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Linux kernel 6.19-rc6 includes two critical USB fixes for Apple M1 and M2 Macs. The patches address USB 2.0 and 3.x device detection issues caused by spurious USB role switches on M2 and M1 Pro/Max/Ultra devices. The first fix ignores redundant role switches that leave devices in an undetectable state. The second fix resolves boot-time USB2 device issues by configuring the PHY role earlier, before dwc3 powers on, preventing configuration failures during host-device transitions.

Linux 6.19 Landing Fixes For USB2/USB3 Issues With Apple M1/M2 Macs