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mlxsw: Use refcount_t for reference counting
[ Upstream commit 1267f72 ] mlxsw driver uses 'unsigned int' for reference counters in several structures. Instead, use refcount_t type which allows us to catch overflow and underflow issues. Change the type of the counters and use the appropriate API. Signed-off-by: Amit Cohen <amcohen@nvidia.com> Reviewed-by: Ido Schimmel <idosch@nvidia.com> Signed-off-by: Ido Schimmel <idosch@nvidia.com> Signed-off-by: Petr Machata <petrm@nvidia.com> Reviewed-by: Simon Horman <horms@kernel.org> Signed-off-by: Paolo Abeni <pabeni@redhat.com> Stable-dep-of: 627f9c1 ("mlxsw: spectrum_acl_tcam: Fix race in region ID allocation") Signed-off-by: Sasha Levin <sashal@kernel.org>
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