linux-kernel - [PATCH 1/3] PCI: Refactor restore_msi_irqs

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Message-ID: <525E32FC.3010604@oracle.com>
Date:	Wed, 16 Oct 2013 14:32:28 +0800
From:	Zhenzhong Duan <zhenzhong.duan@...cle.com>
To:	"linux-pci@...r.kernel.org" <linux-pci@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	xen-devel <xen-devel@...ts.xen.org>
CC:	Bjorn Helgaas <bhelgaas@...gle.com>,
	Konrad Rzeszutek Wilk <konrad.wilk@...cle.com>,
	Feng Jin <joe.jin@...cle.com>,
	Sucheta Chakraborty <sucheta.chakraborty@...gic.com>
Subject: [PATCH 1/3] PCI: Refactor restore_msi_irqs - code movement

Move default_restore_msi_irqs down to reference msi_mask_irq and msix_mask_irq.

This patch lays the groundwork for patch titled:
'PCI: Refactor MSI/MSIX mask restore code to fix interrupt lost issue'

Tested-by: Sucheta Chakraborty <sucheta.chakraborty@...gic.com>
Signed-off-by: Zhenzhong Duan <zhenzhong.duan@...cle.com>
Acked-by: Konrad Rzeszutek Wilk <konrad.wilk@...cle.com>
---
 drivers/pci/msi.c |   36 ++++++++++++++++++------------------
 1 files changed, 18 insertions(+), 18 deletions(-)

diff --git a/drivers/pci/msi.c b/drivers/pci/msi.c
index d5f90d6..ecd4cdf 100644
--- a/drivers/pci/msi.c
+++ b/drivers/pci/msi.c
@@ -116,24 +116,6 @@ void __weak arch_teardown_msi_irqs(struct pci_dev *dev)
 	return default_teardown_msi_irqs(dev);
 }
 
-void default_restore_msi_irqs(struct pci_dev *dev, int irq)
-{
-	struct msi_desc *entry;
-
-	entry = NULL;
-	if (dev->msix_enabled) {
-		list_for_each_entry(entry, &dev->msi_list, list) {
-			if (irq == entry->irq)
-				break;
-		}
-	} else if (dev->msi_enabled)  {
-		entry = irq_get_msi_desc(irq);
-	}
-
-	if (entry)
-		write_msi_msg(irq, &entry->msg);
-}
-
 void __weak arch_restore_msi_irqs(struct pci_dev *dev, int irq)
 {
 	return default_restore_msi_irqs(dev, irq);
@@ -252,6 +234,24 @@ void unmask_msi_irq(struct irq_data *data)
 	msi_set_mask_bit(data, 0);
 }
 
+void default_restore_msi_irqs(struct pci_dev *dev, int irq)
+{
+	struct msi_desc *entry;
+
+	entry = NULL;
+	if (dev->msix_enabled) {
+		list_for_each_entry(entry, &dev->msi_list, list) {
+			if (irq == entry->irq)
+				break;
+		}
+	} else if (dev->msi_enabled)  {
+		entry = irq_get_msi_desc(irq);
+	}
+
+	if (entry)
+		write_msi_msg(irq, &entry->msg);
+}
+
 void __read_msi_msg(struct msi_desc *entry, struct msi_msg *msg)
 {
 	BUG_ON(entry->dev->current_state != PCI_D0);
-- 
1.7.3

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