Scarlett Gen 2 for-stable test 1

This release contains two patches from the scarlett-gen2 branch that I will propose to be applied to the stable Linux kernel on top of the "Fix device hang with ehci-pci" and "Improve driver startup messages" patches that have already been accepted:

• Read mixer volumes at init time
• Read mux at init time

If you have a 6i6, 18i8, or 18i20 Gen 2 device, please test this kernel to ensure that the mixer and mux states are loaded correctly from the hardware. To test:

• prevent alsactl from interfering with the testing: mv /usr/sbin/alsactl /usr/sbin/alsactl-disabled
• boot a kernel without this patch
• run "alsamixer -cUSB" and you should see the "Mix X Input YY" volume controls all zero, and all the mux selection controls initialised to default values (e.g. Analogue Outputs 1-8 set to PCM 1-8)
• change all the "Mix X Input YY" volume controls to some other value
• change all the mux selection controls to some other value
• boot this kernel
• run "alsamixer -cUSB" and you should see the volume and mux controls with the same values that you set in the previous steps
• boot a kernel without this patch again
• you should see the volume controls and mux selection controls back to their zero/default values
• move alsactl-disabled back to alsactl

Please report success or otherwise by email to [email protected]