Amit, see if this is of any help in your investigation.. 18 is error code for -EXDEV #define EXDEV 18 /* Cross-device link */ which is set in int usb_submit_urb(struct urb *urb, gfp_t mem_flags) ( drivers/usb/core/urb.c ) urb->iso_frame_desc[n].status = -EXDEV; urb->iso_frame_desc[n].actual_length = 0; In retire_capture_urb() it prints this iso_frame_desc Regards, - Rahul Ruikar On 21 October 2010 18:08, Amit Nagal <helloin.amit@xxxxxxxxx> wrote: > Hi , > > Just sharing the dump stack at the time of ALSA -18 continous error > logs coming from retire_capture_urb() function : > > > [<bf3a7860>] (retire_capture_urb+0x0/0x1ec [snd_usb_audio]) from > [<bf3a77d4>] (snd_complete_urb+0x3c/0xc8 [snd_usb_audio]) > > [<bf3a7798>] (snd_complete_urb+0x0/0xc8 [snd_usb_audio]) from > [<bf0fd460>] (usb_hcd_giveback_urb+0x78/0x1d4 [usbcore]) > r8:ffc63480 r7:c37a3f00 r6:00000000 r5:00000000 r4:c1047ac0 > r3:bf3a7798 > > [<bf0fd3e8>] (usb_hcd_giveback_urb+0x0/0x1d4 [usbcore]) from > [<bf11a40c>] (ehci_shutdown+0x2f4/0xacc [ehci_hcd]) > r5:c100b400 r4:c1047ac0 > > [<bf11a360>] (ehci_shutdown+0x248/0xacc [ehci_hcd]) from [<bf11c128>] > (ehci_urb_dequeue+0xf0c/0x12b4 [ehci_hcd]) > r6:c100b400 r5:ffc63460 r4:c100b4d0 r3:00000001 > > [<bf11bcac>] (ehci_urb_dequeue+0xa90/0x12b4 [ehci_hcd]) from > [<bf11d15c>] (ehci_irq+0x1bc/0x204 [ehci_hcd]) > > [<bf11cfa0>] (ehci_irq+0x0/0x204 [ehci_hcd]) from [<bf0fd0e8>] > (usb_hcd_irq+0x40/0x98 [usbcore]) > > [<bf0fd0a8>] (usb_hcd_irq+0x0/0x98 [usbcore]) from [<c0094898>] > (handle_IRQ_event+0xa8/0x1d0) > r5:c7b76000 r4:c7b2af60 > > [<c00947f0>] (handle_IRQ_event+0x0/0x1d0) from [<c00967dc>] > (handle_level_irq+0xc8/0x148) > > [<c0096714>] (handle_level_irq+0x0/0x148) from [<c002804c>] > (asm_do_IRQ+0x4c/0x64) > r6:00000038 r5:00000000 r4:0000000e r3:c0096714 > > [<c0028000>] (asm_do_IRQ+0x0/0x64) from [<c02fdf04>] (__irq_usr+0x44/0xa0) > > > Regards > Amit Nagal > > > > On Thu, Oct 21, 2010 at 5:26 PM, Amit Nagal <helloin.amit@xxxxxxxxx> wrote: >> Hi, >> >> Thanx for ur suggestions and time . >> >> As suggested by you ( debugged the code that didn't shut down the USB >> streaming properly ) , >> >> i am finding that at USB disconnect , >> >> even the functions usb_audio_disconnect() && >> snd_usb_audio_disconnect() are not at all getting called . >> >> i need to check the shut down process of USB streaming to find out >> the reason . >> >> if some more pointers to code areas can be shared , it will be nice . >> >> Thanx & Regards >> Amit Nagal >> >> >> >> >> >> >> >> >> >> >> >> >> >> >> On Thu, Oct 21, 2010 at 12:59 PM, Clemens Ladisch <clemens@xxxxxxxxxx> wrote: >>> I wrote: >>>> Amit Nagal wrote: >>>> > Actually since i am using a embedded target , it is not possible to >>>> > use higher kernel version . >>>> >>>> But you could at least test a newer kernel on another machine. >>> >>> Unplugging works for me on current kernels, so it looks as if the >>> problem has been fixed. >>> >>>> > any clues / pointer to functions .changes which can resolve this >>>> > problem in existing linux kernel ? >>> >>> http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=history;f=sound/usb;hb=HEAD >>> >>> >>> Regards, >>> Clemens >>> >> > -- > 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 > -- 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
