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Date: Sun, 26 Nov 2023 15:34:08 +0800
From: kernel test robot <lkp@...el.com>
To: Alexander Shishkin <alexander.shishkin@...ux.intel.com>
Cc: oe-kbuild-all@...ts.linux.dev, linux-kernel@...r.kernel.org
Subject: drivers/hwtracing/intel_th/core.c:795: warning: No description found
for parameter 'drvdata'
tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: 0f5cc96c367f2e780eb492cc9cab84e3b2ca88da
commit: 3321371b5d648479058fa6f9441168abbc1467c9 intel_th: pci: Use drvdata for quirks
date: 6 years ago
config: i386-buildonly-randconfig-004-20231120 (https://download.01.org/0day-ci/archive/20231126/202311261534.mYloP1GL-lkp@intel.com/config)
compiler: gcc-7 (Ubuntu 7.5.0-6ubuntu2) 7.5.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20231126/202311261534.mYloP1GL-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/202311261534.mYloP1GL-lkp@intel.com/
All warnings (new ones prefixed by >>):
>> drivers/hwtracing/intel_th/core.c:795: warning: No description found for parameter 'drvdata'
vim +/drvdata +795 drivers/hwtracing/intel_th/core.c
39f4034693b7c7 Alexander Shishkin 2015-09-22 784
39f4034693b7c7 Alexander Shishkin 2015-09-22 785 /**
39f4034693b7c7 Alexander Shishkin 2015-09-22 786 * intel_th_alloc() - allocate a new Intel TH device and its subdevices
39f4034693b7c7 Alexander Shishkin 2015-09-22 787 * @dev: parent device
39f4034693b7c7 Alexander Shishkin 2015-09-22 788 * @devres: parent's resources
39f4034693b7c7 Alexander Shishkin 2015-09-22 789 * @ndevres: number of resources
39f4034693b7c7 Alexander Shishkin 2015-09-22 790 * @irq: irq number
39f4034693b7c7 Alexander Shishkin 2015-09-22 791 */
39f4034693b7c7 Alexander Shishkin 2015-09-22 792 struct intel_th *
3321371b5d6484 Alexander Shishkin 2017-08-18 793 intel_th_alloc(struct device *dev, struct intel_th_drvdata *drvdata,
3321371b5d6484 Alexander Shishkin 2017-08-18 794 struct resource *devres, unsigned int ndevres, int irq)
39f4034693b7c7 Alexander Shishkin 2015-09-22 @795 {
39f4034693b7c7 Alexander Shishkin 2015-09-22 796 struct intel_th *th;
39f4034693b7c7 Alexander Shishkin 2015-09-22 797 int err;
39f4034693b7c7 Alexander Shishkin 2015-09-22 798
39f4034693b7c7 Alexander Shishkin 2015-09-22 799 th = kzalloc(sizeof(*th), GFP_KERNEL);
39f4034693b7c7 Alexander Shishkin 2015-09-22 800 if (!th)
39f4034693b7c7 Alexander Shishkin 2015-09-22 801 return ERR_PTR(-ENOMEM);
39f4034693b7c7 Alexander Shishkin 2015-09-22 802
39f4034693b7c7 Alexander Shishkin 2015-09-22 803 th->id = ida_simple_get(&intel_th_ida, 0, 0, GFP_KERNEL);
39f4034693b7c7 Alexander Shishkin 2015-09-22 804 if (th->id < 0) {
39f4034693b7c7 Alexander Shishkin 2015-09-22 805 err = th->id;
39f4034693b7c7 Alexander Shishkin 2015-09-22 806 goto err_alloc;
39f4034693b7c7 Alexander Shishkin 2015-09-22 807 }
39f4034693b7c7 Alexander Shishkin 2015-09-22 808
39f4034693b7c7 Alexander Shishkin 2015-09-22 809 th->major = __register_chrdev(0, 0, TH_POSSIBLE_OUTPUTS,
39f4034693b7c7 Alexander Shishkin 2015-09-22 810 "intel_th/output", &intel_th_output_fops);
39f4034693b7c7 Alexander Shishkin 2015-09-22 811 if (th->major < 0) {
39f4034693b7c7 Alexander Shishkin 2015-09-22 812 err = th->major;
39f4034693b7c7 Alexander Shishkin 2015-09-22 813 goto err_ida;
39f4034693b7c7 Alexander Shishkin 2015-09-22 814 }
39f4034693b7c7 Alexander Shishkin 2015-09-22 815 th->dev = dev;
3321371b5d6484 Alexander Shishkin 2017-08-18 816 th->drvdata = drvdata;
39f4034693b7c7 Alexander Shishkin 2015-09-22 817
a753bfcfdb1f31 Alexander Shishkin 2017-08-10 818 th->resource = devres;
a753bfcfdb1f31 Alexander Shishkin 2017-08-10 819 th->num_resources = ndevres;
a753bfcfdb1f31 Alexander Shishkin 2017-08-10 820 th->irq = irq;
a753bfcfdb1f31 Alexander Shishkin 2017-08-10 821
d7b1787161b78a Alexander Shishkin 2016-02-15 822 dev_set_drvdata(dev, th);
d7b1787161b78a Alexander Shishkin 2016-02-15 823
142dfeb2020960 Alexander Shishkin 2016-06-22 824 pm_runtime_no_callbacks(dev);
142dfeb2020960 Alexander Shishkin 2016-06-22 825 pm_runtime_put(dev);
142dfeb2020960 Alexander Shishkin 2016-06-22 826 pm_runtime_allow(dev);
142dfeb2020960 Alexander Shishkin 2016-06-22 827
a753bfcfdb1f31 Alexander Shishkin 2017-08-10 828 err = intel_th_populate(th);
a753bfcfdb1f31 Alexander Shishkin 2017-08-10 829 if (err) {
a753bfcfdb1f31 Alexander Shishkin 2017-08-10 830 /* free the subdevices and undo everything */
a753bfcfdb1f31 Alexander Shishkin 2017-08-10 831 intel_th_free(th);
a753bfcfdb1f31 Alexander Shishkin 2017-08-10 832 return ERR_PTR(err);
a753bfcfdb1f31 Alexander Shishkin 2017-08-10 833 }
39f4034693b7c7 Alexander Shishkin 2015-09-22 834
39f4034693b7c7 Alexander Shishkin 2015-09-22 835 return th;
39f4034693b7c7 Alexander Shishkin 2015-09-22 836
39f4034693b7c7 Alexander Shishkin 2015-09-22 837 err_ida:
39f4034693b7c7 Alexander Shishkin 2015-09-22 838 ida_simple_remove(&intel_th_ida, th->id);
39f4034693b7c7 Alexander Shishkin 2015-09-22 839
39f4034693b7c7 Alexander Shishkin 2015-09-22 840 err_alloc:
39f4034693b7c7 Alexander Shishkin 2015-09-22 841 kfree(th);
39f4034693b7c7 Alexander Shishkin 2015-09-22 842
39f4034693b7c7 Alexander Shishkin 2015-09-22 843 return ERR_PTR(err);
39f4034693b7c7 Alexander Shishkin 2015-09-22 844 }
39f4034693b7c7 Alexander Shishkin 2015-09-22 845 EXPORT_SYMBOL_GPL(intel_th_alloc);
39f4034693b7c7 Alexander Shishkin 2015-09-22 846
:::::: The code at line 795 was first introduced by commit
:::::: 39f4034693b7c7bd1fe4cb58c93259d600f55561 intel_th: Add driver infrastructure for Intel(R) Trace Hub devices
:::::: TO: Alexander Shishkin <alexander.shishkin@...ux.intel.com>
:::::: CC: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
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