The end field of struct resource is resource_size_t, so on 32-bit
targets, this is a 32-bit value. This results in a compiler warning of
"warning: comparison of distinct pointer types lacks a cast". Fix it by
making max_iomem resource_size_t to match the end field.

Fixes: (82626363a217 "drm: add func to get max iomem address v2")
Signed-off-by: David Lechner <da...@lechnology.com>
---
 drivers/gpu/drm/drm_memory.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/drm_memory.c b/drivers/gpu/drm/drm_memory.c
index 7ca500b..3c54044 100644
--- a/drivers/gpu/drm/drm_memory.c
+++ b/drivers/gpu/drm/drm_memory.c
@@ -153,7 +153,7 @@ EXPORT_SYMBOL(drm_legacy_ioremapfree);
 u64 drm_get_max_iomem(void)
 {
        struct resource *tmp;
-       u64 max_iomem = 0;
+       resource_size_t max_iomem = 0;
 
        for (tmp = iomem_resource.child; tmp; tmp = tmp->sibling) {
                max_iomem = max(max_iomem,  tmp->end);
-- 
2.7.4

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