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Message-ID: <202505091836.sxOEZiIt-lkp@intel.com>
Date: Fri, 9 May 2025 18:42:35 +0800
From: kernel test robot <lkp@...el.com>
To: Zongmin Zhou <min_halo@....com>, gregkh@...uxfoundation.org,
rafael@...nel.org, dakr@...nel.org, markgross@...nel.org,
arnd@...db.de, eric.piel@...mplin-utc.net,
valentina.manea.m@...il.com, shuah@...nel.org, i@...ithal.me
Cc: llvm@...ts.linux.dev, oe-kbuild-all@...ts.linux.dev,
linux-usb@...r.kernel.org, linux-kernel@...r.kernel.org,
Zongmin Zhou <zhouzongmin@...inos.cn>
Subject: Re: [PATCH 2/2] usbip: convert to use faux_device
Hi Zongmin,
kernel test robot noticed the following build warnings:
[auto build test WARNING on usb/usb-testing]
[also build test WARNING on usb/usb-next usb/usb-linus driver-core/driver-core-testing driver-core/driver-core-next driver-core/driver-core-linus char-misc/char-misc-testing char-misc/char-misc-next char-misc/char-misc-linus linus/master v6.15-rc5 next-20250508]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch#_base_tree_information]
url: https://github.com/intel-lab-lkp/linux/commits/Zongmin-Zhou/driver-core-add-device-s-platform_data-set-for-faux-device/20250508-171441
base: https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing
patch link: https://lore.kernel.org/r/2a327b520760271471717fff9b222cdc34967489.1746662386.git.zhouzongmin%40kylinos.cn
patch subject: [PATCH 2/2] usbip: convert to use faux_device
config: x86_64-randconfig-002-20250509 (https://download.01.org/0day-ci/archive/20250509/202505091836.sxOEZiIt-lkp@intel.com/config)
compiler: clang version 20.1.2 (https://github.com/llvm/llvm-project 58df0ef89dd64126512e4ee27b4ac3fd8ddf6247)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250509/202505091836.sxOEZiIt-lkp@intel.com/reproduce)
If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@...el.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202505091836.sxOEZiIt-lkp@intel.com/
All warnings (new ones prefixed by >>):
>> drivers/usb/usbip/vhci_hcd.c:1531:9: warning: variable 'ret' is uninitialized when used here [-Wuninitialized]
1531 | return ret;
| ^~~
drivers/usb/usbip/vhci_hcd.c:1501:12: note: initialize the variable 'ret' to silence this warning
1501 | int i, ret;
| ^
| = 0
drivers/usb/usbip/vhci_hcd.c:1418:12: warning: unused function 'vhci_hcd_suspend' [-Wunused-function]
1418 | static int vhci_hcd_suspend(struct faux_device *fdev, pm_message_t state)
| ^~~~~~~~~~~~~~~~
drivers/usb/usbip/vhci_hcd.c:1462:12: warning: unused function 'vhci_hcd_resume' [-Wunused-function]
1462 | static int vhci_hcd_resume(struct faux_device *fdev)
| ^~~~~~~~~~~~~~~
3 warnings generated.
vim +/ret +1531 drivers/usb/usbip/vhci_hcd.c
04679b3489e048 drivers/staging/usbip/vhci_hcd.c Takahiro Hirofuchi 2008-07-09 1498
0392bbb6f6af31 drivers/staging/usbip/vhci_hcd.c matt mooney 2011-05-19 1499 static int __init vhci_hcd_init(void)
04679b3489e048 drivers/staging/usbip/vhci_hcd.c Takahiro Hirofuchi 2008-07-09 1500 {
0775a9cbc694e8 drivers/usb/usbip/vhci_hcd.c Nobuo Iwata 2016-06-13 1501 int i, ret;
04679b3489e048 drivers/staging/usbip/vhci_hcd.c Takahiro Hirofuchi 2008-07-09 1502
04679b3489e048 drivers/staging/usbip/vhci_hcd.c Takahiro Hirofuchi 2008-07-09 1503 if (usb_disabled())
04679b3489e048 drivers/staging/usbip/vhci_hcd.c Takahiro Hirofuchi 2008-07-09 1504 return -ENODEV;
04679b3489e048 drivers/staging/usbip/vhci_hcd.c Takahiro Hirofuchi 2008-07-09 1505
0775a9cbc694e8 drivers/usb/usbip/vhci_hcd.c Nobuo Iwata 2016-06-13 1506 if (vhci_num_controllers < 1)
0775a9cbc694e8 drivers/usb/usbip/vhci_hcd.c Nobuo Iwata 2016-06-13 1507 vhci_num_controllers = 1;
0775a9cbc694e8 drivers/usb/usbip/vhci_hcd.c Nobuo Iwata 2016-06-13 1508
89a73d281fa4f5 drivers/usb/usbip/vhci_hcd.c Yuyang Du 2017-06-08 1509 vhcis = kcalloc(vhci_num_controllers, sizeof(struct vhci), GFP_KERNEL);
89a73d281fa4f5 drivers/usb/usbip/vhci_hcd.c Yuyang Du 2017-06-08 1510 if (vhcis == NULL)
0775a9cbc694e8 drivers/usb/usbip/vhci_hcd.c Nobuo Iwata 2016-06-13 1511 return -ENOMEM;
0775a9cbc694e8 drivers/usb/usbip/vhci_hcd.c Nobuo Iwata 2016-06-13 1512
0775a9cbc694e8 drivers/usb/usbip/vhci_hcd.c Nobuo Iwata 2016-06-13 1513 for (i = 0; i < vhci_num_controllers; i++) {
17d6b82d2d6d46 drivers/usb/usbip/vhci_hcd.c Hongren Zheng 2023-10-14 1514 void *vhci = &vhcis[i];
1bcae4465d2818 drivers/usb/usbip/vhci_hcd.c Zongmin Zhou 2025-05-08 1515 char vhci_name[16];
1bcae4465d2818 drivers/usb/usbip/vhci_hcd.c Zongmin Zhou 2025-05-08 1516
1bcae4465d2818 drivers/usb/usbip/vhci_hcd.c Zongmin Zhou 2025-05-08 1517 snprintf(vhci_name, 16, "%s.%d", driver_name, i);
b8aaf639b403f0 drivers/usb/usbip/vhci_hcd.c Andy Shevchenko 2023-10-06 1518
1bcae4465d2818 drivers/usb/usbip/vhci_hcd.c Zongmin Zhou 2025-05-08 1519 vhcis[i].fdev = faux_device_create_with_groups(vhci_name, NULL, &vhci_driver, NULL, vhci);
1bcae4465d2818 drivers/usb/usbip/vhci_hcd.c Zongmin Zhou 2025-05-08 1520 if (!vhcis[i].fdev) {
b8aaf639b403f0 drivers/usb/usbip/vhci_hcd.c Andy Shevchenko 2023-10-06 1521 while (i--)
1bcae4465d2818 drivers/usb/usbip/vhci_hcd.c Zongmin Zhou 2025-05-08 1522 faux_device_destroy(vhcis[i].fdev);
dff3565b8e1c0b drivers/usb/usbip/vhci_hcd.c Yuyang Du 2017-06-08 1523 goto err_add_hcd;
dff3565b8e1c0b drivers/usb/usbip/vhci_hcd.c Yuyang Du 2017-06-08 1524 }
0775a9cbc694e8 drivers/usb/usbip/vhci_hcd.c Nobuo Iwata 2016-06-13 1525 }
04679b3489e048 drivers/staging/usbip/vhci_hcd.c Takahiro Hirofuchi 2008-07-09 1526
b8aaf639b403f0 drivers/usb/usbip/vhci_hcd.c Andy Shevchenko 2023-10-06 1527 return 0;
04679b3489e048 drivers/staging/usbip/vhci_hcd.c Takahiro Hirofuchi 2008-07-09 1528
dff3565b8e1c0b drivers/usb/usbip/vhci_hcd.c Yuyang Du 2017-06-08 1529 err_add_hcd:
89a73d281fa4f5 drivers/usb/usbip/vhci_hcd.c Yuyang Du 2017-06-08 1530 kfree(vhcis);
04679b3489e048 drivers/staging/usbip/vhci_hcd.c Takahiro Hirofuchi 2008-07-09 @1531 return ret;
04679b3489e048 drivers/staging/usbip/vhci_hcd.c Takahiro Hirofuchi 2008-07-09 1532 }
04679b3489e048 drivers/staging/usbip/vhci_hcd.c Takahiro Hirofuchi 2008-07-09 1533
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
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