* [PATCH v2] xhci: re-initialize the HC during resume if HCE was set
@ 2021-12-29 6:00 Puma Hsu
0 siblings, 0 replies; only message in thread
From: Puma Hsu @ 2021-12-29 6:00 UTC (permalink / raw)
To: mathias.nyman, gregkh
Cc: s.shtylyov, albertccwang, linux-usb, linux-kernel, Puma Hsu
When HCE(Host Controller Error) is set, it means an internal
error condition has been detected. It needs to re-initialize
the HC too.
Signed-off-by: Puma Hsu <pumahsu@google.com>
---
v2: Follow Sergey Shtylyov <s.shtylyov@omp.ru>'s comment.
drivers/usb/host/xhci.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/usb/host/xhci.c b/drivers/usb/host/xhci.c
index dc357cabb265..ab440ce8420f 100644
--- a/drivers/usb/host/xhci.c
+++ b/drivers/usb/host/xhci.c
@@ -1146,8 +1146,8 @@ int xhci_resume(struct xhci_hcd *xhci, bool hibernated)
temp = readl(&xhci->op_regs->status);
}
- /* If restore operation fails, re-initialize the HC during resume */
- if ((temp & STS_SRE) || hibernated) {
+ /* If restore operation fails or HC error is detected, re-initialize the HC during resume */
+ if ((temp & (STS_SRE | STS_HCE)) || hibernated) {
if ((xhci->quirks & XHCI_COMP_MODE_QUIRK) &&
!(xhci_all_ports_seen_u0(xhci))) {
--
2.34.1.448.ga2b2bfdf31-goog
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