linux-kernel - Re: [PATCH] random: remove unused argument from add_interrupt

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Message-ID: <201804301721.JEar9rKK%fengguang.wu@intel.com>
Date:   Mon, 30 Apr 2018 17:56:08 +0800
From:   kbuild test robot <lkp@...el.com>
To:     Sultan Alsawaf <sultanxda@...il.com>
Cc:     kbuild-all@...org, linux-kernel@...r.kernel.org, tytso@....edu
Subject: Re: [PATCH] random: remove unused argument from
 add_interrupt_randomness()

Hi Sultan,

Thank you for the patch! Perhaps something to improve:

[auto build test WARNING on linus/master]
[also build test WARNING on v4.17-rc3 next-20180426]
[if your patch is applied to the wrong git tree, please drop us a note to help improve the system]

url:    https://github.com/0day-ci/linux/commits/Sultan-Alsawaf/random-remove-unused-argument-from-add_interrupt_randomness/20180430-111445
reproduce:
        # apt-get install sparse
        make ARCH=x86_64 allmodconfig
        make C=1 CF=-D__CHECK_ENDIAN__


sparse warnings: (new ones prefixed by >>)

>> drivers/hv/hv.c:118:33: sparse: too many arguments for function add_interrupt_randomness
   drivers/hv/hv.c: In function 'hv_stimer0_isr':
   drivers/hv/hv.c:118:2: error: too many arguments to function 'add_interrupt_randomness'
     add_interrupt_randomness(stimer0_vector, 0);
     ^~~~~~~~~~~~~~~~~~~~~~~~
   In file included from drivers/hv/hv.c:30:0:
   include/linux/random.h:35:13: note: declared here
    extern void add_interrupt_randomness(int irq) __latent_entropy;
                ^~~~~~~~~~~~~~~~~~~~~~~~

vim +118 drivers/hv/hv.c

3e7ee490 drivers/staging/hv/Hv.c Hank Janssen   2009-07-13  105  
248e742a drivers/hv/hv.c         Michael Kelley 2018-03-04  106  /*
248e742a drivers/hv/hv.c         Michael Kelley 2018-03-04  107   * ISR for when stimer0 is operating in Direct Mode.  Direct Mode
248e742a drivers/hv/hv.c         Michael Kelley 2018-03-04  108   * does not use VMbus or any VMbus messages, so process here and not
248e742a drivers/hv/hv.c         Michael Kelley 2018-03-04  109   * in the VMbus driver code.
248e742a drivers/hv/hv.c         Michael Kelley 2018-03-04  110   */
248e742a drivers/hv/hv.c         Michael Kelley 2018-03-04  111  
248e742a drivers/hv/hv.c         Michael Kelley 2018-03-04  112  static void hv_stimer0_isr(void)
248e742a drivers/hv/hv.c         Michael Kelley 2018-03-04  113  {
248e742a drivers/hv/hv.c         Michael Kelley 2018-03-04  114  	struct hv_per_cpu_context *hv_cpu;
248e742a drivers/hv/hv.c         Michael Kelley 2018-03-04  115  
248e742a drivers/hv/hv.c         Michael Kelley 2018-03-04  116  	hv_cpu = this_cpu_ptr(hv_context.cpu_context);
248e742a drivers/hv/hv.c         Michael Kelley 2018-03-04  117  	hv_cpu->clk_evt->event_handler(hv_cpu->clk_evt);
248e742a drivers/hv/hv.c         Michael Kelley 2018-03-04 @118  	add_interrupt_randomness(stimer0_vector, 0);
248e742a drivers/hv/hv.c         Michael Kelley 2018-03-04  119  }
248e742a drivers/hv/hv.c         Michael Kelley 2018-03-04  120  

:::::: The code at line 118 was first introduced by commit
:::::: 248e742a396e7f00b283f1c56e14b1bef6e3ec56 Drivers: hv: vmbus: Implement Direct Mode for stimer0

:::::: TO: Michael Kelley <mhkelley@...look.com>
:::::: CC: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

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