From: kernel test robot <lkp@intel.com>
To: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Cc: kbuild-all@lists.01.org, clang-built-linux@googlegroups.com,
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:163:56: warning: implicit conversion from 'unsigned long' to 'u16' (aka 'unsigned short') changes value from 131072 to 0
Date: Sat, 21 Nov 2020 16:23:05 +0800 [thread overview]
Message-ID: <202011211600.bZyprrVg-lkp@intel.com> (raw)
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tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: 27bba9c532a8d21050b94224ffd310ad0058c353
commit: 7b285f41f7376dc37e7fad1e803995fd39f42848 media: ipu3-cio2: Introduce CIO2_LOP_ENTRIES constant
date: 2 months ago
config: arm64-randconfig-r031-20201121 (attached as .config)
compiler: clang version 12.0.0 (https://github.com/llvm/llvm-project bec968cbb367dd03439c89c1d4ef968ef662d7c0)
reproduce (this is a W=1 build):
wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
chmod +x ~/bin/make.cross
# install arm64 cross compiling tool for clang build
# apt-get install binutils-aarch64-linux-gnu
# 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=clang make.cross ARCH=arm64
If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>
All warnings (new ones prefixed by >>):
>> drivers/media/pci/intel/ipu3/ipu3-cio2.c:163:56: warning: implicit conversion from 'unsigned long' to 'u16' (aka 'unsigned short') changes value from 131072 to 0 [-Wconstant-conversion]
entry[1].second_entry.num_of_pages = CIO2_LOP_ENTRIES * CIO2_MAX_LOPS;
~ ~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~
1 warning generated.
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:[~2020-11-21 8:24 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-11-21 8:23 kernel test robot [this message]
2020-11-23 10:40 ` drivers/media/pci/intel/ipu3/ipu3-cio2.c:163:56: warning: implicit conversion from 'unsigned long' to 'u16' (aka 'unsigned short') changes value from 131072 to 0 Andy Shevchenko
2020-12-11 16:56 ` Sakari Ailus
2020-12-14 15:29 ` Andy Shevchenko
-- strict thread matches above, loose matches on Subject: below --
2021-01-04 23:16 kernel test robot
2021-01-04 23:24 ` Sakari Ailus
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