From: Puma Hsu <pumahsu@google.com>
To: mathias.nyman@intel.com, gregkh@linuxfoundation.org
Cc: albertccwang@google.com, linux-usb@vger.kernel.org,
linux-kernel@vger.kernel.org, Puma Hsu <pumahsu@google.com>
Subject: [PATCH] xhci: re-initialize the HC during resume if HCE was set
Date: Tue, 28 Dec 2021 14:02:46 +0800 [thread overview]
Message-ID: <20211228060246.2958070-1-pumahsu@google.com> (raw)
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>
---
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..c546d9533410 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) || (temp & STS_HCE) || hibernated) {
if ((xhci->quirks & XHCI_COMP_MODE_QUIRK) &&
!(xhci_all_ports_seen_u0(xhci))) {
--
2.34.1.448.ga2b2bfdf31-goog
next reply other threads:[~2021-12-28 6:03 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-12-28 6:02 Puma Hsu [this message]
2021-12-28 8:26 ` Greg KH
2021-12-29 5:53 ` Puma Hsu
2021-12-29 8:30 ` Greg KH
2021-12-29 9:11 ` Puma Hsu
2021-12-29 9:51 ` Greg KH
2021-12-29 10:21 ` Puma Hsu
2021-12-29 10:37 ` Greg KH
2021-12-28 14:34 ` Sergey Shtylyov
2021-12-29 5:55 ` Puma Hsu
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