request_dma
int request_dma(unsigned int chan, const char *device_id)
#define request_dma(dmanr, device_id) (0)
int request_dma(unsigned int chan, const char *dev_id)
static inline int request_dma(unsigned int dmanr, const char *device_id)
int request_dma(unsigned int dmanr, const char *device_id)
int request_dma(unsigned int dmanr, const char * device_id)