drm: Move struct drm_device.hose to legacy section

The field is only relevant for legacy DRM drivers. Its only non-legacy
user in the DRM core is in drm_file.c. This code is now protected by
CONFIG_DRM_LEGACY. Radeon, the only driver that used the field, has been
changed to maintain it's own copy.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Christian König <christian.koenig@amd.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210112081035.6882-7-tzimmermann@suse.de

drivers/gpu/drm/drm_file.c

@@ -367,6 +367,7 @@ static int drm_open_helper(struct file *filp, struct drm_minor *minor)
 	list_add(&priv->lhead, &dev->filelist);
 	mutex_unlock(&dev->filelist_mutex);
 
+#ifdef CONFIG_DRM_LEGACY
 #ifdef __alpha__
 	/*
 	 * Default the hose
@@ -386,6 +387,7 @@ static int drm_open_helper(struct file *filp, struct drm_minor *minor)
 				dev->hose = b->sysdata;
 		}
 	}
+#endif
 #endif
 
 	return 0;

include/drm/drm_device.h

@@ -282,10 +282,6 @@ struct drm_device {
 	/** @pdev: PCI device structure */
 	struct pci_dev *pdev;
 
-#ifdef __alpha__
-	/** @hose: PCI hose, only used on ALPHA platforms. */
-	struct pci_controller *hose;
-#endif
 	/** @num_crtcs: Number of CRTCs on this device */
 	unsigned int num_crtcs;
 
@@ -328,6 +324,11 @@ struct drm_device {
 	/* List of devices per driver for stealth attach cleanup */
 	struct list_head legacy_dev_list;
 
+#ifdef __alpha__
+	/** @hose: PCI hose, only used on ALPHA platforms. */
+	struct pci_controller *hose;
+#endif
+
 	/* Context handle management - linked list of context handles */
 	struct list_head ctxlist;