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Message-ID: <202404210232.jI4lxq3k-lkp@intel.com>
Date: Sun, 21 Apr 2024 03:07:56 +0800
From: kernel test robot <lkp@...el.com>
To: Dharma Balasubiramani <dharma.b@...rochip.com>,
"dmitry . baryshkov @ linaro . org" <dmitry.baryshkov@...aro.org>,
"andrzej . hajda @ intel . com" <andrzej.hajda@...el.com>,
"neil . armstrong @ linaro . org" <neil.armstrong@...aro.org>,
"rfoss @ kernel . org" <rfoss@...nel.org>,
"Laurent . pinchart @ ideasonboard . com" <Laurent.pinchart@...asonboard.com>,
"jonas @ kwiboo . se" <jonas@...boo.se>,
"jernej . skrabec @ gmail . com" <jernej.skrabec@...il.com>,
"maarten . lankhorst @ linux . intel . com" <maarten.lankhorst@...ux.intel.com>,
"mripard @ kernel . org" <mripard@...nel.org>,
"tzimmermann @ suse . de" <tzimmermann@...e.de>,
"airlied @ gmail . com" <airlied@...il.com>,
"daniel @ ffwll . ch" <daniel@...ll.ch>,
"robh+dt @ kernel . org" <robh+dt@...nel.org>,
"krzysztof . kozlowski+dt @ linaro . org" <krzysztof.kozlowski+dt@...aro.org>,
"conor+dt @ kernel . org" <conor+dt@...nel.org>,
"linux @ armlinux . org . uk" <linux@...linux.org.uk>,
"Nicolas . Ferre @ microchip . com" <Nicolas.Ferre@...rochip.com>,
"alexandre . belloni @ bootlin . com" <alexandre.belloni@...tlin.com>,
"claudiu . beznea @ tuxon . dev" <claudiu.beznea@...on.dev>,
"Manikandan . M @ microchip . com" <Manikandan.M@...rochip.com>,
"arnd @ arndb . de" <arnd@...db.de>,
"geert+renesas @ glider . be" <geert+renesas@...der.be>,
"Jason @ zx2c4 . com" <Jason@...c4.com>,
"mpe @ ellerman . id . au" <mpe@...erman.id.au>,
"gerg @ linux-m68k . org" <gerg@...ux-m68k.org>,
"rdunlap @ infradead . org" <rdunlap@...radead.org>,
"vbabka @ suse . cz" <vbabka@...e.cz>,
"dri-devel @ lists . freedesktop . org" <dri-devel@...ts.freedesktop.org>,
"devicetree @ vger . kernel . org" <devicetree@...r.kernel.org>,
"linux-kernel @ vger . kernel . org" <linux-kernel@...r.kernel.org>
Cc: llvm@...ts.linux.dev, oe-kbuild-all@...ts.linux.dev
Subject: Re: [PATCH v7 2/4] drm/bridge: add lvds controller support for sam9x7
Hi Dharma,
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 v6.9-rc4 next-20240419]
[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/Dharma-Balasubiramani/dt-bindings-display-bridge-add-sam9x75-lvds-binding/20240418-170157
base: git://anongit.freedesktop.org/drm/drm-misc drm-misc-next
patch link: https://lore.kernel.org/r/20240418085725.373797-3-dharma.b%40microchip.com
patch subject: [PATCH v7 2/4] drm/bridge: add lvds controller support for sam9x7
config: arm-at91_dt_defconfig (https://download.01.org/0day-ci/archive/20240421/202404210232.jI4lxq3k-lkp@intel.com/config)
compiler: clang version 19.0.0git (https://github.com/llvm/llvm-project 7089c359a3845323f6f30c44a47dd901f2edfe63)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240421/202404210232.jI4lxq3k-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/202404210232.jI4lxq3k-lkp@intel.com/
All warnings (new ones prefixed by >>):
In file included from drivers/gpu/drm/bridge/microchip-lvds.c:17:
In file included from include/linux/phy/phy.h:17:
In file included from include/linux/regulator/consumer.h:35:
In file included from include/linux/suspend.h:5:
In file included from include/linux/swap.h:9:
In file included from include/linux/memcontrol.h:21:
In file included from include/linux/mm.h:2208:
include/linux/vmstat.h:522:36: warning: arithmetic between different enumeration types ('enum node_stat_item' and 'enum lru_list') [-Wenum-enum-conversion]
522 | return node_stat_name(NR_LRU_BASE + lru) + 3; // skip "nr_"
| ~~~~~~~~~~~ ^ ~~~
>> drivers/gpu/drm/bridge/microchip-lvds.c:199:6: warning: variable 'ret' is uninitialized when used here [-Wuninitialized]
199 | if (ret < 0) {
| ^~~
drivers/gpu/drm/bridge/microchip-lvds.c:154:9: note: initialize the variable 'ret' to silence this warning
154 | int ret;
| ^
| = 0
2 warnings generated.
vim +/ret +199 drivers/gpu/drm/bridge/microchip-lvds.c
148
149 static int mchp_lvds_probe(struct platform_device *pdev)
150 {
151 struct device *dev = &pdev->dev;
152 struct mchp_lvds *lvds;
153 struct device_node *port;
154 int ret;
155
156 if (!dev->of_node)
157 return -ENODEV;
158
159 lvds = devm_kzalloc(&pdev->dev, sizeof(*lvds), GFP_KERNEL);
160 if (!lvds)
161 return -ENOMEM;
162
163 lvds->dev = dev;
164
165 lvds->regs = devm_ioremap_resource(lvds->dev,
166 platform_get_resource(pdev, IORESOURCE_MEM, 0));
167 if (IS_ERR(lvds->regs))
168 return PTR_ERR(lvds->regs);
169
170 lvds->pclk = devm_clk_get(lvds->dev, "pclk");
171 if (IS_ERR(lvds->pclk))
172 return dev_err_probe(lvds->dev, PTR_ERR(lvds->pclk),
173 "could not get pclk_lvds\n");
174
175 port = of_graph_get_remote_node(dev->of_node, 1, 0);
176 if (!port) {
177 dev_err(dev,
178 "can't find port point, please init lvds panel port!\n");
179 return -ENODEV;
180 }
181
182 lvds->panel = of_drm_find_panel(port);
183 of_node_put(port);
184
185 if (IS_ERR(lvds->panel))
186 return -EPROBE_DEFER;
187
188 lvds->panel_bridge = devm_drm_of_get_bridge(dev, dev->of_node, 1, 0);
189
190 if (IS_ERR(lvds->panel_bridge))
191 return PTR_ERR(lvds->panel_bridge);
192
193 lvds->bridge.of_node = dev->of_node;
194 lvds->bridge.type = DRM_MODE_CONNECTOR_LVDS;
195 lvds->bridge.funcs = &mchp_lvds_bridge_funcs;
196
197 dev_set_drvdata(dev, lvds);
198 devm_pm_runtime_enable(dev);
> 199 if (ret < 0) {
200 dev_err(lvds->dev, "failed to enable pm runtime: %d\n", ret);
201 return ret;
202 }
203
204 drm_bridge_add(&lvds->bridge);
205
206 return 0;
207 }
208
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
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