Hi Alistair and Gavin, The patch from Alistair fixes my issue. Thanks heaps!
Alistair, are you right to post that formally? Regards, Daniel On Tue, 2015-07-28 at 11:28 +1000, Gavin Shan wrote: > On Tue, Jul 28, 2015 at 11:14:51AM +1000, Alistair Popple wrote: > >Hi Daniel, > > > >I see the problem - pnv_eeh_next_error() re-enables the interrupt but it > >gets > >called from a loop if there are more outstanding events to process. The most > >obvious solution would be to do this check before enabling interrupts: > > > > if (ret == EEH_NEXT_ERR_NONE && eeh_enabled()) > > > >instead of: > > > > if (eeh_enabled()) > > > >This should work fine so long as pnv_eeh_next_error() is called continuously > >until is returns either EEH_NEXT_ERR_NONE or another value which signals > >that > >pnv_eeh_next_error() should never be called again. As far as I can tell this > >looks to be true (perhaps Gavin can confirm?) > > > > Yeah, I confirmed. The way that Alistair fixes the issue is simple and more > precise. Please try his fix and ignore the one I sent couple of minutes > before. > > Thanks, > Gavin > > >Would you mind trying the below patch and seeing if it fixes the problem? > >Thanks! > > > >-- >8 -- > >>From 6eeed1d6dd25e8cf6bfe3423dc50ff855d1cbc42 Mon Sep 17 00:00:00 2001 > >From: Alistair Popple <alist...@popple.id.au> > > > >--- > > arch/powerpc/platforms/powernv/eeh-powernv.c | 2 +- > > 1 file changed, 1 insertion(+), 1 deletion(-) > > > >diff --git a/arch/powerpc/platforms/powernv/eeh-powernv.c > >b/arch/powerpc/platforms/powernv/eeh-powernv.c > >index ca825ec..ff41c03 100644 > >--- a/arch/powerpc/platforms/powernv/eeh-powernv.c > >+++ b/arch/powerpc/platforms/powernv/eeh-powernv.c > >@@ -1478,7 +1478,7 @@ static int pnv_eeh_next_error(struct eeh_pe **pe) > > } > > > > /* Unmask the event */ > >- if (eeh_enabled()) > >+ if (ret == EEH_NEXT_ERR_NONE && eeh_enabled()) > > enable_irq(eeh_event_irq); > > > > return ret; > >-- > >1.8.3.2 > > > > > -- Regards, Daniel
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