Hi,
When a xhci USB2.0 port is resuming and waiting for resume signaling,
completion of
USB_RESUME_TIMEOUT, it just reports the port status as USB_PORT_STAT_SUSPEND,
and let the usbcore to check the port status again.
https://elixir.bootlin.com/linux/v4.17-rc6/source/drivers/usb/host/xhci-hub.c#
From: Anshuman Gupta
This patch will improve the variable auto-resume latency of an usb-port.
When xhci gets a port status change event interrupt due to PORT_PLC
(port link state transition), linux Host controller driver drives the
resume signalling on the bus for the amount of time defined by
From: Anshuman Gupta
This patch will improve the variable auto-resume latency of an usb-port.
When xhci gets a HS port status change event interrupt due to PORT_PLC
(port link state transition), linux Host controller driver drives the
resume signalling on the bus for the amount of time defined
On Mon, Sep 17, 2018 at 11:24:20AM +0300, Mathias Nyman wrote:
> On 14.09.2018 16:00, Greg KH wrote:
> > On Fri, Sep 14, 2018 at 03:33:30PM +0300, Mathias Nyman wrote:
> > > From: Anshuman Gupta
> > >
> > > When USB bus host controller root hub resumes fr
