linux-kernel - [RFC PATCH 06/11] PCI/MSI: Save MSI irq in PCI MSI layer

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Date:	Sat, 26 Jul 2014 11:08:43 +0800
From:	Yijing Wang <wangyijing@...wei.com>
To:	<linux-kernel@...r.kernel.org>
CC:	Xinwei Hu <huxinwei@...wei.com>, Wuyun <wuyun.wu@...wei.com>,
	"Bjorn Helgaas" <bhelgaas@...gle.com>, <linux-pci@...r.kernel.org>,
	<Paul.Mundt@...wei.com>,
	"James E.J. Bottomley" <jejb@...isc-linux.org>,
	"Marc Zyngier" <marc.zyngier@....com>,
	<linux-arm-kernel@...ts.infradead.org>,
	Russell King <linux@....linux.org.uk>,
	<linux-arch@...r.kernel.org>, <arnab.basu@...escale.com>,
	<virtualization@...ts.linux-foundation.org>,
	Hanjun Guo <guohanjun@...wei.com>,
	Yijing Wang <wangyijing@...wei.com>
Subject: [RFC PATCH 06/11] PCI/MSI: Save MSI irq in PCI MSI layer

Save MSI irq in PCI MSI layer, this is preparation
for generic MSI.

Signed-off-by: Yijing Wang <wangyijing@...wei.com>
---
 drivers/pci/msi.c |    5 +++--
 1 files changed, 3 insertions(+), 2 deletions(-)

diff --git a/drivers/pci/msi.c b/drivers/pci/msi.c
index 21b16e0..f96dd38 100644
--- a/drivers/pci/msi.c
+++ b/drivers/pci/msi.c
@@ -650,8 +650,6 @@ static int msi_capability_init(struct pci_dev *dev, int nvec)
 	pci_intx_for_msi(dev, 0);
 	msi_set_enable(dev, 1);
 	dev->msi_enabled = 1;
-
-	dev->irq = entry->irq;
 	return 0;
 }
 
@@ -1059,6 +1057,7 @@ int pci_enable_msi_range(struct pci_dev *dev, int minvec, int maxvec)
 {
 	int nvec;
 	int rc;
+	struct msi_desc *entry;
 
 	if (dev->current_state != PCI_D0)
 		return -EINVAL;
@@ -1114,6 +1113,8 @@ int pci_enable_msi_range(struct pci_dev *dev, int minvec, int maxvec)
 		return rc;
 	}
 
+	entry = list_entry(dev->msi_list.next, struct msi_desc, list);
+	dev->irq = entry->irq;
 	return nvec;
 }
 EXPORT_SYMBOL(pci_enable_msi_range);
-- 
1.7.1

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