Messages in this thread | | | Date | Tue, 3 Aug 2004 10:11:34 +0200 | Subject | Re: [linux-usb-devel] 2.6.8-rc2-mm2 with usb and input problems | From | Norbert Preining <> |
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Hi David, hi lists!
(Taking Andrew and Dmitry off private email, this concerns only usb I guess)
On Mon, 02 Aug 2004, preining wrote: > > > - USB deadlocking > > > USB is still deadlocky, quite often process hang in D+ state. > > > > So what does alt-sysrq-t show you about those processes?
Ok, I turned off hotplug, started it by hand and found what is making the troubles:
First, it is cups, when trying the backend usb/canon/epson accessing the usb subsystem. So I turned this of.
Then I tried lsusb, which hang, here is what sysrq-t says: lsusb D C0158CDC 0 3942 3849 (NOTLB) d648cef4 00200086 c1621800 c0158cdc 00000000 08088000 d39ce300 00000001 6e50f578 00000028 d427a7f4 df4cf824 00200296 d648c000 d427a650 c02d3f5f df4cf82c 00000001 d427a650 c0118cf9 df4cf82c df4cf82c d687fd40 e08e0798 Call Trace: [<c0158cdc>] link_path_walk+0xa1f/0xd4e [<c02d3f5f>] __down+0x8b/0x116 [<c0118cf9>] default_wake_function+0x0/0xc [<e08e0798>] usbdev_open+0x54/0xfa [usbcore] [<c02d4144>] __down_failed+0x8/0xc [<e08e26ba>] .text.lock.devio+0x5/0xff [usbcore] [<c014ba8b>] filp_open+0x4c/0x4e [<c014c62d>] vfs_read+0xa9/0xf5 [<c014c846>] sys_read+0x38/0x59 [<c0105e4f>] syscall_call+0x7/0xb
Does this help you. lsusb is in D+ state.
SOmething similar happened when I tried to remove usbhid, or anything else related to usb.
Best wishes
Norbert
------------------------------------------------------------------------------- Norbert Preining <preining AT logic DOT at> Technische Universität Wien gpg DSA: 0x09C5B094 fp: 14DF 2E6C 0307 BE6D AD76 A9C0 D2BF 4AA3 09C5 B094 ------------------------------------------------------------------------------- HOGGESTON (n.) The action of overshaking a pair of dice in a cup in the mistaken belief that this will affect the eventual outcome in your favour and not irritate everyone else. --- Douglas Adams, The Meaning of Liff - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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