I'm experiencing lots of errors and significant delays in connecting the OTG USB device of an IGEPv2 (TI OMAP3530: ARM CORTEX A8 core + POWERVR SGX 530 core + IVA2.2 + DSP TMS320C64x+) to either another linux or win32 host machine. When used with the g_file_storage module, it usually takes a full 10 minutes before the mass storage file system mounts on the host machine. I'm running a 2.6.33 kernel from http://git.myigep.com/pub/scm/linux-omap-2.6.git. The sources for this kernel apparently have the appropriate arm patches as well as other IGEPv2 required patches. I have also applied the patch mentioned here: http://marc.info/?l=linux-usb&m=126089879722260&w=2 without which the musb_hdrc driver fails to initialize in OTG (host+peripheral) mode due to a bug regarding checking for dynamic FIFO configuration. When the system is booted, I see this: Dec 31 16:00:07 igep kernel: [ 10.773742] musb_hdrc: version 6.0, musb-dma, otg (peripheral+host), debug=0 Dec 31 16:00:07 igep kernel: [ 10.776733] musb_hdrc: USB OTG mode controller at fa0ab000 using DMA, IRQ 92 And when the g_file_storage module is loaded (with an associated file-based file system), I see: Feb 27 14:58:12 igep kernel: [ 338.600250] g_file_storage gadget: File-backed Storage Gadget, version: 20 November 2008 Feb 27 14:58:12 igep kernel: [ 338.600280] g_file_storage gadget: Number of LUNs=1 Feb 27 14:58:12 igep kernel: [ 338.600311] g_file_storage gadget-lun0: ro=0, file: /home/eswenson/mstd/mstd_device.backing_file Feb 27 14:58:12 igep kernel: [ 338.600433] musb_hdrc musb_hdrc: MUSB HDRC host driver Feb 27 14:58:12 igep kernel: [ 338.600524] musb_hdrc musb_hdrc: new USB bus registered, assigned bus number 2 Feb 27 14:58:12 igep kernel: [ 338.600677] usb usb2: New USB device found, idVendor=1d6b, idProduct=0002 Feb 27 14:58:12 igep kernel: [ 338.600708] usb usb2: New USB device strings: Mfr=3, Product=2, SerialNumber=1 Feb 27 14:58:12 igep kernel: [ 338.600708] usb usb2: Product: MUSB HDRC host driver Feb 27 14:58:12 igep kernel: [ 338.600738] usb usb2: Manufacturer: Linux 2.6.33-rc8-ejs-2010-02-27a musb-hcd Feb 27 14:58:12 igep kernel: [ 338.600769] usb usb2: SerialNumber: musb_hdrc Feb 27 14:58:12 igep kernel: [ 338.625549] hub 2-0:1.0: USB hub found Feb 27 14:58:12 igep kernel: [ 338.625610] hub 2-0:1.0: 1 port detected However, it takes a full 10 minutes (approximately) before the system to which the OTG device is attached is able to see and complete the mount of the mass storage file system. Because I've enabled debugging messages, I see 100s of messages like the following in syslog: Feb 27 09:34:15 igep kernel: [ 1719.585845] g_file_storage gadget: disconnect or port reset Feb 27 09:34:15 igep kernel: [ 1719.585937] g_file_storage gadget: bulk_out_complete --> -104, 0/31 Feb 27 09:34:15 igep kernel: [ 1719.585968] g_file_storage gadget: bulk_in_complete --> -104, 0/13 Feb 27 09:34:15 igep kernel: [ 1719.585998] g_file_storage gadget: reset config Feb 27 09:34:15 igep kernel: [ 1719.586029] g_file_storage gadget: reset interface Feb 27 09:34:15 igep kernel: [ 1719.743591] g_file_storage gadget: disconnect or port reset Feb 27 09:34:15 igep kernel: [ 1719.940307] g_file_storage gadget: set interface 0 Feb 27 09:34:15 igep kernel: [ 1719.940338] musb_hdrc periph: enabled ep1in for bulk IN, dma, maxpacket 512 Feb 27 09:34:15 igep kernel: [ 1719.940368] musb_hdrc periph: enabled ep1out for bulk OUT, dma, maxpacket 512 Feb 27 09:34:15 igep kernel: [ 1719.940399] g_file_storage gadget: high speed config #1 Feb 27 09:34:16 igep kernel: [ 1720.757080] g_file_storage gadget: bulk_out_complete --> -104, 0/31 Feb 27 09:34:16 igep kernel: [ 1720.757110] g_file_storage gadget: reset config Feb 27 09:34:16 igep kernel: [ 1720.757110] g_file_storage gadget: reset interface Feb 27 09:34:16 igep kernel: [ 1720.757141] g_file_storage gadget: set interface 0 Feb 27 09:34:16 igep kernel: [ 1720.757171] musb_hdrc periph: enabled ep1in for bulk IN, dma, maxpacket 512 Feb 27 09:34:16 igep kernel: [ 1720.757171] musb_hdrc periph: enabled ep1out for bulk OUT, dma, maxpacket 512 Feb 27 09:34:16 igep kernel: [ 1720.757202] g_file_storage gadget: high speed config #1 Feb 27 09:34:16 igep kernel: [ 1720.761077] g_file_storage gadget: sending command-failure status Feb 27 09:34:16 igep kernel: [ 1720.765563] g_file_storage gadget: bulk-in set halt Feb 27 09:34:47 igep kernel: [ 1751.584777] g_file_storage gadget: disconnect or port reset Feb 27 09:34:47 igep kernel: [ 1751.584869] g_file_storage gadget: bulk_out_complete --> -104, 0/31 Feb 27 09:34:47 igep kernel: [ 1751.584899] g_file_storage gadget: bulk_in_complete --> -104, 0/13 Feb 27 09:34:47 igep kernel: [ 1751.584930] g_file_storage gadget: reset config Feb 27 09:34:47 igep kernel: [ 1751.584960] g_file_storage gadget: reset interface Feb 27 09:34:47 igep kernel: [ 1751.742523] g_file_storage gadget: disconnect or port reset Feb 27 09:34:47 igep kernel: [ 1751.939208] g_file_storage gadget: set interface 0 Feb 27 09:34:47 igep kernel: [ 1751.939239] musb_hdrc periph: enabled ep1in for bulk IN, dma, maxpacket 512 Feb 27 09:34:47 igep kernel: [ 1751.939270] musb_hdrc periph: enabled ep1out for bulk OUT, dma, maxpacket 512 Feb 27 09:34:47 igep kernel: [ 1751.939300] g_file_storage gadget: high speed config #1 Feb 27 09:34:48 igep kernel: [ 1752.784118] g_file_storage gadget: bulk_out_complete --> -104, 0/31 Feb 27 09:34:48 igep kernel: [ 1752.784118] g_file_storage gadget: reset config Feb 27 09:34:48 igep kernel: [ 1752.784149] g_file_storage gadget: reset interface Feb 27 09:34:48 igep kernel: [ 1752.784179] g_file_storage gadget: set interface 0 This goes on and on for 10 minutes. On the host (linux, in this case) side, I see the following: Feb 27 09:28:04 ubuntu kernel: [ 1923.169041] usb 1-2: new high speed USB device using ehci_hcd and address 3 Feb 27 09:28:04 ubuntu kernel: [ 1923.310423] usb 1-2: configuration #1 chosen from 1 choice Feb 27 09:28:04 ubuntu kernel: [ 1923.316814] scsi4 : SCSI emulation for USB Mass Storage devices Feb 27 09:28:09 ubuntu kernel: [ 1928.322471] scsi 4:0:0:0: Direct-Access Linux File-Stor Gadget 0316 PQ: 0 ANSI: 2 Feb 27 09:28:09 ubuntu kernel: [ 1928.325686] sd 4:0:0:0: Attached scsi generic sg3 type 0 Feb 27 09:28:09 ubuntu kernel: [ 1928.345810] sd 4:0:0:0: [sdc] 131072 512-byte logical blocks: (67.1 MB/64.0 MiB) Feb 27 09:28:38 ubuntu kernel: [ 1957.221187] usb 1-2: reset high speed USB device using ehci_hcd and address 3 Feb 27 09:28:53 ubuntu kernel: [ 1972.286371] sd 4:0:0:0: Device offlined - not ready after error recovery Feb 27 09:28:53 ubuntu kernel: [ 1972.286551] sd 4:0:0:0: [sdc] Write Protect is off Feb 27 09:28:53 ubuntu kernel: [ 1972.319302] usb 1-2: USB disconnect, address 3 Feb 27 09:28:53 ubuntu kernel: [ 1972.373589] sd 4:0:0:0: [sdc] READ CAPACITY failed Feb 27 09:28:53 ubuntu kernel: [ 1972.373647] sd 4:0:0:0: [sdc] Result: hostbyte=DID_NO_CONNECT driverbyte=DRIVER_OK Feb 27 09:28:53 ubuntu kernel: [ 1972.373748] sd 4:0:0:0: [sdc] Sense not available. Feb 27 09:28:53 ubuntu kernel: [ 1972.374200] sdc: detected capacity change from 67108864 to 0 Feb 27 09:28:53 ubuntu kernel: [ 1972.376063] sd 4:0:0:0: [sdc] READ CAPACITY failed Feb 27 09:28:53 ubuntu kernel: [ 1972.376066] sd 4:0:0:0: [sdc] Result: hostbyte=DID_NO_CONNECT driverbyte=DRIVER_OK Feb 27 09:28:53 ubuntu kernel: [ 1972.376071] sd 4:0:0:0: [sdc] Sense not available. Feb 27 09:28:53 ubuntu kernel: [ 1972.376169] sd 4:0:0:0: [sdc] Attached SCSI disk Feb 27 09:28:53 ubuntu kernel: [ 1972.492857] usb 1-2: new high speed USB device using ehci_hcd and address 4 Feb 27 09:28:54 ubuntu kernel: [ 1972.758238] usb 1-2: configuration #1 chosen from 1 choice Feb 27 09:28:54 ubuntu kernel: [ 1972.767269] scsi5 : SCSI emulation for USB Mass Storage devices Feb 27 09:28:59 ubuntu kernel: [ 1978.271831] scsi 5:0:0:0: Direct-Access Linux File-Stor Gadget 0316 PQ: 0 ANSI: 2 Feb 27 09:28:59 ubuntu kernel: [ 1978.274227] sd 5:0:0:0: Attached scsi generic sg3 type 0 Feb 27 09:28:59 ubuntu kernel: [ 1978.289211] sd 5:0:0:0: [sdc] 131072 512-byte logical blocks: (67.1 MB/64.0 MiB) Feb 27 09:29:30 ubuntu kernel: [ 2009.504382] usb 1-2: reset high speed USB device using ehci_hcd and address 4 Feb 27 09:30:02 ubuntu kernel: [ 2041.504193] usb 1-2: reset high speed USB device using ehci_hcd and address 4 Feb 27 09:30:33 ubuntu kernel: [ 2072.508969] usb 1-2: reset high speed USB device using ehci_hcd and address 4 Feb 27 09:31:05 ubuntu kernel: [ 2104.512059] usb 1-2: reset high speed USB device using ehci_hcd and address 4 Feb 27 09:31:37 ubuntu kernel: [ 2136.500618] usb 1-2: reset high speed USB device using ehci_hcd and address 4 Feb 27 09:32:02 ubuntu kernel: [ 2161.393235] async/0 D c08145c0 0 6208 2 0x00000000 Feb 27 09:32:02 ubuntu kernel: [ 2161.393330] c8345cc4 00000046 c8166000 c08145c0 d785da88 c08145c0 9b3ab41d 000001cc Feb 27 09:32:02 ubuntu kernel: [ 2161.393399] c08145c0 c08145c0 d785da88 c08145c0 00000000 000001cc c08145c0 dd8d5c40 Feb 27 09:32:02 ubuntu kernel: [ 2161.393405] d785d7f0 c8345d74 7fffffff c8345d78 c8345d20 c056f0d5 df125c00 dd8d0970 Feb 27 09:32:02 ubuntu kernel: [ 2161.393434] Call Trace: Feb 27 09:32:02 ubuntu kernel: [ 2161.393865] [<c056f0d5>] schedule_timeout+0x185/0x200 Feb 27 09:32:02 ubuntu kernel: [ 2161.393912] [<c0311bfd>] ? kobject_put+0x1d/0x50 Feb 27 09:32:02 ubuntu kernel: [ 2161.393980] [<c03b25d8>] ? scsi_dispatch_cmd+0x158/0x260 Feb 27 09:32:02 ubuntu kernel: [ 2161.393987] [<c0306ebe>] ? blk_add_timer+0x6e/0xc0 Feb 27 09:32:02 ubuntu kernel: [ 2161.393991] [<c0570803>] ? _spin_lock_irq+0x13/0x20 Feb 27 09:32:02 ubuntu kernel: [ 2161.393996] [<c03b8683>] ? scsi_request_fn+0xc3/0x4b0 Feb 27 09:32:02 ubuntu kernel: [ 2161.394000] [<c056edf2>] wait_for_common+0xa2/0x120 Feb 27 09:32:02 ubuntu kernel: [ 2161.394013] [<c013c5a0>] ? default_wake_function+0x0/0x10 Feb 27 09:32:02 ubuntu kernel: [ 2161.394017] [<c056ef02>] wait_for_completion+0x12/0x20 Feb 27 09:32:02 ubuntu kernel: [ 2161.394021] [<c0306195>] blk_execute_rq+0x75/0xd0 Feb 27 09:32:02 ubuntu kernel: [ 2161.394025] [<c0306050>] ? blk_end_sync_rq+0x0/0x30 Feb 27 09:32:02 ubuntu kernel: [ 2161.394029] [<c03063de>] ? blk_recount_segments+0x1e/0x40 Feb 27 09:32:02 ubuntu kernel: [ 2161.394036] [<c03021ba>] ? blk_rq_bio_prep+0x6a/0x80 Feb 27 09:32:02 ubuntu kernel: [ 2161.394040] [<c0305c8f>] ? blk_rq_append_bio+0x1f/0x60 Feb 27 09:32:02 ubuntu kernel: [ 2161.394044] [<c0305d8e>] ? blk_rq_map_kern+0xbe/0x120 Feb 27 09:32:02 ubuntu kernel: [ 2161.394048] [<c03b9b12>] scsi_execute+0xb2/0x140 Feb 27 09:32:02 ubuntu kernel: [ 2161.394052] [<c03b9d45>] scsi_execute_req+0x85/0x140 Feb 27 09:32:02 ubuntu kernel: [ 2161.394056] [<c03ba08b>] scsi_mode_sense+0xeb/0x2f0 Feb 27 09:32:02 ubuntu kernel: [ 2161.394064] [<c03c45f8>] sd_read_write_protect_flag+0xb8/0x420 Feb 27 09:32:02 ubuntu kernel: [ 2161.394069] [<c03c4aaf>] sd_revalidate_disk+0x14f/0x2b0 Feb 27 09:32:02 ubuntu kernel: [ 2161.394078] [<c03c4ccf>] sd_probe_async+0xbf/0x1c0 Feb 27 09:32:02 ubuntu kernel: [ 2161.394086] [<c0127c38>] ? default_spin_lock_flags+0x8/0x10 Feb 27 09:32:02 ubuntu kernel: [ 2161.394090] [<c05707da>] ? _spin_lock_irqsave+0x2a/0x40 Feb 27 09:32:02 ubuntu kernel: [ 2161.394097] [<c0162b65>] run_one_entry+0x65/0x190 Feb 27 09:32:02 ubuntu kernel: [ 2161.394101] [<c0127c38>] ? default_spin_lock_flags+0x8/0x10 Feb 27 09:32:02 ubuntu kernel: [ 2161.394105] [<c05707da>] ? _spin_lock_irqsave+0x2a/0x40 Feb 27 09:32:02 ubuntu kernel: [ 2161.394110] [<c015c5ab>] ? add_wait_queue+0x3b/0x50 Feb 27 09:32:02 ubuntu kernel: [ 2161.394113] [<c0162c90>] ? async_thread+0x0/0xd0 Feb 27 09:32:02 ubuntu kernel: [ 2161.394117] [<c0162cdd>] async_thread+0x4d/0xd0 Feb 27 09:32:02 ubuntu kernel: [ 2161.394121] [<c013c5a0>] ? default_wake_function+0x0/0x10 Feb 27 09:32:02 ubuntu kernel: [ 2161.394124] [<c015bf8c>] kthread+0x7c/0x90 Feb 27 09:32:02 ubuntu kernel: [ 2161.394128] [<c015bf10>] ? kthread+0x0/0x90 Feb 27 09:32:02 ubuntu kernel: [ 2161.394132] [<c0104007>] kernel_thread_helper+0x7/0x10 Feb 27 09:32:09 ubuntu kernel: [ 2168.504450] usb 1-2: reset high speed USB device using ehci_hcd and address 4 Feb 27 09:32:10 ubuntu kernel: [ 2168.800954] sd 5:0:0:0: [sdc] Write Protect is off Feb 27 09:32:40 ubuntu kernel: [ 2199.504197] usb 1-2: reset high speed USB device using ehci_hcd and address 4 Feb 27 09:33:11 ubuntu kernel: [ 2230.508961] usb 1-2: reset high speed USB device using ehci_hcd and address 4 Feb 27 09:33:32 ubuntu pulseaudio[1786]: ratelimit.c: 801 events suppressed Feb 27 09:33:42 ubuntu kernel: [ 2261.504256] usb 1-2: reset high speed USB device using ehci_hcd and address 4 Feb 27 09:34:14 ubuntu kernel: [ 2293.504595] usb 1-2: reset high speed USB device using ehci_hcd and address 4 Feb 27 09:34:46 ubuntu kernel: [ 2325.508431] usb 1-2: reset high speed USB device using ehci_hcd and address 4 Feb 27 09:35:18 ubuntu kernel: [ 2357.504249] usb 1-2: reset high speed USB device using ehci_hcd and address 4 Feb 27 09:35:19 ubuntu kernel: [ 2358.113600] sdc: sdc1 Feb 27 09:35:50 ubuntu kernel: [ 2389.508062] usb 1-2: reset high speed USB device using ehci_hcd and address 4 Feb 27 09:36:22 ubuntu kernel: [ 2421.504909] usb 1-2: reset high speed USB device using ehci_hcd and address 4 Feb 27 09:36:54 ubuntu kernel: [ 2453.504700] usb 1-2: reset high speed USB device using ehci_hcd and address 4 Feb 27 09:37:25 ubuntu kernel: [ 2484.504489] usb 1-2: reset high speed USB device using ehci_hcd and address 4 Feb 27 09:37:57 ubuntu kernel: [ 2516.504314] usb 1-2: reset high speed USB device using ehci_hcd and address 4 Feb 27 09:38:02 ubuntu kernel: [ 2521.392654] async/0 D c08145c0 0 6208 2 0x00000000 Feb 27 09:38:02 ubuntu kernel: [ 2521.392660] c8345cc4 00000046 c08145c0 c08145c0 d785da88 c08145c0 0bd685a1 00000225 Feb 27 09:38:02 ubuntu kernel: [ 2521.392666] c08145c0 c08145c0 d785da88 c08145c0 0bd5bc0c 00000225 c08145c0 ca806000 Feb 27 09:38:02 ubuntu kernel: [ 2521.392713] d785d7f0 c8345d74 7fffffff c8345d78 c8345d20 c056f0d5 ca95f3e8 dd8d0970 Feb 27 09:38:02 ubuntu kernel: [ 2521.392720] Call Trace: Feb 27 09:38:02 ubuntu kernel: [ 2521.392735] [<c056f0d5>] schedule_timeout+0x185/0x200 Feb 27 09:38:02 ubuntu kernel: [ 2521.392744] [<c0311bfd>] ? kobject_put+0x1d/0x50 Feb 27 09:38:02 ubuntu kernel: [ 2521.392751] [<c0150417>] ? lock_timer_base+0x27/0x50 Feb 27 09:38:02 ubuntu kernel: [ 2521.392755] [<c0570803>] ? _spin_lock_irq+0x13/0x20 Feb 27 09:38:02 ubuntu kernel: [ 2521.392764] [<c03b8683>] ? scsi_request_fn+0xc3/0x4b0 Feb 27 09:38:02 ubuntu kernel: [ 2521.392768] [<c056edf2>] wait_for_common+0xa2/0x120 Feb 27 09:38:02 ubuntu kernel: [ 2521.392773] [<c013c5a0>] ? default_wake_function+0x0/0x10 Feb 27 09:38:02 ubuntu kernel: [ 2521.392777] [<c056ef02>] wait_for_completion+0x12/0x20 Feb 27 09:38:02 ubuntu kernel: [ 2521.392781] [<c0306195>] blk_execute_rq+0x75/0xd0 Feb 27 09:38:02 ubuntu kernel: [ 2521.392785] [<c0306050>] ? blk_end_sync_rq+0x0/0x30 Feb 27 09:38:02 ubuntu kernel: [ 2521.392789] [<c03063de>] ? blk_recount_segments+0x1e/0x40 Feb 27 09:38:02 ubuntu kernel: [ 2521.392795] [<c03021ba>] ? blk_rq_bio_prep+0x6a/0x80 Feb 27 09:38:02 ubuntu kernel: [ 2521.392798] [<c0305c8f>] ? blk_rq_append_bio+0x1f/0x60 Feb 27 09:38:02 ubuntu kernel: [ 2521.392802] [<c0305d8e>] ? blk_rq_map_kern+0xbe/0x120 Feb 27 09:38:02 ubuntu kernel: [ 2521.392806] [<c03b9b12>] scsi_execute+0xb2/0x140 Feb 27 09:38:02 ubuntu kernel: [ 2521.392810] [<c03b9d45>] scsi_execute_req+0x85/0x140 Feb 27 09:38:02 ubuntu kernel: [ 2521.392815] [<c03ba08b>] scsi_mode_sense+0xeb/0x2f0 Feb 27 09:38:02 ubuntu kernel: [ 2521.392820] [<c03c45f8>] sd_read_write_protect_flag+0xb8/0x420 Feb 27 09:38:02 ubuntu kernel: [ 2521.392824] [<c03c4aaf>] sd_revalidate_disk+0x14f/0x2b0 Feb 27 09:38:02 ubuntu kernel: [ 2521.392851] [<c023b392>] ? sysfs_create_link+0x12/0x20 Feb 27 09:38:02 ubuntu kernel: [ 2521.392856] [<c0308614>] ? add_disk+0xb4/0x140 Feb 27 09:38:02 ubuntu kernel: [ 2521.392859] [<c0307de0>] ? exact_match+0x0/0x10 Feb 27 09:38:02 ubuntu kernel: [ 2521.392863] [<c03c4d1d>] sd_probe_async+0x10d/0x1c0 Feb 27 09:38:02 ubuntu kernel: [ 2521.392870] [<c0127c38>] ? default_spin_lock_flags+0x8/0x10 Feb 27 09:38:02 ubuntu kernel: [ 2521.392874] [<c05707da>] ? _spin_lock_irqsave+0x2a/0x40 Feb 27 09:38:02 ubuntu kernel: [ 2521.392880] [<c0162b65>] run_one_entry+0x65/0x190 Feb 27 09:38:02 ubuntu kernel: [ 2521.392884] [<c0127c38>] ? default_spin_lock_flags+0x8/0x10 Feb 27 09:38:02 ubuntu kernel: [ 2521.392888] [<c05707da>] ? _spin_lock_irqsave+0x2a/0x40 Feb 27 09:38:02 ubuntu kernel: [ 2521.392893] [<c015c5ab>] ? add_wait_queue+0x3b/0x50 Feb 27 09:38:02 ubuntu kernel: [ 2521.392896] [<c0162c90>] ? async_thread+0x0/0xd0 Feb 27 09:38:02 ubuntu kernel: [ 2521.392900] [<c0162cdd>] async_thread+0x4d/0xd0 Feb 27 09:38:02 ubuntu kernel: [ 2521.392904] [<c013c5a0>] ? default_wake_function+0x0/0x10 Feb 27 09:38:02 ubuntu kernel: [ 2521.392907] [<c015bf8c>] kthread+0x7c/0x90 Feb 27 09:38:02 ubuntu kernel: [ 2521.392911] [<c015bf10>] ? kthread+0x0/0x90 Feb 27 09:38:02 ubuntu kernel: [ 2521.392915] [<c0104007>] kernel_thread_helper+0x7/0x10 Feb 27 09:38:28 ubuntu kernel: [ 2547.508083] usb 1-2: reset high speed USB device using ehci_hcd and address 4 Feb 27 09:38:29 ubuntu kernel: [ 2547.948493] sd 5:0:0:0: [sdc] Attached SCSI disk As can be seen, it took 10 minutes before the host was able to mount the mass storage file system (/dev/sdc1). The output of /proc/interrupts is: $ cat /proc/interrupts CPU0 7: 2 INTC TWL4030-PIH 11: 0 INTC prcm 12: 17031 INTC DMA 25: 4 INTC OMAP DSS 37: 23210 INTC gp timer 56: 536 INTC i2c_omap 61: 0 INTC i2c_omap 72: 3 INTC serial idle 73: 3 INTC serial idle 74: 10 INTC serial idle, serial 77: 0 INTC ehci_hcd:usb1 83: 13699 INTC mmc0 86: 134 INTC mmc1 92: 1 INTC musb_hdrc 93: 0 INTC musb_hdrc 336: 2248 GPIO eth0 378: 2 twl4030 twl4030_usb 384: 0 twl4030 mmc0 Err: 0 $ The subset output of "lsusb -v" is: Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Device Descriptor: bLength 18 bDescriptorType 1 bcdUSB 2.00 bDeviceClass 9 Hub bDeviceSubClass 0 Unused bDeviceProtocol 0 Full speed (or root) hub bMaxPacketSize0 64 idVendor 0x1d6b Linux Foundation idProduct 0x0002 2.0 root hub bcdDevice 2.06 iManufacturer 3 Linux 2.6.33-rc8-ejs-2010-02-27a musb-hcd iProduct 2 MUSB HDRC host driver iSerial 1 musb_hdrc bNumConfigurations 1 Configuration Descriptor: bLength 9 bDescriptorType 2 wTotalLength 25 bNumInterfaces 1 bConfigurationValue 1 iConfiguration 0 bmAttributes 0xe0 Self Powered Remote Wakeup MaxPower 0mA Interface Descriptor: bLength 9 bDescriptorType 4 bInterfaceNumber 0 bAlternateSetting 0 bNumEndpoints 1 bInterfaceClass 9 Hub bInterfaceSubClass 0 Unused bInterfaceProtocol 0 Full speed (or root) hub iInterface 0 Endpoint Descriptor: bLength 7 bDescriptorType 5 bEndpointAddress 0x81 EP 1 IN bmAttributes 3 Transfer Type Interrupt Synch Type None Usage Type Data wMaxPacketSize 0x0004 1x 4 bytes bInterval 12 Hub Descriptor: bLength 9 bDescriptorType 41 nNbrPorts 1 wHubCharacteristic 0x0011 Per-port power switching No overcurrent protection bPwrOn2PwrGood 5 * 2 milli seconds bHubContrCurrent 0 milli Ampere DeviceRemovable 0x02 PortPwrCtrlMask 0xff Hub Port Status: Port 1: 0000.0100 power Device Status: 0x0003 Self Powered Remote Wakeup Enabled Does anyone have any recommendations of what I can try in order to narrow this problem down? Is there any other output that I should provide in order to supply any other relevant information? (/proc/bus/usb is an empty directory on my machine, but /sys/bus/usb is very populated tree a subset of whose contents might be useful). Thanks much for any pointers... -- Eric -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
