dma_pool_alloc(9) [suse man page]

DMA_POOL_ALLOC(9)					    Memory Management in Linux						 DMA_POOL_ALLOC(9)

NAME

       dma_pool_alloc - get a block of consistent memory

SYNOPSIS

       void * dma_pool_alloc(struct dma_pool * pool, gfp_t mem_flags, dma_addr_t * handle);

ARGUMENTS

       pool
	   dma pool that will produce the block

       mem_flags
	   GFP_* bitmask

       handle
	   pointer to dma address of block

DESCRIPTION

       This returns the kernel virtual address of a currently unused block, and reports its dma address through the handle. If such a memory block
       can't be allocated, NULL is returned.

COPYRIGHT

Kernel Hackers Manual 2.6.					     July 2010							 DMA_POOL_ALLOC(9)

PARPORT_REGISTER_POR(9) 				       Parallel Port Devices					   PARPORT_REGISTER_POR(9)

NAME

       parport_register_port - register a parallel port

SYNOPSIS

       struct parport * parport_register_port(unsigned long base, int irq, int dma, struct parport_operations * ops);

ARGUMENTS

       base
	   base I/O address

       irq
	   IRQ line

       dma
	   DMA channel

       ops
	   pointer to the port driver's port operations structure

DESCRIPTION

       When a parallel port (lowlevel) driver finds a port that should be made available to parallel port device drivers, it should call
       parport_register_port. The base, irq, and dma parameters are for the convenience of port drivers, and for ports where they aren't
       meaningful needn't be set to anything special. They can be altered afterwards by adjusting the relevant members of the parport structure
       that is returned and represents the port. They should not be tampered with after calling parport_announce_port, however.

       If there are parallel port device drivers in the system that have registered themselves using parport_register_driver, they are not told
       about the port at this time; that is done by parport_announce_port.

       The ops structure is allocated by the caller, and must not be deallocated before calling parport_remove_port.

       If there is no memory to allocate a new parport structure, this function will return NULL.

COPYRIGHT

Kernel Hackers Manual 2.6.					     July 2010						   PARPORT_REGISTER_POR(9)