mainline inclusion from mainline-v6.2-rc1 commit 2a25e66d676dfb9b018abd503deed3d38a892dec category: feature bugzilla: https://gitee.com/openeuler/kernel/issues/I87TGP CVE: NA
Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?i...
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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... Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/usb/host/xhci-ring.c | 5 +++++ 1 file changed, 5 insertions(+)
diff --git a/drivers/usb/host/xhci-ring.c b/drivers/usb/host/xhci-ring.c index 935368c6b31d..d99ea8492749 100644 --- a/drivers/usb/host/xhci-ring.c +++ b/drivers/usb/host/xhci-ring.c @@ -2935,6 +2935,11 @@ 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);
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Longfang Liu