[FS#256] usb audio doesn't work - "no such device"

[LEDE Bugs]

The following task has a new comment added:

FS#256 - usb audio doesn't work - "no such device"
User who did this - Dmitry (f3flight)

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I'm not sure how to compare kernel memory consumption, if you can instruct me that would be great - since 20kb is so little I'm afraid I won't be able to notice the difference between two kernels due to RAM usage fluctuations...
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More information can be found at the following URL:
https://bugs.lede-project.org/index.php?do=details&task_id=256#comment758