Messages in this thread | | | Date | Fri, 22 Sep 2023 12:30:09 +0200 | From | Greg Kroah-Hartman <> | Subject | Re: [PATCH] xhci: Keep interrupt disabled in initialization until host is running. |
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On Fri, Sep 22, 2023 at 02:51:41PM +0530, Prashanth K wrote: > From: Hongyu Xie <xy521521@gmail.com> > > [ Upstream commit 808925075fb750804a60ff0710614466c396db4 ] > > 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. > > [tidy up old code while moving it, reword header -Mathias] > > Cc: stable@kernel.org > Signed-off-by: Hongyu Xie <xiehongyu1@kylinos.cn> > Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com> > Link: https://lore.kernel.org/r/20220623111945.1557702-2-mathias.nyman@linux.intel.com > Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> > --- > drivers/usb/host/xhci.c | 34 +++++++++++++++++++++------------- > 1 file changed, 21 insertions(+), 13 deletions(-)
What stable kernel(s) are you asking this to be applied to?
greg k-h
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