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-rw-r--r--lib/sg_pool.c6
1 files changed, 4 insertions, 2 deletions
diff --git a/lib/sg_pool.c b/lib/sg_pool.c
index b3b8cf62ff49..f1cc8372df67 100644
--- a/lib/sg_pool.c
+++ b/lib/sg_pool.c
@@ -102,7 +102,9 @@ EXPORT_SYMBOL_GPL(sg_free_table_chained);
*
* Description:
* Allocate and chain SGLs in an sg table. If @nents@ is larger than
- * @nents_first_chunk a chained sg table will be setup.
+ * @nents_first_chunk a chained sg table will be setup. @first_chunk is
+ * ignored if nents_first_chunk <= 1 because user expects the SGL points
+ * non-chain SGL.
*
**/
int sg_alloc_table_chained(struct sg_table *table, int nents,
@@ -121,7 +123,7 @@ int sg_alloc_table_chained(struct sg_table *table, int nents,
}
/* User supposes that the 1st SGL includes real entry */
- if (nents_first_chunk == 1) {
+ if (nents_first_chunk <= 1) {
first_chunk = NULL;
nents_first_chunk = 0;
}