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Subject[PATCH 4.4 078/312] net/mlx5: Fix masking of reserved bits in XRCD number
Date
From: Majd Dibbiny <majd@mellanox.com>

commit 9cd3411c42c5d5ba55d6e745edfe7df53c1ffa41 upstream.

Mask the reserved bits when reading the number of newly
created XRCD.

Fixes: e126ba97dba9 ('mlx5: Add driver for Mellanox Connect-IB adapters')
Signed-off-by: Majd Dibbiny <majd@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
drivers/net/ethernet/mellanox/mlx5/core/qp.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/net/ethernet/mellanox/mlx5/core/qp.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/qp.c
@@ -393,7 +393,7 @@ int mlx5_core_xrcd_alloc(struct mlx5_cor
if (out.hdr.status)
err = mlx5_cmd_status_to_err(&out.hdr);
else
- *xrcdn = be32_to_cpu(out.xrcdn);
+ *xrcdn = be32_to_cpu(out.xrcdn) & 0xffffff;

return err;
}

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