linux-kernel - drivers/firmware/tegra/bpmp.c:204:17: sparse: sparse: incorrect type in argument 2 (different address spaces)

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Message-ID: <202209010603.Ui3eZ89D-lkp@intel.com>
Date:   Thu, 1 Sep 2022 06:24:15 +0800
From:   kernel test robot <lkp@...el.com>
To:     Timo Alho <talho@...dia.com>
Cc:     kbuild-all@...ts.01.org, linux-kernel@...r.kernel.org,
        Thierry Reding <treding@...dia.com>,
        Mikko Perttunen <mperttunen@...dia.com>
Subject: drivers/firmware/tegra/bpmp.c:204:17: sparse: sparse: incorrect type
 in argument 2 (different address spaces)

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   c5e4d5e99162ba8025d58a3af7ad103f155d2df7
commit: a4740b148a04dc60e14fe6a1dfe216d3bae214fd firmware: tegra: bpmp: Do only aligned access to IPC memory area
date:   10 weeks ago
config: arm-randconfig-s042-20220831 (https://download.01.org/0day-ci/archive/20220901/202209010603.Ui3eZ89D-lkp@intel.com/config)
compiler: arm-linux-gnueabi-gcc (GCC) 12.1.0
reproduce:
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # apt-get install sparse
        # sparse version: v0.6.4-39-gce1a6720-dirty
        # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=a4740b148a04dc60e14fe6a1dfe216d3bae214fd
        git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
        git fetch --no-tags linus master
        git checkout a4740b148a04dc60e14fe6a1dfe216d3bae214fd
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' O=build_dir ARCH=arm SHELL=/bin/bash drivers/firmware/tegra/

If you fix the issue, kindly add following tag where applicable
Reported-by: kernel test robot <lkp@...el.com>

sparse warnings: (new ones prefixed by >>)
>> drivers/firmware/tegra/bpmp.c:204:17: sparse: sparse: incorrect type in argument 2 (different address spaces) @@     expected void const volatile [noderef] __iomem *from @@     got unsigned char * @@
   drivers/firmware/tegra/bpmp.c:204:17: sparse:     expected void const volatile [noderef] __iomem *from
   drivers/firmware/tegra/bpmp.c:204:17: sparse:     got unsigned char *
>> drivers/firmware/tegra/bpmp.c:248:17: sparse: sparse: incorrect type in argument 1 (different address spaces) @@     expected void volatile [noderef] __iomem *to @@     got unsigned char * @@
   drivers/firmware/tegra/bpmp.c:248:17: sparse:     expected void volatile [noderef] __iomem *to
   drivers/firmware/tegra/bpmp.c:248:17: sparse:     got unsigned char *
   drivers/firmware/tegra/bpmp.c:423:17: sparse: sparse: incorrect type in argument 1 (different address spaces) @@     expected void volatile [noderef] __iomem *to @@     got unsigned char * @@
   drivers/firmware/tegra/bpmp.c:423:17: sparse:     expected void volatile [noderef] __iomem *to
   drivers/firmware/tegra/bpmp.c:423:17: sparse:     got unsigned char *
   drivers/firmware/tegra/bpmp.c:505:53: sparse: sparse: incorrect type in initializer (different base types) @@     expected unsigned int [usertype] mrq @@     got restricted __le32 [usertype] @@
   drivers/firmware/tegra/bpmp.c:505:53: sparse:     expected unsigned int [usertype] mrq
   drivers/firmware/tegra/bpmp.c:505:53: sparse:     got restricted __le32 [usertype]

vim +204 drivers/firmware/tegra/bpmp.c

   197	
   198	static ssize_t __tegra_bpmp_channel_read(struct tegra_bpmp_channel *channel,
   199						 void *data, size_t size, int *ret)
   200	{
   201		int err;
   202	
   203		if (data && size > 0)
 > 204			memcpy_fromio(data, channel->ib->data, size);
   205	
   206		err = tegra_bpmp_ack_response(channel);
   207		if (err < 0)
   208			return err;
   209	
   210		*ret = channel->ib->code;
   211	
   212		return 0;
   213	}
   214	
   215	static ssize_t tegra_bpmp_channel_read(struct tegra_bpmp_channel *channel,
   216					       void *data, size_t size, int *ret)
   217	{
   218		struct tegra_bpmp *bpmp = channel->bpmp;
   219		unsigned long flags;
   220		ssize_t err;
   221		int index;
   222	
   223		index = tegra_bpmp_channel_get_thread_index(channel);
   224		if (index < 0) {
   225			err = index;
   226			goto unlock;
   227		}
   228	
   229		spin_lock_irqsave(&bpmp->lock, flags);
   230		err = __tegra_bpmp_channel_read(channel, data, size, ret);
   231		clear_bit(index, bpmp->threaded.allocated);
   232		spin_unlock_irqrestore(&bpmp->lock, flags);
   233	
   234	unlock:
   235		up(&bpmp->threaded.lock);
   236	
   237		return err;
   238	}
   239	
   240	static ssize_t __tegra_bpmp_channel_write(struct tegra_bpmp_channel *channel,
   241						  unsigned int mrq, unsigned long flags,
   242						  const void *data, size_t size)
   243	{
   244		channel->ob->code = mrq;
   245		channel->ob->flags = flags;
   246	
   247		if (data && size > 0)
 > 248			memcpy_toio(channel->ob->data, data, size);
   249	
   250		return tegra_bpmp_post_request(channel);
   251	}
   252	

-- 
0-DAY CI Kernel Test Service
https://01.org/lkp