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drm/ttm: delay freeing of old node during move_memcpy until after iounmap 

Drivers using their own implementation of io_mem_reserve/io_mem_free are
likely to store the tracking information for the map in mem.mm_node, so
it can't be freed while still mapped.

Signed-off-by: Ben Skeggs<bskeggs@redhat.com>
Reviewed-by: Thomas Hellstrom <thellstrom@vmware.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
hifive-unleashed-5.1
Ben Skeggs 2010-12-16 14:47:46 +10:00 committed by Dave Airlie
parent 99ee7fac18
commit b921bae2ee
1 changed files with 1 additions and 1 deletions
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2
drivers/gpu/drm/ttm/ttm_bo_util.c
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@ -370,7 +370,6 @@ int ttm_bo_move_memcpy(struct ttm_buffer_object *bo,
}
mb();
out2:
ttm_bo_free_old_node(bo);
old_copy = *old_mem;
*old_mem = *new_mem;
new_mem->mm_node = NULL;
@ -385,6 +384,7 @@ out1:
ttm_mem_reg_iounmap(bdev, old_mem, new_iomap);
out:
ttm_mem_reg_iounmap(bdev, &old_copy, old_iomap);
ttm_bo_mem_put(bo, &old_copy);
return ret;
}
EXPORT_SYMBOL(ttm_bo_move_memcpy);