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.h:22:28: warning: conversion from 'long unsigned int' to 'u16' {aka 'short unsigned int'} changes value from '131072' to '0'
Date: Tue, 29 Dec 2020 12:42:08 +0800 [thread overview]
Message-ID: <202012291200.Q8gXBY94-lkp@intel.com> (raw)
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tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: dea8dcf2a9fa8cc540136a6cd885c3beece16ec3
commit: 7b285f41f7376dc37e7fad1e803995fd39f42848 media: ipu3-cio2: Introduce CIO2_LOP_ENTRIES constant
date: 4 months ago
config: ia64-randconfig-r014-20201221 (attached as .config)
compiler: ia64-linux-gcc (GCC) 9.3.0
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
# 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 ARCH=ia64
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 >>):
In file included from drivers/media/pci/intel/ipu3/ipu3-cio2.c:29:
drivers/media/pci/intel/ipu3/ipu3-cio2.c: In function 'cio2_fbpt_entry_init_dummy':
>> drivers/media/pci/intel/ipu3/ipu3-cio2.h:22:28: warning: conversion from 'long unsigned int' to 'u16' {aka 'short unsigned int'} changes value from '131072' to '0' [-Woverflow]
22 | #define CIO2_LOP_ENTRIES (PAGE_SIZE / sizeof(u32))
| ^
drivers/media/pci/intel/ipu3/ipu3-cio2.c:163:39: note: in expansion of macro 'CIO2_LOP_ENTRIES'
163 | entry[1].second_entry.num_of_pages = CIO2_LOP_ENTRIES * CIO2_MAX_LOPS;
| ^~~~~~~~~~~~~~~~
vim +22 drivers/media/pci/intel/ipu3/ipu3-cio2.h
18
19 /* 32MB = 8xFBPT_entry */
20 #define CIO2_MAX_LOPS 8
21 #define CIO2_MAX_BUFFERS (PAGE_SIZE / 16 / CIO2_MAX_LOPS)
> 22 #define CIO2_LOP_ENTRIES (PAGE_SIZE / sizeof(u32))
23
---
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:[~2020-12-29 4:43 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-12-29 4:42 kernel test robot [this message]
2020-12-29 15:19 ` drivers/media/pci/intel/ipu3/ipu3-cio2.h:22:28: warning: conversion from 'long unsigned int' to 'u16' {aka 'short unsigned int'} changes value from '131072' to '0' Andy Shevchenko
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