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path: root/drivers/char/drm/drm_scatter.c
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Diffstat (limited to 'drivers/char/drm/drm_scatter.c')
-rw-r--r--drivers/char/drm/drm_scatter.c11
1 files changed, 9 insertions, 2 deletions
diff --git a/drivers/char/drm/drm_scatter.c b/drivers/char/drm/drm_scatter.c
index 54fddb6ea2d1..ed267d49bc6a 100644
--- a/drivers/char/drm/drm_scatter.c
+++ b/drivers/char/drm/drm_scatter.c
@@ -61,6 +61,12 @@ void drm_sg_cleanup( drm_sg_mem_t *entry )
DRM_MEM_SGLISTS );
}
+#ifdef _LP64
+# define ScatterHandle(x) (unsigned int)((x >> 32) + (x & ((1L << 32) - 1)))
+#else
+# define ScatterHandle(x) (unsigned int)(x)
+#endif
+
int drm_sg_alloc( struct inode *inode, struct file *filp,
unsigned int cmd, unsigned long arg )
{
@@ -133,12 +139,13 @@ int drm_sg_alloc( struct inode *inode, struct file *filp,
*/
memset( entry->virtual, 0, pages << PAGE_SHIFT );
- entry->handle = (unsigned long)entry->virtual;
+ entry->handle = ScatterHandle((unsigned long)entry->virtual);
DRM_DEBUG( "sg alloc handle = %08lx\n", entry->handle );
DRM_DEBUG( "sg alloc virtual = %p\n", entry->virtual );
- for ( i = entry->handle, j = 0 ; j < pages ; i += PAGE_SIZE, j++ ) {
+ for (i = (unsigned long)entry->virtual, j = 0; j < pages;
+ i += PAGE_SIZE, j++) {
entry->pagelist[j] = vmalloc_to_page((void *)i);
if (!entry->pagelist[j])
goto failed;