USB crashes when replug the device in 11.09.01 kernel 2.6.38 IMX53QSB

[MadhusudhananRa]

Hi Guys,

Anyone faced USB crashes when unplug and plug the usb device again. I get similar to this, and the board doesnt detect the usb again.

This happens on kernel 2.6.38 and 11.09.01 build. Tested on the IMX53QSB

root@freescale ~$ uname -a
Linux freescale 2.6.38-609-ga3167bc #4 PREEMPT Tue Feb 7 13:20:29 IST 2012 armv7l GNU/Linux

root@freescale ~$ usb 1-1: USB disconnect, address 2
irq 14: nobody cared (try booting with the "irqpoll" option)
[<8003b344>] (unwind_backtrace+0x0/0xf0) from [<8008784c>] (__report_bad_irq+0x30/0x8c)
[<8008784c>] (__report_bad_irq+0x30/0x8c) from [<800879f0>] (note_interrupt+0x148/0x1d0)
[<800879f0>] (note_interrupt+0x148/0x1d0) from [<8008882c>] (handle_level_irq+0x108/0x198)
[<8008882c>] (handle_level_irq+0x108/0x198) from [<80031074>] (asm_do_IRQ+0x74/0x98)
[<80031074>] (asm_do_IRQ+0x74/0x98) from [<8003650c>] (__irq_svc+0x4c/0xcc)
Exception stack(0x80503ee0 to 0x80503f28)
3ee0: 80503f28 00004000 80502000 00000103 80502000 00000002 00000000 80590d40
3f00: 00000001 0000000a 80516c6c 00000000 805925d8 80503f28 8005abe0 8005aae4
3f20: 20000113 ffffffff
[<8003650c>] (__irq_svc+0x4c/0xcc) from [<8005aae4>] (__do_softirq+0x40/0xf8)
[<8005aae4>] (__do_softirq+0x40/0xf8) from [<8005abe0>] (irq_exit+0x44/0xa8)
[<8005abe0>] (irq_exit+0x44/0xa8) from [<80031078>] (asm_do_IRQ+0x78/0x98)
[<80031078>] (asm_do_IRQ+0x78/0x98) from [<8003650c>] (__irq_svc+0x4c/0xcc)
Exception stack(0x80503f78 to 0x80503fc0)
3f60:                                                       8050e2ec 00000001
3f80: 00000000 00000000 80502000 805072dc 8054fcc4 805072d4 70000000 412fc085
3fa0: 00000000 00000000 00000003 80503fc0 80037598 8003759c 60000013 ffffffff
[<8003650c>] (__irq_svc+0x4c/0xcc) from [<8003759c>] (default_idle+0x24/0x28)
[<8003759c>] (default_idle+0x24/0x28) from [<80037ae0>] (cpu_idle+0x48/0xa0)
[<80037ae0>] (cpu_idle+0x48/0xa0) from [<80008904>] (start_kernel+0x240/0x284)
[<80008904>] (start_kernel+0x240/0x284) from [<7000803c>] (0x7000803c)
handlers:
[<80270d40>] (ehci_fsl_pre_irq+0x0/0x54)
[<802643e4>] (usb_hcd_irq+0x0/0x90)
Disabling IRQ #14

Regards

Madhu

[FernandoGinezd1]

Madhu,

I was facing this same situation, but I replaced my usb hub and now it's working fine (maybe a hardware problem).

Regards,

Fernando Ginez.