linux-kernel - [PATCH 4.19 636/639] IB/iser: Fix dma

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Message-Id: <20200124093209.316739750@linuxfoundation.org>
Date:   Fri, 24 Jan 2020 10:33:26 +0100
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Dan Carpenter <dan.carpenter@...cle.com>,
        Israel Rukshin <israelr@...lanox.com>,
        Max Gurtovoy <maxg@...lanox.com>,
        Sagi Grimberg <sagi@...mberg.me>,
        Jason Gunthorpe <jgg@...lanox.com>,
        Sasha Levin <sashal@...nel.org>
Subject: [PATCH 4.19 636/639] IB/iser: Fix dma_nents type definition

From: Max Gurtovoy <maxg@...lanox.com>

[ 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@...cle.com>
Reviewed-by: Israel Rukshin <israelr@...lanox.com>
Signed-off-by: Max Gurtovoy <maxg@...lanox.com>
Acked-by: Sagi Grimberg <sagi@...mberg.me>
Reviewed-by: Dan Carpenter <dan.carpenter@...cle.com>
Signed-off-by: Jason Gunthorpe <jgg@...lanox.com>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 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