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DX11 DX11 HLSL: pass SamplerState to a function?

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I have a texture sampler that I set via PSSetSamplers and define in the HLSL code as "SamplerState sampler;"  I have a function in the HLSL code that I want to pass the sampler to, like this:

 

"float4 texFunc(Texture3D table, SamplerState sampler..."

 

But I get an error on that function declaration: "syntax error: unexpected token 'sampler'"  Why is that?  How can I tell my hlsl function which sampler, defined in my cpu-side program, to use?  (I want to pass it to the function because it is common code that is called from several different shaders).

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