PCI: Fix build if quirks are not enabled

After commit b9c3b266411d27f1a6466c19d146d08db576bfea ("PCI: support
device-specific reset methods") the kernel build is broken if
CONFIG_PCI_QUIRKS is unset.

Fix this by moving pci_dev_specific_reset() to drivers/pci/quirks.c and
providing an empty replacement for !CONFIG_PCI_QUIRKS builds.

Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Reported-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

3 files changed, 19 insertions, 17 deletions

diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c
index 864e703cf73..0906599ebfd 100644
--- a/drivers/pci/pci.c
+++ b/drivers/pci/pci.c
@@ -2284,21 +2284,6 @@ static int pci_parent_bus_reset(struct pci_dev *dev, int probe)
         return 0;
 }
 
-static int pci_dev_specific_reset(struct pci_dev *dev, int probe)
-{
-        struct pci_dev_reset_methods *i;
-
-        for (i = pci_dev_reset_methods; i->reset; i++) {
-                if ((i->vendor == dev->vendor ||
-                     i->vendor == (u16)PCI_ANY_ID) &&
-                    (i->device == dev->device ||
-                     i->device == (u16)PCI_ANY_ID))
-                        return i->reset(dev, probe);
-        }
-
-        return -ENOTTY;
-}
-
 static int pci_dev_reset(struct pci_dev *dev, int probe)
 {
         int rc;
diff --git a/drivers/pci/pci.h b/drivers/pci/pci.h
index 709eaa4fee5..fbd0e3adbca 100644
--- a/drivers/pci/pci.h
+++ b/drivers/pci/pci.h
@@ -319,6 +319,6 @@ struct pci_dev_reset_methods {
         int (*reset)(struct pci_dev *dev, int probe);
 };
 
-extern struct pci_dev_reset_methods pci_dev_reset_methods[];
+extern int pci_dev_specific_reset(struct pci_dev *dev, int probe);
 
 #endif /* DRIVERS_PCI_H */
diff --git a/drivers/pci/quirks.c b/drivers/pci/quirks.c
index 8726698866b..5c449fc4db1 100644
--- a/drivers/pci/quirks.c
+++ b/drivers/pci/quirks.c
@@ -2684,14 +2684,31 @@ static int reset_intel_82599_sfp_virtfn(struct pci_dev *dev, int probe)
 
 #define PCI_DEVICE_ID_INTEL_82599_SFP_VF   0x10ed
 
-struct pci_dev_reset_methods pci_dev_reset_methods[] = {
+static const struct pci_dev_reset_methods pci_dev_reset_methods[] = {
         { PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82599_SFP_VF,
                  reset_intel_82599_sfp_virtfn },
         { PCI_VENDOR_ID_INTEL, PCI_ANY_ID,
                 reset_intel_generic_dev },
         { 0 }
 };
+
+int pci_dev_specific_reset(struct pci_dev *dev, int probe)
+{
+        struct pci_dev_reset_methods *i;
+
+        for (i = pci_dev_reset_methods; i->reset; i++) {
+                if ((i->vendor == dev->vendor ||
+                     i->vendor == (u16)PCI_ANY_ID) &&
+                    (i->device == dev->device ||
+                     i->device == (u16)PCI_ANY_ID))
+                        return i->reset(dev, probe);
+        }
+
+        return -ENOTTY;
+}
+
 #else
 void pci_fixup_device(enum pci_fixup_pass pass, struct pci_dev *dev) {}
+int pci_dev_specific_reset(struct pci_dev *dev, int probe) { return -ENOTTY; }
 #endif
 EXPORT_SYMBOL(pci_fixup_device);