USB: xhci: Stop debugging polling loop when HC dies.
If the host controller card is removed from the system, stop the timer function to debug the xHCI rings. Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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@ -335,6 +335,12 @@ void xhci_event_ring_work(unsigned long arg)
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spin_lock_irqsave(&xhci->lock, flags);
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spin_lock_irqsave(&xhci->lock, flags);
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temp = xhci_readl(xhci, &xhci->op_regs->status);
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temp = xhci_readl(xhci, &xhci->op_regs->status);
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xhci_dbg(xhci, "op reg status = 0x%x\n", temp);
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xhci_dbg(xhci, "op reg status = 0x%x\n", temp);
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if (temp == 0xffffffff) {
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xhci_dbg(xhci, "HW died, polling stopped.\n");
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spin_unlock_irqrestore(&xhci->lock, flags);
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return;
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}
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temp = xhci_readl(xhci, &xhci->ir_set->irq_pending);
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temp = xhci_readl(xhci, &xhci->ir_set->irq_pending);
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xhci_dbg(xhci, "ir_set 0 pending = 0x%x\n", temp);
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xhci_dbg(xhci, "ir_set 0 pending = 0x%x\n", temp);
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xhci_dbg(xhci, "No-op commands handled = %d\n", xhci->noops_handled);
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xhci_dbg(xhci, "No-op commands handled = %d\n", xhci->noops_handled);
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