[PATCH] mm: fix dma_poor_create

[Yinghai Lu]

dev_to_node could return node that without RAM. So check it before use it in 
kmalloc_node

Signed-off-by: Yinghai Lu <[EMAIL PROTECTED]>

diff --git a/mm/dmapool.c b/mm/dmapool.c
index 34aaac4..6be5b5a 100644
--- a/mm/dmapool.c
+++ b/mm/dmapool.c
@@ -128,6 +128,7 @@ struct dma_pool *dma_pool_create(const char *name, struct 
device *dev,
 {
        struct dma_pool *retval;
        size_t allocation;
+       int node;
 
        if (align == 0) {
                align = 1;
@@ -152,7 +153,11 @@ struct dma_pool *dma_pool_create(const char *name, struct 
device *dev,
                return NULL;
        }
 
-       retval = kmalloc_node(sizeof(*retval), GFP_KERNEL, dev_to_node(dev));
+       node = dev_to_node(dev);
+       if (node == -1 || !node_online(node))
+               node = numa_node_id();
+
+       retval = kmalloc_node(sizeof(*retval), GFP_KERNEL, node);
        if (!retval)
                return retval;
 
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