[linux-next:master 4010/5792] drivers/acpi/scan.c:615:35: warning: Uninitialized variable: acpi_device_bus_id->bus_id [uninitvar]

[linux-next:master 4010/5792] drivers/acpi/scan.c:615:35: warning: Uninitialized variable: acpi_device_bus_id->bus_id [uninitvar]

[kernel test robot]

[-- Attachment #1: Type: text/plain, Size: 2789 bytes --]

:::::: 
:::::: Manual check reason: "low confidence static check warning: drivers/acpi/scan.c:615:35: warning: Uninitialized variable: acpi_device_bus_id->bus_id [uninitvar]"
:::::: 

CC: kbuild-all(a)lists.01.org
BCC: lkp(a)intel.com
CC: Linux Memory Management List <linux-mm@kvack.org>
TO: "Rafael J. Wysocki" <rjw@rjwysocki.net>
CC: Andy Shevchenko <andriy.shevchenko@linux.intel.com>

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master
head:   aab35c3d5112df6e329a1a5a5a1881e5c4ca3821
commit: a976a2ac7708c63257d42707c8423047136797a0 [4010/5792] ACPI: scan: Walk ACPI device's children using driver core
:::::: branch date: 11 hours ago
:::::: commit date: 6 days ago
compiler: gcc-11 (Debian 11.3.0-3) 11.3.0
reproduce (cppcheck warning):
        # apt-get install cppcheck
        git checkout a976a2ac7708c63257d42707c8423047136797a0
        cppcheck --quiet --enable=style,performance,portability --template=gcc FILE

If you fix the issue, kindly add following tag where applicable
Reported-by: kernel test robot <lkp@intel.com>


cppcheck possible warnings: (new ones prefixed by >>, may not real problems)

>> drivers/acpi/scan.c:615:35: warning: Uninitialized variable: acpi_device_bus_id->bus_id [uninitvar]
     if (!strcmp(acpi_device_bus_id->bus_id, dev_id))
                                     ^

vim +615 drivers/acpi/scan.c

78ea4639a7647f Rafael J. Wysocki 2014-02-04  608  
c1013ff7a5472d Rafael J. Wysocki 2021-01-14  609  static struct acpi_device_bus_id *acpi_device_bus_id_match(const char *dev_id)
c1013ff7a5472d Rafael J. Wysocki 2021-01-14  610  {
c1013ff7a5472d Rafael J. Wysocki 2021-01-14  611  	struct acpi_device_bus_id *acpi_device_bus_id;
c1013ff7a5472d Rafael J. Wysocki 2021-01-14  612  
c1013ff7a5472d Rafael J. Wysocki 2021-01-14  613  	/* Find suitable bus_id and instance number in acpi_bus_id_list. */
c1013ff7a5472d Rafael J. Wysocki 2021-01-14  614  	list_for_each_entry(acpi_device_bus_id, &acpi_bus_id_list, node) {
c1013ff7a5472d Rafael J. Wysocki 2021-01-14 @615  		if (!strcmp(acpi_device_bus_id->bus_id, dev_id))
c1013ff7a5472d Rafael J. Wysocki 2021-01-14  616  			return acpi_device_bus_id;
c1013ff7a5472d Rafael J. Wysocki 2021-01-14  617  	}
c1013ff7a5472d Rafael J. Wysocki 2021-01-14  618  	return NULL;
c1013ff7a5472d Rafael J. Wysocki 2021-01-14  619  }
c1013ff7a5472d Rafael J. Wysocki 2021-01-14  620  

:::::: The code at line 615 was first introduced by commit
:::::: c1013ff7a5472db637c56bb6237f8343398c03a7 ACPI: scan: Rearrange memory allocation in acpi_device_add()

:::::: TO: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
:::::: CC: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

-- 
0-DAY CI Kernel Test Service
https://01.org/lkp