit/5c35dba8b73365c08c58a6f8d0166506559e031c

Is there a kernel configuration option to force the use of the "old" tasklet init function ?

ulli-kroll commented 3 years ago

Is there a kernel configuration option to force the use of the "old" tasklet init function ?

NO

tasklet_setup() is introduced in v5.8 and the old one tasklet_init() will at sometime in near future go away. as latest -next with next-20201209 this symbol s still in.

latest upstream rtw88 in v5.10-rc1 uses already new tasklet_setup()

I've not updated to my master branch with latest changes in rtw88, but I will do this, in the next couple of day. Which will also remove the REGULATORY_CUSTOM_REG warning, which is the real issue (I think) This will cause some problems, as you have detect yourself :-) So I need to setup some "backport" branch(es)

In the meantime I sync rtw88-usb to some sane version, so I can do git filter-branch <directory>--subdirectory-filter <directory> so I can
git cherry-pick upstream rtw88 changes

please read Documentation/process/stable-api-nonsense.rst if you are curious about these changes

Pix13 commented 3 years ago

tasklet_setup() is introduced in v5.8 and the old one tasklet_init()

Which will also remove the REGULATORY_CUSTOM_REG warning, which is the real issue (I think)

Yes :) But the tasklet init is also an issue because some time after i posted here, when i dug into it, i discovered that OpenWRT, while using a 5.4 kernel, uses a backport of 5.10 for all the network part ( i guess the wifi support is way better), hence the tasklet init/setup issue piling on the regulatory custom reg one.

Very glad to know you plan to merge the latest changes of rtw88, i'll wait for it :) ( i'm a vaguely-coding-aware hacker, my merge is probably a train wreck )

ulli-kroll commented 3 years ago

please use backports branch compile tested with v5.4

most of the changes from v5.10 are there I've discovered some issues with

first one is due the (in my opinion) wrongly usb control message handling with a callback function. I must verify this with the mt76 driver.

second one gets looked after first one ;-)

they some rtw88 changes pending in -next

Pix13 commented 3 years ago

Ok thank you very much! i'll wait for an update of backports branch then ( still have the "wiphy should have REGULATORY_CUSTOM_REG" error that prevents the driver from registering)

Do you think i could get a patch from rtw88 to apply it on backport branch for the time being? i'm gonna dig in the commits

ulli-kroll commented 3 years ago

damn I missed the changes in regd.c from upstream, before v5.9 -master and -backports have already lastest fixes which are in upcoming v511-rc1

I must also diff some other files. And the usb control stuff is almost ready ...

Pix13 commented 3 years ago

Yeah you're doing a tremendous amount of work i can see that.. i tried to update just the rtw_regd_init_wiphy() function with upstream init ( see https://github.com/Pix13/rtw88-usb/commit/281ad0c366537be75ecfbe6791df159144f6b206 ) but it was not enough, i don't have the "wiphy should have REGULATORY_CUSTOM_REG" error anymore but the driver still crashes when it tries to load. I'm gonna make a full diff and see what other differences i could try to add too

Pix13 commented 3 years ago

Hi, I've just tried your latest commits on branch backports ( 55687e7477154a4e8a0d0cd32ee4e1f9669180eb ) but as the regulatory error went out, i still have an initialization failure that looks related to wiphy_register:

[    7.267853] rtw_8821cu 1-1:1.2: USB: 2
[    7.285403] rtw_8821cu 1-1:1.2: Firmware version 24.5.0, H2C version 12
[    7.557762] ------------[ cut here ]------------
[    7.558219] WARNING: CPU: 1 PID: 250 at backports-5.8-1/net/wireless/core.c:872 wiphy_register+0x980/0x9d0 [cfg80211]
[    7.559140] Modules linked in: rtw88_8821cu(+) rtw88_8821c pppoe ppp_async rtw88_usb rtw88_core pppox ppp_generic nft_reject_ipv6 nft_reject_ipv4 nft_reject_inet nft_reject_bridge nft_reject nft_redir nft_quota nft_objref nft_numgen nf
t_meta_bridge nft_log nft_limit nft_hash nft_fwd_netdev nft_dup_netdev nft_ct nft_counter nf_tables_set nf_tables nf_conntrack_netlink mac80211 iptable_nat ipt_REJECT cfg80211 cdc_ether xt_time xt_tcpudp xt_tcpmss xt_statistic xt_state xt
_recent xt_nat xt_multiport xt_mark xt_mac xt_limit xt_length xt_hl xt_helper xt_ecn xt_dscp xt_conntrack xt_connmark xt_connlimit xt_connbytes xt_comment xt_TCPMSS xt_REDIRECT xt_MASQUERADE xt_LOG xt_HL xt_FLOWOFFLOAD xt_DSCP xt_CT xt_CL
ASSIFY wireguard usbnet slhc sch_cake nfnetlink nf_reject_ipv4 nf_nat nf_log_ipv4 nf_flow_table_hw nf_flow_table nf_dup_netdev nf_conntrack_rtcache nf_conncount iptable_raw iptable_mangle iptable_filter ipt_ECN ipheth ip_tables crc_ccitt 
compat act_connmark nf_conntrack nf_defrag_ipv6
[    7.559248]  nf_defrag_ipv4 sch_tbf sch_ingress sch_htb sch_hfsc em_u32 cls_u32 cls_tcindex cls_route cls_matchall cls_fw cls_flow cls_basic act_skbedit act_mirred nf_log_ipv6 nf_log_common ip6table_mangle ip6table_filter ip6_tables ip
6t_REJECT x_tables nf_reject_ipv6 ifb ip6_udp_tunnel udp_tunnel gpio_button_hotplug
[    7.569239] CPU: 1 PID: 250 Comm: kmodloader Not tainted 5.4.70 #0
[    7.569779] Hardware name: Radxa ROCK Pi E (DT)
[    7.570178] pstate: 60000005 (nZCv daif -PAN -UAO)
[    7.570626] pc : wiphy_register+0x980/0x9d0 [cfg80211]
[    7.571113] lr : ieee80211_register_hw+0x800/0xb98 [mac80211]
[    7.571614] sp : ffff800011483780
[    7.571904] x29: ffff800011483780 x28: ffff00003b1825d0 
[    7.572369] x27: 0000000000000000 x26: 0000000000000000 
[    7.572833] x25: 0000000000000000 x24: ffff800008b5cb90 
[    7.573298] x23: ffff800008b5cb88 x22: 0000000000000004 
[    7.573763] x21: 0000000000000928 x20: ffff00003b17fee0 
[    7.574227] x19: ffff00003b180f80 x18: 0000000000000014 
[    7.574692] x17: 00000000ff4e471e x16: 0000000020809f98 
[    7.575156] x15: 0000000044a05909 x14: 00000000b214e7f6 
[    7.575620] x13: 000000005146950f x12: 00000000ffffffbd 
[    7.576084] x11: ffff800008ae5d40 x10: ffff00003b180bf8 
[    7.576549] x9 : 0000000000000003 x8 : 000000007fffffff 
[    7.577013] x7 : 0000000000000003 x6 : 0000000013121706 
[    7.577477] x5 : 0000000000000004 x4 : 0000000000000000 
[    7.577942] x3 : 0000000000000000 x2 : 0000000000000000 
[    7.578406] x1 : 0000000000000000 x0 : ffff00003b1802e0 
[    7.578872] Call trace:
[    7.579098]  wiphy_register+0x980/0x9d0 [cfg80211]
[    7.579530]  ieee80211_register_hw+0x800/0xb98 [mac80211]
[    7.580010]  rtw_register_hw+0x11c/0x2f8 [rtw88_core]
[    7.580453]  rtw_usb_probe+0x354/0x1a80 [rtw88_usb]
[    7.580883]  init_module+0x3ed014/0x3ed01c [rtw88_8821cu]
[    7.581360]  usb_probe_interface+0xe8/0x280
[    7.581734]  really_probe+0xd4/0x328
[    7.582050]  driver_probe_device+0x54/0xe8
[    7.582409]  device_driver_attach+0x6c/0x78
[    7.582776]  __driver_attach+0x54/0xd0
[    7.583106]  bus_for_each_dev+0x60/0x98
[    7.583442]  driver_attach+0x20/0x28
[    7.583757]  bus_add_driver+0x178/0x1d8
[    7.584096]  driver_register+0x60/0x110
[    7.584432]  usb_register_driver+0x78/0x148
[    7.584799]  init_module+0x28/0x1000 [rtw88_8821cu]
[    7.585229]  do_one_initcall+0x74/0x1c8
[    7.585572]  do_init_module+0x50/0x1f0
[    7.585902]  load_module+0x1c2c/0x2088
[    7.586231]  __do_sys_init_module+0x154/0x200
[    7.586615]  __arm64_sys_init_module+0x18/0x20
[    7.587008]  el0_svc_common.constprop.1+0x7c/0x100
[    7.587428]  el0_svc_handler+0x20/0x80
[    7.587756]  el0_svc+0x8/0x200
[    7.588027] ---[ end trace 18f0159d810162b0 ]---
[    7.588535] rtw_8821cu 1-1:1.2: failed to register hw
[    7.588984] rtw_8821cu 1-1:1.2: failed to register hw
[    7.589684] rtw_8821cu: probe of 1-1:1.2 failed with error -22