Re: [ANNOUNCE] 3.12.0-rt2

[Sebastian Andrzej Siewior <bigeasy@linutronix.de>]

* Sami Pietikäinen | 2013-11-19 07:38:27 [+0000]:

>> - tried to fix AT91's "already-free IRQ" and highres problem. Michael
>>   Langfinge reported it initially and Sami Pietikäinen sent a patch for
>>   the "already-free IRQ" problem. Based on another patch I looked at the
>>   highres patch and tried to fix it. As I don't have the hardware, some
>>   feedback would be nice.
>
>I did a quick test run with the 3.12.0-rt2 kernel. There are no "Trying to free already free IRQ 1" warnings anymore so that issue seems to be fixed. However, the system still hangs.
>
>CONFIG_HIGH_RES_TIMERS=y
>CONFIG_ATMEL_TCB_CLKSRC=y
>Hangs (or resets if the WD is enabled)
>
>CONFIG_HIGH_RES_TIMERS=y
>CONFIG_ATMEL_TCB_CLKSRC=n
>Boots ok.
>
>Now the kernel boots with the CONFIG_HIGH_RES_TIMERS enabled, but hangs when I enable the TCB clock source.
>Michael, if you have spare time, maybe you could also test these configs to see if you have similar behavior.
Okay. So in the working variant with TCB=n, do you have high res timers
available?

>BR,
>Sami Pietikäinen

Sebastian
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