[PATCH 4.19 636/639] IB/iser: Fix dma_nents type definition

[Greg Kroah-Hartman]

From: Max Gurtovoy <maxg@xxxxxxxxxxxx>

[ Upstream commit c1545f1a200f4adc4ef8dd534bf33e2f1aa22c2f ]

The retured value from ib_dma_map_sg saved in dma_nents variable. To avoid
future mismatch between types, define dma_nents as an integer instead of
unsigned.

Fixes: 57b26497fabe ("IB/iser: Pass the correct number of entries for dma mapped SGL")
Reported-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx>
Reviewed-by: Israel Rukshin <israelr@xxxxxxxxxxxx>
Signed-off-by: Max Gurtovoy <maxg@xxxxxxxxxxxx>
Acked-by: Sagi Grimberg <sagi@xxxxxxxxxxx>
Reviewed-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx>
Signed-off-by: Jason Gunthorpe <jgg@xxxxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
 drivers/infiniband/ulp/iser/iscsi_iser.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/infiniband/ulp/iser/iscsi_iser.h b/drivers/infiniband/ulp/iser/iscsi_iser.h
index 120b408295603..a7aeaa0c6fbc9 100644
--- a/drivers/infiniband/ulp/iser/iscsi_iser.h
+++ b/drivers/infiniband/ulp/iser/iscsi_iser.h
@@ -197,7 +197,7 @@ struct iser_data_buf {
 	struct scatterlist *sg;
 	int                size;
 	unsigned long      data_len;
-	unsigned int       dma_nents;
+	int                dma_nents;
 };
 
 /* fwd declarations */
-- 
2.20.1