From: kernel test robot <lkp@intel.com>
To: Andrey Konovalov <andreyknvl@google.com>
Cc: kbuild-all@lists.01.org, clang-built-linux@googlegroups.com,
linux-kernel@vger.kernel.org,
Andrew Morton <akpm@linux-foundation.org>,
Linux Memory Management List <linux-mm@kvack.org>
Subject: drivers/video/backlight/ltv350qv.c:192:12: warning: stack frame size of 13472 bytes in function 'ltv350qv_power'
Date: Mon, 26 Oct 2020 02:15:37 +0800 [thread overview]
Message-ID: <202010260230.VivTG0Gb-lkp@intel.com> (raw)
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tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: d76913908102044f14381df865bb74df17a538cb
commit: cae9dc35ed9ff82a99754e51d57ff6c332e1f7e4 kasan: allow enabling stack tagging for tag-based mode
date: 3 months ago
config: arm64-randconfig-r005-20201026 (attached as .config)
compiler: clang version 12.0.0 (https://github.com/llvm/llvm-project 1c8371692dfe8245bc6690ff1262dcced4649d21)
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=cae9dc35ed9ff82a99754e51d57ff6c332e1f7e4
git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
git fetch --no-tags linus master
git checkout cae9dc35ed9ff82a99754e51d57ff6c332e1f7e4
# 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/video/backlight/ltv350qv.c:192:12: warning: stack frame size of 13472 bytes in function 'ltv350qv_power' [-Wframe-larger-than=]
static int ltv350qv_power(struct ltv350qv *lcd, int power)
^
1 warning generated.
vim +/ltv350qv_power +192 drivers/video/backlight/ltv350qv.c
18f65c793a5106 Haavard Skinnemoen 2007-09-02 191
18f65c793a5106 Haavard Skinnemoen 2007-09-02 @192 static int ltv350qv_power(struct ltv350qv *lcd, int power)
18f65c793a5106 Haavard Skinnemoen 2007-09-02 193 {
18f65c793a5106 Haavard Skinnemoen 2007-09-02 194 int ret = 0;
18f65c793a5106 Haavard Skinnemoen 2007-09-02 195
18f65c793a5106 Haavard Skinnemoen 2007-09-02 196 if (POWER_IS_ON(power) && !POWER_IS_ON(lcd->power))
18f65c793a5106 Haavard Skinnemoen 2007-09-02 197 ret = ltv350qv_power_on(lcd);
18f65c793a5106 Haavard Skinnemoen 2007-09-02 198 else if (!POWER_IS_ON(power) && POWER_IS_ON(lcd->power))
18f65c793a5106 Haavard Skinnemoen 2007-09-02 199 ret = ltv350qv_power_off(lcd);
18f65c793a5106 Haavard Skinnemoen 2007-09-02 200
18f65c793a5106 Haavard Skinnemoen 2007-09-02 201 if (!ret)
18f65c793a5106 Haavard Skinnemoen 2007-09-02 202 lcd->power = power;
18f65c793a5106 Haavard Skinnemoen 2007-09-02 203
18f65c793a5106 Haavard Skinnemoen 2007-09-02 204 return ret;
18f65c793a5106 Haavard Skinnemoen 2007-09-02 205 }
18f65c793a5106 Haavard Skinnemoen 2007-09-02 206
:::::: The code at line 192 was first introduced by commit
:::::: 18f65c793a5106b9f99822ef248e71582db03386 backlight: Add Samsung LTV350QV LCD driver
:::::: TO: Haavard Skinnemoen <hskinnemoen@atmel.com>
:::::: CC: Richard Purdie <rpurdie@rpsys.net>
---
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:[~2020-10-25 18:16 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-10-25 18:15 kernel test robot [this message]
2020-10-25 19:17 ` drivers/video/backlight/ltv350qv.c:192:12: warning: stack frame size of 13472 bytes in function 'ltv350qv_power' Andrew Morton
2020-10-25 19:23 ` Joe Perches
2020-10-28 15:46 ` Daniel Thompson
2020-10-29 15:28 ` Andrey Konovalov
2020-10-30 13:28 ` [kbuild-all] " Chen, Rong A
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