[Bug 219111] Xone:23C mixer not recognized as a 2in/2out device

[bugzilla-daemon@kernel.org]

https://bugzilla.kernel.org/show_bug.cgi?id=219111

--- Comment #47 from Alan Stern (stern@rowland.harvard.edu) ---
The two schemes are methods for initializing the device.  This happens before
the configuration information is transferred, because the kernel can't
communicate with the device until it has been initialized.

The scheme works if the kernel is able to communicate without getting any
errors.  If the device then says it has only one configuration, the kernel will
believe it.

While it is possible in theory to replicate the initialization schemes
manually, in practice it would be very difficult and it would require a large
amount of programming.  If you want to experiment with the schemes, by far the
easiest way is to patch the kernel to make it do what you want.

For example, you could change the kernel so that when it encounters a device
with the Xone:23C's vendor and product IDs, it sets the number of
configurations to 2.  Then it would ask the device to transfer the information
for both configs.  But most likely the device would refuse to send the
information for the second config, because it is still in its
single-configuration mode.

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