From: David Laight <david.laight.linux@gmail.com>
To: kernel test robot <lkp@intel.com>
Cc: LiangCheng Wang <zaq14760@gmail.com>,
llvm@lists.linux.dev, oe-kbuild-all@lists.linux.dev,
linux-kernel@vger.kernel.org,
Thomas Zimmermann <tzimmermann@suse.de>
Subject: Re: drivers/gpu/drm/tiny/pixpaper.c:579:12: warning: stack frame size (20024) exceeds limit (8192) in 'pixpaper_panel_hw_init'
Date: Thu, 25 Dec 2025 09:29:27 +0000 [thread overview]
Message-ID: <20251225092927.4925c4d7@pumpkin> (raw)
In-Reply-To: <202512250610.xyL5clTw-lkp@intel.com>
On Thu, 25 Dec 2025 06:46:40 +0800
kernel test robot <lkp@intel.com> wrote:
> Hi LiangCheng,
>
> FYI, the error/warning still remains.
>
> tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
> head: ccd1cdca5cd433c8a5dff78b69a79b31d9b77ee1
> commit: c9e70639f5915f2d084a0126e62fe53a52c29cea drm: tiny: Add support for Mayqueen Pixpaper e-ink panel
> date: 4 months ago
> config: x86_64-randconfig-013-20251225 (https://download.01.org/0day-ci/archive/20251225/202512250610.xyL5clTw-lkp@intel.com/config)
> compiler: clang version 20.1.8 (https://github.com/llvm/llvm-project 87f0227cb60147a26a1eeb4fb06e3b505e9c7261)
> reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20251225/202512250610.xyL5clTw-lkp@intel.com/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
> | Reported-by: kernel test robot <lkp@intel.com>
> | Closes: https://lore.kernel.org/oe-kbuild-all/202512250610.xyL5clTw-lkp@intel.com/
>
> All warnings (new ones prefixed by >>):
>
> >> drivers/gpu/drm/tiny/pixpaper.c:579:12: warning: stack frame size (20024) exceeds limit (8192) in 'pixpaper_panel_hw_init' [-Wframe-larger-than]
> 579 | static int pixpaper_panel_hw_init(struct pixpaper_panel *panel)
> | ^
> 1 warning generated.
>
>
> vim +/pixpaper_panel_hw_init +579 drivers/gpu/drm/tiny/pixpaper.c
>
> 578
> > 579 static int pixpaper_panel_hw_init(struct pixpaper_panel *panel)
> 580 {
> 581 struct pixpaper_error_ctx err = { .errno_code = 0 };
> 582
> 583 gpiod_set_value_cansleep(panel->reset, 0);
> 584 msleep(50);
> 585 gpiod_set_value_cansleep(panel->reset, 1);
> 586 msleep(50);
> 587
> 588 pixpaper_wait_for_panel(panel);
> 589
> 590 pixpaper_send_cmd(panel, PIXPAPER_CMD_UNKNOWN_4D, &err);
> 591 pixpaper_send_data(panel, PIXPAPER_UNKNOWN_4D_CONFIG, &err);
Those two functions want marking noinline (all the time).
David
prev parent reply other threads:[~2025-12-25 9:29 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-12-24 22:46 drivers/gpu/drm/tiny/pixpaper.c:579:12: warning: stack frame size (20024) exceeds limit (8192) in 'pixpaper_panel_hw_init' kernel test robot
2025-12-25 9:29 ` David Laight [this message]
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