SPI DMA interrupt clear problem

Hi,

I use cc2530 channel 1 as in\out SPI.

Alone the SPI work fine, but...   when I clear channel 2 or 3 for AES purposes (DMAIRQ &= ~0x0C),

the last  bytes from the master SPI don't received, so DMA done doesn't occurred. (the length is incorrect).

I tired to switch channels but the same behavior occurred.

Thanks,

Ran