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 Re: [Xen-devel] [PATCH v1 15/21] Powerpc/MSI: Use MSI chip framework to configure MSI/MSI-X irq
 
To: Yijing Wang <wangyijing@xxxxxxxxxx>, Bjorn Helgaas <bhelgaas@xxxxxxxxxx>From: Sergei Shtylyov <sergei.shtylyov@xxxxxxxxxxxxxxxxxx>Date: Fri, 05 Sep 2014 14:47:48 +0400Cc: linux-mips@xxxxxxxxxxxxxx, linux-ia64@xxxxxxxxxxxxxxx,	linux-pci@xxxxxxxxxxxxxxx, Bharat.Bhushan@xxxxxxxxxxxxx,	sparclinux@xxxxxxxxxxxxxxx, linux-arch@xxxxxxxxxxxxxxx,	linux-s390@xxxxxxxxxxxxxxx, Russell King <linux@xxxxxxxxxxxxxxxx>,	Joerg Roedel <joro@xxxxxxxxxx>, x86@xxxxxxxxxx,	Sebastian Ott <sebott@xxxxxxxxxxxxxxxxxx>,	Benjamin Herrenschmidt <benh@xxxxxxxxxxxxxxxxxxx>,	xen-devel@xxxxxxxxxxxxxxxxxxxx, arnab.basu@xxxxxxxxxxxxx,	Arnd Bergmann <arnd@xxxxxxxx>, Chris Metcalf <cmetcalf@xxxxxxxxxx>,	Thomas Gleixner <tglx@xxxxxxxxxxxxx>, linux-arm-kernel@xxxxxxxxxxxxxxxxxxx,	Xinwei Hu <huxinwei@xxxxxxxxxx>, Tony Luck <tony.luck@xxxxxxxxx>,	Ralf Baechle <ralf@xxxxxxxxxxxxxx>,	iommu@xxxxxxxxxxxxxxxxxxxxxxxxxx, Wuyun <wuyun.wu@xxxxxxxxxx>,	linuxppc-dev@xxxxxxxxxxxxxxxx, "David S. Miller" <davem@xxxxxxxxxxxxx>Delivery-date: Fri, 05 Sep 2014 10:58:24 +0000List-id: Xen developer discussion <xen-devel.lists.xen.org> 
 
Hello.
On 9/5/2014 2:10 PM, Yijing Wang wrote:
 
Use MSI chip framework instead of arch MSI functions to configure
MSI/MSI-X irq. So we can manage MSI/MSI-X irq in a unified framework.
 
 
Signed-off-by: Yijing Wang <wangyijing@xxxxxxxxxx>
---
  arch/powerpc/kernel/msi.c |   14 ++++++++++++--
  1 files changed, 12 insertions(+), 2 deletions(-)
 
 
diff --git a/arch/powerpc/kernel/msi.c b/arch/powerpc/kernel/msi.c
index 71bd161..01781a4 100644
--- a/arch/powerpc/kernel/msi.c
+++ b/arch/powerpc/kernel/msi.c
 
[...]
 
@@ -27,7 +27,17 @@ int arch_setup_msi_irqs(struct pci_dev *dev, int nvec, int 
type)
        return ppc_md.setup_msi_irqs(dev, nvec, type);
  }
-void arch_teardown_msi_irqs(struct pci_dev *dev)
+static void ppc_teardown_msi_irqs(struct pci_dev *dev)
 
   Shouldn't this function take IRQ # instead?
 
  {
        ppc_md.teardown_msi_irqs(dev);
  }
+
+static struct msi_chip ppc_msi_chip = {
+       .setup_irqs = ppc_setup_msi_irqs,
+       .teardown_irqs = ppc_teardown_msi_irqs,
+};
+
+struct msi_chip *arch_find_msi_chip(struct pci_dev *dev)
+{
+       return &ppc_msi_chip;
+}
 
WBR, Sergei
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