[FS#294] linksys 1200ac (and most likely other mvneta) has a multi-flow lockout problem

[LEDE Bugs]

The following task has a new comment added:

FS#294 - linksys 1200ac (and most likely other mvneta) has a multi-flow lockout problem
User who did this - Dave Täht (dtaht)

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Also, the current code is locked to the first core.

root at linksys-1200ac:/proc/irq# cd 37
root at linksys-1200ac:/proc/irq/37# echo 2 > smp_affinity
-ash: write error: I/O error
root at linksys-1200ac:/proc/irq/37# ls
affinity_hint      node               smp_affinity_list
mvneta             smp_affinity       spurious

root at linksys-1200ac:/proc/irq/105# cat /proc/interrupts 
           CPU0       CPU1       
 17:   47628305   48244950       GIC  29 Edge      twd
 18:          0          0  armada_370_xp_irq   5 Level     armada_370_xp_per_cpu_tick
 20:        174          0       GIC  34 Level     mv64xxx_i2c
 21:         20          0       GIC  44 Level     serial
 35:   45945135          1  armada_370_xp_irq  12 Level     mvneta
 36:          0          0       GIC  50 Level     ehci_hcd:usb1
 37:   71740156          0  armada_370_xp_irq   8 Level     mvneta
 38:          0          0       GIC  51 Level     f1090000.crypto
 39:          0          0       GIC  52 Level     f1090000.crypto
 40:          0          0       GIC  53 Level     f10a3800.rtc
 41:          0          0       GIC  58 Level     f10a8000.sata
 42:      41658          0       GIC 116 Level     f10d0000.flash
 43:          0          0       GIC  49 Level     xhci-hcd:usb2
 68:          0          0  f1018100.gpio  24 Edge      gpio_keys
 73:          0          0  f1018100.gpio  29 Edge      gpio_keys
104:  363099418      34760       GIC  61 Level     mwlwifi
105:  373070016      17906       GIC  65 Level     mwlwifi
106:          2          0       GIC  54 Level     f1060800.xor
107:          2          0       GIC  97 Level     f1060900.xor
IPI0:          0          1  CPU wakeup interrupts
IPI1:          0          0  Timer broadcast interrupts
IPI2:    1104300    3646744  Rescheduling interrupts
IPI3:          0          0  Function call interrupts
IPI4:     280997   19353589  Single function call interrupts
IPI5:          0          0  CPU stop interrupts
IPI6:          0          0  IRQ work interrupts
IPI7:          0          0  completion interrupts
Err:          0
root at linksys-1200ac:/proc/irq/105# cd ..
root at linksys-1200ac:/proc/irq# cd 37
root at linksys-1200ac:/proc/irq/37# echo 2 > smp_affinity
-ash: write error: I/O error
root at linksys-1200ac:/proc/irq/37# ls
affinity_hint      node               smp_affinity_list
mvneta             smp_affinity       spurious


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More information can be found at the following URL:
https://bugs.lede-project.org/index.php?do=details&task_id=294#comment1324