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PCI: Set ->mask_pos correctly 

The "+" operation has higher precedence than "?:" and ->msi_cap is
always non-zero here so the original statement is equivalent to:

    entry->mask_pos = PCI_MSI_MASK_64;

Which wasn't the intent.

[bhelgaas: my fault from 78b5a310ce]
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
This commit is contained in:
Dan Carpenter 2013-04-30 10:44:54 +03:00 committed by Bjorn Helgaas
parent ab86e974f0
commit e5f66eafe5
1 changed files with 4 additions and 2 deletions
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6
drivers/pci/msi.c
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@ -563,8 +563,10 @@ static int msi_capability_init(struct pci_dev *dev, int nvec)
entry->msi_attrib.default_irq = dev->irq; /* Save IOAPIC IRQ */
entry->msi_attrib.pos = dev->msi_cap;
entry->mask_pos = dev->msi_cap + (control & PCI_MSI_FLAGS_64BIT) ?
PCI_MSI_MASK_64 : PCI_MSI_MASK_32;
if (control & PCI_MSI_FLAGS_64BIT)
entry->mask_pos = dev->msi_cap + PCI_MSI_MASK_64;
else
entry->mask_pos = dev->msi_cap + PCI_MSI_MASK_32;
/* All MSIs are unmasked by default, Mask them all */
if (entry->msi_attrib.maskbit)
pci_read_config_dword(dev, entry->mask_pos, &entry->masked);