PCI MSI: Use mask_pos instead of mask_base when appropriate
MSI interrupts have a mask_pos where MSI-X have a mask_base. Use a
transparent union to get rid of some ugly casts.
Signed-off-by: Matthew Wilcox <willy@linux.intel.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
diff --git a/drivers/pci/msi.c b/drivers/pci/msi.c
index a658c0f..fcde04d 100644
--- a/drivers/pci/msi.c
+++ b/drivers/pci/msi.c
@@ -145,7 +145,7 @@
if (!entry->msi_attrib.maskbit)
return 0;
- pos = (long)entry->mask_base;
+ pos = entry->mask_pos;
pci_read_config_dword(entry->dev, pos, &mask_bits);
mask_bits &= ~mask;
mask_bits |= flag & mask;
@@ -363,8 +363,7 @@
unsigned int base, maskbits, temp;
base = msi_mask_bits_reg(pos, entry->msi_attrib.is_64);
- entry->mask_base = (void __iomem *)(long)base;
-
+ entry->mask_pos = base;
/* All MSIs are unmasked by default, Mask them all */
pci_read_config_dword(dev, base, &maskbits);
temp = msi_mask((control & PCI_MSI_FLAGS_QMASK) >> 1);
diff --git a/include/linux/msi.h b/include/linux/msi.h
index 9c5ce21..5025ca4 100644
--- a/include/linux/msi.h
+++ b/include/linux/msi.h
@@ -33,7 +33,10 @@
unsigned int irq;
struct list_head list;
- void __iomem *mask_base;
+ union {
+ void __iomem *mask_base;
+ u8 mask_pos;
+ };
struct pci_dev *dev;
/* Last set MSI message */