drivers/gpu/drm/panel/panel-samsung-ld9040.c:240:12: warning: stack frame size (8344) exceeds limit (8192) in 'ld9040_prepare'
From: kernel test robot
Date: Tue Aug 18 2026 - 22:36:01 EST
Hi David,
FYI, the error/warning still remains.
tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: 3a0dd7ba4f44cdc116d83712f61e7c1a95be3588
commit: 700a281905f2a4ccf6f3b2d3cd6985e034b4b021 spi: add offload TX/RX streaming APIs
date: 1 year, 6 months ago
config: x86_64-randconfig-003-20260819 (https://download.01.org/0day-ci/archive/20260819/202608191043.9OK2y1fN-lkp@xxxxxxxxx/config)
compiler: clang version 22.1.3 (https://github.com/llvm/llvm-project e9846648fd6183ee6d8cbdb4502213fcf902a211)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260819/202608191043.9OK2y1fN-lkp@xxxxxxxxx/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
| Fixes: 700a281905f2 ("spi: add offload TX/RX streaming APIs")
| Reported-by: kernel test robot <lkp@xxxxxxxxx>
| Closes: https://lore.kernel.org/oe-kbuild-all/202608191043.9OK2y1fN-lkp@xxxxxxxxx/
All warnings (new ones prefixed by >>):
In file included from <built-in>:3:
In file included from include/linux/compiler_types.h:171:
include/linux/compiler-clang.h:28:9: warning: '__SANITIZE_ADDRESS__' macro redefined [-Wmacro-redefined]
28 | #define __SANITIZE_ADDRESS__
| ^
<built-in>:353:9: note: previous definition is here
353 | #define __SANITIZE_ADDRESS__ 1
| ^
>> drivers/gpu/drm/panel/panel-samsung-ld9040.c:240:12: warning: stack frame size (8344) exceeds limit (8192) in 'ld9040_prepare' [-Wframe-larger-than]
240 | static int ld9040_prepare(struct drm_panel *panel)
| ^
2 warnings generated.
vim +/ld9040_prepare +240 drivers/gpu/drm/panel/panel-samsung-ld9040.c
ff219937763253 drivers/gpu/drm/panel/panel-ld9040.c Andrzej Hajda 2014-03-26 239
099b3e8699322e drivers/gpu/drm/panel/panel-ld9040.c Ajay Kumar 2014-07-31 @240 static int ld9040_prepare(struct drm_panel *panel)
ff219937763253 drivers/gpu/drm/panel/panel-ld9040.c Andrzej Hajda 2014-03-26 241 {
ff219937763253 drivers/gpu/drm/panel/panel-ld9040.c Andrzej Hajda 2014-03-26 242 struct ld9040 *ctx = panel_to_ld9040(panel);
ff219937763253 drivers/gpu/drm/panel/panel-ld9040.c Andrzej Hajda 2014-03-26 243 int ret;
ff219937763253 drivers/gpu/drm/panel/panel-ld9040.c Andrzej Hajda 2014-03-26 244
ff219937763253 drivers/gpu/drm/panel/panel-ld9040.c Andrzej Hajda 2014-03-26 245 ret = ld9040_power_on(ctx);
ff219937763253 drivers/gpu/drm/panel/panel-ld9040.c Andrzej Hajda 2014-03-26 246 if (ret < 0)
ff219937763253 drivers/gpu/drm/panel/panel-ld9040.c Andrzej Hajda 2014-03-26 247 return ret;
ff219937763253 drivers/gpu/drm/panel/panel-ld9040.c Andrzej Hajda 2014-03-26 248
ff219937763253 drivers/gpu/drm/panel/panel-ld9040.c Andrzej Hajda 2014-03-26 249 ld9040_init(ctx);
ff219937763253 drivers/gpu/drm/panel/panel-ld9040.c Andrzej Hajda 2014-03-26 250
ff219937763253 drivers/gpu/drm/panel/panel-ld9040.c Andrzej Hajda 2014-03-26 251 ret = ld9040_clear_error(ctx);
ff219937763253 drivers/gpu/drm/panel/panel-ld9040.c Andrzej Hajda 2014-03-26 252
ff219937763253 drivers/gpu/drm/panel/panel-ld9040.c Andrzej Hajda 2014-03-26 253 if (ret < 0)
8141028278c2ea drivers/gpu/drm/panel/panel-ld9040.c Ajay Kumar 2014-07-31 254 ld9040_unprepare(panel);
ff219937763253 drivers/gpu/drm/panel/panel-ld9040.c Andrzej Hajda 2014-03-26 255
ff219937763253 drivers/gpu/drm/panel/panel-ld9040.c Andrzej Hajda 2014-03-26 256 return ret;
ff219937763253 drivers/gpu/drm/panel/panel-ld9040.c Andrzej Hajda 2014-03-26 257 }
ff219937763253 drivers/gpu/drm/panel/panel-ld9040.c Andrzej Hajda 2014-03-26 258
:::::: The code at line 240 was first introduced by commit
:::::: 099b3e8699322efb7229913d2c1651588205f182 drm/panel: ld9040: Add dummy prepare and unprepare routines
:::::: TO: Ajay Kumar <ajaykumar.rs@xxxxxxxxxxx>
:::::: CC: Thierry Reding <treding@xxxxxxxxxx>
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