parport_write man page on Scientific

parport_write man page on Scientific

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PARPORT_WRITE(9)	     Parallel Port Devices	      PARPORT_WRITE(9)

NAME
       parport_write - write a block of data to a parallel port

SYNOPSIS
       ssize_t parport_write(struct parport * port, const void * buffer,
			     size_t len);

ARGUMENTS
       port
	   port to write to

       buffer
	   data buffer (in kernel space)

       len
	   number of bytes of data to transfer

DESCRIPTION
       This will write up to len bytes of buffer to the port specified, using
       the IEEE 1284 transfer mode most recently negotiated to (using
       parport_negotiate), as long as that mode supports forward transfers
       (host to peripheral).

       It is the caller´s responsibility to ensure that the first len bytes of
       buffer are valid.

       This function returns the number of bytes transferred (if zero or
       positive), or else an error code.

COPYRIGHT
Kernel Hackers Manual 2.6.	 November 2013		      PARPORT_WRITE(9)

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