maXTouch: Check for successful memory allocation was backward

drivers/input/mxt.c

@@ -1498,7 +1498,7 @@ static int mxt_hwinitialize(FAR struct mxt_dev_s *priv)
   /* Allocate memory for the object table */
 
   priv->objtab = kzalloc(info->nobjects * sizeof(struct mxt_object_s));
-  if (priv->objtab != NULL)
+  if (priv->objtab == NULL)
     {
       idbg("ERROR: Failed to allocate object table\n");
       return -ENOMEM;
@@ -1568,7 +1568,7 @@ static int mxt_hwinitialize(FAR struct mxt_dev_s *priv)
 
   priv->sample = (FAR struct mxt_sample_s *)
     kzalloc(nslots * sizeof(struct mxt_sample_s));
-  if (!priv->sample)
+  if (priv->sample == NULL)
     {
       idbg("ERROR: Failed to allocate object table\n");
       goto errout_with_objtab;
@@ -1632,7 +1632,7 @@ int mxt_register(FAR struct i2c_dev_s *i2c,
   /* Create and initialize a maXTouch device driver instance */
 
   priv = (FAR struct mxt_dev_s *)kzalloc(sizeof(struct mxt_dev_s));
-  if (!priv)
+  if (priv == NULL)
     {
       idbg("ERROR: Failed allocate device structure\n");
       return -ENOMEM;

include/nuttx/i2c.h

@@ -83,11 +83,12 @@
 
 /* Bit definitions for the flags field in struct i2c_msg_s */
 
-#define I2C_M_READ           0x0001          /* read data, from slave to master */
-#define I2C_M_TEN            0x0002          /* ten bit address */
-#define I2C_M_NORESTART      0x0080          /* message should not begin with (re-)start of transfer */
+#define I2C_M_READ           0x0001 /* Read data, from slave to master */
+#define I2C_M_TEN            0x0002 /* Ten bit address */
+#define I2C_M_NORESTART      0x0080 /* Message should not begin with
+                                     * (re-)start of transfer */
 
-/* Access macros */
+/* Access macros ************************************************************/
 
 /****************************************************************************
  * Name: I2C_SETFREQUENCY