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[PULL,40/45] ppc/xics: account correct irq status

Message ID 1474614921-2221-41-git-send-email-david@gibson.dropbear.id.au
State New
Headers show

Commit Message

David Gibson Sept. 23, 2016, 7:15 a.m. UTC 
From: Nikunj A Dadhania <nikunj@linux.vnet.ibm.com>

Fix inconsistent irq status, because of this in the trace logs, for e.g.
LSI status was 0x7, i.e. XICS_STATUS_ASSERTED, XICS_STATUS_SENT and
XICS_STATUS_REJECTED all set, which did not make sense. So the REJECTED
would have been set in earlier interrupt cycle, and then asserted and
sent in this current one.

Signed-off-by: Nikunj A Dadhania <nikunj@linux.vnet.ibm.com>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
---
 hw/intc/xics.c | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)
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Patch

diff --git a/hw/intc/xics.c b/hw/intc/xics.c
index cd48f42..69162f0 100644
--- a/hw/intc/xics.c
+++ b/hw/intc/xics.c
@@ -505,8 +505,11 @@  static void ics_reject(ICSState *ics, int nr)
     ICSIRQState *irq = ics->irqs + nr - ics->offset;
 
     trace_xics_ics_reject(nr, nr - ics->offset);
-    irq->status |= XICS_STATUS_REJECTED; /* Irrelevant but harmless for LSI */
-    irq->status &= ~XICS_STATUS_SENT; /* Irrelevant but harmless for MSI */
+    if (irq->flags & XICS_FLAGS_IRQ_MSI) {
+        irq->status |= XICS_STATUS_REJECTED;
+    } else if (irq->flags & XICS_FLAGS_IRQ_LSI) {
+        irq->status &= ~XICS_STATUS_SENT;
+    }
 }
 
 static void ics_resend(ICSState *ics)