diff options
Diffstat (limited to 'drivers/pci/pci.c')
| -rw-r--r-- | drivers/pci/pci.c | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c index c9565c7d58f0..3f384e9137e3 100644 --- a/drivers/pci/pci.c +++ b/drivers/pci/pci.c @@ -4480,6 +4480,35 @@ void pci_disable_parity(struct pci_dev *dev) } /** + * pci_intx_unmanaged - enables/disables PCI INTx for device dev, + * unmanaged version + * @pdev: the PCI device to operate on + * @enable: boolean: whether to enable or disable PCI INTx + * + * Enables/disables PCI INTx for device @pdev + * + * This function behavios identically to pci_intx(), but is never managed with + * devres. + */ +void pci_intx_unmanaged(struct pci_dev *pdev, int enable) +{ + u16 pci_command, new; + + pci_read_config_word(pdev, PCI_COMMAND, &pci_command); + + if (enable) + new = pci_command & ~PCI_COMMAND_INTX_DISABLE; + else + new = pci_command | PCI_COMMAND_INTX_DISABLE; + + if (new == pci_command) + return; + + pci_write_config_word(pdev, PCI_COMMAND, new); +} +EXPORT_SYMBOL_GPL(pci_intx_unmanaged); + +/** * pci_intx - enables/disables PCI INTx for device dev * @pdev: the PCI device to operate on * @enable: boolean: whether to enable or disable PCI INTx |