1 files changed, 9 insertions, 0 deletions

diff --git a/drivers/ide/pci/siimage.c b/drivers/ide/pci/siimage.c
index 2b9961b88135..022d244f2eb0 100644
--- a/drivers/ide/pci/siimage.c
+++ b/drivers/ide/pci/siimage.c
@@ -701,6 +701,7 @@ static unsigned int setup_mmio_siimage (struct pci_dev *dev, const char *name)
         unsigned long barsize   = pci_resource_len(dev, 5);
         u8 tmpbyte      = 0;
         void __iomem *ioaddr;
+        u32 tmp, irq_mask;
 
         /*
          *      Drop back to PIO if we can't map the mmio. Some
@@ -726,6 +727,14 @@ static unsigned int setup_mmio_siimage (struct pci_dev *dev, const char *name)
         pci_set_drvdata(dev, (void *) ioaddr);
 
         if (pdev_is_sata(dev)) {
+                /* make sure IDE0/1 interrupts are not masked */
+                irq_mask = (1 << 22) | (1 << 23);
+                tmp = readl(ioaddr + 0x48);
+                if (tmp & irq_mask) {
+                        tmp &= ~irq_mask;
+                        writel(tmp, ioaddr + 0x48);
+                        readl(ioaddr + 0x48); /* flush */
+                }
                 writel(0, ioaddr + 0x148);
                 writel(0, ioaddr + 0x1C8);
         }