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path: root/drivers/pci/msi.c
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Diffstat (limited to 'drivers/pci/msi.c')
-rw-r--r--drivers/pci/msi.c18
1 files changed, 12 insertions, 6 deletions
diff --git a/drivers/pci/msi.c b/drivers/pci/msi.c
index 87e01615053d..07c9f09c856d 100644
--- a/drivers/pci/msi.c
+++ b/drivers/pci/msi.c
@@ -224,6 +224,12 @@ static struct msi_desc* alloc_msi_entry(void)
return entry;
}
+static void pci_intx_for_msi(struct pci_dev *dev, int enable)
+{
+ if (!(dev->dev_flags & PCI_DEV_FLAGS_MSI_INTX_DISABLE_BUG))
+ pci_intx(dev, enable);
+}
+
#ifdef CONFIG_PM
static void __pci_restore_msi_state(struct pci_dev *dev)
{
@@ -237,7 +243,7 @@ static void __pci_restore_msi_state(struct pci_dev *dev)
entry = get_irq_msi(dev->irq);
pos = entry->msi_attrib.pos;
- pci_intx(dev, 0); /* disable intx */
+ pci_intx_for_msi(dev, 0);
msi_set_enable(dev, 0);
write_msi_msg(dev->irq, &entry->msg);
if (entry->msi_attrib.maskbit)
@@ -260,7 +266,7 @@ static void __pci_restore_msix_state(struct pci_dev *dev)
return;
/* route the table */
- pci_intx(dev, 0); /* disable intx */
+ pci_intx_for_msi(dev, 0);
msix_set_enable(dev, 0);
list_for_each_entry(entry, &dev->msi_list, list) {
@@ -343,7 +349,7 @@ static int msi_capability_init(struct pci_dev *dev)
}
/* Set MSI enabled bits */
- pci_intx(dev, 0); /* disable intx */
+ pci_intx_for_msi(dev, 0);
msi_set_enable(dev, 1);
dev->msi_enabled = 1;
@@ -433,7 +439,7 @@ static int msix_capability_init(struct pci_dev *dev,
i++;
}
/* Set MSI-X enabled bits */
- pci_intx(dev, 0); /* disable intx */
+ pci_intx_for_msi(dev, 0);
msix_set_enable(dev, 1);
dev->msix_enabled = 1;
@@ -528,7 +534,7 @@ void pci_disable_msi(struct pci_dev* dev)
return;
msi_set_enable(dev, 0);
- pci_intx(dev, 1); /* enable intx */
+ pci_intx_for_msi(dev, 1);
dev->msi_enabled = 0;
BUG_ON(list_empty(&dev->msi_list));
@@ -640,7 +646,7 @@ void pci_disable_msix(struct pci_dev* dev)
return;
msix_set_enable(dev, 0);
- pci_intx(dev, 1); /* enable intx */
+ pci_intx_for_msi(dev, 1);
dev->msix_enabled = 0;
msix_free_all_irqs(dev);