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On Linux v5.5.167 my USB flash drive was detected and mountable. After upgrading to Linux v6.6.110 the USB flash drive is no longer recognized. If it is already plugged in during boot phase I get the following errors: xhci-hcd xhci-hcd.2.auto: Error while assigning device slot ID: Command Aborted xhci-hcd xhci-hcd.2.auto: Max number of devices this xHCI host supports is 127 I have narrowed the issue down to the following commit: 136975c33894e7b48a6007af0f4c25f423bbd1de arm64: dts: ls1046a: make dma-coherent global to the SoC When I revert this commit, USB works perfectly on my system. I have already asked on the `linux-usb` mailing list (https://lore.kernel.org/linux-usb/aTFr17xKxnWGG3vU@FUE-ALEWI-WINX/) and also forwarded the message to `linux-arm-kernel`, but I haven’t received any replies so far. Has anyone encountered this problem on the LS1046 or a similar platform? Any hints or experiences would be greatly appreciated. Best regards Alexander Wilhelm