From: Ferry Toth <fntoth@gmail.com>
To: Pavel Hofman <pavel.hofman@ivitera.com>, Felipe Balbi <balbi@kernel.org>
Cc: Wesley Cheng <wcheng@codeaurora.org>,
gregkh@linuxfoundation.org, robh+dt@kernel.org,
agross@kernel.org, bjorn.andersson@linaro.org,
frowand.list@gmail.com, linux-usb@vger.kernel.org,
linux-kernel@vger.kernel.org, devicetree@vger.kernel.org,
linux-arm-msm@vger.kernel.org, jackp@codeaurora.org,
heikki.krogerus@linux.intel.com, andy.shevchenko@gmail.com,
Ruslan Bilovol <ruslan.bilovol@gmail.com>
Subject: Re: [PATCH v10 0/6] Re-introduce TX FIFO resize for larger EP bursting
Date: Thu, 19 Aug 2021 22:10:56 +0200 [thread overview]
Message-ID: <a7d7f0dd-dfbb-5eef-d1da-8cbdab5fc4a7@gmail.com> (raw)
In-Reply-To: <d298df65-417b-f318-9374-b463a15d8308@ivitera.com>
Hi
Op 19-08-2021 om 09:51 schreef Pavel Hofman:
> Hi,
>
> Dne 18. 08. 21 v 21:07 Ferry Toth napsal(a):
>> Hi,
>>
>> Op 18-08-2021 om 00:00 schreef Ferry Toth:
>>> Hi,
>>>
>>> Op 16-08-2021 om 07:18 schreef Felipe Balbi:
>>>> Hi,
>>>>
>>>> Ferry Toth <fntoth@gmail.com> writes:
>>>>>> Ferry Toth <fntoth@gmail.com> writes:
>>>>>>>>>> Ferry Toth <fntoth@gmail.com> writes:
>>>>>>>>>>>>>>> Hardware name: Intel Corporation Merrifield/BODEGA BAY,
>>>>>>>>>>>>>>> BIOS 542
>>>>>>>>>>>>>>> 2015.01.21:18.19.48
>>>>>>>>>>>>>>> RIP: 0010:0x500000000
>>>>>>>>>>>>>>> Code: Unable to access opcode bytes at RIP 0x4ffffffd6.
>>>>>>>>>>>>>>> RSP: 0018:ffffa4d00045fc28 EFLAGS: 00010046
>>>>>>>>>>>>>>> RAX: 0000000500000000 RBX: ffff8cd546aed200 RCX:
>>>>>>>>>>>>>>> 0000000000000000
>>>>>>>>>>>>>>> RDX: 0000000000000000 RSI: ffff8cd547bfcae0 RDI:
>>>>>>>>>>>>>>> ffff8cd546aed200
>>>>>>>>>>>>>>> RBP: ffff8cd547bfcae0 R08: 0000000000000000 R09:
>>>>>>>>>>>>>>> 0000000000000001
>>>>>>>>>>>>>>> R10: ffff8cd541fd28c0 R11: 0000000000000000 R12:
>>>>>>>>>>>>>>> ffff8cd547342828
>>>>>>>>>>>>>>> R13: ffff8cd546aed248 R14: 0000000000000000 R15:
>>>>>>>>>>>>>>> ffff8cd548b1d000
>>>>>>>>>>>>>>> FS: 0000000000000000(0000) GS:ffff8cd57e200000(0000)
>>>>>>>>>>>>>>> knlGS:0000000000000000
>>>>>>>>>>>>>>> CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
>>>>>>>>>>>>>>> CR2: 0000000500000000 CR3: 000000000311e000 CR4:
>>>>>>>>>>>>>>> 00000000001006f0
>>>>>>>>>>>>>>> Call Trace:
>>>>>>>>>>>>>>> ? dwc3_remove_requests.constprop.0+0x14d/0x170
>>>>>>>>>>>>>>> ? __dwc3_gadget_ep_disable+0x7a/0x160
>>>>>>>>>>>>>>> ? dwc3_gadget_ep_disable+0x3d/0xd0
>>>>>>>>>>>>>>> ? usb_ep_disable+0x1c/0x
>>>>>>>>>>>>>>> ? u_audio_stop_capture+0x79/0x120 [u_audio]
>>>>>>>>>>>>>>> ? afunc_set_alt+0x73/0x80 [usb_f_uac2]
>>>>>>>> So this is triggered by a SetInterface request...
>>>>>>>>
>>>>>>>>>>>>>>> ? composite_setup+0x224/0x1b90 [libcomposite]
>>>>>>>>>>>>>>> ? __dwc3_gadget_kick_transfer+0x160/0x400
>>>>>>>>>>>>>>> ? dwc3_gadget_ep_queue+0xf3/0x1a0
>>>>>>>>>>>>>>> ? configfs_composite_setup+0x6b/0x90 [libcomposite]
>>>>>>>>>>>>>>> ? configfs_composite_setup+0x6b/0x90 [libcomposite]
>>>>>>>>>>>>>>> ? dwc3_ep0_interrupt+0x459/0xa40
>>>>>>>>>>>>>>> ? dwc3_thread_interrupt+0x8ee/0xf40
>>>>>>>>>>>>>>> ? __schedule+0x235/0x6c0
>>>>>>>>>>>>>>> ? disable_irq_nosync+0x10/0x10
>>>>>>>>>>>>>>> ? irq_thread_fn+0x1b/0x60
>>>>>>>>>>>>>>> ? irq_thread+0xc0/0x160
>>>>>>>>>>>>>>> ? irq_thread_check_affinity+0x70/0x70
>>>>>>>>>>>>>>> ? irq_forced_thread_fn+0x70/0x70
>>>>>>>>>>>>>>> ? kthread+0x122/0x140
>>>>>>>>>>>>>>> ? set_kthread_struct+0x40/0x40
>>>>>>>>>>>>>>> ? ret_from_fork+0x22/0x30
>>>>>>>>>>>>>> Do you mind enabling dwc3 traces and collecting them?
>>>>>>>>>>>>>> Trying to figure
>>>>>>>>>>>>>> out how we got here.
>>>>>>>>>>>>>>
>>>>>>>>>>>>> I'll try if I can get the same error by booting with USB in
>>>>>>>>>>>>> host mode
>>>>>>>>>>>>> and then switch to device mode. If so I can enable traces
>>>>>>>>>>>>> and collect as
>>>>>>>>>>>>> you explained me before.
>>>>>>>>>>>>>
>>>>>>>>>>>>> I'll try before monday, as then I fly for a holiday and
>>>>>>>>>>>>> will not be
>>>>>>>>>>>>> available before rc5.
>>>>>>>>>>>> you can enable all of those with kernel cmdline :-)
>>>>>>>>>>>>
>>>>>>>>>>>> https://www.kernel.org/doc/html/latest/admin-guide/kernel-parameters.html
>>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>> you need ftrace_dump_on_oops=1 and also need the correct
>>>>>>>>>>>> options on
>>>>>>>>>>>> trace_buf_size and trace_event.
>>>>>>>>>>>>
>>>>>>>>>>> On Edison-Arduino I have a switch to go to device mode, after
>>>>>>>>>>> which
>>>>>>>>>>> udev triggers a script configure gadgets through configfs.
>>>>>>>>>>>
>>>>>>>>>>> I tried to log following these instructions:
>>>>>>>>>>>
>>>>>>>>>>> https://www.kernel.org/doc/html/latest/driver-api/usb/dwc3.html#reporting-bugs
>>>>>>>>>>> <https://www.kernel.org/doc/html/latest/driver-api/usb/dwc3.html#reporting-bugs>
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>> Unfortunately the kernel crashes so badly I can not get to
>>>>>>>>>>> the ` cp
>>>>>>>>>>> /t/trace /root/trace.txt` line (after a while the watchdog
>>>>>>>>>>> kicks).
>>>>>>>>>>>
>>>>>>>>>>> What to do next?
>>>>>>>>>> Pass ftrace_dump_on_oops to kernel cmdline.
>>>>>>>>>>
>>>>>>>>> No sure if I did this right, on oops everything is pushed to
>>>>>>>>> console
>>>>>>>>> (115k2 serial), I hope nothing essential is lost.
>>>>>>>>>
>>>>>>>>> I copied the screen buffer to file see attached.
>>>>>>>> Thank you, I bet it took quite a some time :-) Anyway, looking at
>>>>>>>> the logs around Set Interface requests, we can track every endpoint
>>>>>>>> that's disabled. I'll take a guess and assume we're failing at
>>>>>>>> the last
>>>>>>>> Set Interface, that means we should have something odd with
>>>>>>>> ep6in, but
>>>>>>>> everything looks fine in the trace output:
>>>>>>>>
>>>>>>>> [ 75.823107] irq/14-d-596 0d... 42789194us :
>>>>>>>> dwc3_gadget_ep_enable: ep6in: mps 192/346 streams 16 burst 0
>>>>>>>> ring 0/0 flags E:swbp:<
>>>>>>>> [ 75.835472] irq/14-d-596 0d... 42789198us :
>>>>>>>> dwc3_alloc_request: ep6in: req 0000000002c71409 length 0/0 zsI
>>>>>>>> ==> 0
>>>>>>>> [ 75.846416] irq/14-d-596 0d... 42789202us :
>>>>>>>> dwc3_ep_queue: ep6in: req 0000000002c71409 length 0/192 zsI ==>
>>>>>>>> -115
>>>>>>>> [ 75.857360] irq/14-d-596 0d... 42789204us :
>>>>>>>> dwc3_alloc_request: ep6in: req 00000000a324f5d0 length 0/0 zsI
>>>>>>>> ==> 0
>>>>>>>> [ 75.868301] irq/14-d-596 0d... 42789206us :
>>>>>>>> dwc3_ep_queue: ep6in: req 00000000a324f5d0 length 0/192 zsI ==>
>>>>>>>> -115
>>>>>>>> [ 75.879244] irq/14-d-596 0d... 42789209us : dwc3_event:
>>>>>>>> event (000020c2): ep0in: Transfer Not Ready [0] (Not Active)
>>>>>>>> [Status Phase]
>>>>>>>> [ 75.891880] irq/14-d-596 0d... 42789211us :
>>>>>>>> dwc3_prepare_trb: ep0in: trb 000000004c0ae319 (E0:D0) buf
>>>>>>>> 000000001bded000 size 0 ctrl 00000c33 (HLcs:SC:status2)
>>>>>>>> [ 75.989131] irq/14-d-596 0d... 42789224us :
>>>>>>>> dwc3_gadget_ep_cmd: ep0in: cmd 'Start Transfer' [406] params
>>>>>>>> 00000000 1bded000 00000000 --> status: Successful
>>>>>>>> [ 76.096261] irq/14-d-596 0d... 42789272us : dwc3_event:
>>>>>>>> event (0000c042): ep0in: Transfer Complete (sIL) [Status Phase]
>>>>>>>> [ 76.107834] irq/14-d-596 0d... 42789275us :
>>>>>>>> dwc3_complete_trb: ep0out: trb 000000004c0ae319 (E0:D0) buf
>>>>>>>> 000000001bded000 size 0 ctrl 00000c32 (hLcs:SC:status2)
>>>>>>>> [ 76.122944] irq/14-d-596 0d... 42789277us :
>>>>>>>> dwc3_gadget_giveback: ep0out: req 00000000cb1bd3cd length 0/0
>>>>>>>> zsI ==> 0
>>>>>>>> [ 76.134160] irq/14-d-596 0d... 42789280us :
>>>>>>>> dwc3_prepare_trb: ep0out: trb 000000004c0ae319 (E0:D0) buf
>>>>>>>> 000000001bded000 size 8 ctrl 00000c23 (HLcs:SC:setup)
>>>>>>>> [ 76.231322] irq/14-d-596 0d... 42789292us :
>>>>>>>> dwc3_gadget_ep_cmd: ep0out: cmd 'Start Transfer' [406] params
>>>>>>>> 00000000 1bded000 00000000 --> status: Successful
>>>>>>>> [ 76.297418] kworker/-23 0d... 42789670us :
>>>>>>>> dwc3_ep_queue: ep3in: req 0000000029586135 length 0/96 ZsI ==> -115
>>>>>>>> [ 76.308278] kworker/-23 0d... 42789695us :
>>>>>>>> dwc3_prepare_trb: ep3in: trb 00000000b81213d6 (E1:D0) buf
>>>>>>>> 0000000003b7a800 size 96 ctrl 00000811 (Hlcs:sC:normal)
>>>>>>>> [ 76.395294] kworker/-23 0d... 42789707us :
>>>>>>>> dwc3_gadget_ep_cmd: ep3in: cmd 'Update Transfer' [60007] params
>>>>>>>> 00000000 00000000 00000000 --> status: Successful
>>>>>>>> [ 76.471900] irq/14-d-596 0d... 42789842us : dwc3_event:
>>>>>>>> event (0000c040): ep0out: Transfer Complete (sIL) [Setup Phase]
>>>>>>>> [ 76.489308] irq/14-d-596 0d... 42789845us :
>>>>>>>> dwc3_ctrl_req: Set Interface(Intf = 5, Alt.Setting = 0)
>>>>>>>> [ 76.505650] irq/14-d-596 0d... 42789851us :
>>>>>>>> dwc3_ep_dequeue: ep6in: req 0000000002c71409 length 0/192 zsI
>>>>>>>> ==> -115
>>>>>>>> [ 76.523315] irq/14-d-596 0d... 42789854us :
>>>>>>>> dwc3_gadget_giveback: ep6in: req 0000000002c71409 length 0/192
>>>>>>>> zsI ==> -104
>>>>>>>> [ 76.541427] irq/14-d-596 0d... 42789857us :
>>>>>>>> dwc3_free_request: ep6in: req 0000000002c71409 length 0/192 zsI
>>>>>>>> ==> -104
>>>>>>>> [ 76.559267] irq/14-d-596 0d... 42789859us :
>>>>>>>> dwc3_ep_dequeue: ep6in: req 00000000a324f5d0 length 0/192 zsI
>>>>>>>> ==> -115
>>>>>>>> [ 76.576937] irq/14-d-596 0d... 42789861us :
>>>>>>>> dwc3_gadget_giveback: ep6in: req 00000000a324f5d0 length 0/192
>>>>>>>> zsI ==> -104
>>>>>>>> [ 76.595046] irq/14-d-596 0d... 42789862us :
>>>>>>>> dwc3_free_request: ep6in: req 00000000a324f5d0 length 0/192 zsI
>>>>>>>> ==> -104
>>>>>>>> [ 76.612892] irq/14-d-596 0d... 42789865us :
>>>>>>>> dwc3_gadget_ep_disable: ep6in: mps 192/346 streams 16 burst 0
>>>>>>>> ring 0/0 flags E:swbp:<
>>>>>>>> [ 76.665535] irq/14-d-596 0d... 42789873us : dwc3_event:
>>>>>>>> event (000020c2): ep0in: Transfer Not Ready [0] (Not Active)
>>>>>>>> [Status Phase]
>>>>>>>> [ 76.684716] irq/14-d-596 0d... 42789875us :
>>>>>>>> dwc3_prepare_trb: ep0in: trb 000000004c0ae319 (E0:D0) buf
>>>>>>>> 000000001bded000 size 0 ctrl 00000c33 (HLcs:SC:status2)
>>>>>>>> [ 76.819195] irq/14-d-596 0d... 42789886us :
>>>>>>>> dwc3_gadget_ep_cmd: ep0in: cmd 'Start Transfer' [406] params
>>>>>>>> 00000000 1bded000 00000000 --> status: Successful
>>>>>>>> [ 76.926324] irq/14-d-596 0d... 42789930us : dwc3_event:
>>>>>>>> event (0000c042): ep0in: Transfer Complete (sIL) [Status Phase]
>>>>>>>> [ 76.937892] irq/14-d-596 0d... 42789933us :
>>>>>>>> dwc3_complete_trb: ep0out: trb 000000004c0ae319 (E0:D0) buf
>>>>>>>> 000000001bded000 size 0 ctrl 00000c32 (hLcs:SC:status2)
>>>>>>>> [ 76.953003] irq/14-d-596 0d... 42789935us :
>>>>>>>> dwc3_gadget_giveback: ep0out: req 00000000cb1bd3cd length 0/0
>>>>>>>> zsI ==> 0
>>>>>>>> [ 76.964217] irq/14-d-596 0d... 42789938us :
>>>>>>>> dwc3_prepare_trb: ep0out: trb 000000004c0ae319 (E0:D0) buf
>>>>>>>> 000000001bded000 size 8 ctrl 00000c23 (HLcs:SC:setup)
>>>>>>>> [ 77.061379] irq/14-d-596 0d... 42789950us :
>>>>>>>> dwc3_gadget_ep_cmd: ep0out: cmd 'Start Transfer' [406] params
>>>>>>>> 00000000 1bded000 00000000 --> status: Successful
>>>>>>>> [ 77.168595] irq/14-d-596 0d... 42790509us : dwc3_event:
>>>>>>>> event (0000c040): ep0out: Transfer Complete (sIL) [Setup Phase]
>>>>>>>> [ 77.180159] irq/14-d-596 0d... 42790512us :
>>>>>>>> dwc3_ctrl_req: Get String Descriptor(Index = 18, Length = 255)
>>>>>>>> [ 77.190578] irq/14-d-596 0d... 42790537us :
>>>>>>>> dwc3_prepare_trb: ep0in: trb 000000004c0ae319 (E0:D0) buf
>>>>>>>> 0000000003b68000 size 36 ctrl 00000c53 (HLcs:SC:data)
>>>>>>>> [ 77.287648] irq/14-d-596 0d... 42790550us :
>>>>>>>> dwc3_gadget_ep_cmd: ep0in: cmd 'Start Transfer' [406] params
>>>>>>>> 00000000 1bded000 00000000 --> status: Successful
>>>>>>>> [ 77.333107] irq/14-d-596 0d... 42790557us : dwc3_event:
>>>>>>>> event (000010c2): ep0in: Transfer Not Ready [0] (Not Active)
>>>>>>>> [Data Phase]
>>>>>>>> [ 77.407223] irq/14-d-596 0d... 42790575us : dwc3_event:
>>>>>>>> event (000090c2): ep0in: Transfer Not Ready [0] (Active) [Data
>>>>>>>> Phase]
>>>>>>>> [ 77.480985] irq/14-d-596 0d... 42790588us : dwc3_event:
>>>>>>>> event (0000c042): ep0in: Transfer Complete (sIL) [Data Phase]
>>>>>>>> [ 77.492376] irq/14-d-596 0d... 42790590us :
>>>>>>>> dwc3_complete_trb: ep0out: trb 000000004c0ae319 (E0:D0) buf
>>>>>>>> 0000000003b68000 size 0 ctrl 00000c52 (hLcs:SC:data)
>>>>>>>> [ 77.507221] irq/14-d-596 0d... 42790595us :
>>>>>>>> dwc3_gadget_giveback: ep0out: req 00000000cb1bd3cd length 36/36
>>>>>>>> ZsI ==> 0
>>>>>>>> [ 77.518609] irq/14-d-596 0d... 42790597us : dwc3_event:
>>>>>>>> event (000020c0): ep0out: Transfer Not Ready [0] (Not Active)
>>>>>>>> [Status Phase]
>>>>>>>> [ 77.531332] irq/14-d-596 0d... 42790598us :
>>>>>>>> dwc3_prepare_trb: ep0out: trb 000000004c0ae319 (E0:D0) buf
>>>>>>>> 000000001bded000 size 0 ctrl 00000c43 (HLcs:SC:status3)
>>>>>>>> [ 77.628669] irq/14-d-596 0d... 42790609us :
>>>>>>>> dwc3_gadget_ep_cmd: ep0out: cmd 'Start Transfer' [406] params
>>>>>>>> 00000000 1bded000 00000000 --> status: Successful
>>>>>>>>
>>>>>>>> Do you mind adding a few prints in dwc3_remove_requests to tell
>>>>>>>> us which
>>>>>>>> endpoint is being processed? Then we'll know for sure which one
>>>>>>>> caused
>>>>>>>> the crash.
>>>>>>>>
>>>>>>> I wouldn't mind but am leaving on a holiday, won't have time
>>>>>>> until 6 aug.
>>>>>> not a problem, we'll still be here when you're back :-)
>>>>> Well, let's go then :-)
>>>>>
>>>>> To get back in the mood I have retested 5.13.0, 5.14.0-rc1, 5.14.0-rc2
>>>>> and 5.14.0-rc5.
>>>>>
>>>>> I find that 5.13.0 works fine, and the issue starts from 5.14.0-rc1.
>>>> That's great finding. We have a bisection point. There are a total of
>>>> 13764 commits between v5.13 and v5.14-rc1
>>>>
>>>> $ git rev-list --count v5.13..v5.14-rc1
>>>> 13764
>>>>
>>>> git bisect should find the offending commit in at most 14 tries. That's
>>>> not too bad.
>>> I correctly guesstimated that the problem got introduced by the usb
>>> merge 79160a60
>>>
>>> "Merge tag 'usb-5.14-rc1' of
>>> git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb"
>>>
>>> 116 commits(7 bisects).
>>>
>>> 24f779dac8f3efb9629adc0e486914d93dc45517 is the first bad commit
>>>
>>> "usb: gadget: f_uac2/u_audio: add feedback endpoint support"
>>>
>>> Ruslan's 3 patches are related to each other so I reverted all three
>>> 24f779da...e89bb428 and applied the reverts to rc1.
>>>
>>> I can confirm this indeed resolves the problem in rc1.
>>>
>>> Is late now, tomorrow evening I will apply the reverts to rc6.
>>
>> With these reverts rc6 works fine as well.
>>
>> So, where do we go from here?
>>
>
> I know the patches have been tested on dwc2 (by me and others). I do
> not know if Ruslan or Jerome tested them on dwc3 but probably not.
> Ruslan has talked about RPi (my case too) and BeagleboneBlack, both with
> dwc2. Perhaps the dwc2 behaves a bit differently than dwc3?
>
> The patches add a new EP-IN for async feedback. I am sorry I have not
> followed your long thread (it started as unrelated to uac). Does the
> problem appear with f_uac1 or f_uac2? Please how have you reached the
> above problem?
I'm sorry too. I first believed the issue was related to the patch
mentioned in the subject line.
The problem appaers with f_uac2. I bost Edison_Arduino board in host
mode (there is a switch allowing to select host/device mode). When
flipping the switch to device mode udev run a script:
But as I am using configfs (excerpt follows) and just disabling the last
2 line resolves the issue, I'm guessing uac2 is the issue. Or exceeding
the available resources.
# Create directory structure
mkdir "${GADGET_BASE_DIR}"
cd "${GADGET_BASE_DIR}"
mkdir -p configs/c.1/strings/0x409
mkdir -p strings/0x409
# Serial device
mkdir functions/gser.usb0
ln -s functions/gser.usb0 configs/c.1/
###
# Ethernet device
mkdir functions/eem.usb0
echo "${DEV_ETH_ADDR}" > functions/eem.usb0/dev_addr
echo "${HOST_ETH_ADDR}" > functions/eem.usb0/host_addr
ln -s functions/eem.usb0 configs/c.1/
# Mass Storage device
mkdir functions/mass_storage.usb0
echo 1 > functions/mass_storage.usb0/stall
echo 0 > functions/mass_storage.usb0/lun.0/cdrom
echo 0 > functions/mass_storage.usb0/lun.0/ro
echo 0 > functions/mass_storage.usb0/lun.0/nofua
echo "${USBDISK}" > functions/mass_storage.usb0/lun.0/file
ln -s functions/mass_storage.usb0 configs/c.1/
# UAC2 device
mkdir functions/uac2.usb0
ln -s functions/uac2.usb0 configs/c.1
....
> u_audio_stop_capture calls free_ep_fback
> https://elixir.bootlin.com/linux/v5.14-rc6/source/drivers/usb/gadget/function/u_audio.c#L414
> which clears the feedback request prm->req_fback.
>
> Then (reading from your the call trace), usb_ep_disable calls
> dwc3_gadget_ep_disable which for every request in the EP calls
> dwc3_remove_requests which gives every found request back to the gadget
> function, IIUC by calling the complete method of the request
> https://elixir.bootlin.com/linux/v5.14-rc6/source/drivers/usb/gadget/udc/core.c#L912
> . Perhaps the problem is somewhere here?
>
> The dwc2 gadget has its endpoint_disable method a bit different
> https://elixir.bootlin.com/linux/v5.14-rc6/source/drivers/usb/dwc2/gadget.c#L4200
> ->
> https://elixir.bootlin.com/linux/v5.14-rc6/source/drivers/usb/dwc2/gadget.c#L3251
> ->
> https://elixir.bootlin.com/linux/v5.14-rc6/source/drivers/usb/dwc2/gadget.c#L2090
> which also calls usb_gadget_giveback_request
> https://elixir.bootlin.com/linux/v5.14-rc6/source/drivers/usb/dwc2/gadget.c#L2126
> . Perhaps there is some minor but important difference in processing the
> requests when disabling the endpoint between dwc2 and dwc3?
>
> Thanks,
>
> Pavel.
next prev parent reply other threads:[~2021-08-19 20:11 UTC|newest]
Thread overview: 73+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-06-17 9:58 [PATCH v10 0/6] Re-introduce TX FIFO resize for larger EP bursting Wesley Cheng
2021-06-17 9:58 ` [PATCH v10 1/6] usb: gadget: udc: core: Introduce check_config to verify USB configuration Wesley Cheng
2021-06-17 11:09 ` Greg KH
2021-06-22 5:27 ` Wesley Cheng
2021-06-17 9:58 ` [PATCH v10 2/6] usb: gadget: configfs: Check USB configuration before adding Wesley Cheng
2021-06-17 11:07 ` Greg KH
2021-06-22 5:27 ` Wesley Cheng
2021-06-22 6:05 ` Greg KH
2021-06-23 9:38 ` Wesley Cheng
2021-06-23 11:35 ` Greg KH
2021-06-23 21:44 ` Wesley Cheng
2021-06-24 12:09 ` Greg KH
2021-06-17 9:58 ` [PATCH v10 3/6] usb: dwc3: Resize TX FIFOs to meet EP bursting requirements Wesley Cheng
2021-06-17 11:10 ` Greg KH
2021-06-22 5:27 ` Wesley Cheng
2021-06-22 6:06 ` Greg KH
2021-06-17 17:56 ` kernel test robot
2021-06-17 18:01 ` kernel test robot
2021-06-17 9:58 ` [PATCH v10 4/6] of: Add stub for of_add_property() Wesley Cheng
2021-06-17 9:58 ` [PATCH v10 5/6] usb: dwc3: dwc3-qcom: Enable tx-fifo-resize property by default Wesley Cheng
2021-06-17 11:12 ` Greg KH
2021-06-17 18:04 ` kernel test robot
2021-06-18 4:35 ` Jack Pham
2021-06-17 9:58 ` [PATCH v10 6/6] dt-bindings: usb: dwc3: Update dwc3 TX fifo properties Wesley Cheng
2021-06-17 21:01 ` [PATCH v10 0/6] Re-introduce TX FIFO resize for larger EP bursting Ferry Toth
2021-06-17 21:48 ` Wesley Cheng
[not found] ` <f5ed0ee7-e333-681f-0f1a-d0227562204b@gmail.com>
2021-06-17 22:25 ` Wesley Cheng
2021-06-19 12:40 ` Ferry Toth
2021-06-22 18:38 ` Wesley Cheng
2021-06-22 20:09 ` Ferry Toth
2021-06-22 22:00 ` Wesley Cheng
2021-06-22 22:12 ` Ferry Toth
2021-06-23 7:50 ` Wesley Cheng
2021-06-25 21:10 ` Ferry Toth
2021-06-25 21:19 ` Wesley Cheng
2021-06-25 22:31 ` Ferry Toth
2021-07-22 18:43 ` Ferry Toth
2021-07-23 6:59 ` Felipe Balbi
[not found] ` <d9aef50c-4bd1-4957-13d8-0b6a14b9fcd0@gmail.com>
2021-07-23 11:23 ` Felipe Balbi
2021-07-24 20:59 ` Ferry Toth
2021-07-24 21:19 ` Andy Shevchenko
2021-07-24 22:56 ` Ferry Toth
2021-07-25 6:05 ` Felipe Balbi
2021-07-25 13:32 ` Ferry Toth
2021-07-25 14:05 ` Felipe Balbi
2021-07-25 16:54 ` Ferry Toth
2021-07-26 5:57 ` Felipe Balbi
2021-07-26 14:33 ` Wesley Cheng
2021-07-26 21:51 ` Ferry Toth
2021-08-15 20:56 ` Ferry Toth
2021-08-16 5:18 ` Felipe Balbi
2021-08-17 22:00 ` Ferry Toth
2021-08-18 19:07 ` Ferry Toth
2021-08-19 7:51 ` Pavel Hofman
2021-08-19 20:10 ` Ferry Toth [this message]
2021-08-19 21:04 ` Pavel Hofman
2021-08-21 2:57 ` Thinh Nguyen
2021-08-22 20:10 ` Ferry Toth
2021-08-23 7:57 ` Pavel Hofman
2021-09-02 0:28 ` Jack Pham
2021-09-02 22:58 ` Thinh Nguyen
2021-08-22 19:43 ` Ferry Toth
2021-08-23 14:59 ` Pavel Hofman
2021-08-23 15:21 ` Andy Shevchenko
2021-08-23 15:34 ` Pavel Hofman
2021-08-23 18:54 ` Ferry Toth
2021-08-23 22:50 ` Thinh Nguyen
2021-08-24 5:39 ` Pavel Hofman
2021-08-24 13:44 ` Ferry Toth
[not found] ` <7ffab777-0f77-f949-f70f-7bf34c504381@gmail.com>
2021-08-26 1:18 ` Thinh Nguyen
2021-08-26 7:30 ` Ferry Toth
2021-08-26 13:35 ` Pavel Hofman
2021-08-19 7:55 ` Andy Shevchenko
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=a7d7f0dd-dfbb-5eef-d1da-8cbdab5fc4a7@gmail.com \
--to=fntoth@gmail.com \
--cc=agross@kernel.org \
--cc=andy.shevchenko@gmail.com \
--cc=balbi@kernel.org \
--cc=bjorn.andersson@linaro.org \
--cc=devicetree@vger.kernel.org \
--cc=frowand.list@gmail.com \
--cc=gregkh@linuxfoundation.org \
--cc=heikki.krogerus@linux.intel.com \
--cc=jackp@codeaurora.org \
--cc=linux-arm-msm@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-usb@vger.kernel.org \
--cc=pavel.hofman@ivitera.com \
--cc=robh+dt@kernel.org \
--cc=ruslan.bilovol@gmail.com \
--cc=wcheng@codeaurora.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).