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xhci: print warning when HCE was set

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When HCE(Host Controller Error) is set, it means that the xhci hardware
controller has an error at this time, but the current xhci driver
software does not log this event.

By adding an HCE event detection in the xhci interrupt processing
interface, a warning log is output to the system, which is convenient
for system device status tracking.

Signed-off-by: Longfang Liu <liulongfang@huawei.com>
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Link: https://lore.kernel.org/r/20221130091944.2171610-2-mathias.nyman@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Longfang Liu 2022-11-30 11:19:39 +02:00 • committed by Greg Kroah-Hartman
parent 51daa42d6b
commit 2a25e66d67
1 changed files with 5 additions and 0 deletions
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5
drivers/usb/host/xhci-ring.c
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@ -3031,6 +3031,11 @@ irqreturn_t xhci_irq(struct usb_hcd *hcd)
if (!(status & STS_EINT))
goto out;
if (status & STS_HCE) {
xhci_warn(xhci, "WARNING: Host Controller Error\n");
goto out;
}
if (status & STS_FATAL) {
xhci_warn(xhci, "WARNING: Host System Error\n");
xhci_halt(xhci);