Messages in this thread | | | Date | Thu, 16 Jun 2022 10:12:14 +0200 | From | Greg KH <> | Subject | Re: [PATCH v4 -next] usb: xhci: disable irq during initialization |
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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@kylinos.cn> > Reported-by: kernel test robot <lkp@intel.com>
the test robot did not find this original problem, it only found problems with your original submission, which is different.
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