[PATCH v13 5/6] drm/loongson: add drm driver for loongson display controller
kernel test robot
lkp at intel.com
Mon Mar 28 08:51:16 UTC 2022
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 at intel.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
--
0-DAY CI Kernel Test Service
https://01.org/lkp
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