> -----Original Message----- > From: linux-omap-owner@xxxxxxxxxxxxxxx [mailto:linux-omap-owner@xxxxxxxxxxxxxxx] On Behalf Of Nathan > Monson > Sent: Wednesday, October 01, 2008 10:06 AM > To: linux-omap@xxxxxxxxxxxxxxx > Subject: USB serial devices not working on linux-omap musb. > > I'm trying to use a USB serial device on a Beagleboard/OMAP-3530 via > the musb port. > > The device is correctly enumerated and can send data, but no data is > received. Other types of USB devices seem to be working great. > > I've tested with two devices: A PL2303 USB to serial cable, and an > Atmel SAM-BA device (basic CDC serial). Both devices work on the > Ubuntu/Intrepid x86 2.6.27 kernel on my PC. > > Additionally, when unplugging the PL2303 I receive an Oops attached below. > > Let me know what I can do to help. > > I'm using the latest linux-omap git plus these four patches: > Crash on detach: http://marc.info/?l=linux-usb&m=122112415222422&w=2 > Iso/cam fix #1: http://marc.info/?l=linux-usb&m=122085130310484&w=2 > Iso/cam fix #2: http://marc.info/?l=linux-usb&m=122085145310628&w=2 > 'Fix something': > http://git.mansr.com/?p=linux-omap;a=commitdiff;h=1e5bc41773bb981b3a89bd762becf98c72be5e4c Monson, This issue seems to be related to BULK multiplexing. I have a patch for this and will submit it soon. Regards, Ajay > Here is the Oops: > > usb 1-1.3: usb_disable_device nuking all URBs > Unable to handle kernel NULL pointer dereference at virtual address 00000014 > pgd = c0004000 > [00000014] *pgd=00000000 > Internal error: Oops: 17 [#1] > Modules linked in: pl2303 usbserial ipv6 uvcvideo compat_ioctl32 > videodev v4l1_compat zd1211rw > CPU: 0 Not tainted (2.6.27-rc7-omap1-05004-g81d2c7d-dirty #8) > PC is at musb_h_disable+0x70/0x118 > LR is at usb_hcd_disable_endpoint+0x24/0x28 > pc : [<c0233618>] lr : [<c021395c>] psr: 20000093 > sp : c78d1e48 ip : c78d1e70 fp : c78d1e6c > r10: c7baa060 r9 : c7baa0ec r8 : a0000013 > r7 : c78add80 r6 : c70c8e5c r5 : 00000000 r4 : c70c8e50 > r3 : 00000000 r2 : 00000083 r1 : c70c8e50 r0 : c7852120 > Flags: nzCv IRQs off FIQs on Mode SVC_32 ISA ARM Segment kernel > Control: 00c5387f Table: 87114018 DAC: 00000017 > Process khubd (pid: 104, stack limit = 0xc78d02e8) > Stack: (0xc78d1e48 to 0xc78d2000) > 1e40: 00000000 c70c8e50 c7baa000 c7baa000 c7baa0ec c7baa060 > 1e60: c78d1e7c c78d1e70 c021395c c02335b4 c78d1e94 c78d1e80 c021665c c0213944 > 1e80: 00000004 c7baa07c c78d1ec4 c78d1e98 c02166f0 c0216608 c0401fc0 c78d1ea8 > 1ea0: c03367a0 0000001f c7baa07c c7baa000 c78daa4c c7baa10c c78d1ef4 c78d1ec8 > 1ec0: c0211740 c021668c c78d1ee4 c7baa000 00000064 c044344c c78d0000 00000003 > 1ee0: c7be9000 00000100 c78d1fd4 c78d1ef8 c0212bd4 c0211684 00000064 00000064 > 1f00: 00000100 00000000 000003e8 c0193b74 c004ed18 00000003 c78daa4c c7852014 > 1f20: c7be9044 c7bdb6ac c7bdb620 c7bdb600 c78da800 c7be9048 c7be904c c78da90c > 1f40: c7be9008 00000100 c78da800 00000000 00000000 c7bdb6ac 00000000 c7bdb620 > 1f60: c78da800 c7be909c 00000001 00000000 00000002 000000e0 c7852000 c7817404 > 1f80: c7be9002 c78da808 00000000 c7822100 c0069dc4 c78d1f94 c78d1f94 00000100 > 1fa0: 01000001 c78d0000 c78d1fd4 c78d0000 00000000 c02124f8 c045657c 00000000 > 1fc0: 00000000 00000000 c78d1ff4 c78d1fd8 c00698dc c0212504 00000000 00000000 > 1fe0: 00000000 00000000 00000000 c78d1ff8 c00587e0 c0069890 007fef00 2376ef8a > Backtrace: > [<c02335a8>] (musb_h_disable+0x0/0x118) from [<c021395c>] > (usb_hcd_disable_endpoint+0x24/0x28) > r8:c7baa060 r7:c7baa0ec r6:c7baa000 r5:c7baa000 r4:c70c8e50 > [<c0213938>] (usb_hcd_disable_endpoint+0x0/0x28) from [<c021665c>] > (usb_disable_endpoint+0x60/0x84) > [<c02165fc>] (usb_disable_endpoint+0x0/0x84) from [<c02166f0>] > (usb_disable_device+0x70/0x198) > r5:c7baa07c r4:00000004 > [<c0216680>] (usb_disable_device+0x0/0x198) from [<c0211740>] > (usb_disconnect+0xc8/0x150) > r8:c7baa10c r7:c78daa4c r6:c7baa000 r5:c7baa07c r4:0000001f > [<c0211678>] (usb_disconnect+0x0/0x150) from [<c0212bd4>] > (hub_thread+0x6dc/0x12b0) > [<c02124f8>] (hub_thread+0x0/0x12b0) from [<c00698dc>] (kthread+0x58/0x8c) > [<c0069884>] (kthread+0x0/0x8c) from [<c00587e0>] (do_exit+0x0/0x774) > r7:00000000 r6:00000000 r5:00000000 r4:00000000 > Code: 0a00001d e3a05000 e1a03005 e284600c (e5b32014) > ---[ end trace 32560ec91a581d5d ]--- > > - 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 -- 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
