Re: [PATCH] rest of works for migration to GENERIC_TIME

[Sergei Shtylyov <sshtylyov@ru.mvista.com>]

Hello.

Atsushi Nemoto wrote:

>>    The whole idea of using such timer as TX39 has for both
>>generating the interrupts and as a clocksource was wrong, I'm
>>afraid.  You only can use a something similar to the MIPS counter
>>which doesn't ever get auto-reloaded for both purposes at once.

> Sure, we can do this improvement and it would be a right direction.
> But for now I just want to get previous facility back again.  And
> anyway I think someone who still have interest on this platform should
> make it buildable and bootable before further improvement ;-)

    Frankly, I'm sowewhat doubtful about TX39 timer code being sane at all 
since it doesn't clear the timer interrupt -- it clearly should override 
mips_timer_ack() and it doesn't! OTOH, it was working in 2.4 without this 
somehow... I'm puzzled since with the interrupt not being cleared anywhere 
jmr3927_do_gettimeoffset() should be returning complete crap once the frist 
interupt happens, i.e. only be jiffy-precise. Why it doesn't get the interrupt 
flood I don't know or contrarywise, no further interrupts after the first one, 
I don't know... :-/

> ---
> Atsushi Nemoto

WBR, Sergei