From: Wen Xiong <wenxi...@linux.vnet.ibm.com>
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 <wenxi...@linux.vnet.ibm.com>
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);
if (xhci->quirks & XHCI_SPURIOUS_REBOOT)
usb_disable_xhci_ports(to_pci_dev(hcd->self.sysdev));
+ mutex_lock(&usb_bus_idr_lock);
+ usb_disconnect(&rhdev);
+ mutex_unlock(&usb_bus_idr_lock);
+
spin_lock_irq(&xhci->lock);
xhci_halt(xhci);
/* Workaround for spurious wakeups at shutdown with HSW */
--
1.7.1
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