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path: root/drivers/pci/pci.c
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-rw-r--r--drivers/pci/pci.c26
1 files changed, 26 insertions, 0 deletions
diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c
index e179af3186f5..ccff633a3948 100644
--- a/drivers/pci/pci.c
+++ b/drivers/pci/pci.c
@@ -798,6 +798,31 @@ pci_clear_mwi(struct pci_dev *dev)
798 } 798 }
799} 799}
800 800
801/**
802 * pci_intx - enables/disables PCI INTx for device dev
803 * @dev: the PCI device to operate on
804 * @enable: boolean
805 *
806 * Enables/disables PCI INTx for device dev
807 */
808void
809pci_intx(struct pci_dev *pdev, int enable)
810{
811 u16 pci_command, new;
812
813 pci_read_config_word(pdev, PCI_COMMAND, &pci_command);
814
815 if (enable) {
816 new = pci_command & ~PCI_COMMAND_INTX_DISABLE;
817 } else {
818 new = pci_command | PCI_COMMAND_INTX_DISABLE;
819 }
820
821 if (new != pci_command) {
822 pci_write_config_word(pdev, PCI_COMMAND, pci_command);
823 }
824}
825
801#ifndef HAVE_ARCH_PCI_SET_DMA_MASK 826#ifndef HAVE_ARCH_PCI_SET_DMA_MASK
802/* 827/*
803 * These can be overridden by arch-specific implementations 828 * These can be overridden by arch-specific implementations
@@ -875,6 +900,7 @@ EXPORT_SYMBOL(pci_request_region);
875EXPORT_SYMBOL(pci_set_master); 900EXPORT_SYMBOL(pci_set_master);
876EXPORT_SYMBOL(pci_set_mwi); 901EXPORT_SYMBOL(pci_set_mwi);
877EXPORT_SYMBOL(pci_clear_mwi); 902EXPORT_SYMBOL(pci_clear_mwi);
903EXPORT_SYMBOL_GPL(pci_intx);
878EXPORT_SYMBOL(pci_set_dma_mask); 904EXPORT_SYMBOL(pci_set_dma_mask);
879EXPORT_SYMBOL(pci_set_consistent_dma_mask); 905EXPORT_SYMBOL(pci_set_consistent_dma_mask);
880EXPORT_SYMBOL(pci_assign_resource); 906EXPORT_SYMBOL(pci_assign_resource);