Is there a difference between initiating RX DMA from user mode/privileged mode?

See here:
http://www.keil.com/forum/18299/

Once I get my DMA controller interrupt the processor with the payload received by the SSP controller, no further interrupts occur. Is there a difference between configuring a DMA channel is user mode/privileged mode (I am aware of bit 28 in the channel configuration register) ? I only use DMA to receive data. I'm stuck...!

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