1 files changed, 6 insertions, 0 deletions

diff --git a/arch/mips/pci/fixup-malta.c b/arch/mips/pci/fixup-malta.c
index 2f9e52a1a750..40e920c653cc 100644
--- a/arch/mips/pci/fixup-malta.c
+++ b/arch/mips/pci/fixup-malta.c
@@ -68,6 +68,7 @@ static void malta_piix_func0_fixup(struct pci_dev *pdev)
 {
         unsigned char reg_val;
         u32 reg_val32;
+        u16 reg_val16;
         /* PIIX PIRQC[A:D] irq mappings */
         static int piixirqmap[PIIX4_FUNC0_PIRQRC_IRQ_ROUTING_MAX] = {
                 0,  0,  0,  3,
@@ -107,6 +108,11 @@ static void malta_piix_func0_fixup(struct pci_dev *pdev)
         pci_read_config_byte(pdev, PIIX4_FUNC0_SERIRQC, &reg_val);
         reg_val |= PIIX4_FUNC0_SERIRQC_EN | PIIX4_FUNC0_SERIRQC_CONT;
         pci_write_config_byte(pdev, PIIX4_FUNC0_SERIRQC, reg_val);
+
+        /* Enable response to special cycles */
+        pci_read_config_word(pdev, PCI_COMMAND, &reg_val16);
+        pci_write_config_word(pdev, PCI_COMMAND,
+                              reg_val16 | PCI_COMMAND_SPECIAL);
 }
 
 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82371AB_0,