drm: Use resource_size_t for drm_get_resource_{start, len}

The DRM uses its own wrappers to obtain resources from PCI devices,
which currently convert the resource_size_t into an unsigned long.

This is broken on 32-bit platforms with >32-bit physical address
space.

This fixes them, along with a few occurences of unsigned long used
to store such a resource in drivers.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Dave Airlie <airlied@linux.ie>

1 files changed, 3 insertions, 3 deletions

diff --git a/include/drm/drmP.h b/include/drm/drmP.h
index e5f4ae989abf..34e1676b53d1 100644
--- a/include/drm/drmP.h
+++ b/include/drm/drmP.h
@@ -1173,10 +1173,10 @@ extern int drm_freebufs(struct drm_device *dev, void *data,
 extern int drm_mapbufs(struct drm_device *dev, void *data,
                        struct drm_file *file_priv);
 extern int drm_order(unsigned long size);
-extern unsigned long drm_get_resource_start(struct drm_device *dev,
+extern resource_size_t drm_get_resource_start(struct drm_device *dev,
+                                              unsigned int resource);
+extern resource_size_t drm_get_resource_len(struct drm_device *dev,
                                             unsigned int resource);
-extern unsigned long drm_get_resource_len(struct drm_device *dev,
-                                          unsigned int resource);
 
                                 /* DMA support (drm_dma.h) */
 extern int drm_dma_setup(struct drm_device *dev);