UPPER_32_BITS(9)                          Driver Basics                          UPPER_32_BITS(9)



NAME
       upper_32_bits - return bits 32-63 of a number

SYNOPSIS
       upper_32_bits(n);

ARGUMENTS
       n
           the number we're accessing

DESCRIPTION
       A basic shift-right of a 64- or 32-bit quantity. Use this to suppress the “right shift
       count >= width of type” warning when that quantity is 32-bits.

COPYRIGHT
Kernel Hackers Manual 4.8.                 January 2017                          UPPER_32_BITS(9)