diff mbox series

[1/6] xhci: print warning when HCE was set

Message ID 20221130091944.2171610-2-mathias.nyman@linux.intel.com (mailing list archive)
State Accepted
Commit 2a25e66d676dfb9b018abd503deed3d38a892dec
Headers show
Series xhci patches for usb-next | expand

Commit Message

Mathias Nyman Nov. 30, 2022, 9:19 a.m. UTC 
From: Longfang Liu <liulongfang@huawei.com>

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>
---
 drivers/usb/host/xhci-ring.c | 5 +++++
 1 file changed, 5 insertions(+)
diff mbox series

Patch

diff --git a/drivers/usb/host/xhci-ring.c b/drivers/usb/host/xhci-ring.c
index ad81e9a508b1..f6af479188e8 100644
--- a/drivers/usb/host/xhci-ring.c
+++ b/drivers/usb/host/xhci-ring.c
@@ -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);