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Merge "usb: xhci: Reduce command abort handshake timeout"

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qctecmdr 2020-08-18 04:33:28 -07:00 • committed by Gerrit - the friendly Code Review server
commit 216a9df69f
1 changed files with 3 additions and 3 deletions
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6
drivers/usb/host/xhci-ring.c
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@ -351,13 +351,13 @@ static int xhci_abort_cmd_ring(struct xhci_hcd *xhci, unsigned long flags)
&xhci->op_regs->cmd_ring);
/* Section 4.6.1.2 of xHCI 1.0 spec says software should also time the
* completion of the Command Abort operation. If CRR is not negated in 5
* seconds then driver handles it as if host died (-ENODEV).
* completion of the Command Abort operation. If CRR is not negated in a
* timely manner then driver handles it as if host died (-ENODEV).
* In the future we should distinguish between -ENODEV and -ETIMEDOUT
* and try to recover a -ETIMEDOUT with a host controller reset.
*/
ret = xhci_handshake(&xhci->op_regs->cmd_ring,
CMD_RING_RUNNING, 0, 5 * 1000 * 1000);
CMD_RING_RUNNING, 0, 1000 * 1000);
if (ret < 0) {
xhci_err(xhci, "Abort failed to stop command ring: %d\n", ret);
xhci_halt(xhci);