Messages in this thread | | | Subject | Re: [PATCH] xhci: re-initialize the HC during resume if HCE was set | From | Sergey Shtylyov <> | Date | Tue, 28 Dec 2021 17:34:05 +0300 |
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Hello!
On 12/28/21 9:02 AM, Puma Hsu wrote:
> 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 ((temp & (STS_SRE | STS_HCE)) || hibernated) {
[...]
MBR, Sergey
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