lkml.org 
[lkml]   [2021]   [Dec]   [28]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
Date
Subject[PATCH] xhci: re-initialize the HC during resume if HCE was set
From
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
\
 
 \ /
  Last update: 2021-12-28 07:05    [W:0.067 / U:3.272 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site