drivers/phy/motorola/phy-mapphone-mdm6600.c:188:16: warning: 'values[0]' is used uninitialized in this function

[kbuild test robot]

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git 
master
head:   18b7fd1c93e5204355ddbf2608a097d64df81b88
commit: 5d1ebbda0318b1ba55eaa1fae3fd867af17b0774 phy: mapphone-mdm6600: Add USB 
PHY driver for MDM6600 on Droid 4
date:   4 weeks ago
config: x86_64-randconfig-a0-04151127 (attached as .config)
compiler: gcc-7 (Debian 7.3.0-1) 7.3.0
reproduce:
        git checkout 5d1ebbda0318b1ba55eaa1fae3fd867af17b0774
        # save the attached .config to linux build tree
        make ARCH=x86_64 

All warnings (new ones prefixed by >>):

   drivers/phy/motorola/phy-mapphone-mdm6600.c: In function 
'phy_mdm6600_status':
>> drivers/phy/motorola/phy-mapphone-mdm6600.c:188:16: warning: 'values[0]' is 
>> used uninitialized in this function [-Wuninitialized]
      val |= values[i] << i;
             ~~~~~~^~~
   drivers/phy/motorola/phy-mapphone-mdm6600.c:188:16: warning: 'values[1]' is 
used uninitialized in this function [-Wuninitialized]
   drivers/phy/motorola/phy-mapphone-mdm6600.c:188:16: warning: 'values[2]' is 
used uninitialized in this function [-Wuninitialized]

vim +188 drivers/phy/motorola/phy-mapphone-mdm6600.c

   166  
   167  /**
   168   * phy_mdm6600_status() - read mdm6600 status lines
   169   * @ddata: device driver data
   170   */
   171  static void phy_mdm6600_status(struct work_struct *work)
   172  {
   173          struct phy_mdm6600 *ddata;
   174          struct device *dev;
   175          int values[PHY_MDM6600_NR_STATUS_LINES];
   176          int error, i, val = 0;
   177  
   178          ddata = container_of(work, struct phy_mdm6600, 
status_work.work);
   179          dev = ddata->dev;
   180  
   181          error = gpiod_get_array_value_cansleep(PHY_MDM6600_NR_CMD_LINES,
   182                                                 
ddata->status_gpios->desc,
   183                                                 values);
   184          if (error)
   185                  return;
   186  
   187          for (i = 0; i < PHY_MDM6600_NR_CMD_LINES; i++) {
 > 188                  val |= values[i] << i;
   189                  dev_dbg(ddata->dev, "XXX %s: i: %i values[i]: %i val: 
%i\n",
   190                          __func__, i, values[i], val);
   191          }
   192          ddata->status = val;
   193  
   194          dev_info(dev, "modem status: %i %s\n",
   195                   ddata->status,
   196                   phy_mdm6600_status_name[ddata->status & 7]);
   197          complete(&ddata->ack);
   198  }
   199  

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