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Message-ID: <202509021907.mZZ38HtR-lkp@intel.com>
Date: Tue, 2 Sep 2025 19:23:37 +0800
From: kernel test robot <lkp@...el.com>
To: Guido Günther <agx@...xcpu.org>,
Neil Armstrong <neil.armstrong@...aro.org>,
Jessica Zhang <jessica.zhang@....qualcomm.com>,
Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
Maxime Ripard <mripard@...nel.org>,
Thomas Zimmermann <tzimmermann@...e.de>,
David Airlie <airlied@...il.com>, Simona Vetter <simona@...ll.ch>
Cc: oe-kbuild-all@...ts.linux.dev, dri-devel@...ts.freedesktop.org,
linux-kernel@...r.kernel.org, phone-devel@...r.kernel.org,
Guido Günther <agx@...xcpu.org>
Subject: Re: [PATCH 3/3] drm/panel: visionox-rm69299: Add backlight support
Hi Guido,
kernel test robot noticed the following build warnings:
[auto build test WARNING on b320789d6883cc00ac78ce83bccbfe7ed58afcf0]
url: https://github.com/intel-lab-lkp/linux/commits/Guido-G-nther/drm-panel-visionox-rm69299-Fix-clock-frequency-for-SHIFT6mq/20250901-222400
base: b320789d6883cc00ac78ce83bccbfe7ed58afcf0
patch link: https://lore.kernel.org/r/20250901-shift6mq-panel-v1-3-444b4abbfaea%40sigxcpu.org
patch subject: [PATCH 3/3] drm/panel: visionox-rm69299: Add backlight support
config: x86_64-randconfig-123-20250902 (https://download.01.org/0day-ci/archive/20250902/202509021907.mZZ38HtR-lkp@intel.com/config)
compiler: gcc-12 (Debian 12.2.0-14+deb12u1) 12.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250902/202509021907.mZZ38HtR-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@...el.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202509021907.mZZ38HtR-lkp@intel.com/
sparse warnings: (new ones prefixed by >>)
>> drivers/gpu/drm/panel/panel-visionox-rm69299.c:341:24: sparse: sparse: Using plain integer as NULL pointer
drivers/gpu/drm/panel/panel-visionox-rm69299.c:411:42: sparse: sparse: symbol 'visionox_rm69299_1080p_display_desc' was not declared. Should it be static?
drivers/gpu/drm/panel/panel-visionox-rm69299.c:417:42: sparse: sparse: symbol 'visionox_rm69299_shift_desc' was not declared. Should it be static?
vim +341 drivers/gpu/drm/panel/panel-visionox-rm69299.c
329
330 static struct backlight_device *
331 visionox_rm69299_create_backlight(struct visionox_rm69299 *ctx)
332 {
333 struct device *dev = &ctx->dsi->dev;
334 const struct backlight_properties props = {
335 .type = BACKLIGHT_RAW,
336 .brightness = ctx->desc->initial_brightness,
337 .max_brightness = ctx->desc->max_brightness,
338 };
339
340 if (!ctx->desc->max_brightness)
> 341 return 0;
342
343 return devm_backlight_device_register(dev, dev_name(dev), dev, ctx->dsi,
344 &visionox_rm69299_bl_ops,
345 &props);
346 }
347
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
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