From: kernel test robot <lkp@intel.com>
To: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Cc: kbuild-all@lists.01.org, linux-kernel@vger.kernel.org,
Mauro Carvalho Chehab <mchehab@kernel.org>,
linux-media@vger.kernel.org,
Sakari Ailus <sakari.ailus@linux.intel.com>
Subject: drivers/media/pci/intel/ipu3/ipu3-cio2.c:163:63: sparse: sparse: cast truncates bits from constant value (20000 becomes 0)
Date: Tue, 12 Jan 2021 20:44:21 +0800 [thread overview]
Message-ID: <202101122015.Umynt19J-lkp@intel.com> (raw)
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tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: a0d54b4f5b219fb31f0776e9f53aa137e78ae431
commit: 7b285f41f7376dc37e7fad1e803995fd39f42848 media: ipu3-cio2: Introduce CIO2_LOP_ENTRIES constant
date: 4 months ago
config: ia64-randconfig-s031-20210112 (attached as .config)
compiler: ia64-linux-gcc (GCC) 9.3.0
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: v0.6.3-208-g46a52ca4-dirty
# https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=7b285f41f7376dc37e7fad1e803995fd39f42848
git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
git fetch --no-tags linus master
git checkout 7b285f41f7376dc37e7fad1e803995fd39f42848
# save the attached .config to linux build tree
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' ARCH=ia64
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/media/pci/intel/ipu3/ipu3-cio2.c:163:63: sparse: sparse: cast truncates bits from constant value (20000 becomes 0)
vim +163 drivers/media/pci/intel/ipu3/ipu3-cio2.c
154
155 /* Initialize fpbt entries to point to dummy frame */
156 static void cio2_fbpt_entry_init_dummy(struct cio2_device *cio2,
157 struct cio2_fbpt_entry
158 entry[CIO2_MAX_LOPS])
159 {
160 unsigned int i;
161
162 entry[0].first_entry.first_page_offset = 0;
> 163 entry[1].second_entry.num_of_pages = CIO2_LOP_ENTRIES * CIO2_MAX_LOPS;
164 entry[1].second_entry.last_page_available_bytes = CIO2_PAGE_SIZE - 1;
165
166 for (i = 0; i < CIO2_MAX_LOPS; i++)
167 entry[i].lop_page_addr = cio2->dummy_lop_bus_addr >> PAGE_SHIFT;
168
169 cio2_fbpt_entry_enable(cio2, entry);
170 }
171
---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org
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next reply other threads:[~2021-01-12 12:45 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-01-12 12:44 kernel test robot [this message]
2021-01-12 14:03 ` drivers/media/pci/intel/ipu3/ipu3-cio2.c:163:63: sparse: sparse: cast truncates bits from constant value (20000 becomes 0) Andy Shevchenko
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