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Message-ID: <efc756c5-9ea3-66df-4885-82f57ff31b1f@189.cn>
Date: Mon, 28 Mar 2022 17:01:52 +0800
From: Sui Jingfeng <15330273260@....cn>
To: kernel test robot <lkp@...el.com>,
Maxime Ripard <mripard@...nel.org>,
Thomas Zimmermann <tzimmermann@...e.de>,
Roland Scheidegger <sroland@...are.com>,
Zack Rusin <zackr@...are.com>,
Christian Gmeiner <christian.gmeiner@...il.com>,
David Airlie <airlied@...ux.ie>,
Daniel Vetter <daniel@...ll.ch>,
Rob Herring <robh+dt@...nel.org>,
Thomas Bogendoerfer <tsbogend@...ha.franken.de>,
Dan Carpenter <error27@...il.com>,
Krzysztof Kozlowski <krzk@...nel.org>,
Andrey Zhizhikin <andrey.zhizhikin@...ca-geosystems.com>,
Sam Ravnborg <sam@...nborg.org>,
"David S . Miller" <davem@...emloft.net>,
Jiaxun Yang <jiaxun.yang@...goat.com>,
Lucas Stach <l.stach@...gutronix.de>,
Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
Ilia Mirkin <imirkin@...m.mit.edu>,
Qing Zhang <zhangqing@...ngson.cn>,
suijingfeng <suijingfeng@...ngson.cn>
Cc: kbuild-all@...ts.01.org, devicetree@...r.kernel.org,
linux-mips@...r.kernel.org, dri-devel@...ts.freedesktop.org,
linux-kernel@...r.kernel.org
Subject: Re: [PATCH v13 5/6] drm/loongson: add drm driver for loongson display
controller
On 2022/3/28 16:51, kernel test robot wrote:
> Hi Sui,
>
> Thank you for the patch! Perhaps something to improve:
>
> [auto build test WARNING on drm/drm-next]
> [also build test WARNING on robh/for-next linus/master v5.17 next-20220328]
> [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]
>
> url: https://github.com/intel-lab-lkp/linux/commits/Sui-Jingfeng/MIPS-Loongson64-dts-update-the-display-controller-device-node/20220328-103101
> base: git://anongit.freedesktop.org/drm/drm drm-next
> config: microblaze-randconfig-s032-20220328 (https://download.01.org/0day-ci/archive/20220328/202203281653.wiRaycuD-lkp@intel.com/config)
> compiler: microblaze-linux-gcc (GCC) 11.2.0
> reproduce:
> wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
> chmod +x ~/bin/make.cross
> # apt-get install sparse
> # sparse version: v0.6.4-dirty
> # https://github.com/intel-lab-lkp/linux/commit/836c0ab646f65b0a8c6574b5d2495c8617e96545
> git remote add linux-review https://github.com/intel-lab-lkp/linux
> git fetch --no-tags linux-review Sui-Jingfeng/MIPS-Loongson64-dts-update-the-display-controller-device-node/20220328-103101
> git checkout 836c0ab646f65b0a8c6574b5d2495c8617e96545
> # save the config file to linux build tree
> mkdir build_dir
> COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' O=build_dir ARCH=microblaze SHELL=/bin/bash drivers/gpu/drm/loongson/
>
> If you fix the issue, kindly add following tag as appropriate
> Reported-by: kernel test robot <lkp@...el.com>
>
>
> sparse warnings: (new ones prefixed by >>)
>>> drivers/gpu/drm/loongson/lsdc_i2c.c:179:23: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected void [noderef] __iomem *dir_reg @@ got void * @@
> drivers/gpu/drm/loongson/lsdc_i2c.c:179:23: sparse: expected void [noderef] __iomem *dir_reg
> drivers/gpu/drm/loongson/lsdc_i2c.c:179:23: sparse: got void *
>>> drivers/gpu/drm/loongson/lsdc_i2c.c:180:23: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected void [noderef] __iomem *dat_reg @@ got void * @@
> drivers/gpu/drm/loongson/lsdc_i2c.c:180:23: sparse: expected void [noderef] __iomem *dat_reg
> drivers/gpu/drm/loongson/lsdc_i2c.c:180:23: sparse: got void *
> drivers/gpu/drm/loongson/lsdc_i2c.c:252:23: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected void [noderef] __iomem *dir_reg @@ got void * @@
> drivers/gpu/drm/loongson/lsdc_i2c.c:252:23: sparse: expected void [noderef] __iomem *dir_reg
> drivers/gpu/drm/loongson/lsdc_i2c.c:252:23: sparse: got void *
> drivers/gpu/drm/loongson/lsdc_i2c.c:253:23: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected void [noderef] __iomem *dat_reg @@ got void * @@
> drivers/gpu/drm/loongson/lsdc_i2c.c:253:23: sparse: expected void [noderef] __iomem *dat_reg
> drivers/gpu/drm/loongson/lsdc_i2c.c:253:23: sparse: got void *
> --
>>> drivers/gpu/drm/loongson/lsdc_pci_drv.c:185:61: sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected void *reg_base @@ got void [noderef] __iomem *reg_base @@
> drivers/gpu/drm/loongson/lsdc_pci_drv.c:185:61: sparse: expected void *reg_base
> drivers/gpu/drm/loongson/lsdc_pci_drv.c:185:61: sparse: got void [noderef] __iomem *reg_base
> --
>>> drivers/gpu/drm/loongson/lsdc_output.c:232:63: sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected void *reg_base @@ got void [noderef] __iomem *reg_base @@
> drivers/gpu/drm/loongson/lsdc_output.c:232:63: sparse: expected void *reg_base
> drivers/gpu/drm/loongson/lsdc_output.c:232:63: sparse: got void [noderef] __iomem *reg_base
>
> vim +179 drivers/gpu/drm/loongson/lsdc_i2c.c
>
> 129
> 130 struct lsdc_i2c *lsdc_of_create_i2c_adapter(struct device *parent,
> 131 void *reg_base,
> 132 struct device_node *i2c_np)
> 133 {
> 134 unsigned int udelay = 5;
> 135 unsigned int timeout = 2200;
> 136 int nr = -1;
> 137 struct i2c_adapter *adapter;
> 138 struct lsdc_i2c *li2c;
> 139 u32 sda, scl;
> 140 int ret;
> 141
> 142 li2c = kzalloc(sizeof(*li2c), GFP_KERNEL);
> 143 if (!li2c)
> 144 return ERR_PTR(-ENOMEM);
> 145
> 146 spin_lock_init(&li2c->reglock);
> 147
> 148 ret = of_property_read_u32(i2c_np, "loongson,sda", &sda);
> 149 if (ret) {
> 150 dev_err(parent, "No sda pin number provided\n");
> 151 return ERR_PTR(ret);
> 152 }
> 153
> 154 ret = of_property_read_u32(i2c_np, "loongson,scl", &scl);
> 155 if (ret) {
> 156 dev_err(parent, "No scl pin number provided\n");
> 157 return ERR_PTR(ret);
> 158 }
> 159
> 160 ret = of_property_read_u32(i2c_np, "loongson,nr", &nr);
> 161 if (ret) {
> 162 int id;
> 163
> 164 if (ret == -EINVAL)
> 165 dev_dbg(parent, "no nr provided\n");
> 166
> 167 id = of_alias_get_id(i2c_np, "i2c");
> 168 if (id >= 0)
> 169 nr = id;
> 170 }
> 171
> 172 li2c->sda = 1 << sda;
> 173 li2c->scl = 1 << scl;
> 174
> 175 /* Optional properties which made the driver more flexible */
> 176 of_property_read_u32(i2c_np, "loongson,udelay", &udelay);
> 177 of_property_read_u32(i2c_np, "loongson,timeout", &timeout);
> 178
> > 179 li2c->dir_reg = reg_base + LS7A_DC_GPIO_DIR_REG;
> > 180 li2c->dat_reg = reg_base + LS7A_DC_GPIO_DAT_REG;
> 181
> 182 li2c->bit.setsda = ls7a_i2c_set_sda;
> 183 li2c->bit.setscl = ls7a_i2c_set_scl;
> 184 li2c->bit.getsda = ls7a_i2c_get_sda;
> 185 li2c->bit.getscl = ls7a_i2c_get_scl;
> 186 li2c->bit.udelay = udelay;
> 187 li2c->bit.timeout = usecs_to_jiffies(timeout);
> 188 li2c->bit.data = li2c;
> 189
> 190 adapter = &li2c->adapter;
> 191 adapter->algo_data = &li2c->bit;
> 192 adapter->owner = THIS_MODULE;
> 193 adapter->class = I2C_CLASS_DDC;
> 194 adapter->dev.parent = parent;
> 195 adapter->nr = nr;
> 196 adapter->dev.of_node = i2c_np;
> 197
> 198 snprintf(adapter->name, sizeof(adapter->name), "gpio-i2c-%d", nr);
> 199
> 200 i2c_set_adapdata(adapter, li2c);
> 201
> 202 ret = i2c_bit_add_numbered_bus(adapter);
> 203 if (ret) {
> 204 if (i2c_np)
> 205 of_node_put(i2c_np);
> 206
> 207 kfree(li2c);
> 208 return ERR_PTR(ret);
> 209 }
> 210
> 211 dev_info(parent, "sda=%u, scl=%u, nr=%d, udelay=%u, timeout=%u\n",
> 212 li2c->sda, li2c->scl, nr, udelay, timeout);
> 213
> 214 ret = devm_add_action_or_reset(parent, lsdc_of_release_i2c_adapter, li2c);
> 215 if (ret)
> 216 return NULL;
> 217
> 218 return li2c;
> 219 }
> 220
Hi, my driver will not used on microblaze arch,
what does this warnings means, do i need to fix this?
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