centos man page for copy_to_user_fromio

COPY_TO_USER_FROMIO(9)					  Management of Cards and Device				    COPY_TO_USER_FROMIO(9)

NAME
       copy_to_user_fromio - copy data from mmio-space to user-space

SYNOPSIS
       int copy_to_user_fromio(void __user * dst, const volatile void __iomem * src, size_t count);

ARGUMENTS
       dst
	   the destination pointer on user-space

       src
	   the source pointer on mmio

       count
	   the data size to copy in bytes

DESCRIPTION
       Copies the data from mmio-space to user-space.

RETURN
       Zero if successful, or non-zero on failure.

COPYRIGHT
Kernel Hackers Manual 3.10					     June 2014						    COPY_TO_USER_FROMIO(9)