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@xxxxxxxxx/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@xxxxxxxxx> 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 -- 0-DAY CI Kernel Test Service https://01.org/lkp
