cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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cxd2880_common.c (493B)

      1// SPDX-License-Identifier: GPL-2.0
      2/*
      3 * cxd2880_common.c
      4 * Sony CXD2880 DVB-T2/T tuner + demodulator driver
      5 * common functions
      6 *
      7 * Copyright (C) 2016, 2017, 2018 Sony Semiconductor Solutions Corporation
      8 */
      9
     10#include "cxd2880_common.h"
     11
     12int cxd2880_convert2s_complement(u32 value, u32 bitlen)
     13{
     14	if (!bitlen || bitlen >= 32)
     15		return (int)value;
     16
     17	if (value & (u32)(1 << (bitlen - 1)))
     18		return (int)(GENMASK(31, bitlen) | value);
     19	else
     20		return (int)(GENMASK(bitlen - 1, 0) & value);
     21}