r=0424, idProduct=2512
usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0
hub 1-1:1.0: USB hub found
version 2.86 bootinghub 1-1:1.0: 0 ports detected
Unable to handle kernel NULL pointer dereference at virtual address 00000010
Signed-off-by: David Linares
---
drivers
Hi all,
I am currently working on an open-source project using linux 3.5.4 on
an i.MX25 board manufactured by Voipac.
I have been experiencing all sorts of USB issues that I have logged here:
http://pastebin.com/Ry6fdne5
As you will see, it varies from detecting a hub with 0 ports, failing
On 25 March 2013 14:44, Alan Stern wrote:
> On Mon, 25 Mar 2013, David Linares wrote:
>
>> Hi all,
>>
>> I am currently working on an open-source project using linux 3.5.4 on
>> an i.MX25 board manufactured by Voipac.
>> I have been experiencing all sorts o
On 25 March 2013 17:31, Greg Kroah-Hartman wrote:
> On Mon, Mar 25, 2013 at 10:50:27AM +0000, David Linares wrote:
>> Return an error if hub->descriptor->bNbrPorts==0. Without this additional
>> check, we can end up doing a "hub->ports = kzalloc(0, GFP_KERNEL)"
On 25 March 2013 18:07, Alan Stern wrote:
> On Mon, 25 Mar 2013, David Linares wrote:
>
>> > Start with usbmon (see Documentation/usb/usbmon.txt).
>>
>> Thanks Alan. I have just compiled my kernel with debugfs and usbmon.
>> I can now easily capture raw te
On 26 March 2013 15:27, Alan Stern wrote:
> On Tue, 26 Mar 2013, David Linares wrote:
>
>> >> While enabling usbmon, I noticed something that can be related.
>> >> There is a config: "Maximum VBUS Power usage" which is currently set to
>&
On 26 March 2013 18:50, Alan Stern wrote:
> On Tue, 26 Mar 2013, David Linares wrote:
>
>> >> The device I am working on is an embedded device, therefore the wireless
>> >> adapter has to be connected to the internal hub. This hub and the whole
>> >>
On 27 March 2013 18:35, Alan Stern wrote:
> On Wed, 27 Mar 2013, David Linares wrote:
>
>> Thanks Alan. I understand, but the USB cable is plugged into an AC/DC
>> adaptor which can provide an output of 1A. After breaking out an USB
>> cable, I measured that the consumpti
On 27 March 2013 20:00, Alan Stern wrote:
> On Wed, 27 Mar 2013, David Linares wrote:
>
>> Please correct me if I am wrong.
>> On my iMX25 board, I have got a 1-port root_hub which will provide
>> 500mA max to its unique child.
>
> You should check that against the
