linux-kernel - [PATCH 4.4 075/132] ntb: intel: fix return value for ndev_vec

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Message-Id: <20191127203008.989261544@linuxfoundation.org>
Date:   Wed, 27 Nov 2019 21:31:06 +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, Dave Jiang <dave.jiang@...el.com>,
        Lucas Van <lucas.van@...el.com>, Jon Mason <jdmason@...zu.us>,
        Sasha Levin <sashal@...nel.org>
Subject: [PATCH 4.4 075/132] ntb: intel: fix return value for ndev_vec_mask()

From: Dave Jiang <dave.jiang@...el.com>

[ Upstream commit 7756e2b5d68c36e170a111dceea22f7365f83256 ]

ndev_vec_mask() should be returning u64 mask value instead of int.
Otherwise the mask value returned can be incorrect for larger
vectors.

Fixes: e26a5843f7f5 ("NTB: Split ntb_hw_intel and ntb_transport drivers")

Signed-off-by: Dave Jiang <dave.jiang@...el.com>
Tested-by: Lucas Van <lucas.van@...el.com>
Signed-off-by: Jon Mason <jdmason@...zu.us>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/ntb/hw/intel/ntb_hw_intel.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/ntb/hw/intel/ntb_hw_intel.c b/drivers/ntb/hw/intel/ntb_hw_intel.c
index a198f82982582..2898b39c065e3 100644
--- a/drivers/ntb/hw/intel/ntb_hw_intel.c
+++ b/drivers/ntb/hw/intel/ntb_hw_intel.c
@@ -330,7 +330,7 @@ static inline int ndev_db_clear_mask(struct intel_ntb_dev *ndev, u64 db_bits,
 	return 0;
 }
 
-static inline int ndev_vec_mask(struct intel_ntb_dev *ndev, int db_vector)
+static inline u64 ndev_vec_mask(struct intel_ntb_dev *ndev, int db_vector)
 {
 	u64 shift, mask;
 
-- 
2.20.1