Date:   Thu, 16 Mar 2017 15:03:03 +0100
From:   Ulf Hansson <ulf.hansson@...aro.org>
To:     Diego Viola <diego.viola@...il.com>
Cc:     Greg KH <gregkh@...uxfoundation.org>,
        Wei WANG <wei_wang@...lsil.com.cn>,
        Roger <rogerable@...ltek.com>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        Linux USB List <linux-usb@...r.kernel.org>,
        Alan Stern <stern@...land.harvard.edu>
Subject: Re: Dell Inspiron 5558/0VNM2T hangs at resume from suspend when USB 3
 is enabled

+Alan

On 15 March 2017 at 15:00, Diego Viola <diego.viola@...il.com> wrote:
> On Tue, Mar 14, 2017 at 4:15 PM, Diego Viola <diego.viola@...il.com> wrote:
>> On Tue, Mar 14, 2017 at 2:20 PM, Diego Viola <diego.viola@...il.com> wrote:
>>> On Thu, Mar 9, 2017 at 2:15 PM, Diego Viola <diego.viola@...il.com> wrote:
>>>> On Thu, Mar 9, 2017 at 11:11 AM, Diego Viola <diego.viola@...il.com> wrote:
>>>>> On Wed, Mar 8, 2017 at 5:40 PM, Diego Viola <diego.viola@...il.com> wrote:
>>>>>> Hi Greg,
>>>>>>
>>>>>> On Wed, Mar 8, 2017 at 5:15 PM, Greg KH <gregkh@...uxfoundation.org> wrote:
>>>>>>> On Wed, Mar 08, 2017 at 03:49:19PM -0300, Diego Viola wrote:
>>>>>>>> It hangs on resume from suspend if I have USB 3.0 enabled on the BIOS,
>>>>>>>> it works fine with ehci_hcd or USB 2.0.
>>>>>>>>
>>>>>>>> The way I reproduce the problem is with this command:
>>>>>>>>
>>>>>>>> $ i3lock && systemctl suspend
>>>>>>>>
>>>>>>>> This is what I see on the screen when it hangs:
>>>>>>>>
>>>>>>>> https://dl.dropboxusercontent.com/u/6005119/dell/IMG_20170308_095000.jpg
>>>>>>>> https://dl.dropboxusercontent.com/u/6005119/dell/IMG_20170307_133928.jpg
>>>>>>>>
>>>>>>>> Some logs:
>>>>>>>>
>>>>>>>> https://dl.dropboxusercontent.com/u/6005119/dell/dmesg1.txt
>>>>>>>> https://dl.dropboxusercontent.com/u/6005119/dell/dmesg2.txt
>>>>>>>>
>>>>>>>> I'm on Arch Linux x86_64, kernel 4.9.11-1-ARCH.
>>>>>>>>
>>>>>>>> I also tried Linux 4.10.1 and I could reproduce this problem there as well.
>>>>>>>>
>>>>>>>> Please let me know if I could provide more info.
>>>>>>>
>>>>>>> Has any previous kernel ever worked properly before?  If so, any chance
>>>>>>> you can use 'git bisect' to find the offending commit?
>>>>>>
>>>>>> I'm not sure, this is my work machine and I've only started using it
>>>>>> recently (since about a month ago or so).
>>>>>>
>>>>>> I will try older kernels and see if I get any different results, I
>>>>>> will report back in any case.
>>>>>>
>>>>>>>
>>>>>>> And are you sure you have updated your bios to the latest version?
>>>>>>
>>>>>> Yes.
>>>>>>
>>>>>>>
>>>>>>> thanks,
>>>>>>>
>>>>>>> greg k-h
>>>>>>
>>>>>> Thanks,
>>>>>> Diego
>>>>>
>>>>> I found another workaround, I can suspend/resume fine with `i3lock &&
>>>>> systemctl suspend` if I disconnect/unplug all my USB devices
>>>>> (keyboard, mouse, etc). This with the default settings in the BIOS
>>>>> (both USB 2.0 and 3.0 enabled).
>>>>>
>>>>> I'm also seeing some messages like this in dmesg:
>>>>>
>>>>> [   16.172190] usb 2-6: device descriptor read/64, error -110
>>>>>
>>>>> Would this indicate a hardware/firmware/power issue?
>>>>>
>>>>> Thanks,
>>>>> Diego
>>>>
>>>> OK, I've built Linux 4.4.52 (I did a localmodconfig) and rebooted into
>>>> it, I did a suspend/resume and it hanged the first time I tried to
>>>> resume, which isn't much different than using the latest kernel.
>>>>
>>>> My dmesg is still being spammed with these messages:
>>>>
>>>> [  260.043673] usb 2-1: Device not responding to setup address.
>>>> [  260.246918] usb 2-1: device not accepting address 15, error -71
>>>> [  260.633662] usb 2-1: new high-speed USB device number 17 using xhci_hcd
>>>> [  261.341340] usb 2-1: USB disconnect, device number 17
>>>>
>>>> I guess it's safe to assume at this point that this is a hardware problem?
>>>>
>>>> Thanks,
>>>> Diego
>>>
>>> Hello,
>>>
>>> I've found something interesting and what it seems to be the cause of
>>> my problem.
>>>
>>> As soon as I boot my system I can see this process being in the D-state:
>>>
>>> [root@...ost ~]# ps aux | grep " D"
>>> root       269  0.0  0.0      0     0 ?        D    14:11   0:00 [rtsx_usb_ms_2]
>>> root      1424  0.0  0.0  10788  2172 pts/2    S+   14:19   0:00 grep  D
>>> [root@...ost ~]#
>>>
>>> I'm not exactly sure why that is, but if I do a 'rmmod rtsx_usb_ms'
>>> the problem is gone. I already tried suspending/resuming ~40 times
>>> after I disabled the module and the suspend/resume problem is gone.

That's a good observation!

It suspect the drivers/memstick/host/rtsx_usb_ms.c isn't behaving
properly from PM point of view. Perhaps it tries to access its device
while it from a runtime PM point view still is in a runtime suspended
state. Exactly why I don't know yet.

Moreover we have had issues with this driver before and its
corresponding SD card driver in drivers/mmc/host/rtsx_usb_sdmmc.c. On
top of that, both their corresponding devices shares the same usb mfd
device as parent, which is managed by drivers/mfd/rtsx_usb.c.

Unfortunate my knowledge about USB is still in the learning phase,
however I know well about runtime PM ans system suspend, so perhaps I
still might be able to help.

Anyway, I have looped in Alan, let's see if he has some input to this.

>>>
>>> Diego
>>
>> Adding Roger Tseng to the CC also.
>>
>> Diego
>
> According to this document:
>
> http://downloads.dell.com/manuals/all-products/esuprt_laptop/esuprt_inspiron_laptop/inspiron-15-5558-laptop_reference%20guide_en-us.pdf
>
> My computer only has a SD card slot and no MEMSTICK slot.
>
> lsusb says this though:
>
> Bus 001 Device 005: ID 0bda:0129 Realtek Semiconductor Corp. RTS5129
> Card Reader Controller
>
> Maybe the driver gets locked up looking for the MEMSTICK slot?

Yes correct!

>
> Diego

Kind regards
Uffe

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