Ubuntu manuals

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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.

       Returns zero if successful, or non-zero on failure.