root@beagleboard:~# modprobe omap2430
[  114.643920] drivers/usb/musb/omap2430.c:584 (omap2430) omap2430_init
[  114.650939] drivers/usb/musb/omap2430.c:445 (omap2430) omap2430_probe
root@beagleboard:~# [  114.792205] drivers/usb/musb/musb_core.c:2409 (musb_hdrc) musb_init
[  114.798889] musb-hdrc: version 6.0, ?dma?, otg (peripheral+host)
[  114.805358] drivers/usb/musb/musb_core.c:2118 (musb_hdrc) musb_probe
[  114.812225] drivers/usb/musb/musb_core.c:1888 (musb_hdrc) musb_init_controller
[  114.819824] drivers/usb/musb/musb_core.c:1813 (musb_hdrc) allocate_instance
[  114.835723] twl4030_usb twl4030_usb: twl4030_phy_resume
[  114.841339] drivers/usb/musb/musbhsdma.c:391 (musb_hdrc) dma_controller_create
[  114.848999] drivers/usb/musb/musb_core.c:1388 (musb_hdrc) musb_core_init
[  114.856079] musb-hdrc: ConfigData=0xde (UTMI-8, dyn FIFOs, bulk combine, bulk split, HB-ISO Rx, HB-ISO Tx, SoftConn)
[  114.867095] musb-hdrc: MHDRC RTL version 1.800
[  114.871887] drivers/usb/musb/musb_core.c:1246 (musb_hdrc) ep_config_from_table
[  114.879486] musb-hdrc: setup fifo_mode 4
[  114.883666] drivers/usb/musb/musb_core.c:1173 (musb_hdrc) fifo_setup
[  114.890319] drivers/usb/musb/musb_core.c:1173 (musb_hdrc) fifo_setup
[  114.897033] drivers/usb/musb/musb_core.c:1173 (musb_hdrc) fifo_setup
[  114.903686] drivers/usb/musb/musb_core.c:1173 (musb_hdrc) fifo_setup
[  114.910369] drivers/usb/musb/musb_core.c:1173 (musb_hdrc) fifo_setup
[  114.917083] drivers/usb/musb/musb_core.c:1173 (musb_hdrc) fifo_setup
[  114.923767] drivers/usb/musb/musb_core.c:1173 (musb_hdrc) fifo_setup
[  114.930480] drivers/usb/musb/musb_core.c:1173 (musb_hdrc) fifo_setup
[  114.937133] drivers/usb/musb/musb_core.c:1173 (musb_hdrc) fifo_setup
[  114.943817] drivers/usb/musb/musb_core.c:1173 (musb_hdrc) fifo_setup
[  114.950500] drivers/usb/musb/musb_core.c:1173 (musb_hdrc) fifo_setup
[  114.957183] drivers/usb/musb/musb_core.c:1173 (musb_hdrc) fifo_setup
[  114.963867] drivers/usb/musb/musb_core.c:1173 (musb_hdrc) fifo_setup
[  114.970550] drivers/usb/musb/musb_core.c:1173 (musb_hdrc) fifo_setup
[  114.977264] drivers/usb/musb/musb_core.c:1173 (musb_hdrc) fifo_setup
[  114.983947] drivers/usb/musb/musb_core.c:1173 (musb_hdrc) fifo_setup
[  114.990631] drivers/usb/musb/musb_core.c:1173 (musb_hdrc) fifo_setup
[  114.997314] drivers/usb/musb/musb_core.c:1173 (musb_hdrc) fifo_setup
[  115.003997] drivers/usb/musb/musb_core.c:1173 (musb_hdrc) fifo_setup
[  115.010711] drivers/usb/musb/musb_core.c:1173 (musb_hdrc) fifo_setup
[  115.017395] drivers/usb/musb/musb_core.c:1173 (musb_hdrc) fifo_setup
[  115.024078] drivers/usb/musb/musb_core.c:1173 (musb_hdrc) fifo_setup
[  115.030761] drivers/usb/musb/musb_core.c:1173 (musb_hdrc) fifo_setup
[  115.037475] drivers/usb/musb/musb_core.c:1173 (musb_hdrc) fifo_setup
[  115.044158] drivers/usb/musb/musb_core.c:1173 (musb_hdrc) fifo_setup
[  115.050842] drivers/usb/musb/musb_core.c:1173 (musb_hdrc) fifo_setup
[  115.057556] drivers/usb/musb/musb_core.c:1173 (musb_hdrc) fifo_setup
[  115.064239] drivers/usb/musb/musb_core.c:1173 (musb_hdrc) fifo_setup
[  115.070922] musb-hdrc: 28/31 max ep, 16384/16384 memory
[  115.076599] drivers/usb/musb/musb_gadget.c:1879 (musb_hdrc) musb_gadget_setup
[  115.084136] drivers/usb/musb/musb_gadget.c:1842 (musb_hdrc) musb_g_init_endpoints
[  115.092010] drivers/usb/musb/musb_gadget.c:1803 (musb_hdrc) init_peripheral_ep
[  115.099609] drivers/usb/musb/musb_gadget.c:1803 (musb_hdrc) init_peripheral_ep
[  115.107238] drivers/usb/musb/musb_gadget.c:1803 (musb_hdrc) init_peripheral_ep
[  115.114837] drivers/usb/musb/musb_gadget.c:1803 (musb_hdrc) init_peripheral_ep
[  115.122406] drivers/usb/musb/musb_gadget.c:1803 (musb_hdrc) init_peripheral_ep
[  115.130035] drivers/usb/musb/musb_gadget.c:1803 (musb_hdrc) init_peripheral_ep
[  115.137634] drivers/usb/musb/musb_gadget.c:1803 (musb_hdrc) init_peripheral_ep
[  115.145233] drivers/usb/musb/musb_gadget.c:1803 (musb_hdrc) init_peripheral_ep
[  115.152832] drivers/usb/musb/musb_gadget.c:1803 (musb_hdrc) init_peripheral_ep
[  115.160461] drivers/usb/musb/musb_gadget.c:1803 (musb_hdrc) init_peripheral_ep
[  115.168060] drivers/usb/musb/musb_gadget.c:1803 (musb_hdrc) init_peripheral_ep
[  115.175689] drivers/usb/musb/musb_gadget.c:1803 (musb_hdrc) init_peripheral_ep
[  115.183288] drivers/usb/musb/musb_gadget.c:1803 (musb_hdrc) init_peripheral_ep
[  115.190948] drivers/usb/musb/musb_gadget.c:1803 (musb_hdrc) init_peripheral_ep
[  115.198516] drivers/usb/musb/musb_gadget.c:1803 (musb_hdrc) init_peripheral_ep
[  115.206146] drivers/usb/musb/musb_gadget.c:1803 (musb_hdrc) init_peripheral_ep
[  115.213775] drivers/usb/musb/musb_gadget.c:1803 (musb_hdrc) init_peripheral_ep
[  115.221374] drivers/usb/musb/musb_gadget.c:1803 (musb_hdrc) init_peripheral_ep
[  115.229003] drivers/usb/musb/musb_gadget.c:1803 (musb_hdrc) init_peripheral_ep
[  115.236633] drivers/usb/musb/musb_gadget.c:1803 (musb_hdrc) init_peripheral_ep
[  115.244232] drivers/usb/musb/musb_gadget.c:1803 (musb_hdrc) init_peripheral_ep
[  115.251861] drivers/usb/musb/musb_gadget.c:1803 (musb_hdrc) init_peripheral_ep
[  115.259460] drivers/usb/musb/musb_gadget.c:1803 (musb_hdrc) init_peripheral_ep
[  115.267089] drivers/usb/musb/musb_gadget.c:1803 (musb_hdrc) init_peripheral_ep
[  115.274688] drivers/usb/musb/musb_gadget.c:1803 (musb_hdrc) init_peripheral_ep
[  115.282287] drivers/usb/musb/musb_gadget.c:1803 (musb_hdrc) init_peripheral_ep
[  115.289916] drivers/usb/musb/musb_gadget.c:1803 (musb_hdrc) init_peripheral_ep
[  115.297546] drivers/usb/musb/musb_gadget.c:1803 (musb_hdrc) init_peripheral_ep
[  115.307617] musb-hdrc musb-hdrc: USB OTG mode controller at fa0ab000 using DMA, IRQ 92
[  115.324279] twl4030_usb twl4030_usb: twl4030_phy_suspend

root@beagleboard:~# lsmod
Module                  Size  Used by
musb_hdrc              53393  0
omap2430                5518  0
INIT: Id "S" respawning too fast: disabled for 5 minutes
root@beagleboard:~# modprobe g_mass_storage file=backing_file
[  138.156799] udc musb-hdrc: registering UDC driver [g_mass_storage]
[  138.163330]  gadget: adding config #1 'Linux File-Backed Storage'/bf0217e8
[  138.171966]  lun0: open backing file: backing_file
[  138.182464]  gadget: Mass Storage Function, version: 2009/09/11
[  138.188812]  gadget: Number of LUNs=1
[  138.192901]  lun0: LUN: file: /home/root/backing_file
[  138.198272]  gadget: I/O thread pid: 1976
[  138.202484]  gadget: adding 'Mass Storage Function'/ddda81c0 to config 'Linux File-Backed Storage'/bf0217e8
[  138.212799]  gadget: cfg 1/bf0217e8 speeds: high full
[  138.218109]  gadget:   interface 0 = Mass Storage Function/ddda81c0
[  138.224731]  gadget: Mass Storage Gadget, version: 2009/09/11
[  138.230804]  gadget: userspace failed to provide iSerialNumber
[  138.236968]  gadget: g_mass_storage ready
root@beagleboard:~# [  138.252227] twl4030_usb twl4030_usb: twl4030_phy_resume
[  138.252441] musb-hdrc musb-hdrc: MUSB HDRC host driver
[  138.254364] musb-hdrc musb-hdrc: new USB bus registered, assigned bus number 2
[  138.254821] usb usb2: New USB device found, idVendor=1d6b, idProduct=0002
[  138.254852] usb usb2: New USB device strings: Mfr=3, Product=2, SerialNumber=1
[  138.254852] usb usb2: Product: MUSB HDRC host driver
[  138.254852] usb usb2: Manufacturer: Linux 3.6.0-rc4-01179-g83ccc22-dirty musb-hcd
[  138.254882] usb usb2: SerialNumber: musb-hdrc
[  138.257629] hub 2-0:1.0: USB hub found
[  138.257843] hub 2-0:1.0: 1 port detected
[  138.347778] twl4030_usb twl4030_usb: HW_CONDITIONS 0xc0/192; link 3
[  138.670959] twl4030_usb twl4030_usb: HW_CONDITIONS 0x40/64; link 4
[  138.680175] twl4030_usb twl4030_usb: twl4030_phy_suspend

root@beagleboard:~# rmmod g_mass_storage
[  144.341522] g_mass_storage musb-hdrc: unregistering UDC driver [musb-hdrc]
[  144.360473] twl4030_usb twl4030_usb: twl4030_phy_resume
[  144.366333]  gadget: unbind function 'Mass Storage Function'/ddda81c0
[  144.373199]  gadget: unbind
[  144.381652] twl4030_usb twl4030_usb: twl4030_phy_suspend
[  144.389312]  lun0: close backing file
[  144.400421] twl4030_usb twl4030_usb: twl4030_phy_resume
[  144.406036] musb-hdrc musb-hdrc: remove, state 4
[  144.411590] usb usb2: USB disconnect, device number 1
[  144.429382] musb-hdrc musb-hdrc: USB bus 2 deregistered
[  144.464599] twl4030_usb twl4030_usb: twl4030_phy_suspend
root@beagleboard:~# rmmod omap2430
[  148.530517] twl4030_usb twl4030_usb: twl4030_phy_resume
[  148.540649] twl4030_usb twl4030_usb: twl4030_phy_suspend
[  148.552124] udc musb-hdrc: releasing 'musb-hdrc'
root@beagleboard:~# modprobe omap2430
[  154.626739] drivers/usb/musb/omap2430.c:584 (omap2430) omap2430_init
[  154.633728] drivers/usb/musb/omap2430.c:445 (omap2430) omap2430_probe
[  154.640533] musb-omap2430 musb-omap2430: Unbalanced pm_runtime_enable!
[  154.647918] drivers/usb/musb/musb_core.c:2118 (musb_hdrc) musb_probe
[  154.654663] drivers/usb/musb/musb_core.c:1888 (musb_hdrc) musb_init_controller
[  154.662292] drivers/usb/musb/musb_core.c:1813 (musb_hdrc) allocate_instance
[  154.698333] twl4030_usb twl4030_usb: twl4030_phy_resume
[  154.704010] drivers/usb/musb/musbhsdma.c:391 (musb_hdrc) dma_controller_create
[  154.711761] drivers/usb/musb/musb_core.c:1388 (musb_hdrc) musb_core_init
[  154.718811] musb-hdrc: ConfigData=0xde (UTMI-8, dyn FIFOs, bulk combine, bulk split, HB-ISO Rx, HB-ISO Tx, SoftConn)
[  154.729888] musb-hdrc: MHDRC RTL version 1.800
[  154.734680] drivers/usb/musb/musb_core.c:1246 (musb_hdrc) ep_config_from_table
[  154.742279] musb-hdrc: setup fifo_mode 4
[  154.746398] drivers/usb/musb/musb_core.c:1173 (musb_hdrc) fifo_setup
[  154.753082] drivers/usb/musb/musb_core.c:1173 (musb_hdrc) fifo_setup
[  154.759765] drivers/usb/musb/musb_core.c:1173 (musb_hdrc) fifo_setup
[  154.766479] drivers/usb/musb/musb_core.c:1173 (musb_hdrc) fifo_setup
[  154.773162] drivers/usb/musb/musb_core.c:1173 (musb_hdrc) fifo_setup
[  154.779846] drivers/usb/musb/musb_core.c:1173 (musb_hdrc) fifo_setup
[  154.786529] drivers/usb/musb/musb_core.c:1173 (musb_hdrc) fifo_setup
[  154.793212] drivers/usb/musb/musb_core.c:1173 (musb_hdrc) fifo_setup
[  154.799926] drivers/usb/musb/musb_core.c:1173 (musb_hdrc) fifo_setup
[  154.806640] drivers/usb/musb/musb_core.c:1173 (musb_hdrc) fifo_setup
[  154.813323] drivers/usb/musb/musb_core.c:1173 (musb_hdrc) fifo_setup
[  154.819976] drivers/usb/musb/musb_core.c:1173 (musb_hdrc) fifo_setup
[  154.826660] drivers/usb/musb/musb_core.c:1173 (musb_hdrc) fifo_setup
[  154.833343] drivers/usb/musb/musb_core.c:1173 (musb_hdrc) fifo_setup
[  154.840026] drivers/usb/musb/musb_core.c:1173 (musb_hdrc) fifo_setup
[  154.846710] drivers/usb/musb/musb_core.c:1173 (musb_hdrc) fifo_setup
[  154.853393] drivers/usb/musb/musb_core.c:1173 (musb_hdrc) fifo_setup
[  154.860107] drivers/usb/musb/musb_core.c:1173 (musb_hdrc) fifo_setup
[  154.866760] drivers/usb/musb/musb_core.c:1173 (musb_hdrc) fifo_setup
[  154.873443] drivers/usb/musb/musb_core.c:1173 (musb_hdrc) fifo_setup
[  154.880126] drivers/usb/musb/musb_core.c:1173 (musb_hdrc) fifo_setup
[  154.886840] drivers/usb/musb/musb_core.c:1173 (musb_hdrc) fifo_setup
[  154.893524] drivers/usb/musb/musb_core.c:1173 (musb_hdrc) fifo_setup
[  154.900207] drivers/usb/musb/musb_core.c:1173 (musb_hdrc) fifo_setup
[  154.906860] drivers/usb/musb/musb_core.c:1173 (musb_hdrc) fifo_setup
[  154.913513] drivers/usb/musb/musb_core.c:1173 (musb_hdrc) fifo_setup
[  154.920196] drivers/usb/musb/musb_core.c:1173 (musb_hdrc) fifo_setup
[  154.926879] drivers/usb/musb/musb_core.c:1173 (musb_hdrc) fifo_setup
[  154.933593] musb-hdrc: 28/31 max ep, 16384/16384 memory
[  154.939331] drivers/usb/musb/musb_gadget.c:1879 (musb_hdrc) musb_gadget_setup
[  154.946838] drivers/usb/musb/musb_gadget.c:1842 (musb_hdrc) musb_g_init_endpoints
[  154.954742] drivers/usb/musb/musb_gadget.c:1803 (musb_hdrc) init_peripheral_ep
[  154.962341] drivers/usb/musb/musb_gadget.c:1803 (musb_hdrc) init_peripheral_ep
[  154.969909] drivers/usb/musb/musb_gadget.c:1803 (musb_hdrc) init_peripheral_ep
[  154.977539] drivers/usb/musb/musb_gadget.c:1803 (musb_hdrc) init_peripheral_ep
[  154.985137] drivers/usb/musb/musb_gadget.c:1803 (musb_hdrc) init_peripheral_ep
[  154.992736] drivers/usb/musb/musb_gadget.c:1803 (musb_hdrc) init_peripheral_ep
[  155.000305] drivers/usb/musb/musb_gadget.c:1803 (musb_hdrc) init_peripheral_ep
[  155.007904] drivers/usb/musb/musb_gadget.c:1803 (musb_hdrc) init_peripheral_ep
[  155.015472] drivers/usb/musb/musb_gadget.c:1803 (musb_hdrc) init_peripheral_ep
[  155.023071] drivers/usb/musb/musb_gadget.c:1803 (musb_hdrc) init_peripheral_ep
[  155.030700] drivers/usb/musb/musb_gadget.c:1803 (musb_hdrc) init_peripheral_ep
[  155.038269] drivers/usb/musb/musb_gadget.c:1803 (musb_hdrc) init_peripheral_ep
[  155.045898] drivers/usb/musb/musb_gadget.c:1803 (musb_hdrc) init_peripheral_ep
[  155.053497] drivers/usb/musb/musb_gadget.c:1803 (musb_hdrc) init_peripheral_ep
[  155.061096] drivers/usb/musb/musb_gadget.c:1803 (musb_hdrc) init_peripheral_ep
[  155.068695] drivers/usb/musb/musb_gadget.c:1803 (musb_hdrc) init_peripheral_ep
[  155.076293] drivers/usb/musb/musb_gadget.c:1803 (musb_hdrc) init_peripheral_ep
[  155.083923] drivers/usb/musb/musb_gadget.c:1803 (musb_hdrc) init_peripheral_ep
[  155.091522] drivers/usb/musb/musb_gadget.c:1803 (musb_hdrc) init_peripheral_ep
[  155.099090] drivers/usb/musb/musb_gadget.c:1803 (musb_hdrc) init_peripheral_ep
[  155.106689] drivers/usb/musb/musb_gadget.c:1803 (musb_hdrc) init_peripheral_ep
[  155.114318] drivers/usb/musb/musb_gadget.c:1803 (musb_hdrc) init_peripheral_ep
[  155.121917] drivers/usb/musb/musb_gadget.c:1803 (musb_hdrc) init_peripheral_ep
[  155.129486] drivers/usb/musb/musb_gadget.c:1803 (musb_hdrc) init_peripheral_ep
[  155.137084] drivers/usb/musb/musb_gadget.c:1803 (musb_hdrc) init_peripheral_ep
[  155.144683] drivers/usb/musb/musb_gadget.c:1803 (musb_hdrc) init_peripheral_ep
[  155.152282] drivers/usb/musb/musb_gadget.c:1803 (musb_hdrc) init_peripheral_ep
[  155.159881] drivers/usb/musb/musb_gadget.c:1803 (musb_hdrc) init_peripheral_ep
[  155.169403] musb-hdrc musb-hdrc: USB OTG mode controller at fa0ab000 using DMA, IRQ 92
[  155.198974] twl4030_usb twl4030_usb: twl4030_phy_suspend