[PATCH 14/18] drm: inline drm_pci_set_unique

[Daniel Vetter <daniel.vetter@ffwll.ch>]

This is only used for drm versions 1.0, and kms drivers have never
been there. So we can appropriately restrict this to legacy and hence
pci devices and inline everything.

v2: Make the dummy function actually return something, caught by Wu
Fengguang's 0-day tester.

Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
---
 drivers/gpu/drm/drm_ioctl.c | 10 +++++++---
 drivers/gpu/drm/drm_pci.c   | 14 ++++++++++----
 include/drm/drmP.h          |  5 +++--
 3 files changed, 20 insertions(+), 9 deletions(-)

diff --git a/drivers/gpu/drm/drm_ioctl.c b/drivers/gpu/drm/drm_ioctl.c
index 93a42040bedb..5aea5b57ba4b 100644
--- a/drivers/gpu/drm/drm_ioctl.c
+++ b/drivers/gpu/drm/drm_ioctl.c
@@ -93,7 +93,8 @@ drm_unset_busid(struct drm_device *dev,
  * Copies the bus id from userspace into drm_device::unique, and verifies that
  * it matches the device this DRM is attached to (EINVAL otherwise).  Deprecated
  * in interface version 1.1 and will return EBUSY when setversion has requested
- * version 1.1 or greater.
+ * version 1.1 or greater. Also note that KMS is all version 1.1 and later and
+ * UMS was only ever support on pci devices.
  */
 int drm_setunique(struct drm_device *dev, void *data,
 		  struct drm_file *file_priv)
@@ -108,10 +109,13 @@ int drm_setunique(struct drm_device *dev, void *data,
 	if (!u->unique_len || u->unique_len > 1024)
 		return -EINVAL;
 
-	if (!dev->driver->bus->set_unique)
+	if (drm_core_check_feature(dev, DRIVER_MODESET))
+		return 0;
+
+	if (WARN_ON(!dev->pdev))
 		return -EINVAL;
 
-	ret = dev->driver->bus->set_unique(dev, master, u);
+	ret = drm_pci_set_unique(dev, master, u);
 	if (ret)
 		goto err;
 
diff --git a/drivers/gpu/drm/drm_pci.c b/drivers/gpu/drm/drm_pci.c
index 7d388d188c4c..0fa42072262b 100644
--- a/drivers/gpu/drm/drm_pci.c
+++ b/drivers/gpu/drm/drm_pci.c
@@ -185,9 +185,9 @@ err:
 	return ret;
 }
 
-static int drm_pci_set_unique(struct drm_device *dev,
-			      struct drm_master *master,
-			      struct drm_unique *u)
+int drm_pci_set_unique(struct drm_device *dev,
+		       struct drm_master *master,
+		       struct drm_unique *u)
 {
 	int domain, bus, slot, func, ret;
 	const char *bus_name;
@@ -315,7 +315,6 @@ void drm_pci_agp_destroy(struct drm_device *dev)
 static struct drm_bus drm_pci_bus = {
 	.get_name = drm_pci_get_name,
 	.set_busid = drm_pci_set_busid,
-	.set_unique = drm_pci_set_unique,
 };
 
 /**
@@ -482,6 +481,13 @@ int drm_irq_by_busid(struct drm_device *dev, void *data,
 {
 	return -EINVAL;
 }
+
+int drm_pci_set_unique(struct drm_device *dev,
+		       struct drm_master *master,
+		       struct drm_unique *u)
+{
+	return -EINVAL;
+}
 #endif
 
 EXPORT_SYMBOL(drm_pci_init);
diff --git a/include/drm/drmP.h b/include/drm/drmP.h
index f62891998388..5333659d4d0e 100644
--- a/include/drm/drmP.h
+++ b/include/drm/drmP.h
@@ -728,8 +728,6 @@ struct drm_master {
 struct drm_bus {
 	const char *(*get_name)(struct drm_device *dev);
 	int (*set_busid)(struct drm_device *dev, struct drm_master *master);
-	int (*set_unique)(struct drm_device *dev, struct drm_master *master,
-			  struct drm_unique *unique);
 };
 
 /**
@@ -1511,6 +1509,9 @@ extern drm_dma_handle_t *drm_pci_alloc(struct drm_device *dev, size_t size,
 				       size_t align);
 extern void __drm_pci_free(struct drm_device *dev, drm_dma_handle_t * dmah);
 extern void drm_pci_free(struct drm_device *dev, drm_dma_handle_t * dmah);
+extern int drm_pci_set_unique(struct drm_device *dev,
+			      struct drm_master *master,
+			      struct drm_unique *u);
 
 			       /* sysfs support (drm_sysfs.c) */
 struct drm_sysfs_class;
-- 
1.8.5.2