at 08:23 on Sun 21-Aug-2022 Christoph Hellwig (hch@xxxxxx) wrote: > On Thu, Aug 18, 2022 at 04:47:14PM +0200, Greg Kroah-Hartman wrote: > > What is the output of the lspci -v for the USB 3 controller? > > > > Christoph, any ideas? > > Well, with that commit it must be related to dma ops selection. > As this appears to be an AMD system the options here are direct, > amd_iommu and possibly amd_gart as the odd one in the mix. > > Alan, can you send me your .config? I hope that with the following information there is no need for me to do so. It is indeed an old AMD CPU Model name: AMD FX(tm)-4300 Quad-Core Processor CPU family: 21 Model: 2 Comparing with another AMD system that doesn't show the problem, I see that CONFIG_GART_IOMMU is only set on the one with the problem. The configs have just had "make oldconfig" run on them for years, I have no idea why one has it set. Clearing it fixes the problem! Thanks for the hint, although there is a still wider issue with this regression. $ diff .config.old .config 353c353 < CONFIG_GART_IOMMU=y --- > # CONFIG_GART_IOMMU is not set 4683d4682 < CONFIG_IOMMU_HELPER=y 4987d4985 < # CONFIG_IOMMU_DEBUG is not set $ -- Alan J. Wylie https://www.wylie.me.uk/ Dance like no-one's watching. / Encrypt like everyone is. Security is inversely proportional to convenience
