Hi,
This patch series is about to add a sysfs attribute, through which
users can disable or enable USB3 LPM (link power management) from
a USB port. Once LPM is disabled from the USB port, LPM between the
downstreaming device and the hub port will not be activated. This
helps users to use any LPM-
USB3 LPM is default on in Linux kernel if both xHCI host controller
and the USB devices declare to be LPM-capable. Unfortunately, some
devices are known to work well with LPM disabled, but to be broken
if LPM is enabled, although it declares the LPM capability. Users
won't be able to use this kind
Commit 8306095fd2c1 ("USB: Disable USB 3.0 LPM in critical sections.")
adds usb3_lpm_enabled member to struct usb_device. There is no reference
to this member now. Hence, it could be removed.
Signed-off-by: Lu Baolu
---
include/linux/usb.h | 2 --
1 file changed, 2 deletions(-)
diff --git a/inc
Commit 655fe4effe0f ("usbcore: add sysfs support to xHCI usb3
hardware LPM") introduced usb3_hardware_lpm sysfs node. This
doesn't show the correct status of USB3 U1 and U2 LPM status.
This patch fixes this by replacing usb3_hardware_lpm with two
nodes, usb3_hardware_lpm_u1 (for U1) and usb3_hardw
Hello,
On Mon, Nov 9, 2015 at 9:52 AM, Bjørn Mork wrote:
> Javi Barroso writes:
>> El 6 de noviembre de 2015 0:28:40 CET, Greg KH escribió:
>>>On Thu, Nov 05, 2015 at 06:03:15PM +0100, Javier Barroso wrote:
Hello,
I have a usb stick which was (apparently) broken after plug it on
Jose Colmenares wrote:
> If the computer starts, and the IMU is already plugged in, I have
> to unplug it and plug it again. This is unacceptable because the
> IMU will be used in a robot, so we cannot just unplug it every time
> the robot starts.
In a prototype you could work around this problem
On Fri, 13 Nov 2015, Steinar H. Gunderson wrote:
> On Fri, Nov 13, 2015 at 04:02:48PM -0500, Alan Stern wrote:
> >> So what is the road from here? I guess the original questions about cache
> >> coherency still apply, and that this is what I'm seeing in dmesg.
> > What questions? It should be obv
On Sat, Nov 14, 2015 at 12:09:38PM -0500, Alan Stern wrote:
> And you probably couldn't use GPU memory for this purpose because (I
> assume) the USB host controller wouldn't be able to access it via DMA.
I guess that depends a bit; on my particular system, I'm using an Intel GPU,
so memory is shar
On Fri, 13 Nov 2015, Doug Anderson wrote:
> To handle things smarter, I think I need to research how to deal with
> hubs attached to hubs attached to hubs. For instance:
>
> dwc2
> -> multi_tt hub
> -> single_tt hub
> -> device 1
> -> device 2
> -> single_tt hub
>
On Sat, 14 Nov 2015, Steinar H. Gunderson wrote:
> On Sat, Nov 14, 2015 at 12:09:38PM -0500, Alan Stern wrote:
> > And you probably couldn't use GPU memory for this purpose because (I
> > assume) the USB host controller wouldn't be able to access it via DMA.
>
> I guess that depends a bit; on my
On 15-11-12 05:18 PM, Alan Stern wrote:
On Thu, 12 Nov 2015, Douglas Gilbert wrote:
Yes, the X201 has USB 2.0 host ports. It is running a stock Ubuntu
15.10 kernel: 4.2.0-18-generic and the log indicates that the
ehci_pci driver is being used. Part of the X201's syslog is
attached in which a dr
Hi Douglas,
On Sat, 14 Nov 2015 14:15:30 -0500
Douglas Gilbert wrote:
> On 15-11-12 05:18 PM, Alan Stern wrote:
> > On Thu, 12 Nov 2015, Douglas Gilbert wrote:
> >
> >> Yes, the X201 has USB 2.0 host ports. It is running a stock Ubuntu
> >> 15.10 kernel: 4.2.0-18-generic and the log indicates th
Hi Andrzej & Co,
Apologies for the delayed follow up on this series.
On Tue, 2015-10-27 at 10:39 +0100, Andrzej Pietrasiewicz wrote:
> Dear All,
>
> This series adds support to tcm usb gadget for composing it with configfs.
>
> @target-devel folks: You might be wondering why add configfs for so
Following changes that appeared in lk 4.0.0, the gadget udc driver for
some ARM based Atmel SoCs (e.g. at91sam9x5 and sama5d3 families)
incorrectly deduced full-speed USB link speed even when the hardware
had negotiated a high-speed link. The fix is to make sure that the
UDPHS Interrupt Enable Reg
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