[pandaboard] omap-aes L3 standard error

[pandaboard] omap-aes L3 standard error

[Tobias Jakobi]

Hello,

here a newly introduced one:
https://bugzilla.kernel.org/show_bug.cgi?id=66441

Greets,
Tobias

Re: [pandaboard] omap-aes L3 standard error

[Nishanth Menon]

On 12/03/2013 03:05 PM, Tobias Jakobi wrote:
> Hello,
> 
> here a newly introduced one:
> https://bugzilla.kernel.org/show_bug.cgi?id=66441

[1] solves the issue

However, digging further, the root of the crash starts here:
"platform 4b501000.aes: Cannot lookup hwmod 'aes'"
with this, the following happens:
a) omap_device does not register a pm_domain (since it cannot find
hwmod entry).
b) driver does not know about (a), does a pm_runtime_get_sync which
never fails
c) tries to read the revision register (as part of probe) without clock.
generates the issue mentioned above.


Now, there are three issues here:
a) hwmod entries are not present -> this is addressed in [1]
b) omap_device pm_domain is not handled - fixed in [2]
c) aes driver needs to handle error case when pm_runtime_get_sync
fails. addressed in [3].

[1] http://marc.info/?l=linux-kernel&m=138541593010221&w=2 +
http://marc.info/?l=linux-kernel&m=138541603810300&w=2

[2] https://patchwork.kernel.org/patch/3280531/
[3] https://patchwork.kernel.org/patch/3280571/

-- 
Regards,
Nishanth Menon