Subject: Re: XSysAce driver cant mount DOS part

From: urwithsudheer <[email-masked]>
Date: Fri, 13 Jul 2007 14:55:50 +0530

Hi

Robertson, Joseph M. wrote:
>
> Hi all,
>
> I've been workig with this for a while but have made no progress.
> Today I got the latest XSysAce patch for kernel 2.6.17.1 and applied 
> it to get clean code. 
> I inherited the previous code from another developer.
>
Can you send the link to xsysace driver source code from where you obtained.

Thanks
Sudheer

>
> My problem is that mounting the DOS partition always fails in a short 
> time with a kernel oops.
>
> ECAU-9999:# Oops: kernel access of bad area, sig: 11 
> [#1]                      
> PREEMPT                                                                        
> NIP: C00701C8 LR: C0070C18 CTR: 
> 00000000                                       
> REGS: c0391dd0 TRAP: 0300   Not tainted  
> (2.6.17.1)                            
> MSR: 00021030 <ME,IR,DR>  CR: 22028082  XER: 
> 0000000B                          
> DAR: 00000000, DSISR: 
> 00800000                                                 
> TASK = c0373030[4] 'events/0' THREAD: 
> c0390000                                 
> GPR00: 00000080 C0391E80 C0373030 C02CAC00 C0E03000 C0E03154 00000000 
> C02CAC00 
> GPR08: 00200200 00000000 00100100 00000000 00051A4B FFFFDE60 03BD4900 
> 007FFF3B 
> GPR16: 00400000 00000001 FFFFFFFF 03BCDC58 00000000 007FFF00 00000002 
> C0280000 
> GPR24: C0363A10 0000000B 00000000 00000000 00000000 C02CAC00 C035ED20 
> C0E03000 
> NIP [C00701C8] 
> free_block+0x8c/0x138                                           
> LR [C0070C18] 
> drain_array+0xb8/0x124                                           
> Call Trace:                                  
>
> The setup:
> My own build system.
> Kernel 2.6.17.1 with lots of xilinx stuff, eth, i2c, xsysace.  
> Crosscompiled for PPC405.
> Latest, clean XSysAce code.  mods:  major hardcoded to = 125.  Polled 
> mode.
> CF:  3 partitions,
> 1:  DOS FAT16
> 2:  Ext2  main
> 3:  Ext2  rescue
>
> This build boots up fine, mounts a ext2 as root fine.  I can also 
> mount the rescue partition with no problems.
>
> Does anyone have any pointers of where I should look for problems?
>
> My next step is to go and set it up for interrupt service and see if 
> that changes anything.
>
> Thanks,
>
> Joe Robertson
> [email-masked]
>
>
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