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, 2 insertions, 2 deletions

diff --git a/drivers/gpu/drm/drm_bufs.c b/drivers/gpu/drm/drm_bufs.c
index 12715d3c078d..fab899eec051 100644
--- a/drivers/gpu/drm/drm_bufs.c
+++ b/drivers/gpu/drm/drm_bufs.c
@@ -36,13 +36,13 @@
 #include <linux/vmalloc.h>
 #include "drmP.h"
 
-unsigned long drm_get_resource_start(struct drm_device *dev, unsigned int resource)
+resource_size_t drm_get_resource_start(struct drm_device *dev, unsigned int resource)
 {
         return pci_resource_start(dev->pdev, resource);
 }
 EXPORT_SYMBOL(drm_get_resource_start);
 
-unsigned long drm_get_resource_len(struct drm_device *dev, unsigned int resource)
+resource_size_t drm_get_resource_len(struct drm_device *dev, unsigned int resource)
 {
         return pci_resource_len(dev->pdev, resource);
 }