ALSA: usb: USB3 SuperSpeed sound support
This is V2 of the patch, after feedback from Clemens and Daniel. This patch adds SuperSpeed support to the USB drivers under sound/. It adds tests for USB_SPEED_SUPER to the appropriate places that check for the USB speed. This patch has been tested with our SS USB3 device emulating a set of Yamaha speakers and a Logitech microphone, but with the descriptors modified to add USB3 support. It has also been tested with the real speakers and microphone, to make sure that USB2 devices still work. Signed-off-by: NPaul Zimmerman <paulz@synopsys.com> Cc: Clemens Ladisch <clemens@ladisch.de> Cc: Daniel Mack <daniel@caiaq.de> Cc: Greg Kroah-Hartman <gregkh@suse.de> Signed-off-by: NTakashi Iwai <tiwai@suse.de>
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