Revert "PCI: Add x86_msi.msi_mask_irq() and msix_mask_irq()"

The problem fixed by 0e4ccb1505a9 ("PCI: Add x86_msi.msi_mask_irq() and
msix_mask_irq()") has been fixed in a simpler way by a previous commit
("PCI/MSI: Add pci_msi_ignore_mask to prevent writes to MSI/MSI-X Mask
Bits").

The msi_mask_irq() and msix_mask_irq() x86_msi_ops added by 0e4ccb1505a9
are no longer needed, so revert the commit.

default_msi_mask_irq() and default_msix_mask_irq() were added by
0e4ccb1505a9 and are still used by s390, so keep them for now.

[bhelgaas: changelog]
Signed-off-by: Yijing Wang <wangyijing@huawei.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: David Vrabel <david.vrabel@citrix.com>
CC: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
CC: xen-devel@lists.xenproject.org

1 files changed, 4 insertions, 2 deletions

diff --git a/include/linux/msi.h b/include/linux/msi.h
index 86dc501a1534..f6630a53be70 100644
--- a/include/linux/msi.h
+++ b/include/linux/msi.h
@@ -22,6 +22,8 @@ void __write_msi_msg(struct msi_desc *entry, struct msi_msg *msg);
 void read_msi_msg(unsigned int irq, struct msi_msg *msg);
 void get_cached_msi_msg(unsigned int irq, struct msi_msg *msg);
 void write_msi_msg(unsigned int irq, struct msi_msg *msg);
+u32 __msix_mask_irq(struct msi_desc *desc, u32 flag);
+u32 __msi_mask_irq(struct msi_desc *desc, u32 mask, u32 flag);
 
 struct msi_desc {
         struct {
@@ -62,8 +64,8 @@ void arch_restore_msi_irqs(struct pci_dev *dev);
 
 void default_teardown_msi_irqs(struct pci_dev *dev);
 void default_restore_msi_irqs(struct pci_dev *dev);
-u32 default_msi_mask_irq(struct msi_desc *desc, u32 mask, u32 flag);
-u32 default_msix_mask_irq(struct msi_desc *desc, u32 flag);
+#define default_msi_mask_irq  __msi_mask_irq
+#define default_msix_mask_irq  __msix_mask_irq
 
 struct msi_chip {
         struct module *owner;