* Re: [PATCH RESEND 3/3] drm/verisilicon: stop to reuse atomic_disable for invisible planes
[not found] <20261030133233.197189-4-zhengxingda@iscas.ac.cn>
@ 2026-10-31 13:04 ` kernel test robot
0 siblings, 0 replies; only message in thread
From: kernel test robot @ 2026-10-31 13:04 UTC (permalink / raw)
To: Icenowy Zheng, Maarten Lankhorst, Maxime Ripard,
Thomas Zimmermann
Cc: llvm, oe-kbuild-all, David Airlie, Simona Vetter,
Dmitry Baryshkov, Joey Lu, Han Gao, dri-devel, linux-kernel,
Icenowy Zheng
Hi Icenowy,
kernel test robot noticed the following build warnings:
[auto build test WARNING on drm-misc/drm-misc-next]
[also build test WARNING on linus/master v7.3 next-20261030]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch#_base_tree_information]
url: https://github.com/intel-lab-lkp/linux/commits/Icenowy-Zheng/drm-verisilicon-fix-DC8200-primary-plane-disable-clearing-FB_EN/20261030-213231
base: https://gitlab.freedesktop.org/drm/misc/kernel.git drm-misc-next
patch link: https://lore.kernel.org/r/20261030133233.197189-4-zhengxingda%40iscas.ac.cn
patch subject: [PATCH RESEND 3/3] drm/verisilicon: stop to reuse atomic_disable for invisible planes
config: arm64-randconfig-1001-20261031 (https://download.01.org/0day-ci/archive/20261031/202610312040.VpGybfak-lkp@intel.com/config)
compiler: clang version 24.0.0git (https://github.com/llvm/llvm-project c2ea4440d4b64c148de4fdfca1fc2c437a0701e4)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20261031/202610312040.VpGybfak-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/202610312040.VpGybfak-lkp@intel.com/
All warnings (new ones prefixed by >>):
>> drivers/gpu/drm/verisilicon/vs_primary_plane.c:117:28: warning: variable 'dc' is uninitialized when used here [-Wuninitialized]
117 | vs_primary_plane_disable(dc, output);
| ^~
drivers/gpu/drm/verisilicon/vs_primary_plane.c:111:18: note: initialize the variable 'dc' to silence this warning
111 | struct vs_dc *dc;
| ^
| = NULL
>> drivers/gpu/drm/verisilicon/vs_primary_plane.c:117:32: warning: variable 'output' is uninitialized when used here [-Wuninitialized]
117 | vs_primary_plane_disable(dc, output);
| ^~~~~~
drivers/gpu/drm/verisilicon/vs_primary_plane.c:113:21: note: initialize the variable 'output' to silence this warning
113 | unsigned int output;
| ^
| = 0
2 warnings generated.
--
>> drivers/gpu/drm/verisilicon/vs_cursor_plane.c:154:27: warning: variable 'dc' is uninitialized when used here [-Wuninitialized]
154 | vs_cursor_plane_disable(dc, output);
| ^~
drivers/gpu/drm/verisilicon/vs_cursor_plane.c:148:18: note: initialize the variable 'dc' to silence this warning
148 | struct vs_dc *dc;
| ^
| = NULL
>> drivers/gpu/drm/verisilicon/vs_cursor_plane.c:154:31: warning: variable 'output' is uninitialized when used here [-Wuninitialized]
154 | vs_cursor_plane_disable(dc, output);
| ^~~~~~
drivers/gpu/drm/verisilicon/vs_cursor_plane.c:150:21: note: initialize the variable 'output' to silence this warning
150 | unsigned int output;
| ^
| = 0
2 warnings generated.
vim +/dc +117 drivers/gpu/drm/verisilicon/vs_primary_plane.c
102
103 static void vs_primary_plane_atomic_update(struct drm_plane *plane,
104 struct drm_atomic_commit *atomic_state)
105 {
106 struct drm_plane_state *state = drm_atomic_get_new_plane_state(atomic_state,
107 plane);
108 struct vs_plane_state *vs_state = to_vs_plane_state(state);
109 struct drm_framebuffer *fb = state->fb;
110 struct drm_crtc *crtc = state->crtc;
111 struct vs_dc *dc;
112 struct vs_crtc *vcrtc;
113 unsigned int output;
114 dma_addr_t dma_addr;
115
116 if (!state->visible) {
> 117 vs_primary_plane_disable(dc, output);
118 return;
119 }
120
121 vcrtc = drm_crtc_to_vs_crtc(crtc);
122 output = vcrtc->id;
123 dc = vcrtc->dc;
124
125 regmap_update_bits(dc->regs, VSDC_FB_CONFIG(output),
126 VSDC_FB_CONFIG_FMT_MASK,
127 VSDC_FB_CONFIG_FMT(vs_state->format.color));
128 regmap_update_bits(dc->regs, VSDC_FB_CONFIG(output),
129 VSDC_FB_CONFIG_SWIZZLE_MASK,
130 VSDC_FB_CONFIG_SWIZZLE(vs_state->format.swizzle));
131 regmap_assign_bits(dc->regs, VSDC_FB_CONFIG(output),
132 VSDC_FB_CONFIG_UV_SWIZZLE_EN,
133 vs_state->format.uv_swizzle);
134
135 /*
136 * Primary plane cannot be moved, no clipping is involved,
137 * so the non-clipped framebuffer address can be used.
138 */
139 dma_addr = drm_fb_dma_get_gem_addr(fb, state, 0);
140
141 regmap_write(dc->regs, VSDC_FB_ADDRESS(output),
142 lower_32_bits(dma_addr));
143 regmap_write(dc->regs, VSDC_FB_STRIDE(output),
144 fb->pitches[0]);
145
146 regmap_write(dc->regs, VSDC_FB_TOP_LEFT(output),
147 VSDC_MAKE_PLANE_POS(state->crtc_x, state->crtc_y));
148 regmap_write(dc->regs, VSDC_FB_BOTTOM_RIGHT(output),
149 VSDC_MAKE_PLANE_POS(state->crtc_x + state->crtc_w,
150 state->crtc_y + state->crtc_h));
151 regmap_write(dc->regs, VSDC_FB_SIZE(output),
152 VSDC_MAKE_PLANE_SIZE(state->crtc_w, state->crtc_h));
153
154 regmap_write(dc->regs, VSDC_FB_BLEND_CONFIG(output),
155 VSDC_FB_BLEND_CONFIG_BLEND_DISABLE);
156
157 vs_primary_plane_commit(dc, output);
158 }
159
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
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