[nvdimm:libnvdimm-pending 286/291] drivers/acpi/osl.c:769:14: warning: variable 'status' set but not used

From: kbuild test robot <lkp@intel.com>
To: kbuild-all@lists.01.org
Subject: [nvdimm:libnvdimm-pending 286/291] drivers/acpi/osl.c:769:14: warning: variable 'status' set but not used
Date: Tue, 19 May 2020 18:56:50 +0800	[thread overview]
Message-ID: <202005191844.zcZfmWCh%lkp@intel.com> (raw)

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tree:   https://git.kernel.org/pub/scm/linux/kernel/git/djbw/nvdimm.git libnvdimm-pending
head:   4e2f899e682d1e6c647651bc36bcdba3b3577485
commit: ff99d8c56c8e8d60122b87333e3b807fd1638431 [286/291] ACPI: Drop rcu usage for MMIO mappings
config: i386-allyesconfig (attached as .config)
compiler: gcc-7 (Ubuntu 7.5.0-6ubuntu2) 7.5.0
reproduce:
        git checkout ff99d8c56c8e8d60122b87333e3b807fd1638431
        # save the attached .config to linux build tree
        make ARCH=i386 

If you fix the issue, kindly add following tag as appropriate
Reported-by: kbuild test robot <lkp@intel.com>

All warnings (new ones prefixed by >>, old ones prefixed by <<):

drivers/acpi/osl.c: In function 'acpi_os_vprintf':
drivers/acpi/osl.c:151:2: warning: function 'acpi_os_vprintf' might be a candidate for 'gnu_printf' format attribute [-Wsuggest-attribute=format]
vsprintf(buffer, fmt, args);
^~~~~~~~
drivers/acpi/osl.c: In function 'acpi_os_write_memory':
>> drivers/acpi/osl.c:769:14: warning: variable 'status' set but not used [-Wunused-but-set-variable]
acpi_status status;
^~~~~~

vim +/status +769 drivers/acpi/osl.c

d2b7355684cdcf Dan Williams 2020-05-13  764  
e615bf5b551986 Myron Stowe  2012-01-20  765  acpi_status
653f4b538f66d3 Bob Moore    2012-02-14  766  acpi_os_write_memory(acpi_physical_address phys_addr, u64 value, u32 width)
e615bf5b551986 Myron Stowe  2012-01-20  767  {
e615bf5b551986 Myron Stowe  2012-01-20  768  	unsigned int size = width / 8;
d2b7355684cdcf Dan Williams 2020-05-13 @769  	acpi_status status;
ff99d8c56c8e8d Dan Williams 2020-04-27  770  	bool did_fallback = false;
ff99d8c56c8e8d Dan Williams 2020-04-27  771  	void __iomem *virt_addr;
e615bf5b551986 Myron Stowe  2012-01-20  772  
ff99d8c56c8e8d Dan Williams 2020-04-27  773  	virt_addr = acpi_os_rw_map(phys_addr, size, &did_fallback);
e615bf5b551986 Myron Stowe  2012-01-20  774  	if (!virt_addr)
e615bf5b551986 Myron Stowe  2012-01-20  775  		return AE_BAD_ADDRESS;
e615bf5b551986 Myron Stowe  2012-01-20  776  
d2b7355684cdcf Dan Williams 2020-05-13  777  	status = acpi_os_write_iomem(virt_addr, value, width);
e615bf5b551986 Myron Stowe  2012-01-20  778  
ff99d8c56c8e8d Dan Williams 2020-04-27  779  	acpi_os_rw_unmap(virt_addr, did_fallback);
ff99d8c56c8e8d Dan Williams 2020-04-27  780  	return AE_OK;
e615bf5b551986 Myron Stowe  2012-01-20  781  }
e615bf5b551986 Myron Stowe  2012-01-20  782  

:::::: The code at line 769 was first introduced by commit
:::::: d2b7355684cdcf842a9853915ae1c4927ae9a80a ACPI: Store pre-mapped registers in APEI entries

:::::: TO: Dan Williams <dan.j.williams@intel.com>
:::::: CC: Dan Williams <dan.j.williams@intel.com>

---
0-DAY CI Kernel Test Service, Intel Corporation
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