From: Josh Boyer <jwboyer@linux.vnet.ibm.com>
To: paulus@samba.org
Cc: linuxppc-dev@ozlabs.org
Subject: [PATCH] powerpc: fix spurious vectors on weird MPIC
Date: Mon, 30 Apr 2007 15:38:11 -0500 [thread overview]
Message-ID: <1177965491.3026.47.camel@zod.rchland.ibm.com> (raw)
The weird TSI 10x MPIC needs an EOI after getting a spurious vector. This
patch uses the existing MPIC_SPV_EOI flag to fix this issue.
Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
---
arch/powerpc/sysdev/mpic.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
--- linux-2.6.orig/arch/powerpc/sysdev/mpic.c
+++ linux-2.6/arch/powerpc/sysdev/mpic.c
@@ -1333,8 +1333,11 @@ unsigned int mpic_get_one_irq(struct mpi
#ifdef DEBUG_LOW
DBG("%s: get_one_irq(): %d\n", mpic->name, src);
#endif
- if (unlikely(src == mpic->spurious_vec))
+ if (unlikely(src == mpic->spurious_vec)) {
+ if (mpic->flags & MPIC_SPV_EOI)
+ mpic_eoi(mpic);
return NO_IRQ;
+ }
return irq_linear_revmap(mpic->irqhost, src);
}
next reply other threads:[~2007-04-30 20:42 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-04-30 20:38 Josh Boyer [this message]
2007-05-02 13:45 ` [PATCH] powerpc: fix spurious vectors on weird MPIC Josh Boyer
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