backport

I need to modify networking layers in Linux kernel. As you know, there are a lot of codes in "net" directory, most of them similar to IPv6, bluetooth, etc. do not use in my system. I have several questions: 1- Is it possible to reduce/delete the code in the net directory that they are not used...

I am trying to use snps (synopsys) DMA controller driver with linux version 4.14.226. while testing Audio playback with ALSA we found issue so we took the many changes from linux 5.12 https://elixir.bootlin.com/linux/v5.12/source/drivers/dma/dw-axi-dmac/dw-axi-dmac-platform.c#L680 the old...