Hi Zhu, Thank you for the patch! Perhaps something to improve:
[auto build test WARNING on v4.17-rc4] [also build test WARNING on next-20180615] [cannot apply to input/next] [if your patch is applied to the wrong git tree, please drop us a note to help improve the system] url: https://github.com/0day-ci/linux/commits/Mark-Jonas/Input-add-bu21029-touch-driver/20180512-091305 reproduce: # apt-get install sparse make ARCH=x86_64 allmodconfig make C=1 CF=-D__CHECK_ENDIAN__ sparse warnings: (new ones prefixed by >>) >> drivers/input/touchscreen/bu21029_ts.c:293:13: sparse: restricted __be16 >> degrades to integer vim +293 drivers/input/touchscreen/bu21029_ts.c 262 263 static int bu21029_start_chip(struct input_dev *dev) 264 { 265 struct bu21029_ts_data *bu21029 = input_get_drvdata(dev); 266 struct i2c_client *i2c = bu21029->client; 267 struct { 268 u8 reg; 269 u8 value; 270 } init_table[] = { 271 {BU21029_CFR0_REG, CFR0_VALUE}, 272 {BU21029_CFR1_REG, CFR1_VALUE}, 273 {BU21029_CFR2_REG, CFR2_VALUE}, 274 {BU21029_CFR3_REG, CFR3_VALUE}, 275 {BU21029_LDO_REG, LDO_VALUE} 276 }; 277 int error, i; 278 u16 hwid; 279 280 /* take chip out of reset */ 281 gpiod_set_value_cansleep(bu21029->reset_gpios, 0); 282 mdelay(START_DELAY_MS); 283 284 error = i2c_smbus_read_i2c_block_data(i2c, 285 BU21029_HWID_REG, 286 2, 287 (u8 *)&hwid); 288 if (error < 0) { 289 dev_err(&i2c->dev, "failed to read HW ID\n"); 290 goto out; 291 } 292 > 293 if (cpu_to_be16(hwid) != SUPPORTED_HWID) { 294 dev_err(&i2c->dev, "unsupported HW ID 0x%x\n", hwid); 295 error = -ENODEV; 296 goto out; 297 } 298 299 for (i = 0; i < ARRAY_SIZE(init_table); ++i) { 300 error = i2c_smbus_write_byte_data(i2c, 301 init_table[i].reg, 302 init_table[i].value); 303 if (error < 0) { 304 dev_err(&i2c->dev, 305 "failed to write 0x%x to register 0x%x\n", 306 init_table[i].value, 307 init_table[i].reg); 308 goto out; 309 } 310 } 311 312 error = i2c_smbus_write_byte(i2c, BU21029_AUTOSCAN); 313 if (error < 0) { 314 dev_err(&i2c->dev, "failed to start autoscan\n"); 315 goto out; 316 } 317 318 enable_irq(bu21029->client->irq); 319 return 0; 320 321 out: 322 bu21029_stop_chip(dev); 323 return error; 324 } 325 --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation
