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vdpa/mlx5: Fix possible failure in umem size calculation
[ Upstream commit 71ab6a7 ] umem size is a 32 bit unsigned value so assigning it to an int could cause false failures. Set the calculated value inside the function and modify function name to reflect the fact it updates the size. This bug was found during code review but never had real impact to this date. Fixes: 1a86b37 ("vdpa/mlx5: Add VDPA driver for supported mlx5 devices") Signed-off-by: Eli Cohen <elic@nvidia.com> Link: https://lore.kernel.org/r/20210530090349.8360-1-elic@nvidia.com Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Acked-by: Jason Wang <jasowang@redhat.com> Signed-off-by: Sasha Levin <sashal@kernel.org>
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