[GitHub] [nuttx] xiaoxiang781216 commented on a diff in pull request #8009: arm64/a64: add driver for Allwinner A64 I2C bus

[GitBox <gi...@apache.org>]

xiaoxiang781216 commented on code in PR #8009:
URL: https://github.com/apache/nuttx/pull/8009#discussion_r1060013555


##########
drivers/sensors/mpu60x0.c:
##########
@@ -404,7 +404,7 @@ static int __mpu_read_reg_i2c(FAR struct mpu_dev_s *dev,
   msg[0].frequency = CONFIG_MPU60X0_I2C_FREQ;
   msg[0].addr      = dev->config.addr;
   msg[0].flags     = I2C_M_NOSTOP;
-  msg[0].buffer    = &reg_addr;
+  msg[0].buffer    = (uint8_t *)&reg_addr;

Review Comment:
   it's better to change reg_addr type to uint8_t since mpu_regaddr_e may have 4bytes length and the cast only work for little endian machine.



##########
drivers/sensors/mpu60x0.c:
##########
@@ -433,7 +433,7 @@ static int __mpu_write_reg_i2c(FAR struct mpu_dev_s *dev,
   msg[0].frequency = CONFIG_MPU60X0_I2C_FREQ;
   msg[0].addr      = dev->config.addr;
   msg[0].flags     = I2C_M_NOSTOP;
-  msg[0].buffer    = &reg_addr;
+  msg[0].buffer    = (uint8_t *)&reg_addr;

Review Comment:
   ditto



##########
drivers/sensors/mpu60x0.c:
##########
@@ -870,7 +870,7 @@ static ssize_t mpu_write(FAR struct file *filep, FAR const char *buf,
 
   UNUSED(inode);
   UNUSED(dev);
-  snerr("ERROR: %p %p %d\n", inode, dev, len);
+  snerr("ERROR: %p %p %d\n", inode, dev, (int)len);

Review Comment:
   snerr("ERROR: %p %p %zu\n", inode, dev, len);



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