[PATCH 07/19] RDMA/siw: Also goto out_sem_up if pin_user_pages returns 0

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Since it is legitimate for pin_user_pages returns 0, which
means it might be dead loop here.

Signed-off-by: Guoqing Jiang <guoqing.jiang@xxxxxxxxx>
---
 drivers/infiniband/sw/siw/siw_mem.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/infiniband/sw/siw/siw_mem.c b/drivers/infiniband/sw/siw/siw_mem.c
index c5f7f1669d09..92c5776a9eed 100644
--- a/drivers/infiniband/sw/siw/siw_mem.c
+++ b/drivers/infiniband/sw/siw/siw_mem.c
@@ -423,7 +423,7 @@ struct siw_umem *siw_umem_get(u64 start, u64 len, bool writable)
 		while (nents) {
 			rv = pin_user_pages(first_page_va, nents, foll_flags,
 					    plist);
-			if (rv < 0)
+			if (rv <= 0)
 				goto out_sem_up;
 
 			umem->num_pages += rv;
-- 
2.35.3




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