Hi Infineon,
We are using CYW43455 chip and we want to expose command to our customers so they can decide to force 2.4GHz or 5GHz band.
wl tool documentation provides short summary about wl band command for this purposes.
However we have cases where running this command in runtime there's a kernel panic issue with following log:
[ 4461.217741] Unable to handle kernel NULL pointer dereference at virtual address 00000000
[ 4461.228950] pgd = 839ba3a3
[ 4461.233452] [00000000] *pgd=00000000
[ 4461.237061] Internal error: Oops: 5 [#1] PREEMPT SMP ARM
[ 4461.242373] Modules linked in: caam_jr caamkeyblob_desc caamhash_desc caamalg_desc crypto_engine rng_core authenc libdes sha256_generic libsha256 evbug brcmfmac(O) brcmutil(O) cfg80211(O) compat(O) caam error
[ 4461.260997] CPU: 0 PID: 28408 Comm: kworker/0:3 Tainted: G O 5.10.52-0.0.004-lts-5.10.y+ #1
[ 4461.270642] Hardware name: Freescale i.MX7ULP (Device Tree)
[ 4461.276366] Workqueue: events brcmf_fweh_event_worker [brcmfmac]
[ 4461.282516] PC is at cfg80211_get_bss_channel+0xc/0x108 [cfg80211]
[ 4461.288774] LR is at cfg80211_inform_single_bss_data+0x84/0x324 [cfg80211]
[ 4461.295648] pc : [<7f0239d8>] lr : [<7f025704>] psr: 800f0013
[ 4461.301914] sp : 85483c88 ip : 85483d38 fp : 8564008c
[ 4461.307139] r10: 000000e3 r9 : 00000000 r8 : 85640014
[ 4461.312357] r7 : 00000000 r6 : 85483df8 r5 : 855241a0 r4 : 00000000
[ 4461.318884] r3 : 00000000 r2 : 000000e3 r1 : 8564008c r0 : 855241a0
[ 4461.325411] Flags: Nzcv IRQs on FIQs on Mode SVC_32 ISA ARM Segment none
[ 4461.332543] Control: 10c5387d Table: 65b0806a DAC: 00000051
[ 4461.338293] Process kworker/0:3 (pid: 28408, stack limit = 0x4c154b96)
[ 4461.344814] Stack: (0x85483c88 to 0x85484000)
[ 4461.349182] 3c80: 85483df8 855241a0 85483df8 00000000 85640014 7f025704
We were wandering what would be the right call sequence to run this command? Can we use it in runtime ?
Thanks,
Bogdan
