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From: kernel test robot <lkp@intel.com>
To: "Ville Syrjälä" <ville.syrjala@linux.intel.com>
Cc: oe-kbuild-all@lists.linux.dev, dri-devel@lists.freedesktop.org,
	Tomi Valkeinen <tomi.valkeinen@ideasonboard.com>
Subject: [drm-misc:drm-misc-next 7/10] drivers/gpu/drm/omapdrm/omap_gem.c:757:42: sparse: sparse: cast truncates bits from constant value (10000 becomes 0)
Date: Mon, 13 May 2024 20:18:53 +0800	[thread overview]
Message-ID: <202405132008.ZKR6oYcm-lkp@intel.com> (raw)

Hi Ville,

First bad commit (maybe != root cause):

tree:   git://anongit.freedesktop.org/drm/drm-misc drm-misc-next
head:   11cdc8f2bde4bc548da6f995556c4b7183431088
commit: dc6fcaaba5a5411237d042a26c4d46689f3346bb [7/10] drm/omap: Allow build with COMPILE_TEST=y
config: powerpc64-randconfig-r131-20240513 (https://download.01.org/0day-ci/archive/20240513/202405132008.ZKR6oYcm-lkp@intel.com/config)
compiler: powerpc64-linux-gcc (GCC) 13.2.0
reproduce: (https://download.01.org/0day-ci/archive/20240513/202405132008.ZKR6oYcm-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@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202405132008.ZKR6oYcm-lkp@intel.com/

sparse warnings: (new ones prefixed by >>)
>> drivers/gpu/drm/omapdrm/omap_gem.c:757:42: sparse: sparse: cast truncates bits from constant value (10000 becomes 0)
   drivers/gpu/drm/omapdrm/omap_gem.c: note: in included file (through include/linux/smp.h, include/linux/lockdep.h, include/linux/spinlock.h, ...):
   include/linux/list.h:83:21: sparse: sparse: self-comparison always evaluates to true
   drivers/gpu/drm/omapdrm/omap_gem.c:1503:65: sparse: sparse: cast truncates bits from constant value (10000 becomes 0)

vim +757 drivers/gpu/drm/omapdrm/omap_gem.c

8b6b569eac2e74 drivers/staging/omapdrm/omap_gem.c Rob Clark       2012-05-17  744  
86ad0397250c58 drivers/gpu/drm/omapdrm/omap_gem.c Ivaylo Dimitrov 2022-01-19  745  static int omap_gem_pin_tiler(struct drm_gem_object *obj)
86ad0397250c58 drivers/gpu/drm/omapdrm/omap_gem.c Ivaylo Dimitrov 2022-01-19  746  {
86ad0397250c58 drivers/gpu/drm/omapdrm/omap_gem.c Ivaylo Dimitrov 2022-01-19  747  	struct omap_gem_object *omap_obj = to_omap_bo(obj);
86ad0397250c58 drivers/gpu/drm/omapdrm/omap_gem.c Ivaylo Dimitrov 2022-01-19  748  	u32 npages = obj->size >> PAGE_SHIFT;
86ad0397250c58 drivers/gpu/drm/omapdrm/omap_gem.c Ivaylo Dimitrov 2022-01-19  749  	enum tiler_fmt fmt = gem2fmt(omap_obj->flags);
86ad0397250c58 drivers/gpu/drm/omapdrm/omap_gem.c Ivaylo Dimitrov 2022-01-19  750  	struct tiler_block *block;
86ad0397250c58 drivers/gpu/drm/omapdrm/omap_gem.c Ivaylo Dimitrov 2022-01-19  751  	int ret;
86ad0397250c58 drivers/gpu/drm/omapdrm/omap_gem.c Ivaylo Dimitrov 2022-01-19  752  
86ad0397250c58 drivers/gpu/drm/omapdrm/omap_gem.c Ivaylo Dimitrov 2022-01-19  753  	BUG_ON(omap_obj->block);
86ad0397250c58 drivers/gpu/drm/omapdrm/omap_gem.c Ivaylo Dimitrov 2022-01-19  754  
86ad0397250c58 drivers/gpu/drm/omapdrm/omap_gem.c Ivaylo Dimitrov 2022-01-19  755  	if (omap_obj->flags & OMAP_BO_TILED_MASK) {
86ad0397250c58 drivers/gpu/drm/omapdrm/omap_gem.c Ivaylo Dimitrov 2022-01-19  756  		block = tiler_reserve_2d(fmt, omap_obj->width, omap_obj->height,
86ad0397250c58 drivers/gpu/drm/omapdrm/omap_gem.c Ivaylo Dimitrov 2022-01-19 @757  					 PAGE_SIZE);
86ad0397250c58 drivers/gpu/drm/omapdrm/omap_gem.c Ivaylo Dimitrov 2022-01-19  758  	} else {
86ad0397250c58 drivers/gpu/drm/omapdrm/omap_gem.c Ivaylo Dimitrov 2022-01-19  759  		block = tiler_reserve_1d(obj->size);
86ad0397250c58 drivers/gpu/drm/omapdrm/omap_gem.c Ivaylo Dimitrov 2022-01-19  760  	}
86ad0397250c58 drivers/gpu/drm/omapdrm/omap_gem.c Ivaylo Dimitrov 2022-01-19  761  
86ad0397250c58 drivers/gpu/drm/omapdrm/omap_gem.c Ivaylo Dimitrov 2022-01-19  762  	if (IS_ERR(block)) {
86ad0397250c58 drivers/gpu/drm/omapdrm/omap_gem.c Ivaylo Dimitrov 2022-01-19  763  		ret = PTR_ERR(block);
86ad0397250c58 drivers/gpu/drm/omapdrm/omap_gem.c Ivaylo Dimitrov 2022-01-19  764  		dev_err(obj->dev->dev, "could not remap: %d (%d)\n", ret, fmt);
86ad0397250c58 drivers/gpu/drm/omapdrm/omap_gem.c Ivaylo Dimitrov 2022-01-19  765  		goto fail;
86ad0397250c58 drivers/gpu/drm/omapdrm/omap_gem.c Ivaylo Dimitrov 2022-01-19  766  	}
86ad0397250c58 drivers/gpu/drm/omapdrm/omap_gem.c Ivaylo Dimitrov 2022-01-19  767  
86ad0397250c58 drivers/gpu/drm/omapdrm/omap_gem.c Ivaylo Dimitrov 2022-01-19  768  	/* TODO: enable async refill.. */
86ad0397250c58 drivers/gpu/drm/omapdrm/omap_gem.c Ivaylo Dimitrov 2022-01-19  769  	ret = tiler_pin(block, omap_obj->pages, npages, omap_obj->roll, true);
86ad0397250c58 drivers/gpu/drm/omapdrm/omap_gem.c Ivaylo Dimitrov 2022-01-19  770  	if (ret) {
86ad0397250c58 drivers/gpu/drm/omapdrm/omap_gem.c Ivaylo Dimitrov 2022-01-19  771  		tiler_release(block);
86ad0397250c58 drivers/gpu/drm/omapdrm/omap_gem.c Ivaylo Dimitrov 2022-01-19  772  		dev_err(obj->dev->dev, "could not pin: %d\n", ret);
86ad0397250c58 drivers/gpu/drm/omapdrm/omap_gem.c Ivaylo Dimitrov 2022-01-19  773  		goto fail;
86ad0397250c58 drivers/gpu/drm/omapdrm/omap_gem.c Ivaylo Dimitrov 2022-01-19  774  	}
86ad0397250c58 drivers/gpu/drm/omapdrm/omap_gem.c Ivaylo Dimitrov 2022-01-19  775  
86ad0397250c58 drivers/gpu/drm/omapdrm/omap_gem.c Ivaylo Dimitrov 2022-01-19  776  	omap_obj->dma_addr = tiler_ssptr(block);
86ad0397250c58 drivers/gpu/drm/omapdrm/omap_gem.c Ivaylo Dimitrov 2022-01-19  777  	omap_obj->block = block;
86ad0397250c58 drivers/gpu/drm/omapdrm/omap_gem.c Ivaylo Dimitrov 2022-01-19  778  
86ad0397250c58 drivers/gpu/drm/omapdrm/omap_gem.c Ivaylo Dimitrov 2022-01-19  779  	DBG("got dma address: %pad", &omap_obj->dma_addr);
86ad0397250c58 drivers/gpu/drm/omapdrm/omap_gem.c Ivaylo Dimitrov 2022-01-19  780  
86ad0397250c58 drivers/gpu/drm/omapdrm/omap_gem.c Ivaylo Dimitrov 2022-01-19  781  fail:
86ad0397250c58 drivers/gpu/drm/omapdrm/omap_gem.c Ivaylo Dimitrov 2022-01-19  782  	return ret;
86ad0397250c58 drivers/gpu/drm/omapdrm/omap_gem.c Ivaylo Dimitrov 2022-01-19  783  }
86ad0397250c58 drivers/gpu/drm/omapdrm/omap_gem.c Ivaylo Dimitrov 2022-01-19  784  

:::::: The code at line 757 was first introduced by commit
:::::: 86ad0397250c585096d242dc3c0f774320ed1a80 drm: omapdrm: simplify omap_gem_pin

:::::: TO: Ivaylo Dimitrov <ivo.g.dimitrov.75@gmail.com>
:::::: CC: Tomi Valkeinen <tomi.valkeinen@ideasonboard.com>

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

                 reply	other threads:[~2024-05-13 12:19 UTC|newest]

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