Hi Yousaf,
On 01/07/2015 09:47 AM, Kaukab, Yousaf wrote:
>> -----Original Message-----
>> From: Dinh Nguyen [mailto:dinguyen@xxxxxxxxxxxxxxxxxxxxx]
>> Sent: Wednesday, January 7, 2015 4:39 PM
>> To: Kaukab, Yousaf; Paul Zimmerman; linux-usb@xxxxxxxxxxxxxxx; balbi@xxxxxx
>> Cc: Herrero, Gregory; sergei.shtylyov@xxxxxxxxxxxxxxxxxx;
>> r.baldyga@xxxxxxxxxxx
>> Subject: Re: [PATCH v2 00/30] usb: updates for dwc2 gadget driver
>>
>> On 01/07/2015 09:34 AM, Kaukab, Yousaf wrote:
>>> Hi,
>>>
>>>> -----Original Message-----
>>>> From: Dinh Nguyen [mailto:dinguyen@xxxxxxxxxxxxxxxxxxxxx]
>>>> Sent: Wednesday, January 7, 2015 1:01 AM
>>>> To: Paul Zimmerman; Kaukab, Yousaf; linux-usb@xxxxxxxxxxxxxxx;
>> balbi@xxxxxx
>>>> Cc: Herrero, Gregory; sergei.shtylyov@xxxxxxxxxxxxxxxxxx;
>>>> r.baldyga@xxxxxxxxxxx
>>>> Subject: Re: [PATCH v2 00/30] usb: updates for dwc2 gadget driver
>>>>
>>>> On 01/06/2015 05:47 PM, Dinh Nguyen wrote:
>>>>> On 01/05/2015 01:16 PM, Paul Zimmerman wrote:
>>>>>> Adding Dinh to CC.
>>>>>>
>>>>>> Robert, Dinh, I would like to have your tested-bys for this series, please.
>>>>>>
>>>>>
>>>>> This patch series is producing this error on the SOCFPGA platform.
>>>>> I'll try to bisect to a specific patch.
>>>>>
>>>>> root@socfpga_cyclone5:~# [ 47.929743] dwc2 ffb40000.usb: new device is
>>>>> low-speed
>>>>> [ 63.873596] dwc2 ffb40000.usb: new device is low-speed
>>>>> [ 64.219220] dwc2 ffb40000.usb: new device is low-speed
>>>>> [ 64.421495] dwc2 ffb40000.usb: new device is low-speed
>>>>> [ 64.834505] dwc2 ffb40000.usb: new device is high-speed
>>>>> [ 69.899695] ------------[ cut here ]------------
>>>>> [ 69.904315] WARNING: CPU: 0 PID: 0 at drivers/usb/dwc2/gadget.c:1352
>>>>> s3c_hsotg_rx_data+0xc0/0xd4()
>>>>> [ 69.913230] Modules linked in: g_mass_storage usb_f_mass_storage
>>>>> libcomposite
>>>>> [ 69.920385] CPU: 0 PID: 0 Comm: swapper/0 Not tainted
>>>>> 3.19.0-rc1-00090-g4864f14 #4
>>>>> [ 69.927917] Hardware name: Altera SOCFPGA
>>>>> [ 69.931936] [<c0014d24>] (unwind_backtrace) from [<c001173c>]
>>>>> (show_stack+0x10/0x14)
>>>>> [ 69.939654] [<c001173c>] (show_stack) from [<c0461c74>]
>>>>> (dump_stack+0x74/0x90)
>>>>> [ 69.946857] [<c0461c74>] (dump_stack) from [<c0021138>]
>>>>> (warn_slowpath_common+0x78/0xb4)
>>>>> [ 69.954916] [<c0021138>] (warn_slowpath_common) from [<c0021190>]
>>>>> (warn_slowpath_null+0x1c/0x24)
>>>>> [ 69.963669] [<c0021190>] (warn_slowpath_null) from [<c030278c>]
>>>>> (s3c_hsotg_rx_data+0xc0/0xd4)
>>>>> [ 69.972162] [<c030278c>] (s3c_hsotg_rx_data) from [<c0304ac0>]
>>>>> (s3c_hsotg_irq+0x454/0x520)
>>>>> [ 69.980394] [<c0304ac0>] (s3c_hsotg_irq) from [<c0058c3c>]
>>>>> (handle_irq_event_percpu+0x5c/0x1f4)
>>>>> [ 69.989056] [<c0058c3c>] (handle_irq_event_percpu) from [<c0058e18>]
>>>>> (handle_irq_event+0x44/0x64)
>>>>> [ 69.997892] [<c0058e18>] (handle_irq_event) from [<c005b8d8>]
>>>>> (handle_fasteoi_irq+0xa8/0x180)
>>>>> [ 70.006382] [<c005b8d8>] (handle_fasteoi_irq) from [<c005856c>]
>>>>> (generic_handle_irq+0x20/0x30)
>>>>> [ 70.014958] [<c005856c>] (generic_handle_irq) from [<c0058668>]
>>>>> (__handle_domain_irq+0x54/0xb4)
>>>>> [ 70.023619] [<c0058668>] (__handle_domain_irq) from [<c0008638>]
>>>>> (gic_handle_irq+0x20/0x5c)
>>>>> [ 70.031937] [<c0008638>] (gic_handle_irq) from [<c0012240>]
>>>>> (__irq_svc+0x40/0x54)
>>>>> [ 70.039384] Exception stack(0xc0635f60 to 0xc0635fa8)
>>>>> [ 70.044415] 5f60: 00000000 00000000 c0635fb0 c001cee0 c066cca0
>>>>> c063c498 c046908c c066c4b2
>>>>> [ 70.052556] 5f80: c066cca0 00000001 ef7fccc0 00000000 01000000
>>>>> c0635fa8 c000f0fc c000f100
>>>>> [ 70.060694] 5fa0: 600f0013 ffffffff
>>>>> [ 70.064174] [<c0012240>] (__irq_svc) from [<c000f100>]
>>>>> (arch_cpu_idle+0x30/0x3c)
>>>>> [ 70.071545] [<c000f100>] (arch_cpu_idle) from [<c0050364>]
>>>>> (cpu_startup_entry+0x138/0x224)
>>>>> [ 70.079783] [<c0050364>] (cpu_startup_entry) from [<c05ebbb0>]
>>>>> (start_kernel+0x304/0x35c)
>>>>> [ 70.087921] ---[ end trace 66b76f6dcbbda3bf ]---
>>>>> [ 79.911589] dwc2 ffb40000.usb: new device is low-speed
>>>>>
>>>>> Dinh
>>>>>
>>>>
>>>> It looks like this patch is producing the above error.
>>>>
>>>> usb: dwc2: gadget: manage ep0 state in software
>>>>
>>>> Manage ep0 state in software to add handling of status OUT stage.
>>>> Just toggling hsotg->setup in s3c_hsotg_handle_outdone leaves it in
>>>> wrong state in 2-stage control transfers.
>>>> Moreover, don't call s3c_hsotg_handle_outdone both from SetupDone
>> and
>>>> OutDone. Only use one of them, as for a setup packet we get both.
>>>>
>>>> Signed-off-by: Mian Yousaf Kaukab <yousaf.kaukab@xxxxxxxxx>
>>>
>>> Thank you for testing this patchset.
>>>
>>> I have tested g_mass_storage without dma in my setup and it is working fine.
>>
>> Did you also test with DMA enabled?
>
> Yes, it's working as well. No issue.
> s3c_hsotg_rx_data() should not be called when DMA enabled. That's why I only mentioned without-dma case.
>
>>
>>> As I don't see this problem, I need some help in figuring out what's going on.
>>> Would it be possible for you to provide me following?
>>> 1) Console output after enabling CONFIG_USB_DWC2_DEBUG
>>> 2) Function trace
>>> echo s3c_* > /sys/kernel/debug/tracing/set_ftrace_filter
>>> echo function > /sys/kernel/debug/tracing/current_tracer
>>> 3) Values of following registers GSNPSID, GHWCFG1-GHWCFG4
>>>
>>
>> I'll try to get these out for your shortly.
>
> Thanks!
>
I've also attached a text file of the log.
root@socfpga_cyclone5:~# insmod g_mass_storage.ko file=/dev/mmcblk0p1
[ 144.084933] Number of LUNs=8
[ 144.087817] Mass Storage Function, version: 2009/09/11
[ 144.092936] LUN: removable file: (no medium)
[ 144.097228] Number of LUNs=1
[ 144.100217] LUN: file: /dev/mmcblk0p1
[ 144.103867] Number of LUNs=1
[ 144.106941] g_mass_storage gadget: Mass Storage Gadget, version:
2009/09/11
[ 144.113874] g_mass_storage gadget: userspace failed to provide
iSerialNumber
[ 144.120922] g_mass_storage gadget: g_mass_storage ready
[ 144.129387] dwc2 ffb40000.usb: bound driver g_mass_storage
root@socfpga_cyclone5:~#
root@socfpga_cyclone5:~# [ 144.353610] dwc2 ffb40000.usb: new device is
high-speed
[ 144.527612] dwc2 ffb40000.usb: new device is high-speed
[ 149.595802] ------------[ cut here ]------------
[ 149.600420] WARNING: CPU: 0 PID: 0 at drivers/usb/dwc2/gadget.c:1352
s3c_hsotg_rx_data+0xcc/0x144()
[ 149.609423] Modules linked in: g_mass_storage usb_f_mass_storage
libcomposite
[ 149.616582] CPU: 0 PID: 0 Comm: swapper/0 Not tainted
3.19.0-rc1-00090-g4864f14 #14
[ 149.624202] Hardware name: Altera SOCFPGA
[ 149.628222] [<c00165e4>] (unwind_backtrace) from [<c00124f0>]
(show_stack+0x20/0x24)
[ 149.635941] [<c00124f0>] (show_stack) from [<c04c7374>]
(dump_stack+0x7c/0x98)
[ 149.643147] [<c04c7374>] (dump_stack) from [<c0023ec4>]
(warn_slowpath_common+0x88/0xc4)
[ 149.651208] [<c0023ec4>] (warn_slowpath_common) from [<c0023f2c>]
(warn_slowpath_null+0x2c/0x34)
[ 149.659961] [<c0023f2c>] (warn_slowpath_null) from [<c034ccc4>]
(s3c_hsotg_rx_data+0xcc/0x144)
[ 149.668542] [<c034ccc4>] (s3c_hsotg_rx_data) from [<c034f884>]
(s3c_hsotg_irq+0x3e0/0x708)
[ 149.676777] [<c034f884>] (s3c_hsotg_irq) from [<c0060d30>]
(handle_irq_event_percpu+0x68/0x204)
[ 149.685442] [<c0060d30>] (handle_irq_event_percpu) from [<c0060f20>]
(handle_irq_event+0x54/0x74)
[ 149.694280] [<c0060f20>] (handle_irq_event) from [<c0063e2c>]
(handle_fasteoi_irq+0xb8/0x190)
[ 149.702771] [<c0063e2c>] (handle_fasteoi_irq) from [<c0060548>]
(generic_handle_irq+0x30/0x40)
[ 149.711348] [<c0060548>] (generic_handle_irq) from [<c0060694>]
(__handle_domain_irq+0x64/0xc4)
[ 149.720012] [<c0060694>] (__handle_domain_irq) from [<c00086bc>]
(gic_handle_irq+0x30/0x6c)
[ 149.728333] [<c00086bc>] (gic_handle_irq) from [<c00130c0>]
(__irq_svc+0x40/0x54)
[ 149.735781] Exception stack(0xc06fbf38 to 0xc06fbf80)
[ 149.740811] bf20:
00000000 00000000
[ 149.748953] bf40: c06fbf90 c001f600 c0702c60 c0733560 c0702498
c04cf08c c0732d73 413fc090
[ 149.757096] bf60: c0733560 c06fbf8c c06fbf90 c06fbf80 c000f934
c000f938 60000013 ffffffff
[ 149.765243] [<c00130c0>] (__irq_svc) from [<c000f938>]
(arch_cpu_idle+0x40/0x4c)
[ 149.772616] [<c000f938>] (arch_cpu_idle) from [<c0057670>]
(cpu_startup_entry+0x144/0x22c)
[ 149.780857] [<c0057670>] (cpu_startup_entry) from [<c04c2bc4>]
(rest_init+0x70/0x88)
[ 149.788581] [<c04c2bc4>] (rest_init) from [<c069bc60>]
(start_kernel+0x310/0x368)
[ 149.796030] ---[ end trace 05bdb288fcc8864d ]---
[ 155.793924] random: nonblocking pool is initialized
cat /sys/kernel/debug/tracing/r trace
# tracer: function
#
# entries-in-buffer/entries-written: 130/130 #P:2
#
# _-----=> irqs-off
# / _----=> need-resched
# | / _---=> hardirq/softirq
# || / _--=> preempt-depth
# ||| / delay
# TASK-PID CPU# |||| TIMESTAMP FUNCTION
# | | | |||| | |
<idle>-0 [000] d.h. 50.383808: s3c_hsotg_irq
<-handle_irq_event_percpu
<idle>-0 [000] d.h. 74.367931: s3c_hsotg_irq
<-handle_irq_event_percpu
<idle>-0 [000] d.h. 74.921390: s3c_hsotg_irq
<-handle_irq_event_percpu
insmod-656 [001] .n.. 144.084905:
s3c_hsotg_ep_alloc_request <-composite_dev_prepare
insmod-656 [001] .n.. 144.126144: s3c_hsotg_udc_start
<-udc_bind_to_driver
insmod-656 [001] .n.. 144.126153: s3c_hsotg_phy_enable
<-s3c_hsotg_udc_start
insmod-656 [001] dn.. 144.126172: s3c_hsotg_init
<-s3c_hsotg_udc_start
insmod-656 [001] dn.. 144.126187: s3c_hsotg_init_fifo
<-s3c_hsotg_init
insmod-656 [001] dn.. 144.126201:
s3c_hsotg_core_init_disconnected <-s3c_hsotg_udc_start
insmod-656 [001] dn.. 144.126203: s3c_hsotg_corereset
<-s3c_hsotg_core_init_disconnected
insmod-656 [001] dn.. 144.126223: s3c_hsotg_init_fifo
<-s3c_hsotg_core_init_disconnected
insmod-656 [001] dn.. 144.126248: s3c_hsotg_en_gsint
<-s3c_hsotg_core_init_disconnected
insmod-656 [001] dn.. 144.126259: s3c_hsotg_en_gsint
<-s3c_hsotg_core_init_disconnected
insmod-656 [001] dn.. 144.126269: s3c_hsotg_ctrl_epint
<-s3c_hsotg_core_init_disconnected
insmod-656 [001] dn.. 144.126271: s3c_hsotg_ctrl_epint
<-s3c_hsotg_core_init_disconnected
insmod-656 [001] dn.. 144.126293: s3c_hsotg_ep0_mps
<-s3c_hsotg_core_init_disconnected
insmod-656 [001] dn.. 144.126295: s3c_hsotg_ep0_mps
<-s3c_hsotg_core_init_disconnected
insmod-656 [001] dn.. 144.126297: s3c_hsotg_enqueue_setup
<-s3c_hsotg_core_init_disconnected
insmod-656 [001] dn.. 144.126308:
s3c_hsotg_ep_queue.isra.7 <-s3c_hsotg_enqueue_setup
insmod-656 [001] dn.. 144.126323: s3c_hsotg_start_req
<-s3c_hsotg_ep_queue.isra.7
insmod-656 [001] dn.. 144.126382: s3c_hsotg_ctrl_epint
<-s3c_hsotg_start_req
insmod-656 [001] .n.. 144.134867: s3c_hsotg_pullup
<-udc_bind_to_driver
sh-650 [000] d.h. 144.137903: s3c_hsotg_irq
<-handle_irq_event_percpu
<idle>-0 [000] d.h. 144.140945: s3c_hsotg_irq
<-handle_irq_event_percpu
<idle>-0 [000] d.h. 144.343073: s3c_hsotg_irq
<-handle_irq_event_percpu
<idle>-0 [000] d.h. 144.343122: s3c_hsotg_disconnect
<-s3c_hsotg_irq
<idle>-0 [000] d.h. 144.343124:
s3c_hsotg_complete_request <-kill_all_requests
<idle>-0 [000] d.h. 144.343139: s3c_hsotg_complete_setup
<-usb_gadget_giveback_request
<idle>-0 [000] d.h. 144.343152:
s3c_hsotg_core_init_disconnected <-s3c_hsotg_irq
<idle>-0 [000] d.h. 144.343154: s3c_hsotg_corereset
<-s3c_hsotg_core_init_disconnected
<idle>-0 [000] d.h. 144.343173: s3c_hsotg_init_fifo
<-s3c_hsotg_core_init_disconnected
<idle>-0 [000] d.h. 144.343198: s3c_hsotg_en_gsint
<-s3c_hsotg_core_init_disconnected
<idle>-0 [000] d.h. 144.343209: s3c_hsotg_en_gsint
<-s3c_hsotg_core_init_disconnected
<idle>-0 [000] d.h. 144.343220: s3c_hsotg_ctrl_epint
<-s3c_hsotg_core_init_disconnected
<idle>-0 [000] d.h. 144.343221: s3c_hsotg_ctrl_epint
<-s3c_hsotg_core_init_disconnected
<idle>-0 [000] d.h. 144.343245: s3c_hsotg_ep0_mps
<-s3c_hsotg_core_init_disconnected
<idle>-0 [000] d.h. 144.343246: s3c_hsotg_ep0_mps
<-s3c_hsotg_core_init_disconnected
<idle>-0 [000] d.h. 144.343248: s3c_hsotg_enqueue_setup
<-s3c_hsotg_core_init_disconnected
<idle>-0 [000] d.h. 144.343259:
s3c_hsotg_ep_queue.isra.7 <-s3c_hsotg_enqueue_setup
<idle>-0 [000] d.h. 144.343273: s3c_hsotg_start_req
<-s3c_hsotg_ep_queue.isra.7
<idle>-0 [000] d.h. 144.343333: s3c_hsotg_ctrl_epint
<-s3c_hsotg_start_req
klogd-642 [000] d.h. 144.346846: s3c_hsotg_irq
<-handle_irq_event_percpu
klogd-642 [000] d.h. 144.346884: s3c_hsotg_disconnect
<-s3c_hsotg_irq
<idle>-0 [000] d.h. 144.353574: s3c_hsotg_irq
<-handle_irq_event_percpu
<idle>-0 [000] d.h. 144.358811:
s3c_hsotg_set_ep_maxpacket <-s3c_hsotg_irq
<idle>-0 [000] d.h. 144.358813: s3c_hsotg_ep0_mps
<-s3c_hsotg_set_ep_maxpacket
<idle>-0 [000] d.h. 144.358815:
s3c_hsotg_set_ep_maxpacket <-s3c_hsotg_irq
<idle>-0 [000] d.h. 144.358816: s3c_hsotg_ep0_mps
<-s3c_hsotg_set_ep_maxpacket
<idle>-0 [000] d.h. 144.358817:
s3c_hsotg_set_ep_maxpacket <-s3c_hsotg_irq
<idle>-0 [000] d.h. 144.358819:
s3c_hsotg_set_ep_maxpacket <-s3c_hsotg_irq
<idle>-0 [000] d.h. 144.358821:
s3c_hsotg_set_ep_maxpacket <-s3c_hsotg_irq
<idle>-0 [000] d.h. 144.358822:
s3c_hsotg_set_ep_maxpacket <-s3c_hsotg_irq
<idle>-0 [000] d.h. 144.358824:
s3c_hsotg_set_ep_maxpacket <-s3c_hsotg_irq
<idle>-0 [000] d.h. 144.358825:
s3c_hsotg_set_ep_maxpacket <-s3c_hsotg_irq
<idle>-0 [000] d.h. 144.358826:
s3c_hsotg_set_ep_maxpacket <-s3c_hsotg_irq
<idle>-0 [000] d.h. 144.358828:
s3c_hsotg_set_ep_maxpacket <-s3c_hsotg_irq
<idle>-0 [000] d.h. 144.358829:
s3c_hsotg_set_ep_maxpacket <-s3c_hsotg_irq
<idle>-0 [000] d.h. 144.358831:
s3c_hsotg_set_ep_maxpacket <-s3c_hsotg_irq
<idle>-0 [000] d.h. 144.358832:
s3c_hsotg_set_ep_maxpacket <-s3c_hsotg_irq
<idle>-0 [000] d.h. 144.358834:
s3c_hsotg_set_ep_maxpacket <-s3c_hsotg_irq
<idle>-0 [000] d.h. 144.358835:
s3c_hsotg_set_ep_maxpacket <-s3c_hsotg_irq
<idle>-0 [000] d.h. 144.358837:
s3c_hsotg_set_ep_maxpacket <-s3c_hsotg_irq
<idle>-0 [000] d.h. 144.358838:
s3c_hsotg_set_ep_maxpacket <-s3c_hsotg_irq
<idle>-0 [000] d.h. 144.358839:
s3c_hsotg_set_ep_maxpacket <-s3c_hsotg_irq
<idle>-0 [000] d.h. 144.358841:
s3c_hsotg_set_ep_maxpacket <-s3c_hsotg_irq
<idle>-0 [000] d.h. 144.358842:
s3c_hsotg_set_ep_maxpacket <-s3c_hsotg_irq
<idle>-0 [000] d.h. 144.358844:
s3c_hsotg_set_ep_maxpacket <-s3c_hsotg_irq
<idle>-0 [000] d.h. 144.358845:
s3c_hsotg_set_ep_maxpacket <-s3c_hsotg_irq
<idle>-0 [000] d.h. 144.358847:
s3c_hsotg_set_ep_maxpacket <-s3c_hsotg_irq
<idle>-0 [000] d.h. 144.358848:
s3c_hsotg_set_ep_maxpacket <-s3c_hsotg_irq
<idle>-0 [000] d.h. 144.358849:
s3c_hsotg_set_ep_maxpacket <-s3c_hsotg_irq
<idle>-0 [000] d.h. 144.358851:
s3c_hsotg_set_ep_maxpacket <-s3c_hsotg_irq
<idle>-0 [000] d.h. 144.358852:
s3c_hsotg_set_ep_maxpacket <-s3c_hsotg_irq
<idle>-0 [000] d.h. 144.358854:
s3c_hsotg_set_ep_maxpacket <-s3c_hsotg_irq
<idle>-0 [000] d.h. 144.358855:
s3c_hsotg_set_ep_maxpacket <-s3c_hsotg_irq
<idle>-0 [000] d.h. 144.358857:
s3c_hsotg_set_ep_maxpacket <-s3c_hsotg_irq
<idle>-0 [000] d.h. 144.358858:
s3c_hsotg_set_ep_maxpacket <-s3c_hsotg_irq
<idle>-0 [000] d.h. 144.358859:
s3c_hsotg_set_ep_maxpacket <-s3c_hsotg_irq
<idle>-0 [000] d.h. 144.358861: s3c_hsotg_enqueue_setup
<-s3c_hsotg_irq
<idle>-0 [000] d.h. 144.361190: s3c_hsotg_irq
<-handle_irq_event_percpu
<idle>-0 [000] d.h. 144.364228: s3c_hsotg_irq
<-handle_irq_event_percpu
<idle>-0 [000] d.h. 144.517305: s3c_hsotg_irq
<-handle_irq_event_percpu
<idle>-0 [000] d.h. 144.517344: s3c_hsotg_disconnect
<-s3c_hsotg_irq
<idle>-0 [000] d.h. 144.527580: s3c_hsotg_irq
<-handle_irq_event_percpu
<idle>-0 [000] d.h. 144.532813:
s3c_hsotg_set_ep_maxpacket <-s3c_hsotg_irq
<idle>-0 [000] d.h. 144.532815: s3c_hsotg_ep0_mps
<-s3c_hsotg_set_ep_maxpacket
<idle>-0 [000] d.h. 144.532816:
s3c_hsotg_set_ep_maxpacket <-s3c_hsotg_irq
<idle>-0 [000] d.h. 144.532817: s3c_hsotg_ep0_mps
<-s3c_hsotg_set_ep_maxpacket
<idle>-0 [000] d.h. 144.532819:
s3c_hsotg_set_ep_maxpacket <-s3c_hsotg_irq
<idle>-0 [000] d.h. 144.532820:
s3c_hsotg_set_ep_maxpacket <-s3c_hsotg_irq
<idle>-0 [000] d.h. 144.532822:
s3c_hsotg_set_ep_maxpacket <-s3c_hsotg_irq
<idle>-0 [000] d.h. 144.532823:
s3c_hsotg_set_ep_maxpacket <-s3c_hsotg_irq
<idle>-0 [000] d.h. 144.532825:
s3c_hsotg_set_ep_maxpacket <-s3c_hsotg_irq
<idle>-0 [000] d.h. 144.532826:
s3c_hsotg_set_ep_maxpacket <-s3c_hsotg_irq
<idle>-0 [000] d.h. 144.532828:
s3c_hsotg_set_ep_maxpacket <-s3c_hsotg_irq
<idle>-0 [000] d.h. 144.532829:
s3c_hsotg_set_ep_maxpacket <-s3c_hsotg_irq
<idle>-0 [000] d.h. 144.532831:
s3c_hsotg_set_ep_maxpacket <-s3c_hsotg_irq
<idle>-0 [000] d.h. 144.532832:
s3c_hsotg_set_ep_maxpacket <-s3c_hsotg_irq
<idle>-0 [000] d.h. 144.532834:
s3c_hsotg_set_ep_maxpacket <-s3c_hsotg_irq
<idle>-0 [000] d.h. 144.532835:
s3c_hsotg_set_ep_maxpacket <-s3c_hsotg_irq
<idle>-0 [000] d.h. 144.532837:
s3c_hsotg_set_ep_maxpacket <-s3c_hsotg_irq
<idle>-0 [000] d.h. 144.532838:
s3c_hsotg_set_ep_maxpacket <-s3c_hsotg_irq
<idle>-0 [000] d.h. 144.532839:
s3c_hsotg_set_ep_maxpacket <-s3c_hsotg_irq
<idle>-0 [000] d.h. 144.532841:
s3c_hsotg_set_ep_maxpacket <-s3c_hsotg_irq
<idle>-0 [000] d.h. 144.532842:
s3c_hsotg_set_ep_maxpacket <-s3c_hsotg_irq
<idle>-0 [000] d.h. 144.532844:
s3c_hsotg_set_ep_maxpacket <-s3c_hsotg_irq
<idle>-0 [000] d.h. 144.532845:
s3c_hsotg_set_ep_maxpacket <-s3c_hsotg_irq
<idle>-0 [000] d.h. 144.532847:
s3c_hsotg_set_ep_maxpacket <-s3c_hsotg_irq
<idle>-0 [000] d.h. 144.532848:
s3c_hsotg_set_ep_maxpacket <-s3c_hsotg_irq
<idle>-0 [000] d.h. 144.532849:
s3c_hsotg_set_ep_maxpacket <-s3c_hsotg_irq
<idle>-0 [000] d.h. 144.532851:
s3c_hsotg_set_ep_maxpacket <-s3c_hsotg_irq
<idle>-0 [000] d.h. 144.532852:
s3c_hsotg_set_ep_maxpacket <-s3c_hsotg_irq
<idle>-0 [000] d.h. 144.532854:
s3c_hsotg_set_ep_maxpacket <-s3c_hsotg_irq
<idle>-0 [000] d.h. 144.532855:
s3c_hsotg_set_ep_maxpacket <-s3c_hsotg_irq
<idle>-0 [000] d.h. 144.532857:
s3c_hsotg_set_ep_maxpacket <-s3c_hsotg_irq
<idle>-0 [000] d.h. 144.532858:
s3c_hsotg_set_ep_maxpacket <-s3c_hsotg_irq
<idle>-0 [000] d.h. 144.532859:
s3c_hsotg_set_ep_maxpacket <-s3c_hsotg_irq
<idle>-0 [000] d.h. 144.532861:
s3c_hsotg_set_ep_maxpacket <-s3c_hsotg_irq
<idle>-0 [000] d.h. 144.532862: s3c_hsotg_enqueue_setup
<-s3c_hsotg_irq
<idle>-0 [000] d.h. 144.602783: s3c_hsotg_irq
<-handle_irq_event_percpu
<idle>-0 [000] d.h. 144.602824: s3c_hsotg_rx_data
<-s3c_hsotg_irq
<idle>-0 [000] d.h. 144.603092: s3c_hsotg_irq
<-handle_irq_event_percpu
<idle>-0 [000] d.h. 144.603146: s3c_hsotg_epint
<-s3c_hsotg_irq
<idle>-0 [000] d.h. 149.595739: s3c_hsotg_irq
<-handle_irq_event_percpu
<idle>-0 [000] d.h. 149.595787: s3c_hsotg_rx_data
<-s3c_hsotg_irq
<idle>-0 [000] d.h. 149.800683: s3c_hsotg_epint
<-s3c_hsotg_irq
<idle>-0 [000] d.h. 154.429454: s3c_hsotg_irq
<-handle_irq_event_percpu
<idle>-0 [000] d.h. 154.432493: s3c_hsotg_irq
<-handle_irq_event_percpu
<idle>-0 [000] d.h. 154.743081: s3c_hsotg_disconnect
<-dwc2_handle_common_intr
<idle>-0 [000] d.h. 154.743085: s3c_hsotg_irq
<-handle_irq_event_percpu
root@socfpga_cyclone5:~#
root@socfpga_cyclone5:~# insmod g_mass_storage.ko file=/dev/mmcblk0p1
[ 144.084933] Number of LUNs=8
[ 144.087817] Mass Storage Function, version: 2009/09/11
[ 144.092936] LUN: removable file: (no medium)
[ 144.097228] Number of LUNs=1
[ 144.100217] LUN: file: /dev/mmcblk0p1
[ 144.103867] Number of LUNs=1
[ 144.106941] g_mass_storage gadget: Mass Storage Gadget, version: 2009/09/11
[ 144.113874] g_mass_storage gadget: userspace failed to provide iSerialNumber
[ 144.120922] g_mass_storage gadget: g_mass_storage ready
[ 144.129387] dwc2 ffb40000.usb: bound driver g_mass_storage
root@socfpga_cyclone5:~#
root@socfpga_cyclone5:~# [ 144.353610] dwc2 ffb40000.usb: new device is high-speed
[ 144.527612] dwc2 ffb40000.usb: new device is high-speed
[ 149.595802] ------------[ cut here ]------------
[ 149.600420] WARNING: CPU: 0 PID: 0 at drivers/usb/dwc2/gadget.c:1352 s3c_hsotg_rx_data+0xcc/0x144()
[ 149.609423] Modules linked in: g_mass_storage usb_f_mass_storage libcomposite
[ 149.616582] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 3.19.0-rc1-00090-g4864f14 #14
[ 149.624202] Hardware name: Altera SOCFPGA
[ 149.628222] [<c00165e4>] (unwind_backtrace) from [<c00124f0>] (show_stack+0x20/0x24)
[ 149.635941] [<c00124f0>] (show_stack) from [<c04c7374>] (dump_stack+0x7c/0x98)
[ 149.643147] [<c04c7374>] (dump_stack) from [<c0023ec4>] (warn_slowpath_common+0x88/0xc4)
[ 149.651208] [<c0023ec4>] (warn_slowpath_common) from [<c0023f2c>] (warn_slowpath_null+0x2c/0x34)
[ 149.659961] [<c0023f2c>] (warn_slowpath_null) from [<c034ccc4>] (s3c_hsotg_rx_data+0xcc/0x144)
[ 149.668542] [<c034ccc4>] (s3c_hsotg_rx_data) from [<c034f884>] (s3c_hsotg_irq+0x3e0/0x708)
[ 149.676777] [<c034f884>] (s3c_hsotg_irq) from [<c0060d30>] (handle_irq_event_percpu+0x68/0x204)
[ 149.685442] [<c0060d30>] (handle_irq_event_percpu) from [<c0060f20>] (handle_irq_event+0x54/0x74)
[ 149.694280] [<c0060f20>] (handle_irq_event) from [<c0063e2c>] (handle_fasteoi_irq+0xb8/0x190)
[ 149.702771] [<c0063e2c>] (handle_fasteoi_irq) from [<c0060548>] (generic_handle_irq+0x30/0x40)
[ 149.711348] [<c0060548>] (generic_handle_irq) from [<c0060694>] (__handle_domain_irq+0x64/0xc4)
[ 149.720012] [<c0060694>] (__handle_domain_irq) from [<c00086bc>] (gic_handle_irq+0x30/0x6c)
[ 149.728333] [<c00086bc>] (gic_handle_irq) from [<c00130c0>] (__irq_svc+0x40/0x54)
[ 149.735781] Exception stack(0xc06fbf38 to 0xc06fbf80)
[ 149.740811] bf20: 00000000 00000000
[ 149.748953] bf40: c06fbf90 c001f600 c0702c60 c0733560 c0702498 c04cf08c c0732d73 413fc090
[ 149.757096] bf60: c0733560 c06fbf8c c06fbf90 c06fbf80 c000f934 c000f938 60000013 ffffffff
[ 149.765243] [<c00130c0>] (__irq_svc) from [<c000f938>] (arch_cpu_idle+0x40/0x4c)
[ 149.772616] [<c000f938>] (arch_cpu_idle) from [<c0057670>] (cpu_startup_entry+0x144/0x22c)
[ 149.780857] [<c0057670>] (cpu_startup_entry) from [<c04c2bc4>] (rest_init+0x70/0x88)
[ 149.788581] [<c04c2bc4>] (rest_init) from [<c069bc60>] (start_kernel+0x310/0x368)
[ 149.796030] ---[ end trace 05bdb288fcc8864d ]---
[ 155.793924] random: nonblocking pool is initialized
cat /sys/kernel/debug/tracing/r trace
# tracer: function
#
# entries-in-buffer/entries-written: 130/130 #P:2
#
# _-----=> irqs-off
# / _----=> need-resched
# | / _---=> hardirq/softirq
# || / _--=> preempt-depth
# ||| / delay
# TASK-PID CPU# |||| TIMESTAMP FUNCTION
# | | | |||| | |
<idle>-0 [000] d.h. 50.383808: s3c_hsotg_irq <-handle_irq_event_percpu
<idle>-0 [000] d.h. 74.367931: s3c_hsotg_irq <-handle_irq_event_percpu
<idle>-0 [000] d.h. 74.921390: s3c_hsotg_irq <-handle_irq_event_percpu
insmod-656 [001] .n.. 144.084905: s3c_hsotg_ep_alloc_request <-composite_dev_prepare
insmod-656 [001] .n.. 144.126144: s3c_hsotg_udc_start <-udc_bind_to_driver
insmod-656 [001] .n.. 144.126153: s3c_hsotg_phy_enable <-s3c_hsotg_udc_start
insmod-656 [001] dn.. 144.126172: s3c_hsotg_init <-s3c_hsotg_udc_start
insmod-656 [001] dn.. 144.126187: s3c_hsotg_init_fifo <-s3c_hsotg_init
insmod-656 [001] dn.. 144.126201: s3c_hsotg_core_init_disconnected <-s3c_hsotg_udc_start
insmod-656 [001] dn.. 144.126203: s3c_hsotg_corereset <-s3c_hsotg_core_init_disconnected
insmod-656 [001] dn.. 144.126223: s3c_hsotg_init_fifo <-s3c_hsotg_core_init_disconnected
insmod-656 [001] dn.. 144.126248: s3c_hsotg_en_gsint <-s3c_hsotg_core_init_disconnected
insmod-656 [001] dn.. 144.126259: s3c_hsotg_en_gsint <-s3c_hsotg_core_init_disconnected
insmod-656 [001] dn.. 144.126269: s3c_hsotg_ctrl_epint <-s3c_hsotg_core_init_disconnected
insmod-656 [001] dn.. 144.126271: s3c_hsotg_ctrl_epint <-s3c_hsotg_core_init_disconnected
insmod-656 [001] dn.. 144.126293: s3c_hsotg_ep0_mps <-s3c_hsotg_core_init_disconnected
insmod-656 [001] dn.. 144.126295: s3c_hsotg_ep0_mps <-s3c_hsotg_core_init_disconnected
insmod-656 [001] dn.. 144.126297: s3c_hsotg_enqueue_setup <-s3c_hsotg_core_init_disconnected
insmod-656 [001] dn.. 144.126308: s3c_hsotg_ep_queue.isra.7 <-s3c_hsotg_enqueue_setup
insmod-656 [001] dn.. 144.126323: s3c_hsotg_start_req <-s3c_hsotg_ep_queue.isra.7
insmod-656 [001] dn.. 144.126382: s3c_hsotg_ctrl_epint <-s3c_hsotg_start_req
insmod-656 [001] .n.. 144.134867: s3c_hsotg_pullup <-udc_bind_to_driver
sh-650 [000] d.h. 144.137903: s3c_hsotg_irq <-handle_irq_event_percpu
<idle>-0 [000] d.h. 144.140945: s3c_hsotg_irq <-handle_irq_event_percpu
<idle>-0 [000] d.h. 144.343073: s3c_hsotg_irq <-handle_irq_event_percpu
<idle>-0 [000] d.h. 144.343122: s3c_hsotg_disconnect <-s3c_hsotg_irq
<idle>-0 [000] d.h. 144.343124: s3c_hsotg_complete_request <-kill_all_requests
<idle>-0 [000] d.h. 144.343139: s3c_hsotg_complete_setup <-usb_gadget_giveback_request
<idle>-0 [000] d.h. 144.343152: s3c_hsotg_core_init_disconnected <-s3c_hsotg_irq
<idle>-0 [000] d.h. 144.343154: s3c_hsotg_corereset <-s3c_hsotg_core_init_disconnected
<idle>-0 [000] d.h. 144.343173: s3c_hsotg_init_fifo <-s3c_hsotg_core_init_disconnected
<idle>-0 [000] d.h. 144.343198: s3c_hsotg_en_gsint <-s3c_hsotg_core_init_disconnected
<idle>-0 [000] d.h. 144.343209: s3c_hsotg_en_gsint <-s3c_hsotg_core_init_disconnected
<idle>-0 [000] d.h. 144.343220: s3c_hsotg_ctrl_epint <-s3c_hsotg_core_init_disconnected
<idle>-0 [000] d.h. 144.343221: s3c_hsotg_ctrl_epint <-s3c_hsotg_core_init_disconnected
<idle>-0 [000] d.h. 144.343245: s3c_hsotg_ep0_mps <-s3c_hsotg_core_init_disconnected
<idle>-0 [000] d.h. 144.343246: s3c_hsotg_ep0_mps <-s3c_hsotg_core_init_disconnected
<idle>-0 [000] d.h. 144.343248: s3c_hsotg_enqueue_setup <-s3c_hsotg_core_init_disconnected
<idle>-0 [000] d.h. 144.343259: s3c_hsotg_ep_queue.isra.7 <-s3c_hsotg_enqueue_setup
<idle>-0 [000] d.h. 144.343273: s3c_hsotg_start_req <-s3c_hsotg_ep_queue.isra.7
<idle>-0 [000] d.h. 144.343333: s3c_hsotg_ctrl_epint <-s3c_hsotg_start_req
klogd-642 [000] d.h. 144.346846: s3c_hsotg_irq <-handle_irq_event_percpu
klogd-642 [000] d.h. 144.346884: s3c_hsotg_disconnect <-s3c_hsotg_irq
<idle>-0 [000] d.h. 144.353574: s3c_hsotg_irq <-handle_irq_event_percpu
<idle>-0 [000] d.h. 144.358811: s3c_hsotg_set_ep_maxpacket <-s3c_hsotg_irq
<idle>-0 [000] d.h. 144.358813: s3c_hsotg_ep0_mps <-s3c_hsotg_set_ep_maxpacket
<idle>-0 [000] d.h. 144.358815: s3c_hsotg_set_ep_maxpacket <-s3c_hsotg_irq
<idle>-0 [000] d.h. 144.358816: s3c_hsotg_ep0_mps <-s3c_hsotg_set_ep_maxpacket
<idle>-0 [000] d.h. 144.358817: s3c_hsotg_set_ep_maxpacket <-s3c_hsotg_irq
<idle>-0 [000] d.h. 144.358819: s3c_hsotg_set_ep_maxpacket <-s3c_hsotg_irq
<idle>-0 [000] d.h. 144.358821: s3c_hsotg_set_ep_maxpacket <-s3c_hsotg_irq
<idle>-0 [000] d.h. 144.358822: s3c_hsotg_set_ep_maxpacket <-s3c_hsotg_irq
<idle>-0 [000] d.h. 144.358824: s3c_hsotg_set_ep_maxpacket <-s3c_hsotg_irq
<idle>-0 [000] d.h. 144.358825: s3c_hsotg_set_ep_maxpacket <-s3c_hsotg_irq
<idle>-0 [000] d.h. 144.358826: s3c_hsotg_set_ep_maxpacket <-s3c_hsotg_irq
<idle>-0 [000] d.h. 144.358828: s3c_hsotg_set_ep_maxpacket <-s3c_hsotg_irq
<idle>-0 [000] d.h. 144.358829: s3c_hsotg_set_ep_maxpacket <-s3c_hsotg_irq
<idle>-0 [000] d.h. 144.358831: s3c_hsotg_set_ep_maxpacket <-s3c_hsotg_irq
<idle>-0 [000] d.h. 144.358832: s3c_hsotg_set_ep_maxpacket <-s3c_hsotg_irq
<idle>-0 [000] d.h. 144.358834: s3c_hsotg_set_ep_maxpacket <-s3c_hsotg_irq
<idle>-0 [000] d.h. 144.358835: s3c_hsotg_set_ep_maxpacket <-s3c_hsotg_irq
<idle>-0 [000] d.h. 144.358837: s3c_hsotg_set_ep_maxpacket <-s3c_hsotg_irq
<idle>-0 [000] d.h. 144.358838: s3c_hsotg_set_ep_maxpacket <-s3c_hsotg_irq
<idle>-0 [000] d.h. 144.358839: s3c_hsotg_set_ep_maxpacket <-s3c_hsotg_irq
<idle>-0 [000] d.h. 144.358841: s3c_hsotg_set_ep_maxpacket <-s3c_hsotg_irq
<idle>-0 [000] d.h. 144.358842: s3c_hsotg_set_ep_maxpacket <-s3c_hsotg_irq
<idle>-0 [000] d.h. 144.358844: s3c_hsotg_set_ep_maxpacket <-s3c_hsotg_irq
<idle>-0 [000] d.h. 144.358845: s3c_hsotg_set_ep_maxpacket <-s3c_hsotg_irq
<idle>-0 [000] d.h. 144.358847: s3c_hsotg_set_ep_maxpacket <-s3c_hsotg_irq
<idle>-0 [000] d.h. 144.358848: s3c_hsotg_set_ep_maxpacket <-s3c_hsotg_irq
<idle>-0 [000] d.h. 144.358849: s3c_hsotg_set_ep_maxpacket <-s3c_hsotg_irq
<idle>-0 [000] d.h. 144.358851: s3c_hsotg_set_ep_maxpacket <-s3c_hsotg_irq
<idle>-0 [000] d.h. 144.358852: s3c_hsotg_set_ep_maxpacket <-s3c_hsotg_irq
<idle>-0 [000] d.h. 144.358854: s3c_hsotg_set_ep_maxpacket <-s3c_hsotg_irq
<idle>-0 [000] d.h. 144.358855: s3c_hsotg_set_ep_maxpacket <-s3c_hsotg_irq
<idle>-0 [000] d.h. 144.358857: s3c_hsotg_set_ep_maxpacket <-s3c_hsotg_irq
<idle>-0 [000] d.h. 144.358858: s3c_hsotg_set_ep_maxpacket <-s3c_hsotg_irq
<idle>-0 [000] d.h. 144.358859: s3c_hsotg_set_ep_maxpacket <-s3c_hsotg_irq
<idle>-0 [000] d.h. 144.358861: s3c_hsotg_enqueue_setup <-s3c_hsotg_irq
<idle>-0 [000] d.h. 144.361190: s3c_hsotg_irq <-handle_irq_event_percpu
<idle>-0 [000] d.h. 144.364228: s3c_hsotg_irq <-handle_irq_event_percpu
<idle>-0 [000] d.h. 144.517305: s3c_hsotg_irq <-handle_irq_event_percpu
<idle>-0 [000] d.h. 144.517344: s3c_hsotg_disconnect <-s3c_hsotg_irq
<idle>-0 [000] d.h. 144.527580: s3c_hsotg_irq <-handle_irq_event_percpu
<idle>-0 [000] d.h. 144.532813: s3c_hsotg_set_ep_maxpacket <-s3c_hsotg_irq
<idle>-0 [000] d.h. 144.532815: s3c_hsotg_ep0_mps <-s3c_hsotg_set_ep_maxpacket
<idle>-0 [000] d.h. 144.532816: s3c_hsotg_set_ep_maxpacket <-s3c_hsotg_irq
<idle>-0 [000] d.h. 144.532817: s3c_hsotg_ep0_mps <-s3c_hsotg_set_ep_maxpacket
<idle>-0 [000] d.h. 144.532819: s3c_hsotg_set_ep_maxpacket <-s3c_hsotg_irq
<idle>-0 [000] d.h. 144.532820: s3c_hsotg_set_ep_maxpacket <-s3c_hsotg_irq
<idle>-0 [000] d.h. 144.532822: s3c_hsotg_set_ep_maxpacket <-s3c_hsotg_irq
<idle>-0 [000] d.h. 144.532823: s3c_hsotg_set_ep_maxpacket <-s3c_hsotg_irq
<idle>-0 [000] d.h. 144.532825: s3c_hsotg_set_ep_maxpacket <-s3c_hsotg_irq
<idle>-0 [000] d.h. 144.532826: s3c_hsotg_set_ep_maxpacket <-s3c_hsotg_irq
<idle>-0 [000] d.h. 144.532828: s3c_hsotg_set_ep_maxpacket <-s3c_hsotg_irq
<idle>-0 [000] d.h. 144.532829: s3c_hsotg_set_ep_maxpacket <-s3c_hsotg_irq
<idle>-0 [000] d.h. 144.532831: s3c_hsotg_set_ep_maxpacket <-s3c_hsotg_irq
<idle>-0 [000] d.h. 144.532832: s3c_hsotg_set_ep_maxpacket <-s3c_hsotg_irq
<idle>-0 [000] d.h. 144.532834: s3c_hsotg_set_ep_maxpacket <-s3c_hsotg_irq
<idle>-0 [000] d.h. 144.532835: s3c_hsotg_set_ep_maxpacket <-s3c_hsotg_irq
<idle>-0 [000] d.h. 144.532837: s3c_hsotg_set_ep_maxpacket <-s3c_hsotg_irq
<idle>-0 [000] d.h. 144.532838: s3c_hsotg_set_ep_maxpacket <-s3c_hsotg_irq
<idle>-0 [000] d.h. 144.532839: s3c_hsotg_set_ep_maxpacket <-s3c_hsotg_irq
<idle>-0 [000] d.h. 144.532841: s3c_hsotg_set_ep_maxpacket <-s3c_hsotg_irq
<idle>-0 [000] d.h. 144.532842: s3c_hsotg_set_ep_maxpacket <-s3c_hsotg_irq
<idle>-0 [000] d.h. 144.532844: s3c_hsotg_set_ep_maxpacket <-s3c_hsotg_irq
<idle>-0 [000] d.h. 144.532845: s3c_hsotg_set_ep_maxpacket <-s3c_hsotg_irq
<idle>-0 [000] d.h. 144.532847: s3c_hsotg_set_ep_maxpacket <-s3c_hsotg_irq
<idle>-0 [000] d.h. 144.532848: s3c_hsotg_set_ep_maxpacket <-s3c_hsotg_irq
<idle>-0 [000] d.h. 144.532849: s3c_hsotg_set_ep_maxpacket <-s3c_hsotg_irq
<idle>-0 [000] d.h. 144.532851: s3c_hsotg_set_ep_maxpacket <-s3c_hsotg_irq
<idle>-0 [000] d.h. 144.532852: s3c_hsotg_set_ep_maxpacket <-s3c_hsotg_irq
<idle>-0 [000] d.h. 144.532854: s3c_hsotg_set_ep_maxpacket <-s3c_hsotg_irq
<idle>-0 [000] d.h. 144.532855: s3c_hsotg_set_ep_maxpacket <-s3c_hsotg_irq
<idle>-0 [000] d.h. 144.532857: s3c_hsotg_set_ep_maxpacket <-s3c_hsotg_irq
<idle>-0 [000] d.h. 144.532858: s3c_hsotg_set_ep_maxpacket <-s3c_hsotg_irq
<idle>-0 [000] d.h. 144.532859: s3c_hsotg_set_ep_maxpacket <-s3c_hsotg_irq
<idle>-0 [000] d.h. 144.532861: s3c_hsotg_set_ep_maxpacket <-s3c_hsotg_irq
<idle>-0 [000] d.h. 144.532862: s3c_hsotg_enqueue_setup <-s3c_hsotg_irq
<idle>-0 [000] d.h. 144.602783: s3c_hsotg_irq <-handle_irq_event_percpu
<idle>-0 [000] d.h. 144.602824: s3c_hsotg_rx_data <-s3c_hsotg_irq
<idle>-0 [000] d.h. 144.603092: s3c_hsotg_irq <-handle_irq_event_percpu
<idle>-0 [000] d.h. 144.603146: s3c_hsotg_epint <-s3c_hsotg_irq
<idle>-0 [000] d.h. 149.595739: s3c_hsotg_irq <-handle_irq_event_percpu
<idle>-0 [000] d.h. 149.595787: s3c_hsotg_rx_data <-s3c_hsotg_irq
<idle>-0 [000] d.h. 149.800683: s3c_hsotg_epint <-s3c_hsotg_irq
<idle>-0 [000] d.h. 154.429454: s3c_hsotg_irq <-handle_irq_event_percpu
<idle>-0 [000] d.h. 154.432493: s3c_hsotg_irq <-handle_irq_event_percpu
<idle>-0 [000] d.h. 154.743081: s3c_hsotg_disconnect <-dwc2_handle_common_intr
<idle>-0 [000] d.h. 154.743085: s3c_hsotg_irq <-handle_irq_event_percpu
root@socfpga_cyclone5:~#
