From: Eli Cohen <elic@nvidia.com>
To: <mst@redhat.com>, <jasowang@redhat.com>,
<linux-kernel@vger.kernel.org>,
<virtualization@lists.linux-foundation.org>,
<netdev@vger.kernel.org>
Cc: <elic@nvidia.com>
Subject: [PATCH] vdpa/mlx5: Fix wrong use of bit numbers
Date: Mon, 1 Mar 2021 08:28:17 +0200 [thread overview]
Message-ID: <20210301062817.39331-1-elic@nvidia.com> (raw)
VIRTIO_F_VERSION_1 is a bit number. Use BIT_ULL() with mask
conditionals.
Also, in mlx5_vdpa_is_little_endian() use BIT_ULL for consistency with
the rest of the code.
Fixes: 1a86b377aa21 ("vdpa/mlx5: Add VDPA driver for supported mlx5 devices")
Signed-off-by: Eli Cohen <elic@nvidia.com>
---
drivers/vdpa/mlx5/net/mlx5_vnet.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/vdpa/mlx5/net/mlx5_vnet.c b/drivers/vdpa/mlx5/net/mlx5_vnet.c
index dc7031132fff..7d21b857a94a 100644
--- a/drivers/vdpa/mlx5/net/mlx5_vnet.c
+++ b/drivers/vdpa/mlx5/net/mlx5_vnet.c
@@ -821,7 +821,7 @@ static int create_virtqueue(struct mlx5_vdpa_net *ndev, struct mlx5_vdpa_virtque
MLX5_SET(virtio_q, vq_ctx, event_qpn_or_msix, mvq->fwqp.mqp.qpn);
MLX5_SET(virtio_q, vq_ctx, queue_size, mvq->num_ent);
MLX5_SET(virtio_q, vq_ctx, virtio_version_1_0,
- !!(ndev->mvdev.actual_features & VIRTIO_F_VERSION_1));
+ !!(ndev->mvdev.actual_features & BIT_ULL(VIRTIO_F_VERSION_1)));
MLX5_SET64(virtio_q, vq_ctx, desc_addr, mvq->desc_addr);
MLX5_SET64(virtio_q, vq_ctx, used_addr, mvq->device_addr);
MLX5_SET64(virtio_q, vq_ctx, available_addr, mvq->driver_addr);
@@ -1578,7 +1578,7 @@ static void teardown_virtqueues(struct mlx5_vdpa_net *ndev)
static inline bool mlx5_vdpa_is_little_endian(struct mlx5_vdpa_dev *mvdev)
{
return virtio_legacy_is_little_endian() ||
- (mvdev->actual_features & (1ULL << VIRTIO_F_VERSION_1));
+ (mvdev->actual_features & BIT_ULL(VIRTIO_F_VERSION_1));
}
static __virtio16 cpu_to_mlx5vdpa16(struct mlx5_vdpa_dev *mvdev, u16 val)
--
2.30.1
next reply other threads:[~2021-03-01 6:32 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-03-01 6:28 Eli Cohen [this message]
2021-03-01 7:52 ` [PATCH] vdpa/mlx5: Fix wrong use of bit numbers Jason Wang
2021-03-01 15:33 ` Michael S. Tsirkin
2021-03-02 5:23 ` Eli Cohen
2021-03-02 11:24 ` Michael S. Tsirkin
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