linux-kernel - sound/sh/sh_dac_audio.c:166:51: sparse: sparse: incorrect type in argument 1 (different address spaces)

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Message-ID: <202411281337.I4M07b7i-lkp@intel.com>
Date: Thu, 28 Nov 2024 13:38:21 +0800
From: kernel test robot <lkp@...el.com>
To: Takashi Iwai <tiwai@...e.de>
Cc: oe-kbuild-all@...ts.linux.dev, linux-kernel@...r.kernel.org
Subject: sound/sh/sh_dac_audio.c:166:51: sparse: sparse: incorrect type in
 argument 1 (different address spaces)

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   b86545e02e8c22fb89218f29d381fa8e8b91d815
commit: 2f432f4702134fac27677f13aba69ed830984f75 ALSA: sh: Convert to generic PCM copy ops
date:   1 year, 3 months ago
config: sh-randconfig-r111-20241122 (https://download.01.org/0day-ci/archive/20241128/202411281337.I4M07b7i-lkp@intel.com/config)
compiler: sh4-linux-gcc (GCC) 14.2.0
reproduce: (https://download.01.org/0day-ci/archive/20241128/202411281337.I4M07b7i-lkp@intel.com/reproduce)

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@...el.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202411281337.I4M07b7i-lkp@intel.com/

sparse warnings: (new ones prefixed by >>)
>> sound/sh/sh_dac_audio.c:166:51: sparse: sparse: incorrect type in argument 1 (different address spaces) @@     expected void [noderef] __iomem *dst @@     got char * @@
   sound/sh/sh_dac_audio.c:166:51: sparse:     expected void [noderef] __iomem *dst
   sound/sh/sh_dac_audio.c:166:51: sparse:     got char *
   sound/sh/sh_dac_audio.c:185:37: sparse: sparse: incorrect type in argument 1 (different address spaces) @@     expected void volatile [noderef] __iomem * @@     got char * @@
   sound/sh/sh_dac_audio.c:185:37: sparse:     expected void volatile [noderef] __iomem *
   sound/sh/sh_dac_audio.c:185:37: sparse:     got char *
   sound/sh/sh_dac_audio.c: note: in included file:
   arch/sh/include/cpu-sh3/cpu/dac.h:38:21: sparse: sparse: incorrect type in argument 1 (different base types) @@     expected void const volatile [noderef] __iomem *ptr @@     got unsigned int @@
   arch/sh/include/cpu-sh3/cpu/dac.h:38:21: sparse:     expected void const volatile [noderef] __iomem *ptr
   arch/sh/include/cpu-sh3/cpu/dac.h:38:21: sparse:     got unsigned int
   arch/sh/include/cpu-sh3/cpu/dac.h:39:14: sparse: sparse: incorrect type in argument 1 (different base types) @@     expected void const volatile [noderef] __iomem *ptr @@     got unsigned int @@
   arch/sh/include/cpu-sh3/cpu/dac.h:39:14: sparse:     expected void const volatile [noderef] __iomem *ptr
   arch/sh/include/cpu-sh3/cpu/dac.h:39:14: sparse:     got unsigned int

vim +166 sound/sh/sh_dac_audio.c

   158	
   159	static int snd_sh_dac_pcm_copy(struct snd_pcm_substream *substream,
   160				       int channel, unsigned long pos,
   161				       struct iov_iter *src, unsigned long count)
   162	{
   163		/* channel is not used (interleaved data) */
   164		struct snd_sh_dac *chip = snd_pcm_substream_chip(substream);
   165	
 > 166		if (copy_from_iter_toio(chip->data_buffer + pos, src, count))
   167			return -EFAULT;
   168		chip->buffer_end = chip->data_buffer + pos + count;
   169	
   170		if (chip->empty) {
   171			chip->empty = 0;
   172			dac_audio_start_timer(chip);
   173		}
   174	
   175		return 0;
   176	}
   177	

-- 
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki