drm: un-inline drm_legacy_findmap()

Un-inline drm_legacy_findmap() to not depend on struct drm_device
definition within drm_legacy.h, so that a forward declaration suffices.

Also include drm_hashtab.h in drm_legacy.h to make it more
self-contained. Make it easier to drop drmP.h includes.

v2: avoid including drm_device.h by un-inlining (Daniel)

[Updated commit message per Laurent's review while applying.]

Cc: Sam Ravnborg <sam@ravnborg.org>
Cc: Daniel Vetter <daniel@ffwll.ch>
Cc: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20181228130446.22141-1-jani.nikula@intel.com

1 files changed, 11 insertions, 0 deletions

diff --git a/drivers/gpu/drm/drm_bufs.c b/drivers/gpu/drm/drm_bufs.c
index d7d10cabb9bb..a39ab2193bfe 100644
--- a/drivers/gpu/drm/drm_bufs.c
+++ b/drivers/gpu/drm/drm_bufs.c
@@ -377,6 +377,17 @@ int drm_legacy_addmap(struct drm_device *dev, resource_size_t offset,
 }
 EXPORT_SYMBOL(drm_legacy_addmap);
 
+struct drm_local_map *drm_legacy_findmap(struct drm_device *dev,
+                                         unsigned int token)
+{
+        struct drm_map_list *_entry;
+        list_for_each_entry(_entry, &dev->maplist, head)
+                if (_entry->user_token == token)
+                        return _entry->map;
+        return NULL;
+}
+EXPORT_SYMBOL(drm_legacy_findmap);
+
 /**
  * Ioctl to specify a range of memory that is available for mapping by a
  * non-root process.