Greetings, I am facing issues while using Asix's AX88772A USB-2-Ethernet converter on my OMAP3530 based product. It uses TI's 2.6.22.18 PSP release-1.0.2 as its OS. The driver for AX8877A was taken from Asix's website. I am facing kernel crashes when I use the converter on USB OTG port. I am able to get the device detected and also able to assign the ip to the device. But when i repeat the process after plugging-out and plugging-in again and then assigning the ip address , after repeating the process about 9 times, the kernel crashes(when i assign the ip). I tried testing by configuring the musb driver into both OTG and Host only mode. Kernel crashed in both cases. Crash log is attached. ----------------------------------------------------------------------------------------------------------------------------------------------------- eth1: unregister 'asix' usb-musb_hdrc.0-1, ASIX AX88772A USB 2.0 Ethernet musb_stage0_irq 699: CONNECT (a_host) devctl 5d usb 1-1: new high speed USB device using musb_hdrc and address 3 usb 1-1: Product: AX88x72A usb 1-1: Manufacturer: ASIX Elec. Corp. usb 1-1: SerialNumber: 000001 usb 1-1: configuration #1 chosen from 1 choice eth1: register 'asix' at usb-musb_hdrc.0-1, ASIX AX88772A USB 2.0 Ethernet, 00:0e:c6:00:0f:97 [root@OMAP3 /]# ping 192.168.13.1 [root@OMAP3 /]# ifconfig eth1 192.168.13.254 Unable to handle kernel NULL pointer dereference at virtual address 0000001c pgd = c7190000 [0000001c] *pgd=8706b031, *pte=00000000, *ppte=00000000 Internal error: Oops: 17 [#1] Modules linked in: CPU: 0 Not tainted (2.6.22.18-omap3 #1) PC is at musb_start_urb+0x74/0x9b0 LR is at __init_begin+0x3fff8000/0x30 pc : [<c0219ac4>] lr : [<00000000>] psr: 60000093 sp : c706fc18 ip : c059d1ec fp : c706fcb4 r10: 00000020 r9 : 00000000 r8 : c059d000 r7 : c713e120 r6 : c059d1ec r5 : c059d0d8 r4 : c7f9a9e0 r3 : 00000000 r2 : 00000000 r1 : c7f9a9e0 r0 : c059d1ec Flags: nZCv IRQs off FIQs on Mode SVC_32 Segment user Control: 00c5387f Table: 87190018 DAC: 00000015 Process ifconfig (pid: 407, stack limit = 0xc706e2d8) Stack: (0xc706fc18 to 0xc7070000) fc00: 00000020 00000020 fc20: c706fc44 c706fc30 c02180b4 c02174ec c05c0a00 00000000 c706fc64 c03e4464 fc40: c7f9a9e0 00000000 c059d0d8 c713e128 c8808000 00000000 c059d1ec c706fc68 fc60: c0087f24 c00351dc 0000005c c03e4464 c706fc9c c706fc80 c002b04c c00688a4 fc80: ffffffff d8200000 c059d000 c7f9a9e0 c059d0d8 c059d1ec c713e120 c059d000 fca0: 00000000 00000020 c706fcf4 c706fcb8 c021a874 c0219a5c c059d000 c713e120 fcc0: a0000013 00000020 00000020 871cfa20 c05a1034 c059d000 c713e120 c713e128 fce0: 00000020 00000020 c706fdbc c706fcf8 c01f8e34 c021a520 c706fd1c c706fd08 fd00: c02180b4 c02174ec c05c0a00 00000000 c706fd3c c03e4464 0000005c 00000000 fd20: c06753a0 00000098 00000020 00000000 c706fd54 c706fd40 c0087f24 c00351dc fd40: 0000005c c03e4464 c706fd74 c706fd58 c002b04c c00688a4 ffffffff d8200000 fd60: 00000000 c06753a0 c706fdfc c706fd78 c002ba30 c002b00c c713e120 00000020 fd80: 80000300 00000000 c713e120 c713e120 00000000 c713e120 00000040 c05a1000 fda0: 00000002 00000001 00000020 ffff0000 c706fdfc c706fdc0 c01f9304 c01f8680 fdc0: c706fde4 c706fdd0 c01f93cc c0169ff8 c713e120 c71cfa20 c713e120 00000000 fde0: c06753a0 00000098 00000010 00000000 c706fe2c c706fe00 c01ae8b8 c01f904c fe00: 00000000 00000000 c0675458 c0675000 00000002 c06753a0 c0675000 c067330c fe20: c706fe5c c706fe30 c01aec44 c01ae7e8 00000000 00000000 c006f7f4 c0675000 fe40: 00001043 00001002 00000000 be9b29c8 c706fe6c c706fe60 c0280040 c01aeb68 fe60: c706fe84 c706fe70 c02801fc c0280018 c0675000 00001043 c706fea4 c706fe88 fe80: c027b660 c02801e4 c7f9abe0 00000000 c706fec0 c0673300 c706ff0c c706fea8 fea0: c02b76d8 c027b600 00008914 00000000 31687465 00000000 00000000 00000000 fec0: 00001043 fe0da8c0 00000001 00097c86 00001043 fe0da8c0 00000001 00097c86 fee0: 00001002 00008914 00008914 be9b29c8 c05a3260 c002bfe8 c706e000 00000000 ff00: c706ff1c c706ff10 c02b7f4c c02b7434 c706ff3c c706ff20 c027086c c02b7e8c ff20: 00008914 be9b29c8 00000003 c05a3260 c706ff54 c706ff40 c00b36d0 c0270698 ff40: c05a3260 be9b29c8 c706ff7c c706ff58 c00b3974 c00b36a8 000b9040 be9b2e45 ff60: 00000003 be9b29c8 00008914 c05a3260 c706ffa4 c706ff80 c00b39cc c00b3720 ff80: ffffffff 00000000 000a0112 00000004 000001c3 00000036 00000000 c706ffa8 ffa0: c002be40 c00b3998 000a0112 00000004 00000003 00008914 be9b29c8 000a0112 ffc0: 000a0112 00000004 000001c3 00000036 be9b2d5c 000b5ee0 40024000 000b5190 ffe0: 000b5ee0 be9b29a0 0000ea98 401cf01c 20000010 00000003 80002021 80002421 Backtrace: [<c0219a50>] (musb_start_urb+0x0/0x9b0) from [<c021a874>] (musb_urb_enqueue+0x360/0x3a4) [<c021a514>] (musb_urb_enqueue+0x0/0x3a4) from [<c01f8e34>] (usb_hcd_submit_urb+0x7c0/0x89c) [<c01f8674>] (usb_hcd_submit_urb+0x0/0x89c) from [<c01f9304>] (usb_submit_urb+0x2c4/0x310) [<c01f9040>] (usb_submit_urb+0x0/0x310) from [<c01ae8b8>] (ax8817x_write_cmd_async+0xdc/0x11c) [<c01ae7dc>] (ax8817x_write_cmd_async+0x0/0x11c) from [<c01aec44>] (ax8817x_set_multicast+0xe8/0xf0) [<c01aeb5c>] (ax8817x_set_multicast+0x0/0xf0) from [<c0280040>] (__dev_mc_upload+0x34/0x38) r8:be9b29c8 r7:00000000 r6:00001002 r5:00001043 r4:c0675000 [<c028000c>] (__dev_mc_upload+0x0/0x38) from [<c02801fc>] (dev_mc_upload+0x24/0x34) [<c02801d8>] (dev_mc_upload+0x0/0x34) from [<c027b660>] (dev_change_flags+0x6c/0x12c) r5:00001043 r4:c0675000 [<c027b5f4>] (dev_change_flags+0x0/0x12c) from [<c02b76d8>] (devinet_ioctl+0x2b0/0x6ac) r7:c0673300 r6:c706fec0 r5:00000000 r4:c7f9abe0 [<c02b7428>] (devinet_ioctl+0x0/0x6ac) from [<c02b7f4c>] (inet_ioctl+0xcc/0xf0) [<c02b7e80>] (inet_ioctl+0x0/0xf0) from [<c027086c>] (sock_ioctl+0x1e0/0x228) [<c027068c>] (sock_ioctl+0x0/0x228) from [<c00b36d0>] (do_ioctl+0x34/0x78) r7:c05a3260 r6:00000003 r5:be9b29c8 r4:00008914 [<c00b369c>] (do_ioctl+0x0/0x78) from [<c00b3974>] (vfs_ioctl+0x260/0x278) r5:be9b29c8 r4:c05a3260 [<c00b3714>] (vfs_ioctl+0x0/0x278) from [<c00b39cc>] (sys_ioctl+0x40/0x64) r7:c05a3260 r6:00008914 r5:be9b29c8 r4:00000003 [<c00b398c>] (sys_ioctl+0x0/0x64) from [<c002be40>] (ret_fast_syscall+0x0/0x2c) r7:00000036 r6:000001c3 r5:00000004 r4:000a0112 Code: e3a02000 e50bc05c e51b005c e3530000 (e59ec01c) eth1: ax8817x - Link Status is: 0 Kernel panic - not syncing: Fatal exception in interrupt eth1: kevent 4 scheduled eth1: ax8817x - Link Status is: 1 ----------------------------------------------------------------------------------------------------------------------------------------------------- However I am able to the do the same exercise on the USB EHCI port and finding no problem at all. The device is very consistent on the USB EHCI port. I am very much a newbie to linux and need some help. I've done plenty of googling looking for the answer to this but couldn't get it. Has anyone tried this? Any help in this regard will be deeply appreciated. Umesh. -- 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
