[soc:broadcom/drivers 2/4] drivers/soc/bcm/bcm63xx/bcm-pmb.c:103:45: sparse: sparse: cast to restricted __le32

From: kernel test robot <lkp@intel.com>
To: "Rafał Miłecki" <rafal@milecki.pl>
Cc: Florian Fainelli <f.fainelli@gmail.com>,
	arm@kernel.org, kbuild-all@lists.01.org,
	linux-arm-kernel@lists.infradead.org
Subject: [soc:broadcom/drivers 2/4] drivers/soc/bcm/bcm63xx/bcm-pmb.c:103:45: sparse: sparse: cast to restricted __le32
Date: Thu, 11 Feb 2021 05:48:33 +0800	[thread overview]
Message-ID: <202102110531.Y3nmtX3o-lkp@intel.com> (raw)

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tree:   https://git.kernel.org/pub/scm/linux/kernel/git/soc/soc.git broadcom/drivers
head:   8b8f095b9076ca61107c0910c9273afd1dfa1f04
commit: 8bcac4011ebe0dbdd46fd55b036ee855c95702d3 [2/4] soc: bcm: add PM driver for Broadcom's PMB
config: i386-randconfig-s002-20210211 (attached as .config)
compiler: gcc-9 (Debian 9.3.0-15) 9.3.0
reproduce:
        # apt-get install sparse
        # sparse version: v0.6.3-215-g0fb77bb6-dirty
        # https://git.kernel.org/pub/scm/linux/kernel/git/soc/soc.git/commit/?id=8bcac4011ebe0dbdd46fd55b036ee855c95702d3
        git remote add soc https://git.kernel.org/pub/scm/linux/kernel/git/soc/soc.git
        git fetch --no-tags soc broadcom/drivers
        git checkout 8bcac4011ebe0dbdd46fd55b036ee855c95702d3
        # save the attached .config to linux build tree
        make W=1 C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' ARCH=i386 

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>


"sparse warnings: (new ones prefixed by >>)"
   drivers/soc/bcm/bcm63xx/bcm-pmb.c:103:65: sparse: sparse: cast to restricted __be32
   drivers/soc/bcm/bcm63xx/bcm-pmb.c:103:65: sparse: sparse: cast to restricted __be32
   drivers/soc/bcm/bcm63xx/bcm-pmb.c:103:65: sparse: sparse: cast to restricted __be32
   drivers/soc/bcm/bcm63xx/bcm-pmb.c:103:65: sparse: sparse: cast to restricted __be32
   drivers/soc/bcm/bcm63xx/bcm-pmb.c:103:65: sparse: sparse: cast to restricted __be32
   drivers/soc/bcm/bcm63xx/bcm-pmb.c:103:65: sparse: sparse: cast to restricted __be32
>> drivers/soc/bcm/bcm63xx/bcm-pmb.c:103:45: sparse: sparse: cast to restricted __le32
>> drivers/soc/bcm/bcm63xx/bcm-pmb.c:115:36: sparse: sparse: restricted __le32 degrades to integer
   drivers/soc/bcm/bcm63xx/bcm-pmb.c:115:55: sparse: sparse: restricted __be32 degrades to integer

vim +103 drivers/soc/bcm/bcm63xx/bcm-pmb.c

    90	
    91	static int bcm_pmb_bpcm_read(struct bcm_pmb *pmb, int bus, u8 device,
    92				     int offset, u32 *val)
    93	{
    94		void __iomem *base = pmb->base + bus * 0x20;
    95		unsigned long flags;
    96		int err;
    97	
    98		spin_lock_irqsave(&pmb->lock, flags);
    99		err = bpcm_rd(base, device, offset, val);
   100		spin_unlock_irqrestore(&pmb->lock, flags);
   101	
   102		if (!err)
 > 103			*val = pmb->little_endian ? le32_to_cpu(*val) : be32_to_cpu(*val);
   104	
   105		return err;
   106	}
   107	
   108	static int bcm_pmb_bpcm_write(struct bcm_pmb *pmb, int bus, u8 device,
   109				      int offset, u32 val)
   110	{
   111		void __iomem *base = pmb->base + bus * 0x20;
   112		unsigned long flags;
   113		int err;
   114	
 > 115		val = pmb->little_endian ? cpu_to_le32(val) : cpu_to_be32(val);
   116	
   117		spin_lock_irqsave(&pmb->lock, flags);
   118		err = bpcm_wr(base, device, offset, val);
   119		spin_unlock_irqrestore(&pmb->lock, flags);
   120	
   121		return err;
   122	}
   123	

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org

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