linux-kernel - [intel-tdx:guest-rebased 120/129] drivers/acpi/svkl.c:164 acpi_svkl_init() warn: '&acpi_svkl

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Date:   Wed, 16 Mar 2022 18:30:35 +0300
From:   Dan Carpenter <dan.carpenter@...cle.com>
To:     kbuild@...ts.01.org,
        Kuppuswamy Sathyanarayanan 
        <sathyanarayanan.kuppuswamy@...ux.intel.com>
Cc:     lkp@...el.com, kbuild-all@...ts.01.org,
        linux-kernel@...r.kernel.org,
        "Kirill A. Shutemov" <kirill.shutemov@...ux.intel.com>
Subject: [intel-tdx:guest-rebased 120/129] drivers/acpi/svkl.c:164
 acpi_svkl_init() warn: '&acpi_svkl_dev' not released on lines: 157.

tree:   https://github.com/intel/tdx.git guest-rebased
head:   6d6cab7288e23cfe0084bd1c214e3649146eb159
commit: 370c68664d53ff13dbd36847e140df02364387a5 [120/129] ACPI: Add SVKL table support
config: x86_64-randconfig-m001-20220314 (https://download.01.org/0day-ci/archive/20220316/202203162327.0MHKaQED-lkp@intel.com/config)
compiler: gcc-9 (Ubuntu 9.4.0-1ubuntu1~20.04) 9.4.0

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@...el.com>
Reported-by: Dan Carpenter <dan.carpenter@...cle.com>

smatch warnings:
drivers/acpi/svkl.c:164 acpi_svkl_init() warn: '&acpi_svkl_dev' not released on lines: 157.

vim +164 drivers/acpi/svkl.c

370c68664d53ff Kuppuswamy Sathyanarayanan 2020-06-19  140  static int __init acpi_svkl_init(void)
370c68664d53ff Kuppuswamy Sathyanarayanan 2020-06-19  141  {
370c68664d53ff Kuppuswamy Sathyanarayanan 2020-06-19  142  	acpi_status status = AE_OK;
370c68664d53ff Kuppuswamy Sathyanarayanan 2020-06-19  143  	int ret;
370c68664d53ff Kuppuswamy Sathyanarayanan 2020-06-19  144  
370c68664d53ff Kuppuswamy Sathyanarayanan 2020-06-19  145  	ret = misc_register(&acpi_svkl_dev);
370c68664d53ff Kuppuswamy Sathyanarayanan 2020-06-19  146  	if (ret) {
370c68664d53ff Kuppuswamy Sathyanarayanan 2020-06-19  147  		pr_err("SVKL: can't misc_register on minor=%d\n",
370c68664d53ff Kuppuswamy Sathyanarayanan 2020-06-19  148  		       MISC_DYNAMIC_MINOR);
370c68664d53ff Kuppuswamy Sathyanarayanan 2020-06-19  149  		return ret;
370c68664d53ff Kuppuswamy Sathyanarayanan 2020-06-19  150  	}
370c68664d53ff Kuppuswamy Sathyanarayanan 2020-06-19  151  
370c68664d53ff Kuppuswamy Sathyanarayanan 2020-06-19  152  	mutex_init(&svkl_lock);
370c68664d53ff Kuppuswamy Sathyanarayanan 2020-06-19  153  
370c68664d53ff Kuppuswamy Sathyanarayanan 2020-06-19  154  	status = acpi_get_table(ACPI_SIG_SVKL, 0, &svkl_tbl_hdr);
370c68664d53ff Kuppuswamy Sathyanarayanan 2020-06-19  155  	if (ACPI_FAILURE(status) || !svkl_tbl_hdr) {
370c68664d53ff Kuppuswamy Sathyanarayanan 2020-06-19  156  		pr_err("get table failed\n");

misc_unregister()?

370c68664d53ff Kuppuswamy Sathyanarayanan 2020-06-19  157  		return -ENODEV;
370c68664d53ff Kuppuswamy Sathyanarayanan 2020-06-19  158  	}
370c68664d53ff Kuppuswamy Sathyanarayanan 2020-06-19  159  
370c68664d53ff Kuppuswamy Sathyanarayanan 2020-06-19  160  	dump_svkl_header();
370c68664d53ff Kuppuswamy Sathyanarayanan 2020-06-19  161  
370c68664d53ff Kuppuswamy Sathyanarayanan 2020-06-19  162  	pr_info("ACPI: SVKL module loaded\n");
370c68664d53ff Kuppuswamy Sathyanarayanan 2020-06-19  163  
370c68664d53ff Kuppuswamy Sathyanarayanan 2020-06-19 @164  	return 0;
370c68664d53ff Kuppuswamy Sathyanarayanan 2020-06-19  165  }

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