On Thu, Jun 16, 2022 at 04:09:33PM +0800, Hongyu Xie wrote: > irq is disabled in xhci_quiesce(called by xhci_halt, with bit:2 cleared > in USBCMD register), but xhci_run(called by usb_add_hcd) re-enable it. > It's possible that you will receive thousands of interrupt requests > after initialization for 2.0 roothub. And you will get a lot of > warning like, "xHCI dying, ignoring interrupt. Shouldn't IRQs be > disabled?". This amount of interrupt requests will cause the entire > system to freeze. > This problem was first found on a device with ASM2142 host controller > on it. > > Signed-off-by: Hongyu Xie <xiehongyu1@xxxxxxxxxx> > Reported-by: kernel test robot <lkp@xxxxxxxxx> the test robot did not find this original problem, it only found problems with your original submission, which is different.
