linux-kernel - drivers/clocksource/timer-ti-dm.c:82: warning: Function parameter or member 'val' not described in 'dmtimer

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Message-ID: <202308171822.ZcUAzWPw-lkp@intel.com>
Date:   Thu, 17 Aug 2023 19:00:01 +0800
From:   kernel test robot <lkp@...el.com>
To:     Tony Lindgren <tony@...mide.com>
Cc:     llvm@...ts.linux.dev, oe-kbuild-all@...ts.linux.dev,
        linux-kernel@...r.kernel.org,
        Daniel Lezcano <daniel.lezcano@...aro.org>,
        Janusz Krzysztofik <jmkrzyszt@...il.com>
Subject: drivers/clocksource/timer-ti-dm.c:82: warning: Function parameter or
 member 'val' not described in 'dmtimer_write'

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   4853c74bd7ab7fdb83f319bd9ace8a08c031e9b6
commit: 49cd16bb573e43dc2ee64d734b9b545475dbb35f clocksource/drivers/timer-ti-dm: Simplify register writes with dmtimer_write()
date:   11 months ago
config: riscv-randconfig-r002-20230817 (https://download.01.org/0day-ci/archive/20230817/202308171822.ZcUAzWPw-lkp@intel.com/config)
compiler: clang version 15.0.7 (https://github.com/llvm/llvm-project.git 8dfdcc7b7bf66834a761bd8de445840ef68e4d1a)
reproduce: (https://download.01.org/0day-ci/archive/20230817/202308171822.ZcUAzWPw-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/202308171822.ZcUAzWPw-lkp@intel.com/

All warnings (new ones prefixed by >>):

>> drivers/clocksource/timer-ti-dm.c:82: warning: Function parameter or member 'val' not described in 'dmtimer_write'
>> drivers/clocksource/timer-ti-dm.c:82: warning: Excess function parameter 'value' description in 'dmtimer_write'


vim +82 drivers/clocksource/timer-ti-dm.c

41e79b1d458477 Tony Lindgren 2022-04-08  70  
49cd16bb573e43 Tony Lindgren 2022-08-15  71  /**
49cd16bb573e43 Tony Lindgren 2022-08-15  72   * dmtimer_write - write timer registers in posted and non-posted mode
49cd16bb573e43 Tony Lindgren 2022-08-15  73   * @timer:      timer pointer over which write operation is to perform
49cd16bb573e43 Tony Lindgren 2022-08-15  74   * @reg:        lowest byte holds the register offset
49cd16bb573e43 Tony Lindgren 2022-08-15  75   * @value:      data to write into the register
49cd16bb573e43 Tony Lindgren 2022-08-15  76   *
49cd16bb573e43 Tony Lindgren 2022-08-15  77   * The posted mode bit is encoded in reg. Note that in posted mode, the write
49cd16bb573e43 Tony Lindgren 2022-08-15  78   * pending bit must be checked. Otherwise a write on a register which has a
49cd16bb573e43 Tony Lindgren 2022-08-15  79   * pending write will be lost.
49cd16bb573e43 Tony Lindgren 2022-08-15  80   */
49cd16bb573e43 Tony Lindgren 2022-08-15  81  static inline void dmtimer_write(struct omap_dm_timer *timer, u32 reg, u32 val)
41e79b1d458477 Tony Lindgren 2022-04-08 @82  {
49cd16bb573e43 Tony Lindgren 2022-08-15  83  	u16 wp, offset;
49cd16bb573e43 Tony Lindgren 2022-08-15  84  
49cd16bb573e43 Tony Lindgren 2022-08-15  85  	wp = reg >> WPSHIFT;
49cd16bb573e43 Tony Lindgren 2022-08-15  86  	offset = reg & 0xff;
49cd16bb573e43 Tony Lindgren 2022-08-15  87  
49cd16bb573e43 Tony Lindgren 2022-08-15  88  	/* Wait for a possible write pending bit in posted mode */
49cd16bb573e43 Tony Lindgren 2022-08-15  89  	if (wp && timer->posted)
49cd16bb573e43 Tony Lindgren 2022-08-15  90  		while (readl_relaxed(timer->pend) & wp)
41e79b1d458477 Tony Lindgren 2022-04-08  91  			cpu_relax();
41e79b1d458477 Tony Lindgren 2022-04-08  92  
49cd16bb573e43 Tony Lindgren 2022-08-15  93  	writel_relaxed(val, timer->func_base + offset);
41e79b1d458477 Tony Lindgren 2022-04-08  94  }
41e79b1d458477 Tony Lindgren 2022-04-08  95  

:::::: The code at line 82 was first introduced by commit
:::::: 41e79b1d458477212d0a880c87622bcaa69ab3ea clocksource/drivers/timer-ti-dm: Move inline functions to driver for am6

:::::: TO: Tony Lindgren <tony@...mide.com>
:::::: CC: Daniel Lezcano <daniel.lezcano@...aro.org>

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