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Should we decide to use ModemManager in EVE, there is a follow-up initiative to productize this integration. This mostly involves more testing, writing documentation, cleaning up the code a bit and getting it through reviews.
Appendix: watchdog from EM7565
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[ 159.218839] ------------[ cut here ]------------ [ 159.218850] NETDEV WATCHDOG: wwan0 (cdc_mbim): transmit queue 0 timed out [ 159.218867] WARNING: CPU: 0 PID: 0 at net/sched/sch_generic.c:467 dev_watchdog+0x11e/0x18a [ 159.218871] Modules linked in: dummy usbmouse usbkbd usbhid cdc_acm leds_gpio gpio_pca953x regmap_i2c hpwdt hwmon_vid zfs(PO) zunicode(PO) zzstd(O) zlua(O) zavl(PO) icp(PO) zcommon(PO) znvpair(PO) spl(O) qmi_wwan option cdc_mbim cdc_ncm cdc_ether cdc_wdm usbnet mii qcserial usb_wwan usbserial btusb btrtl btbcm btintel bluetooth ecdh_generic ecc iwlmvm led_class mac80211 e1000e i2c_i801 i2c_smbus iwlwifi cfg80211 tpm_crb [ 159.218915] CPU: 0 PID: 0 Comm: swapper/0 Kdump: loaded Tainted: P O 5.10.186-linuxkit #1 [ 159.218918] Hardware name: GEEKOM Mini IT 8/Mini IT 8, BIOS U6G03 07/21/2022 [ 159.218923] RIP: 0010:dev_watchdog+0x11e/0x18a [ 159.218926] Code: 20 01 01 00 75 36 48 89 ef c6 05 dd 20 01 01 01 e8 9e f9 fb ff 44 89 e1 48 89 ee 48 c7 c7 24 12 58 af 48 89 c2 e8 41 4c 1f 00 <0f> 0b eb 0e 41 ff c4 48 05 40 01 00 00 e9 5c ff ff ff 48 8b 83 a0 [ 159.218933] RSP: 0018:ffffad0880003ed8 EFLAGS: 00010286 [ 159.218936] RAX: 0000000000000000 RBX: ffff949205fa9440 RCX: 0000000000000027 [ 159.218939] RDX: 0000000000000003 RSI: ffffad0880003d60 RDI: ffff94955dc1c3e0 [ 159.218943] RBP: ffff949205fa9000 R08: ffffffffaf8dada8 R09: 0000000000000017 [ 159.218946] R10: 3a474f4448435441 R11: 572056454454454e R12: 0000000000000000 [ 159.218949] R13: 00000000ffffc8f8 R14: ffffad0880003f28 R15: ffffffffaea118b9 [ 159.218953] FS: 0000000000000000(0000) GS:ffff94955dc00000(0000) knlGS:0000000000000000 [ 159.218957] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 159.218960] CR2: 000000c000bd7000 CR3: 0000000112240003 CR4: 00000000003726b0 [ 159.218963] Call Trace: [ 159.218966] <IRQ> [ 159.218971] ? __warn+0x98/0xda [ 159.218974] ? dev_watchdog+0x11e/0x18a [ 159.218979] ? report_bug+0x96/0xda [ 159.218983] ? handle_bug+0x46/0x6e [ 159.218987] ? exc_invalid_op+0x14/0x65 [ 159.218990] ? asm_exc_invalid_op+0x12/0x20 [ 159.218993] ? dev_deactivate_queue+0x25/0x25 [ 159.218998] ? dev_watchdog+0x11e/0x18a [ 159.219001] ? dev_watchdog+0x11e/0x18a [ 159.219004] ? dev_deactivate_queue+0x25/0x25 [ 159.219008] call_timer_fn+0x63/0xfb [ 159.219011] __run_timers+0x146/0x188 [ 159.219015] ? timekeeping_get_ns+0x19/0x33 [ 159.219018] run_timer_softirq+0x19/0x2d [ 159.219021] __do_softirq+0xf7/0x233 [ 159.219025] asm_call_irq_on_stack+0xf/0x20 [ 159.219028] </IRQ> [ 159.219031] do_softirq_own_stack+0x31/0x42 [ 159.219035] __irq_exit_rcu+0x45/0x84 [ 159.219038] sysvec_apic_timer_interrupt+0x6c/0x7a [ 159.219041] asm_sysvec_apic_timer_interrupt+0x12/0x20 [ 159.219046] RIP: 0010:cpuidle_enter_state+0x12c/0x1f2 [ 159.219049] Code: ff 45 84 ff 74 1d 9c 58 0f 1f 44 00 00 0f ba e0 09 73 09 0f 0b fa 66 0f 1f 44 00 00 31 ff e8 b0 19 8a ff fb 66 0f 1f 44 00 00 <45> 85 f6 0f 88 99 00 00 00 49 63 c6 4c 2b 24 24 48 6b c8 68 48 6b [ 159.219055] RSP: 0018:ffffffffaf803e68 EFLAGS: 00000246 [ 159.219058] RAX: ffff94955dc2ec80 RBX: ffffcd087fc2d100 RCX: 000000000000001f [ 159.219061] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 [ 159.219065] RBP: 0000000000000001 R08: 00000000ffffffff R09: 071c71c71c71c71c [ 159.219068] R10: 0000000000000020 R11: 000000000000001b R12: 00000025122e9ed8 [ 159.219071] R13: ffffffffaf991000 R14: 0000000000000001 R15: 0000000000000000 [ 159.219077] ? cpuidle_enter_state+0x103/0x1f2 [ 159.219080] cpuidle_enter+0x2a/0x3a [ 159.219084] do_idle+0x17c/0x1ee [ 159.219087] cpu_startup_entry+0x1d/0x1f [ 159.219091] start_kernel+0x524/0x54b [ 159.219096] secondary_startup_64_no_verify+0xb0/0xbb [ 159.219100] ---[ end trace 122b4cdcf5fdb33e ]--- |
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