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From: bugzilla-daemon@bugzilla.kernel.org
To: linux-usb@vger.kernel.org
Subject: [Bug 209555] dwc2 driver stops working after sudden disconnect
Date: Wed, 07 Oct 2020 20:00:22 +0000	[thread overview]
Message-ID: <bug-209555-208809-00s8GYVO5Z@https.bugzilla.kernel.org/> (raw)
In-Reply-To: <bug-209555-208809@https.bugzilla.kernel.org/>

https://bugzilla.kernel.org/show_bug.cgi?id=209555

--- Comment #1 from Tomasz Grobelny (tomasz@grobelny.net) ---
Here is annotated dmesg without debugging info:

[   31.709214] USB_PWR_EN: disabling
//here I connect the cable and run my program
[   54.771552] Mass Storage Function, version: 2009/09/11
[   54.771561] LUN: removable file: (no medium)
[   54.781721] file system registered
[   54.782484] read descriptors
[   54.782495] read strings
[   54.786939] dwc2 ff400000.usb: bound driver configfs-gadget
[   54.976434] dwc2 ff400000.usb: new device is high-speed
[   55.090994] dwc2 ff400000.usb: new device is high-speed
[   55.142436] dwc2 ff400000.usb: new address 4
[   56.219325] ffs_data_put(): freeing
[   56.219828] unloading
//here the switch to AOA mode happens: it is as if the device was disconected
and entirely new device (different vid, pid) connected
[   56.257710] file system registered
[   56.258362] read descriptors
[   56.258373] read strings
[   56.262135] dwc2 ff400000.usb: bound driver configfs-gadget
[   56.454364] dwc2 ff400000.usb: new device is high-speed
[   56.568367] dwc2 ff400000.usb: new device is high-speed
[   56.620390] dwc2 ff400000.usb: new address 5
// here the cable is disconnected
[   79.288505] dwc2 ff400000.usb: dwc2_hsotg_ep_stop_xfr: timeout
DIEPINT.NAKEFF
[   79.288625] dwc2 ff400000.usb: dwc2_hsotg_ep_stop_xfr: timeout
DOEPCTL.EPDisable
[   79.299850] dwc2 ff400000.usb: dwc2_flush_tx_fifo:  HANG! AHB Idle GRSCTL
[   79.299982] dwc2 ff400000.usb: dwc2_hsotg_ep_stop_xfr: timeout
GINTSTS.GOUTNAKEFF
[   79.300105] dwc2 ff400000.usb: dwc2_hsotg_ep_stop_xfr: timeout
DOEPCTL.EPDisable
[   79.307060] ffs_data_put(): freeing
[   79.307355] unloading
// rmmod dwc2 && modprobe dwc2
[  119.388282] dwc2 ff400000.usb: supply vusb_d not found, using dummy
regulator
[  119.388349] dwc2 ff400000.usb: supply vusb_a not found, using dummy
regulator
[  119.388500] dwc2 ff400000.usb: Bad value for GSNPSID: 0x00000000
// run my program again, as you see it doesn't reach the "bound driver
configfs-gadget" line seen above
[  255.814129] Mass Storage Function, version: 2009/09/11
[  255.814138] LUN: removable file: (no medium)
[  255.814545] file system registered
[  255.815119] read descriptors
[  255.815128] read strings

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  reply	other threads:[~2020-10-07 20:00 UTC|newest]

Thread overview: 30+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-10-06 21:59 [Bug 209555] New: dwc2 driver stops working after sudden disconnect bugzilla-daemon
2020-10-07 20:00 ` bugzilla-daemon [this message]
2020-10-08  7:46 ` [Bug 209555] " bugzilla-daemon
2020-10-08 19:47 ` bugzilla-daemon
2020-10-09  6:47 ` bugzilla-daemon
2021-02-26  1:43 ` bugzilla-daemon
2021-07-24 16:42 ` bugzilla-daemon
2021-07-25  5:45   ` Minas Harutyunyan
2021-07-25  5:45 ` bugzilla-daemon
2021-07-25  6:55 ` bugzilla-daemon
2021-07-25  7:16   ` Minas Harutyunyan
2021-07-25  7:23     ` Minas Harutyunyan
2021-07-25  7:17 ` bugzilla-daemon
2021-07-25  7:23 ` bugzilla-daemon
2021-07-25  8:52 ` bugzilla-daemon
2021-07-25 14:25 ` bugzilla-daemon
2021-07-25 15:14 ` bugzilla-daemon
2021-07-26  5:08 ` bugzilla-daemon
2021-12-02 23:42 ` bugzilla-daemon
2021-12-03  0:20 ` bugzilla-daemon
2021-12-03  0:40 ` bugzilla-daemon
2021-12-03  0:43 ` bugzilla-daemon
2021-12-03  0:44 ` bugzilla-daemon
2021-12-03  1:08 ` bugzilla-daemon
2021-12-03  1:47 ` bugzilla-daemon
2021-12-07  2:13 ` bugzilla-daemon
2022-02-19 11:11 ` bugzilla-daemon
2022-02-19 11:11 ` bugzilla-daemon
2022-05-18 10:20 ` bugzilla-daemon
2023-05-03  1:56 ` bugzilla-daemon

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