* Too many spurious interrupts on mpc82xx with linux-2.4.35.5
@ 2007-07-04 5:51 Matvejchikov Ilya
[not found] ` <4728C35B.7000709@chello.nl>
0 siblings, 1 reply; 2+ messages in thread
From: Matvejchikov Ilya @ 2007-07-04 5:51 UTC (permalink / raw)
To: linuxppc-embedded
Hi all!
If you still have this problem, try this patch. It helps :)
Signed-off-by : Matvejchikov Ilya <matvejchikov@gmail.com>
---
diff -purN linux-2.4.34.5-vanilla/arch/ppc/kernel/cpm2_pic.c
linux-2.4.34.5/arch/ppc/kernel/cpm2_pic.c
--- linux-2.4.34.5-vanilla/arch/ppc/kernel/cpm2_pic.c 2007-06-06
23:20:53.000000000 +0400
+++ linux-2.4.34.5/arch/ppc/kernel/cpm2_pic.c 2007-06-28
12:17:42.000000000 +0400
@@ -79,6 +79,12 @@ static void cpm2_mask_and_ack(unsigned i
ppc_cached_irq_mask[word] &= ~(1 << (31 - bit));
simr[word] = ppc_cached_irq_mask[word];
sipnr[word] = 1 << (31 - bit);
+
+ /*
+ * Work around large numbers of spurious IRQs on PowerPC 82xx
+ * systems.
+ */
+ mb();
}
static void cpm2_end_irq(unsigned int irq_nr)
^ permalink raw reply [flat|nested] 2+ messages in thread[parent not found: <4728C35B.7000709@chello.nl>]
* Re: Too many spurious interrupts on mpc82xx with linux-2.4.35.5 [not found] ` <4728C35B.7000709@chello.nl> @ 2007-10-31 19:49 ` Matvejchikov Ilya 0 siblings, 0 replies; 2+ messages in thread From: Matvejchikov Ilya @ 2007-10-31 19:49 UTC (permalink / raw) To: Theo Gjaltema; +Cc: linuxppc-embedded I'm glad to hear it! :) 2007/10/31, Theo Gjaltema <gjalt007@chello.nl>: > Matvejchikov, > > I've tried this on 2.4.25 kernel from the denx eldk3.1.1 distribution > and it works here fine as well. > Thanks, > Theo. > > Matvejchikov Ilya schreef: > > Hi all! > > > > If you still have this problem, try this patch. It helps :) > > > > Signed-off-by : Matvejchikov Ilya <matvejchikov@gmail.com> > > --- > > diff -purN linux-2.4.34.5-vanilla/arch/ppc/kernel/cpm2_pic.c > > linux-2.4.34.5/arch/ppc/kernel/cpm2_pic.c > > --- linux-2.4.34.5-vanilla/arch/ppc/kernel/cpm2_pic.c 2007-06-06 > > 23:20:53.000000000 +0400 > > +++ linux-2.4.34.5/arch/ppc/kernel/cpm2_pic.c 2007-06-28 > > 12:17:42.000000000 +0400 > > @@ -79,6 +79,12 @@ static void cpm2_mask_and_ack(unsigned i > > ppc_cached_irq_mask[word] &= ~(1 << (31 - bit)); > > simr[word] = ppc_cached_irq_mask[word]; > > sipnr[word] = 1 << (31 - bit); > > + > > + /* > > + * Work around large numbers of spurious IRQs on PowerPC 82xx > > + * systems. > > + */ > > + mb(); > > } > > > > static void cpm2_end_irq(unsigned int irq_nr) > > _______________________________________________ > > Linuxppc-embedded mailing list > > Linuxppc-embedded@ozlabs.org > > https://ozlabs.org/mailman/listinfo/linuxppc-embedded > > > > > > ^ permalink raw reply [flat|nested] 2+ messages in thread
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2007-07-04 5:51 Too many spurious interrupts on mpc82xx with linux-2.4.35.5 Matvejchikov Ilya
[not found] ` <4728C35B.7000709@chello.nl>
2007-10-31 19:49 ` Matvejchikov Ilya
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