Messages in this thread | | | Subject | Re: Regression: radeonfb: No synchronisation on CRT with linux-2.6.13-rc5 | From | Benjamin Herrenschmidt <> | Date | Sun, 07 Aug 2005 09:51:07 +0200 |
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On Fri, 2005-08-05 at 19:38 +0200, Bodo Eggert wrote: > On Fri, 5 Aug 2005, Benjamin Herrenschmidt wrote: > > > On Fri, 2005-08-05 at 00:03 +0200, Bodo Eggert wrote: > > > My CRT is out of sync after radeonfb from 2.6.13-rc5 is initialized. > > > 2.6.12 does not show this behaviour. > > > > I'm out of town at the moment, could you maybe diff radeonfb between > > working & non-working and CC me the diff ? I don't have my work stuff at > > hand not my kernel images so... > > There were no changes in radeonfb.c, but I could trace to to > CONFIG_PREEMPT. With _NONE, it works as expected.
Ah ! Interesting... I don't see why PREEMPT would affect radeonfb though ... Can you try something like wrapper radeon_write_mode() with preempt_disable()/preempt_enable() and tell me if it makes a difference ?
Ben.
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