From: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Date: Thu, 24 Feb 2011 19:20:12 +0000 (-0500)
Subject: xen/irq: Export 'xen_pirq_from_irq' function.
X-Git-Tag: v3.0-rc1~415^2~4
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=e6197acc726ab3baa60375a5891d58c2ee87e0f3;p=karo-tx-linux.git

xen/irq: Export 'xen_pirq_from_irq' function.

We need this to find the real Xen PIRQ value for a device
that requests an MSI or MSI-X. In the past we used
'xen_gsi_from_irq' since that function would return
an Xen PIRQ or GSI depending on the provided IRQ. Now that
we have seperated that we need to use the correct
function.

[v2: Deal with rebase on stable/irq.cleanup]
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
---

diff --git a/drivers/xen/events.c b/drivers/xen/events.c
index 0ac7a149e7f2..e4e8e9a745bf 100644
--- a/drivers/xen/events.c
+++ b/drivers/xen/events.c
@@ -763,6 +763,12 @@ out:
 	return irq;
 }
 
+
+int xen_pirq_from_irq(unsigned irq)
+{
+	return pirq_from_irq(irq);
+}
+EXPORT_SYMBOL_GPL(xen_pirq_from_irq);
 int bind_evtchn_to_irq(unsigned int evtchn)
 {
 	int irq;
diff --git a/include/xen/events.h b/include/xen/events.h
index 932e54051d3e..9af21e19545a 100644
--- a/include/xen/events.h
+++ b/include/xen/events.h
@@ -95,6 +95,9 @@ int xen_destroy_irq(int irq);
 /* Return irq from pirq */
 int xen_irq_from_pirq(unsigned pirq);
 
+/* Return the pirq allocated to the irq. */
+int xen_pirq_from_irq(unsigned irq);
+
 /* Determine whether to ignore this IRQ if it is passed to a guest. */
 int xen_test_irq_shared(int irq);