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Date: Thu, 9 Nov 2023 15:29:48 +0800
From: kernel test robot <yujie.liu@...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/msu.c:131: warning: Function parameter or
member 'msu_base' not described in 'msc'
Hi Alexander,
kernel test robot noticed the following build warnings:
tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: d2f51b3516dade79269ff45eae2a7668ae711b25
commit: aac8da65174a35749fcf21dbca4c1be314b562b5 intel_th: msu: Start handling IRQs
config: x86_64-randconfig-r054-20230808 (https://download.01.org/0day-ci/archive/20231107/202311070100.aVGO5Ve3-lkp@intel.com/config)
compiler: gcc-12 (Debian 12.2.0-14) 12.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20231107/202311070100.aVGO5Ve3-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/r/202311070100.aVGO5Ve3-lkp@intel.com/
All warnings (new ones prefixed by >>):
drivers/hwtracing/intel_th/msu.c:54: warning: Function parameter or member 'msc' not described in 'msc_window'
drivers/hwtracing/intel_th/msu.c:96: warning: bad line:
>> drivers/hwtracing/intel_th/msu.c:131: warning: Function parameter or member 'msu_base' not described in 'msc'
drivers/hwtracing/intel_th/msu.c:131: warning: Function parameter or member 'iter_list' not described in 'msc'
>> drivers/hwtracing/intel_th/msu.c:131: warning: Function parameter or member 'do_irq' not described in 'msc'
drivers/hwtracing/intel_th/msu.c:966: warning: Function parameter or member 'nr_pages' not described in 'msc_buffer_alloc'
drivers/hwtracing/intel_th/msu.c:966: warning: Function parameter or member 'nr_wins' not described in 'msc_buffer_alloc'
drivers/hwtracing/intel_th/msu.c:966: warning: Excess function parameter 'size' description in 'msc_buffer_alloc'
vim +131 drivers/hwtracing/intel_th/msu.c
ba82664c134ef7 Alexander Shishkin 2015-09-22 40
ba82664c134ef7 Alexander Shishkin 2015-09-22 41 /**
ba82664c134ef7 Alexander Shishkin 2015-09-22 42 * struct msc_window - multiblock mode window descriptor
ba82664c134ef7 Alexander Shishkin 2015-09-22 43 * @entry: window list linkage (msc::win_list)
ba82664c134ef7 Alexander Shishkin 2015-09-22 44 * @pgoff: page offset into the buffer that this window starts at
ba82664c134ef7 Alexander Shishkin 2015-09-22 45 * @nr_blocks: number of blocks (pages) in this window
ba82664c134ef7 Alexander Shishkin 2015-09-22 46 * @block: array of block descriptors
ba82664c134ef7 Alexander Shishkin 2015-09-22 47 */
ba82664c134ef7 Alexander Shishkin 2015-09-22 48 struct msc_window {
ba82664c134ef7 Alexander Shishkin 2015-09-22 49 struct list_head entry;
ba82664c134ef7 Alexander Shishkin 2015-09-22 50 unsigned long pgoff;
ba82664c134ef7 Alexander Shishkin 2015-09-22 51 unsigned int nr_blocks;
ba82664c134ef7 Alexander Shishkin 2015-09-22 52 struct msc *msc;
ba82664c134ef7 Alexander Shishkin 2015-09-22 53 struct msc_block block[0];
ba82664c134ef7 Alexander Shishkin 2015-09-22 @54 };
ba82664c134ef7 Alexander Shishkin 2015-09-22 55
ba82664c134ef7 Alexander Shishkin 2015-09-22 56 /**
ba82664c134ef7 Alexander Shishkin 2015-09-22 57 * struct msc_iter - iterator for msc buffer
ba82664c134ef7 Alexander Shishkin 2015-09-22 58 * @entry: msc::iter_list linkage
ba82664c134ef7 Alexander Shishkin 2015-09-22 59 * @msc: pointer to the MSC device
ba82664c134ef7 Alexander Shishkin 2015-09-22 60 * @start_win: oldest window
ba82664c134ef7 Alexander Shishkin 2015-09-22 61 * @win: current window
ba82664c134ef7 Alexander Shishkin 2015-09-22 62 * @offset: current logical offset into the buffer
ba82664c134ef7 Alexander Shishkin 2015-09-22 63 * @start_block: oldest block in the window
ba82664c134ef7 Alexander Shishkin 2015-09-22 64 * @block: block number in the window
ba82664c134ef7 Alexander Shishkin 2015-09-22 65 * @block_off: offset into current block
ba82664c134ef7 Alexander Shishkin 2015-09-22 66 * @wrap_count: block wrapping handling
ba82664c134ef7 Alexander Shishkin 2015-09-22 67 * @eof: end of buffer reached
ba82664c134ef7 Alexander Shishkin 2015-09-22 68 */
ba82664c134ef7 Alexander Shishkin 2015-09-22 69 struct msc_iter {
ba82664c134ef7 Alexander Shishkin 2015-09-22 70 struct list_head entry;
ba82664c134ef7 Alexander Shishkin 2015-09-22 71 struct msc *msc;
ba82664c134ef7 Alexander Shishkin 2015-09-22 72 struct msc_window *start_win;
ba82664c134ef7 Alexander Shishkin 2015-09-22 73 struct msc_window *win;
ba82664c134ef7 Alexander Shishkin 2015-09-22 74 unsigned long offset;
ba82664c134ef7 Alexander Shishkin 2015-09-22 75 int start_block;
ba82664c134ef7 Alexander Shishkin 2015-09-22 76 int block;
ba82664c134ef7 Alexander Shishkin 2015-09-22 77 unsigned int block_off;
ba82664c134ef7 Alexander Shishkin 2015-09-22 78 unsigned int wrap_count;
ba82664c134ef7 Alexander Shishkin 2015-09-22 79 unsigned int eof;
ba82664c134ef7 Alexander Shishkin 2015-09-22 80 };
ba82664c134ef7 Alexander Shishkin 2015-09-22 81
ba82664c134ef7 Alexander Shishkin 2015-09-22 82 /**
ba82664c134ef7 Alexander Shishkin 2015-09-22 83 * struct msc - MSC device representation
ba82664c134ef7 Alexander Shishkin 2015-09-22 84 * @reg_base: register window base address
ba82664c134ef7 Alexander Shishkin 2015-09-22 85 * @thdev: intel_th_device pointer
ba82664c134ef7 Alexander Shishkin 2015-09-22 86 * @win_list: list of windows in multiblock mode
4e0eaf239fb33e Alexander Shishkin 2019-05-03 87 * @single_sgt: single mode buffer
ba82664c134ef7 Alexander Shishkin 2015-09-22 88 * @nr_pages: total number of pages allocated for this buffer
ba82664c134ef7 Alexander Shishkin 2015-09-22 89 * @single_sz: amount of data in single mode
ba82664c134ef7 Alexander Shishkin 2015-09-22 90 * @single_wrap: single mode wrap occurred
ba82664c134ef7 Alexander Shishkin 2015-09-22 91 * @base: buffer's base pointer
ba82664c134ef7 Alexander Shishkin 2015-09-22 92 * @base_addr: buffer's base address
ba82664c134ef7 Alexander Shishkin 2015-09-22 93 * @user_count: number of users of the buffer
ba82664c134ef7 Alexander Shishkin 2015-09-22 94 * @mmap_count: number of mappings
ba82664c134ef7 Alexander Shishkin 2015-09-22 95 * @buf_mutex: mutex to serialize access to buffer-related bits
ba82664c134ef7 Alexander Shishkin 2015-09-22 96
ba82664c134ef7 Alexander Shishkin 2015-09-22 97 * @enabled: MSC is enabled
ba82664c134ef7 Alexander Shishkin 2015-09-22 98 * @wrap: wrapping is enabled
ba82664c134ef7 Alexander Shishkin 2015-09-22 99 * @mode: MSC operating mode
ba82664c134ef7 Alexander Shishkin 2015-09-22 100 * @burst_len: write burst length
ba82664c134ef7 Alexander Shishkin 2015-09-22 101 * @index: number of this MSC in the MSU
ba82664c134ef7 Alexander Shishkin 2015-09-22 102 */
ba82664c134ef7 Alexander Shishkin 2015-09-22 103 struct msc {
ba82664c134ef7 Alexander Shishkin 2015-09-22 104 void __iomem *reg_base;
aac8da65174a35 Alexander Shishkin 2019-05-03 105 void __iomem *msu_base;
ba82664c134ef7 Alexander Shishkin 2015-09-22 106 struct intel_th_device *thdev;
ba82664c134ef7 Alexander Shishkin 2015-09-22 107
ba82664c134ef7 Alexander Shishkin 2015-09-22 108 struct list_head win_list;
4e0eaf239fb33e Alexander Shishkin 2019-05-03 109 struct sg_table single_sgt;
ba82664c134ef7 Alexander Shishkin 2015-09-22 110 unsigned long nr_pages;
ba82664c134ef7 Alexander Shishkin 2015-09-22 111 unsigned long single_sz;
ba82664c134ef7 Alexander Shishkin 2015-09-22 112 unsigned int single_wrap : 1;
ba82664c134ef7 Alexander Shishkin 2015-09-22 113 void *base;
ba82664c134ef7 Alexander Shishkin 2015-09-22 114 dma_addr_t base_addr;
ba82664c134ef7 Alexander Shishkin 2015-09-22 115
ba82664c134ef7 Alexander Shishkin 2015-09-22 116 /* <0: no buffer, 0: no users, >0: active users */
ba82664c134ef7 Alexander Shishkin 2015-09-22 117 atomic_t user_count;
ba82664c134ef7 Alexander Shishkin 2015-09-22 118
ba82664c134ef7 Alexander Shishkin 2015-09-22 119 atomic_t mmap_count;
ba82664c134ef7 Alexander Shishkin 2015-09-22 120 struct mutex buf_mutex;
ba82664c134ef7 Alexander Shishkin 2015-09-22 121
ba82664c134ef7 Alexander Shishkin 2015-09-22 122 struct list_head iter_list;
ba82664c134ef7 Alexander Shishkin 2015-09-22 123
ba82664c134ef7 Alexander Shishkin 2015-09-22 124 /* config */
ba82664c134ef7 Alexander Shishkin 2015-09-22 125 unsigned int enabled : 1,
aac8da65174a35 Alexander Shishkin 2019-05-03 126 wrap : 1,
aac8da65174a35 Alexander Shishkin 2019-05-03 127 do_irq : 1;
ba82664c134ef7 Alexander Shishkin 2015-09-22 128 unsigned int mode;
ba82664c134ef7 Alexander Shishkin 2015-09-22 129 unsigned int burst_len;
ba82664c134ef7 Alexander Shishkin 2015-09-22 130 unsigned int index;
ba82664c134ef7 Alexander Shishkin 2015-09-22 @131 };
ba82664c134ef7 Alexander Shishkin 2015-09-22 132
:::::: The code at line 131 was first introduced by commit
:::::: ba82664c134ef7ab97808f09a3c5e894b0a4900d intel_th: Add Memory Storage Unit driver
:::::: 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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