Re: [PATCH 2/4 v8] i.MX31: Image Processing Unit DMA and IRQ drivers

[Guennadi Liakhovetski <g.liakhovetski@gmx.de>]

On Fri, 23 Jan 2009, Valentin Longchamp wrote:

> Well no miracle is taking place (And I have checked, the kernel I am
> running is the correct one according to the build date tag with uname).
> For me the initcalls are:
> 
> c0019390 <__initcall_misc_init4>:
> c0019394 <__initcall_ipu_init4>:
> c0019398 <__initcall_proto_init4>:
> 
> (Not exactly the same addresses as before because I add some pr_debug
> calls for debug). But none of them are called. And all of them are
> subsys_initcall. Do I have to enable something in my configuration so
> that these initcall actually get called ?

Let's say, this is the first time that I run into a situation when some 
initcalls do not get called, and I never bothered setting any special 
config variable for that, and it would surprise me a _lot_ if such a 
variable existed... What kernel version is this?

> However, they all have the same "look" so to say: no real ARM assembly
> instruction but only addresses as Russel pointed it before:
> 
> > c0019390 <__initcall_misc_init4>:
> > c0019390:       c001349c        .word   0xc001349c
> > 
> > c0019394 <__initcall_ipu_init4>:
> > c0019394:       c0014258        .word   0xc0014258
> > 
> > c0019398 <__initcall_proto_init4>:
> > c0019398:       c00143e4        .word   0xc00143e4
> 
> This may be the reason why these initcall are not actually called:
> Guennadi's ones had a real ARM assembly instruction.

No, they are just addresses.

> To solve all my
> problems I need to understand why my subsys_initcall do not get called.

Good luck... Try the same with older kernels - even without ipu, just your 
regular kernel, maybe bisect since when your initcalls do not get called? 
Or compare to some running kernel's configuration...

Cheers
Guennadi
---
Guennadi Liakhovetski, Ph.D.
Freelance Open-Source Software Developer

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