lkml.org 
[lkml]   [2015]   [Sep]   [12]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
From
SubjectRe: [PATCH 2/3] net: irda: pxaficp_ir: convert to readl and writel
Date
Petr Cvek <petr.cvek@tul.cz> writes:

>>>> And it is true I have not tested the rootfs special case, where drivers are not
>>>> yet initialized (and more specifically gpio and interrupt chip). Your backtrace
>>>> should tell me if you fall into this category of issues ... but I digress, this
>>>> has no link with pxaficp.
>>>
>>> Should I start new thread? (same bug can be present in the FICP too)
>> Yes, this pxamci bothers me, it deserves a thread.
>
> Will start soon.
And I think I see your problem now :
(a) there is a regression from the commit 8c8fe97b2b8a, for which the fix is
here: https://lkml.org/lkml/2015/9/6/112
(b) for gpio expanders, another fix is here :
https://lkml.org/lkml/2015/9/12/62

The regression is on dmaengine, that's where the thread belongs I think, at
least if that fixes your issue.

>>> but STIER is not just an offset, but full register address:
>>>
>>> __REG(0x40700004)
>>>
>>> So the definition should be changed, unless there is another patch I did not
>>> received (in that case, send me full patchset again please) :-).
>> Agreed, this is a bug in this patch. With this fix, is the pxaficp working or do
>> you need a bit more time to experiment ?
>
> I have tried with a nasty hack (use only lower part of address, it should equal with reg offset):
> #undef __REG
> -#define __REG(x) (x)
> +#define __REG(x) (x & 0xffff)
>
> and it seems to work. The module inits and I am able to see IrDA traffic and
> ping other machine. FIR mode (mostly impacted by DMA) is still untested as
> magician unfortunately supports only SIR mode.
Okay, I'll add a fix in the next iteration, thanks for finding this.

Cheers.

--
Robert


\
 
 \ /
  Last update: 2015-09-12 13:21    [W:0.046 / U:6.588 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site