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Date:   Sat, 11 Nov 2023 21:19:46 +0800
From:   kernel test robot <lkp@...el.com>
To:     Krishna chaitanya chundru <quic_krichai@...cinc.com>,
        Manivannan Sadhasivam <mani@...nel.org>,
        Steven Rostedt <rostedt@...dmis.org>,
        Masami Hiramatsu <mhiramat@...nel.org>
Cc:     oe-kbuild-all@...ts.linux.dev, linux-kernel@...r.kernel.org,
        mhi@...ts.linux.dev, linux-arm-msm@...r.kernel.org,
        linux-trace-kernel@...r.kernel.org, quic_vbadigan@...cinc.com,
        quic_ramkri@...cinc.com, quic_nitegupt@...cinc.com,
        quic_skananth@...cinc.com, quic_parass@...cinc.com,
        Krishna chaitanya chundru <quic_krichai@...cinc.com>
Subject: Re: [PATCH v4] bus: mhi: host: Add tracing support

Hi Krishna,

kernel test robot noticed the following build warnings:

[auto build test WARNING on 3006adf3be79cde4d14b1800b963b82b6e5572e0]

url:    https://github.com/intel-lab-lkp/linux/commits/Krishna-chaitanya-chundru/bus-mhi-host-Add-tracing-support/20231111-135816
base:   3006adf3be79cde4d14b1800b963b82b6e5572e0
patch link:    https://lore.kernel.org/r/20231111-ftrace_support-v4-1-c83602399461%40quicinc.com
patch subject: [PATCH v4] bus: mhi: host: Add tracing support
config: x86_64-randconfig-123-20231111 (https://download.01.org/0day-ci/archive/20231111/202311112133.5QrqkZ0r-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/20231111/202311112133.5QrqkZ0r-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/202311112133.5QrqkZ0r-lkp@intel.com/

sparse warnings: (new ones prefixed by >>)
   drivers/bus/mhi/host/init.c: note: in included file (through include/trace/trace_events.h, include/trace/define_trace.h, drivers/bus/mhi/host/trace.h):
>> drivers/bus/mhi/host/./trace.h:17:1: sparse: sparse: cast to restricted __le64
>> drivers/bus/mhi/host/./trace.h:17:1: sparse: sparse: restricted __le64 degrades to integer
>> drivers/bus/mhi/host/./trace.h:17:1: sparse: sparse: restricted __le64 degrades to integer
>> drivers/bus/mhi/host/./trace.h:17:1: sparse: sparse: cast to restricted __le32
>> drivers/bus/mhi/host/./trace.h:17:1: sparse: sparse: restricted __le32 degrades to integer
>> drivers/bus/mhi/host/./trace.h:17:1: sparse: sparse: restricted __le32 degrades to integer
>> drivers/bus/mhi/host/./trace.h:17:1: sparse: sparse: cast to restricted __le32
>> drivers/bus/mhi/host/./trace.h:17:1: sparse: sparse: restricted __le32 degrades to integer
>> drivers/bus/mhi/host/./trace.h:17:1: sparse: sparse: restricted __le32 degrades to integer
   drivers/bus/mhi/host/./trace.h:99:1: sparse: sparse: cast to restricted __le64
   drivers/bus/mhi/host/./trace.h:99:1: sparse: sparse: restricted __le64 degrades to integer
   drivers/bus/mhi/host/./trace.h:99:1: sparse: sparse: restricted __le64 degrades to integer
   drivers/bus/mhi/host/./trace.h:99:1: sparse: sparse: cast to restricted __le32
   drivers/bus/mhi/host/./trace.h:99:1: sparse: sparse: restricted __le32 degrades to integer
   drivers/bus/mhi/host/./trace.h:99:1: sparse: sparse: restricted __le32 degrades to integer
   drivers/bus/mhi/host/./trace.h:99:1: sparse: sparse: cast to restricted __le32
   drivers/bus/mhi/host/./trace.h:99:1: sparse: sparse: restricted __le32 degrades to integer
   drivers/bus/mhi/host/./trace.h:99:1: sparse: sparse: restricted __le32 degrades to integer
   drivers/bus/mhi/host/./trace.h:123:1: sparse: sparse: cast to restricted __le64
   drivers/bus/mhi/host/./trace.h:123:1: sparse: sparse: restricted __le64 degrades to integer
   drivers/bus/mhi/host/./trace.h:123:1: sparse: sparse: restricted __le64 degrades to integer
   drivers/bus/mhi/host/./trace.h:123:1: sparse: sparse: cast to restricted __le32
   drivers/bus/mhi/host/./trace.h:123:1: sparse: sparse: restricted __le32 degrades to integer
   drivers/bus/mhi/host/./trace.h:123:1: sparse: sparse: restricted __le32 degrades to integer
   drivers/bus/mhi/host/./trace.h:123:1: sparse: sparse: cast to restricted __le32
   drivers/bus/mhi/host/./trace.h:123:1: sparse: sparse: restricted __le32 degrades to integer
   drivers/bus/mhi/host/./trace.h:123:1: sparse: sparse: restricted __le32 degrades to integer

vim +17 drivers/bus/mhi/host/./trace.h

    16	
  > 17	TRACE_EVENT(mhi_gen_tre,
    18	
    19		TP_PROTO(const char *name, int ch_num, u64 wp, __le64 tre_ptr,
    20			 __le32 dword0, __le32 dword1),
    21	
    22		TP_ARGS(name, ch_num, wp, tre_ptr, dword0, dword1),
    23	
    24		TP_STRUCT__entry(
    25			__string(name, name)
    26			__field(int, ch_num)
    27			__field(u64, wp)
    28			__field(__le64, tre_ptr)
    29			__field(__le32, dword0)
    30			__field(__le32, dword1)
    31		),
    32	
    33		TP_fast_assign(
    34			__assign_str(name, name);
    35			__entry->ch_num = ch_num;
    36			__entry->wp = wp;
    37			__entry->tre_ptr = tre_ptr;
    38			__entry->dword0 = dword0;
    39			__entry->dword1 = dword1;
    40		),
    41	
    42		TP_printk("%s: Chan: %d WP: 0x%llx TRE: 0x%llx 0x%08x 0x%08x\n",
    43			  __get_str(name), __entry->ch_num, __entry->wp, __entry->tre_ptr,
    44			  __entry->dword0, __entry->dword1)
    45	);
    46	

-- 
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki

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