Hi Andy,

[auto build test WARNING on usb/usb-testing]
[also build test WARNING on v4.12-rc4 next-20170609]
[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/Andy-Shevchenko/usb-misc-usbsevseg-Use-__sysfs_match_string-helper/20170610-055240
base:   https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git 
usb-testing
config: x86_64-randconfig-b0-06101036 (attached as .config)
compiler: gcc-4.4 (Debian 4.4.7-8) 4.4.7
reproduce:
        # save the attached .config to linux build tree
        make ARCH=x86_64 

All warnings (new ones prefixed by >>):

   drivers/usb/misc/usbsevseg.c: In function 'set_attr_textmode':
>> drivers/usb/misc/usbsevseg.c:307: warning: passing argument 1 of 
>> '__sysfs_match_string' from incompatible pointer type
   include/linux/string.h:146: note: expected 'const char * const*' but 
argument is of type 'char **'

vim +/__sysfs_match_string +307 drivers/usb/misc/usbsevseg.c

   291                          strcat(buf, " ");
   292                  }
   293          }
   294          strcat(buf, "\n");
   295  
   296  
   297          return strlen(buf);
   298  }
   299  
   300  static ssize_t set_attr_textmode(struct device *dev,
   301          struct device_attribute *attr, const char *buf, size_t count)
   302  {
   303          struct usb_interface *intf = to_usb_interface(dev);
   304          struct usb_sevsegdev *mydev = usb_get_intfdata(intf);
   305          int i;
   306  
 > 307          i = __sysfs_match_string(display_textmodes, -1, buf);
   308          if (i < 0)
   309                  return i;
   310  
   311          mydev->textmode = i;
   312          update_display_visual(mydev, GFP_KERNEL);
   313          return count;
   314  }
   315  

---
0-DAY kernel test infrastructure                Open Source Technology Center
https://lists.01.org/pipermail/kbuild-all                   Intel Corporation

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