On Tue, Oct 17, 2017 at 07:57:39PM -0500, wenxiong@xxxxxxxxxxxxxxxxxx wrote:
> From: Wen Xiong <wenxiong@xxxxxxxxxxxxxxxxxx>
>
>
> We saw "Host halt failed, -110" error when rebooting system/
> shutdowning system/kexec constantly.
>
> This patch called usb_disconnect() before calling xhci_halt().
> usb_disconnect()disconnect the parent and all of its children,
> clean up hardware state and make sure that hardware is ready
> to be halted down.
>
> Rebooting.
> [18648.996035] sd 0:2:1:0: [sdb] Synchronizing SCSI cache
> [18678.831197] mpt3sas_cm1: sending message unit reset !!
> [18678.832774] mpt3sas_cm1: message unit reset: SUCCESS
> [18683.900798] mpt3sas_cm0: sending message unit reset !!
> [18683.902370] mpt3sas_cm0: message unit reset: SUCCESS
> [18693.921103] xhci_hcd 0005:01:00.0: Host halt failed, -110
> [18693.924483] reboot: Restarting system
> [18861.282906007,5] OPAL: Reboot request...
>
> Signed-off-by: Wen Xiong <wenxiong@xxxxxxxxxxxxxxxxxx>
>
> Thanks,
> Wendy
>
> ---
> drivers/usb/host/xhci.c | 7 +++++++
> 1 files changed, 7 insertions(+), 0 deletions(-)
>
> diff --git a/drivers/usb/host/xhci.c b/drivers/usb/host/xhci.c
> index ee198ea..67fdb0f 100644
> --- a/drivers/usb/host/xhci.c
> +++ b/drivers/usb/host/xhci.c
> @@ -709,10 +709,17 @@ static void xhci_stop(struct usb_hcd *hcd)
> static void xhci_shutdown(struct usb_hcd *hcd)
> {
> struct xhci_hcd *xhci = hcd_to_xhci(hcd);
> + struct usb_device *rhdev = hcd->self.root_hub;
> +
> + dev_info(hcd->self.controller, "remove, state %x\n", hcd->state);
Debugging code like this is not needed :)
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