PCI: Add pci_irq_vector() and other stubs when !CONFIG_PCI

Add stub functions pci_alloc_irq_vectors_affinity() and pci_irq_vector()
when CONFIG_PCI is off so drivers can use them without resorting to ifdefs.

Also move the PCI_IRQ_* macros outside of the ifdefs so they are always
available.

Fixes: 625f269a5a7a ("crypto: inside-secure - add support for PCI based FPGA development board")
Link: https://lore.kernel.org/r/20190904122600.GA28660@gondor.apana.org.au
Reported-by: kbuild test robot <lkp@intel.com>
Reported-by: YueHaibing <yuehaibing@huawei.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>

diff --git a/include/linux/pci.h b/include/linux/pci.h
index f5bab312995dc75ea05117069df0f91cd8ca1043..23e4a6bcd08de7a0ab3a6a0f346b6dcc4b148436 100644 (file)
--- a/include/linux/pci.h
+++ b/include/linux/pci.h
@@ -925,6 +925,11 @@ enum {
        PCI_SCAN_ALL_PCIE_DEVS  = 0x00000040,   /* Scan all, not just dev 0 */
 };
 
+#define PCI_IRQ_LEGACY         (1 << 0) /* Allow legacy interrupts */
+#define PCI_IRQ_MSI            (1 << 1) /* Allow MSI interrupts */
+#define PCI_IRQ_MSIX           (1 << 2) /* Allow MSI-X interrupts */
+#define PCI_IRQ_AFFINITY       (1 << 3) /* Auto-assign affinity */
+
 /* These external functions are only available when PCI support is enabled */
 #ifdef CONFIG_PCI
 
@@ -1408,11 +1413,6 @@ resource_size_t pcibios_window_alignment(struct pci_bus *bus,
 int pci_set_vga_state(struct pci_dev *pdev, bool decode,
                      unsigned int command_bits, u32 flags);
 
-#define PCI_IRQ_LEGACY         (1 << 0) /* Allow legacy interrupts */
-#define PCI_IRQ_MSI            (1 << 1) /* Allow MSI interrupts */
-#define PCI_IRQ_MSIX           (1 << 2) /* Allow MSI-X interrupts */
-#define PCI_IRQ_AFFINITY       (1 << 3) /* Auto-assign affinity */
-
 /*
  * Virtual interrupts allow for more interrupts to be allocated
  * than the device has interrupts for. These are not programmed
@@ -1517,14 +1517,6 @@ static inline int pci_irq_get_node(struct pci_dev *pdev, int vec)
 }
 #endif
 
-static inline int
-pci_alloc_irq_vectors(struct pci_dev *dev, unsigned int min_vecs,
-                     unsigned int max_vecs, unsigned int flags)
-{
-       return pci_alloc_irq_vectors_affinity(dev, min_vecs, max_vecs, flags,
-                                             NULL);
-}
-
 /**
  * pci_irqd_intx_xlate() - Translate PCI INTx value to an IRQ domain hwirq
  * @d: the INTx IRQ domain
@@ -1780,8 +1772,29 @@ static inline const struct pci_device_id *pci_match_id(const struct pci_device_i
                                                         struct pci_dev *dev)
 { return NULL; }
 static inline bool pci_ats_disabled(void) { return true; }
+
+static inline int pci_irq_vector(struct pci_dev *dev, unsigned int nr)
+{
+       return -EINVAL;
+}
+
+static inline int
+pci_alloc_irq_vectors_affinity(struct pci_dev *dev, unsigned int min_vecs,
+                              unsigned int max_vecs, unsigned int flags,
+                              struct irq_affinity *aff_desc)
+{
+       return -ENOSPC;
+}
 #endif /* CONFIG_PCI */
 
+static inline int
+pci_alloc_irq_vectors(struct pci_dev *dev, unsigned int min_vecs,
+                     unsigned int max_vecs, unsigned int flags)
+{
+       return pci_alloc_irq_vectors_affinity(dev, min_vecs, max_vecs, flags,
+                                             NULL);
+}
+
 #ifdef CONFIG_PCI_ATS
 /* Address Translation Service */
 void pci_ats_init(struct pci_dev *dev);