USB OHCI 드라이버 활성화했을때 나오는 에러 잡기

USB Core만 활성화 시켰을 때는 문제가 없었으나,,

HID를 사용하기 위해 OHCI 드라이버를 enable 하자 아래와 같은 메지지가 한참 나오고 나서야

USB 장치가 동작하였다. 그것도 아주 느린 반응 속도로;;;

다시 뺐다가 끼우면 정상적으로 동작하는 경우로써;;

에러 처음 문장에서 나오듯이 IRQ 문제인듯;;;

======================================================================================
irq26: nobody cared

Pid: 0, comm:              swapper
CPU: 0
PC is at default_idle+0x84/0x94
LR is at default_idle+0x78/0x94
pc : [<c0044bd0>]    lr : [<c0044bc4>]    Not tainted
sp : c0255f98  ip : c0255f98  fp : c0255fa4
r10: 3001e46c  r9 : 41129200  r8 : 3001e49c
r7 : c02c6854  r6 : c0257d1c  r5 : c0254000  r4 : c0044b4c
r3 : 60000013  r2 : f0500000  r1 : 00000032  r0 : c003c1e0
Flags: nZCv  IRQs on  FIQs on  Mode SVC_32  Segment kernel
Control: C000717F  Table: 32B90000  DAC: 00000017
[<c00449d0>] (show_regs+0x0/0x50) from [<c0043da0>] (report_bad_irq+0x6c/0xcc)
 r4 = C0255F50
[<c0043d34>] (report_bad_irq+0x0/0xcc) from [<c0043e84>] (do_level_IRQ+0x84/0xc0)
 r5 = 0000001A  r4 = C02A7428
[<c0043e00>] (do_level_IRQ+0x0/0xc0) from [<c00440b0>] (asm_do_IRQ+0x4c/0x108)
 r6 = C0255F50  r5 = F0000000  r4 = FFFFFFFF
[<c0044064>] (asm_do_IRQ+0x0/0x108) from [<c00427c4>] (__irq_svc+0x24/0x60)
 r6 = 00000001  r5 = F0000000  r4 = FFFFFFFF
[<c0044b4c>] (default_idle+0x0/0x94) from [<c00449b4>] (cpu_idle+0x3c/0x58)
[<c0044978>] (cpu_idle+0x0/0x58) from [<c0042260>] (rest_init+0x24/0x2c)
 r5 = C02A6A9C  r4 = C02B1500
[<c004223c>] (rest_init+0x0/0x2c) from [<c0008998>] (start_kernel+0x168/0x1b4)
[<c0008830>] (start_kernel+0x0/0x1b4) from [<30008094>] (0x30008094)
[<c0047ae8>] (dump_stack+0x0/0x14) from [<c0043da4>] (report_bad_irq+0x70/0xcc)
[<c0043d34>] (report_bad_irq+0x0/0xcc) from [<c0043e84>] (do_level_IRQ+0x84/0xc0)
 r5 = 0000001A  r4 = C02A7428
[<c0043e00>] (do_level_IRQ+0x0/0xc0) from [<c00440b0>] (asm_do_IRQ+0x4c/0x108)
 r6 = C0255F50  r5 = F0000000  r4 = FFFFFFFF
[<c0044064>] (asm_do_IRQ+0x0/0x108) from [<c00427c4>] (__irq_svc+0x24/0x60)
 r6 = 00000001  r5 = F0000000  r4 = FFFFFFFF
[<c0044b4c>] (default_idle+0x0/0x94) from [<c00449b4>] (cpu_idle+0x3c/0x58)
[<c0044978>] (cpu_idle+0x0/0x58) from [<c0042260>] (rest_init+0x24/0x2c)
 r5 = C02A6A9C  r4 = C02B1500
[<c004223c>] (rest_init+0x0/0x2c) from [<c0008998>] (start_kernel+0x168/0x1b4)
[<c0008830>] (start_kernel+0x0/0x1b4) from [<30008094>] (0x30008094)
handlers:
[<c0186904>] (usb_hcd_irq+0x0/0x90)
irq26: nobody cared

Pid: 0, comm:              swapper
CPU: 0
PC is at __do_irq+0x34/0x8c
LR is at do_level_IRQ+0x6c/0xc0
pc : [<c0043bb0>]    lr : [<c0043e6c>]    Not tainted
sp : c0255e28  ip : c0255e50  fp : c0255e4c
r10: 3001e46c  r9 : 41129200  r8 : c0255eb0
r7 : 00000030  r6 : c0255eb0  r5 : 00000030  r4 : c03cfea0
r3 : 40000013  r2 : c0255eb0  r1 : c03cfea0  r0 : 00000030
Flags: nZcv  IRQs on  FIQs on  Mode SVC_32  Segment kernel
Control: C000717F  Table: 32B90000  DAC: 00000017
[<c00449d0>] (show_regs+0x0/0x50) from [<c0043da0>] (report_bad_irq+0x6c/0xcc)
 r4 = C0255DE0
[<c0043d34>] (report_bad_irq+0x0/0xcc) from [<c0043e84>] (do_level_IRQ+0x84/0xc0)
 r5 = 0000001A  r4 = C02A7428
[<c0043e00>] (do_level_IRQ+0x0/0xc0) from [<c00440b0>] (asm_do_IRQ+0x4c/0x108)
 r6 = C0255DE0  r5 = F0000000  r4 = FFFFFFFF
[<c0044064>] (asm_do_IRQ+0x0/0x108) from [<c00427c4>] (__irq_svc+0x24/0x60)
 r6 = 00000001  r5 = F0000000  r4 = FFFFFFFF
[<c0043b7c>] (__do_irq+0x0/0x8c) from [<c0043e6c>] (do_level_IRQ+0x6c/0xc0)
 r8 = 3001E49C  r7 = C02C6854  r6 = C0255EB0  r5 = 00000030
 r4 = C02A78A0
[<c0043e00>] (do_level_IRQ+0x0/0xc0) from [<c004ce40>] (s3c_irq_demux_subirq+0x5c/0x68)
 r6 = C0255EB0  r5 = F0000000  r4 = C0255EB0
[<c004cde4>] (s3c_irq_demux_subirq+0x0/0x68) from [<c00440b0>] (asm_do_IRQ+0x4c/0x108)
 r4 = FFFFFFFF
[<c0044064>] (asm_do_IRQ+0x0/0x108) from [<c00427c4>] (__irq_svc+0x24/0x60)
 r6 = 00000001  r5 = F0000000  r4 = FFFFFFFF
[<c00579f8>] (__do_softirq+0x0/0xe0) from [<c0057d60>] (irq_exit+0x44/0x4c)
 r6 = C0255F50  r5 = F0000000  r4 = FFFFFFFF
[<c0057d1c>] (irq_exit+0x0/0x4c) from [<c0044154>] (asm_do_IRQ+0xf0/0x108)
[<c0044064>] (asm_do_IRQ+0x0/0x108) from [<c00427c4>] (__irq_svc+0x24/0x60)
 r6 = 00000001  r5 = F0000000  r4 = FFFFFFFF
[<c0044b4c>] (default_idle+0x0/0x94) from [<c00449b4>] (cpu_idle+0x3c/0x58)
[<c0044978>] (cpu_idle+0x0/0x58) from [<c0042260>] (rest_init+0x24/0x2c)
 r5 = C02A6A9C  r4 = C02B1500
[<c004223c>] (rest_init+0x0/0x2c) from [<c0008998>] (start_kernel+0x168/0x1b4)
[<c0008830>] (start_kernel+0x0/0x1b4) from [<30008094>] (0x30008094)
[<c0047ae8>] (dump_stack+0x0/0x14) from [<c0043da4>] (report_bad_irq+0x70/0xcc)
[<c0043d34>] (report_bad_irq+0x0/0xcc) from [<c0043e84>] (do_level_IRQ+0x84/0xc0)
 r5 = 0000001A  r4 = C02A7428
[<c0043e00>] (do_level_IRQ+0x0/0xc0) from [<c00440b0>] (asm_do_IRQ+0x4c/0x108)
 r6 = C0255DE0  r5 = F0000000  r4 = FFFFFFFF
[<c0044064>] (asm_do_IRQ+0x0/0x108) from [<c00427c4>] (__irq_svc+0x24/0x60)
 r6 = 00000001  r5 = F0000000  r4 = FFFFFFFF
[<c0043b7c>] (__do_irq+0x0/0x8c) from [<c0043e6c>] (do_level_IRQ+0x6c/0xc0)
 r8 = 3001E49C  r7 = C02C6854  r6 = C0255EB0  r5 = 00000030
 r4 = C02A78A0
[<c0043e00>] (do_level_IRQ+0x0/0xc0) from [<c004ce40>] (s3c_irq_demux_subirq+0x5c/0x68)
 r6 = C0255EB0  r5 = F0000000  r4 = C0255EB0
[<c004cde4>] (s3c_irq_demux_subirq+0x0/0x68) from [<c00440b0>] (asm_do_IRQ+0x4c/0x108)
 r4 = FFFFFFFF
[<c0044064>] (asm_do_IRQ+0x0/0x108) from [<c00427c4>] (__irq_svc+0x24/0x60)
 r6 = 00000001  r5 = F0000000  r4 = FFFFFFFF
[<c00579f8>] (__do_softirq+0x0/0xe0) from [<c0057d60>] (irq_exit+0x44/0x4c)
 r6 = C0255F50  r5 = F0000000  r4 = FFFFFFFF
[<c0057d1c>] (irq_exit+0x0/0x4c) from [<c0044154>] (asm_do_IRQ+0xf0/0x108)
[<c0044064>] (asm_do_IRQ+0x0/0x108) from [<c00427c4>] (__irq_svc+0x24/0x60)
 r6 = 00000001  r5 = F0000000  r4 = FFFFFFFF
[<c0044b4c>] (default_idle+0x0/0x94) from [<c00449b4>] (cpu_idle+0x3c/0x58)
[<c0044978>] (cpu_idle+0x0/0x58) from [<c0042260>] (rest_init+0x24/0x2c)
 r5 = C02A6A9C  r4 = C02B1500
[<c004223c>] (rest_init+0x0/0x2c) from [<c0008998>] (start_kernel+0x168/0x1b4)
[<c0008830>] (start_kernel+0x0/0x1b4) from [<30008094>] (0x30008094)
handlers:
[<c0186904>] (usb_hcd_irq+0x0/0x90)

==========================================================================================

커널을 자세히 알지 못하기 때문에 ㅠ.ㅠ

땜빵하였다 -_-;; 일단 되게 만드는게 우선이니깐 ^^;;

File : drivers/usb/core/hcd.c  (2.6.16기준 1655 Line)

if (hcd->driver->irq (hcd, r) == IRQ_NONE)
  //return IRQ_NONE; original
  return IRQ_HANDLED;

리턴 값을 IRQ_HANDLED 로 주면 된다.