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drm: fixup drm bufs being just under the EOM

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If the mapping was just under the end of memory it would fail.
Lets DRM start on my PCI card.

Signed-off-by: Dave Airlie <airlied@linux.ie>
This commit is contained in:
Dave Airlie 2006-01-11 20:48:09 +11:00 committed by Dave Airlie
parent f8e0f2905b
commit 8d2ea62581
1 changed files with 1 additions and 1 deletions
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2
drivers/char/drm/drm_bufs.c
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@ -154,7 +154,7 @@ static int drm_addmap_core(drm_device_t * dev, unsigned int offset,
case _DRM_REGISTERS: case _DRM_REGISTERS:
case _DRM_FRAME_BUFFER: case _DRM_FRAME_BUFFER:
#if !defined(__sparc__) && !defined(__alpha__) && !defined(__ia64__) && !defined(__powerpc64__) && !defined(__x86_64__) #if !defined(__sparc__) && !defined(__alpha__) && !defined(__ia64__) && !defined(__powerpc64__) && !defined(__x86_64__)
if (map->offset + map->size < map->offset || if (map->offset + (map->size-1) < map->offset ||
map->offset < virt_to_phys(high_memory)) { map->offset < virt_to_phys(high_memory)) {
drm_free(map, sizeof(*map), DRM_MEM_MAPS); drm_free(map, sizeof(*map), DRM_MEM_MAPS);
return -EINVAL; return -EINVAL;