x86/PCI: Use for_pci_msi_entry() to access MSI device list

Use accessor for_each_pci_msi_entry() to access MSI device list, so we
could easily move msi_list from struct pci_dev into struct device
later.

Signed-off-by: Jiang Liu <jiang.liu@linux.intel.com>
Acked-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Cc: Tony Luck <tony.luck@intel.com>
Cc: linux-arm-kernel@lists.infradead.org
Cc: xen-devel@lists.xenproject.org
Cc: Bjorn Helgaas <bhelgaas@google.com>
Cc: Grant Likely <grant.likely@linaro.org>
Cc: Marc Zyngier <marc.zyngier@arm.com>
Cc: Stuart Yoder <stuart.yoder@freescale.com>
Cc: Yijing Wang <wangyijing@huawei.com>
Cc: Borislav Petkov <bp@alien8.de>
Link: http://lkml.kernel.org/r/1436428847-8886-6-git-send-email-jiang.liu@linux.intel.com
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

diff --git a/arch/x86/pci/xen.c b/arch/x86/pci/xen.c
index d22f4b5..ff31ab4 100644 (file)
--- a/arch/x86/pci/xen.c
+++ b/arch/x86/pci/xen.c
@@ -179,7 +179,7 @@ static int xen_setup_msi_irqs(struct pci_dev *dev, int nvec, int type)
        if (ret)
                goto error;
        i = 0;
-       list_for_each_entry(msidesc, &dev->msi_list, list) {
+       for_each_pci_msi_entry(msidesc, dev) {
                irq = xen_bind_pirq_msi_to_irq(dev, msidesc, v[i],
                                               (type == PCI_CAP_ID_MSI) ? nvec : 1,
                                               (type == PCI_CAP_ID_MSIX) ?
@@ -230,7 +230,7 @@ static int xen_hvm_setup_msi_irqs(struct pci_dev *dev, int nvec, int type)
        if (type == PCI_CAP_ID_MSI && nvec > 1)
                return 1;
 
-       list_for_each_entry(msidesc, &dev->msi_list, list) {
+       for_each_pci_msi_entry(msidesc, dev) {
                __pci_read_msi_msg(msidesc, &msg);
                pirq = MSI_ADDR_EXT_DEST_ID(msg.address_hi) |
                        ((msg.address_lo >> MSI_ADDR_DEST_ID_SHIFT) & 0xff);
@@ -274,7 +274,7 @@ static int xen_initdom_setup_msi_irqs(struct pci_dev *dev, int nvec, int type)
        int ret = 0;
        struct msi_desc *msidesc;
 
-       list_for_each_entry(msidesc, &dev->msi_list, list) {
+       for_each_pci_msi_entry(msidesc, dev) {
                struct physdev_map_pirq map_irq;
                domid_t domid;
 
@@ -386,7 +386,7 @@ static void xen_teardown_msi_irqs(struct pci_dev *dev)
 {
        struct msi_desc *msidesc;
 
-       msidesc = list_entry(dev->msi_list.next, struct msi_desc, list);
+       msidesc = first_pci_msi_entry(dev);
        if (msidesc->msi_attrib.is_msix)
                xen_pci_frontend_disable_msix(dev);
        else