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Re: My USB bulk device driver hangs and requires a restart of machine? Experts and Guru's please comment!!!!.



If I add Sleep(1) at the important points, like opening device, opening interface, claiming interface etc, Will it serve the purpose 100%  ???
 
 
Below is the log that apple generates upon the restart. I could not get anything out of this log, but may be some experts over this newgroup and gather some useful information out of it.
////////////////////////////// //

Unresolved kernel trap(cpu 1): 0x300 - Data access DAR=0x0000000000000000 PC=0x00000000002B7A58

Latest crash info for cpu 1:

   Exception state (sv=0x1C178000)

      PC=0x002B7A58; MSR=0x00009030; DAR=0x00000000; DSISR=0x40000000; LR=0x002B8558; R1=0x0832BBD0; XCP=0x0000000C (0x300 - Data access)

      Backtrace:

0x0000009C 0x002B8558 0x002BB0C8 0x211EA6AC 0x002E9B90 0x0008BFC8

         0x000291C0 0x000233AC 0x000AC02C 0x00000000

      Kernel loadable modules in backtrace (with dependencies):

         com.apple.iokit.KLog(1.0.6)@0x211e9000

Proceeding back via exception chain:

   Exception state (sv=0x1C178000)

      previously dumped as "Latest" state. skipping...

   Exception state (sv=0x1C159A00)

      PC=0x9000B1E8; MSR=0x0200F030; DAR=0x02F28000; DSISR=0x42000000; LR=0x9000B13C; R1=0xF0080460; XCP=0x00000030 (0xC00 - System call)

 

Kernel version:

Darwin Kernel Version 8.5.0: Sun Jan 22 10:38:46 PST 2006; root:xnu-792.6.61.obj~1/RELEASE_PPC

panic(cpu 1 caller 0xFFFF0003): 0x300 - Data access

Latest stack backtrace for cpu 1:

      Backtrace:

         0x00095718 0x00095C30 0x0002683C 0x000A8384 0x000ABD00

Proceeding back via exception chain:

   Exception state (sv=0x1C178000)

      PC=0x002B7A58; MSR=0x00009030; DAR=0x00000000; DSISR=0x40000000; LR=0x002B8558; R1=0x0832BBD0; XCP=0x0000000C (0x300 - Data access)

      Backtrace:

0x0000009C 0x002B8558 0x002BB0C8 0x211EA6AC 0x002E9B90 0x0008BFC8

         0x000291C0 0x000233AC 0x000AC02C 0x00000000

      Kernel loadable modules in backtrace (with dependencies):

         com.apple.iokit.KLog(1.0.6)@0x211e9000

   Exception state (sv=0x1C159A00)

      PC=0x9000B1E8; MSR=0x0200F030; DAR=0x02F28000; DSISR=0x42000000; LR=0x9000B13C; R1=0xF0080460; XCP=0x00000030 (0xC00 - System call)

 

Kernel version:

Darwin Kernel Version 8.5.0: Sun Jan 22 10:38:46 PST 2006; root:xnu-792.6.61.obj~1/RELEASE_PPC

////////////////////////////////
 All suggestions/ comments/ pointers/ references are most welcome. Awaiting your replies,
Rohit Dhamija
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