I've been trying to get the UVC camera driver working in linux-omap on the Beagleboard, which uses musb. With the latest linux-omap git, capture doesn't work. Applying Ajay Gupta's MUSB patches posted here on 9/8 allows capture to work until the device is closed. With or without Ajay's patches, when the device is closed, the following lockup occurs. Let me know if there is anything I can do to help debug this. BUG: soft lockup - CPU#0 stuck for 61s! [mjpg_streamer:1770] Modules linked in: ipv6 pegasus uvcvideo compat_ioctl32 videodev v4l1_compat Pid: 1770, comm: mjpg_streamer CPU: 0 Not tainted (2.6.27-rc7-omap1 #4) PC is at __mutex_lock_slowpath+0x1ec/0x204 LR is at __mutex_lock_slowpath+0x1c4/0x204 pc : [<c0320fa0>] lr : [<c0320f78>] psr: 60000013 sp : c7265ca0 ip : c7265ca0 fp : c7265cd4 r10: c79eb400 r9 : c7128218 r8 : c78a6a08 r7 : c78df9c0 r6 : 60000013 r5 : c0437690 r4 : c7265ca4 r3 : 00000000 r2 : 00000000 r1 : c7264000 r0 : c0437690 Flags: nZCv IRQs on FIQs on Mode SVC_32 ISA ARM Segment user Control: 00c5387f Table: 87348018 DAC: 00000015 [<c0034ca8>] (show_regs+0x0/0x50) from [<c007959c>] (softlockup_tick+0x100/0x140) r5:000000bc r4:0000007f [<c007949c>] (softlockup_tick+0x0/0x140) from [<c005c08c>] (run_local_timers+0x1c/0x20) [<c005c070>] (run_local_timers+0x0/0x20) from [<c005c4e8>] (update_process_times+0x30/0x5c) [<c005c4b8>] (update_process_times+0x0/0x5c) from [<c006f138>] (tick_sched_timer+0x8c/0xd8) r5:c7265c58 r4:c044d630 [<c006f0ac>] (tick_sched_timer+0x0/0xd8) from [<c0069090>] (__run_hrtimer+0x58/0x94) r7:c0425e60 r6:c044d630 r5:c0425e60 r4:c044d630 [<c0069038>] (__run_hrtimer+0x0/0x94) from [<c0069c64>] (hrtimer_interrupt+0x130/0x1a0) r5:000000b9 r4:183847b0 [<c0069b34>] (hrtimer_interrupt+0x0/0x1a0) from [<c003d248>] (omap2_gp_timer_interrupt+0x28/0x34) [<c003d220>] (omap2_gp_timer_interrupt+0x0/0x34) from [<c0079a58>] (handle_IRQ_event+0x3c/0x74) [<c0079a1c>] (handle_IRQ_event+0x0/0x74) from [<c007b2a4>] (handle_level_irq+0xd4/0xf0) r7:c78df9c0 r6:00000000 r5:0000005f r4:c04279a8 [<c007b1d0>] (handle_level_irq+0x0/0xf0) from [<c0033048>] (__exception_text_start+0x48/0x64) r5:c04279a8 r4:0000005f [<c0033000>] (__exception_text_start+0x0/0x64) from [<c0033830>] (__irq_svc+0x30/0x80) Exception stack(0xc7265c58 to 0xc7265ca0) 5c40: c0437690 c7264000 5c60: 00000000 00000000 c7265ca4 c0437690 60000013 c78df9c0 c78a6a08 c7128218 5c80: c79eb400 c7265cd4 c7265ca0 c7265ca0 c0320f78 c0320fa0 60000013 ffffffff r7:c78df9c0 r6:60000013 r5:d8200000 r4:ffffffff [<c0320db4>] (__mutex_lock_slowpath+0x0/0x204) from [<c0320fc8>] (mutex_lock+0x10/0x14) r7:c7893000 r6:c7170c00 r5:c7170c00 r4:c791c738 [<c0320fb8>] (mutex_lock+0x0/0x14) from [<c01ed760>] (usb_kill_urb+0x38/0x104) [<c01ed728>] (usb_kill_urb+0x0/0x104) from [<c01ece30>] (usb_hcd_flush_endpoint+0xb0/0xcc) r6:c791c740 r5:c7170c00 r4:c791c738 [<c01ecd80>] (usb_hcd_flush_endpoint+0x0/0xcc) from [<c01ee044>] (usb_disable_endpoint+0x5c/0x6c) r7:c7893000 r6:c78a6a40 r5:c7893000 r4:c791c740 [<c01edfe8>] (usb_disable_endpoint+0x0/0x6c) from [<c01ee180>] (usb_disable_interface+0x34/0x4c) r5:00000028 r4:00000001 [<c01ee14c>] (usb_disable_interface+0x0/0x4c) from [<c01ef4e0>] (usb_set_interface+0xec/0x178) r7:00000001 r6:00000000 r5:c7893000 r4:c78a6e00 [<c01ef3f4>] (usb_set_interface+0x0/0x178) from [<bf014c48>] (uvc_video_enable+0x3c/0x74 [uvcvideo]) r8:c721c050 r7:c7265e68 r6:c721c094 r5:00000000 r4:c721c050 [<bf014c0c>] (uvc_video_enable+0x0/0x74 [uvcvideo]) from [<bf014308>] (uvc_v4l2_do_ioctl+0xce4/0xf50 [uvcvideo]) r7:c7265e68 r6:c79f9e00 r5:c78d4760 r4:40045613 [<bf013624>] (uvc_v4l2_do_ioctl+0x0/0xf50 [uvcvideo]) from [<bf008e20>] (video_usercopy+0x1b8/0x2b8 [videodev]) [<bf008c68>] (video_usercopy+0x0/0x2b8 [videodev]) from [<bf012fdc>] (uvc_v4l2_ioctl+0x54/0x68 [uvcvideo]) [<bf012f88>] (uvc_v4l2_ioctl+0x0/0x68 [uvcvideo]) from [<c00ace28>] (vfs_ioctl+0x68/0x78) r7:c79eb400 r6:00000003 r5:40c78ccc r4:40045613 [<c00acdc0>] (vfs_ioctl+0x0/0x78) from [<c00ad0a8>] (do_vfs_ioctl+0x270/0x280) r5:40c78ccc r4:c79eb400 [<c00ace38>] (do_vfs_ioctl+0x0/0x280) from [<c00ad0f8>] (sys_ioctl+0x40/0x64) r7:c79eb400 r6:40045613 r5:40c78ccc r4:00000003 [<c00ad0b8>] (sys_ioctl+0x0/0x64) from [<c0033c80>] (ret_fast_syscall+0x0/0x2c) - Nathan -- To unsubscribe from this list: send the line "unsubscribe linux-omap" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
