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int mxc_request_dma ( int *  channel,
const char *  devicename 

Allocates dma channel. If channel's value is 0, then the function allocates a free channel dynamically and sets its value to channel. Else allocates requested channel if it is free. If the channel is busy or no free channels (in dynamic allocation) -EBUSY returned.

channel pointer to channel number
devicename device name
0 on success, error code on fail

Definition at line 558 of file dma_sdma.c.

      return -ENODEV;

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