* Yegor Yefremov <yegorslists@xxxxxxxxxxxxxx> [220526 05:45]: > On Tue, May 24, 2022 at 4:19 PM Tony Lindgren <tony@xxxxxxxxxxx> wrote: > > Maybe also try with CONFIG_MUSB_PIO_ONLY=y to see if it makes things > > better or worse :) > > PIO is always the last resort :-) And now it proves it again. With > PIO_ONLY the system doesn't stall. OK great :) So it has something to do with drivers/dma/ti/cppi41.c, or with drivers/usb/musb/cppi_dma.c or whatever the dma for am335x here is. Or maybe there's something using stack for buffers being passed to dma again that breaks with vmap stack. Regards, Tony
