linux-kernel - [PATCH 6/8] xen/pci: Squash pci_xen_initial_domain and xen_setup

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Message-Id: <1308165587-24902-7-git-send-email-konrad.wilk@oracle.com>
Date:	Wed, 15 Jun 2011 15:19:45 -0400
From:	Konrad Rzeszutek Wilk <konrad.wilk@...cle.com>
To:	xen-devel@...ts.xensource.com, linux-kernel@...r.kernel.org,
	Jeremy Fitzhardinge <jeremy@...p.org>,
	stefano.stabellini@...citrix.com, Ian.Campbell@...rix.com
Cc:	Konrad Rzeszutek Wilk <konrad.wilk@...cle.com>
Subject: [PATCH 6/8] xen/pci: Squash pci_xen_initial_domain and xen_setup_pirqs together.

Since they are only called once and the rest of the pci_xen_*
functions follow the same pattern of setup.

Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@...cle.com>
---
 arch/x86/include/asm/xen/pci.h |    5 +++--
 arch/x86/pci/xen.c             |   17 ++++++-----------
 drivers/xen/events.c           |    2 +-
 3 files changed, 10 insertions(+), 14 deletions(-)

diff --git a/arch/x86/include/asm/xen/pci.h b/arch/x86/include/asm/xen/pci.h
index 4fbda9a..968d57d 100644
--- a/arch/x86/include/asm/xen/pci.h
+++ b/arch/x86/include/asm/xen/pci.h
@@ -14,13 +14,14 @@ static inline int pci_xen_hvm_init(void)
 }
 #endif
 #if defined(CONFIG_XEN_DOM0)
-void __init xen_setup_pirqs(void);
+int __init pci_xen_initial_domain(void);
 int xen_find_device_domain_owner(struct pci_dev *dev);
 int xen_register_device_domain_owner(struct pci_dev *dev, uint16_t domain);
 int xen_unregister_device_domain_owner(struct pci_dev *dev);
 #else
-static inline void __init xen_setup_pirqs(void)
+static inline int __init pci_xen_initial_domain(void)
 {
+	return -1;
 }
 static inline int xen_find_device_domain_owner(struct pci_dev *dev)
 {
diff --git a/arch/x86/pci/xen.c b/arch/x86/pci/xen.c
index 7c60a9b..7425d7d 100644
--- a/arch/x86/pci/xen.c
+++ b/arch/x86/pci/xen.c
@@ -405,8 +405,11 @@ static __init void xen_setup_acpi_sci(void)
 	return;
 }
 #endif
-static int __init pci_xen_initial_domain(void)
+
+int __init pci_xen_initial_domain(void)
 {
+	int pirq, irq;
+
 #ifdef CONFIG_PCI_MSI
 	x86_msi.setup_msi_irqs = xen_initdom_setup_msi_irqs;
 	x86_msi.teardown_msi_irq = xen_teardown_msi_irq;
@@ -415,15 +418,6 @@ static int __init pci_xen_initial_domain(void)
 	xen_setup_acpi_sci();
 	__acpi_register_gsi = acpi_register_gsi_xen;
 #endif
-	return 0;
-}
-
-void __init xen_setup_pirqs(void)
-{
-	int pirq, irq;
-
-	pci_xen_initial_domain();
-
 	if (0 == nr_ioapics) {
 		for (irq = 0; irq < NR_IRQS_LEGACY; irq++) {
 			pirq = xen_allocate_pirq_gsi(irq);
@@ -432,7 +426,7 @@ void __init xen_setup_pirqs(void)
 				break;
 			irq = xen_bind_pirq_gsi_to_irq(irq, pirq, 0, "xt-pic");
 		}
-		return;
+		return 0;
 	}
 #ifdef CONFIG_ACPI
 	/* Pre-allocate legacy irqs */
@@ -446,6 +440,7 @@ void __init xen_setup_pirqs(void)
 			trigger ? ACPI_LEVEL_SENSITIVE : ACPI_EDGE_SENSITIVE, true);
 	}
 #endif
+	return 0;
 }
 
 struct xen_device_domain_owner {
diff --git a/drivers/xen/events.c b/drivers/xen/events.c
index 3ff822b..ac0dc67 100644
--- a/drivers/xen/events.c
+++ b/drivers/xen/events.c
@@ -1693,6 +1693,6 @@ void __init xen_init_IRQ(void)
 	} else {
 		irq_ctx_init(smp_processor_id());
 		if (xen_initial_domain())
-			xen_setup_pirqs();
+			pci_xen_initial_domain();
 	}
 }
-- 
1.7.4.1

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