linux-kernel - [intel-tdx:guest-rebased 115/133] kernel/dma/swiotlb.c:433:15-33: WARNING: casting value returned by memory allocation function to (struct io_tlb

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Date:   Wed, 16 Feb 2022 12:19:44 +0800
From:   kernel test robot <lkp@...el.com>
To:     Andi Kleen <ak@...ux.intel.com>
Cc:     kbuild-all@...ts.01.org, linux-kernel@...r.kernel.org,
        "Kirill A. Shutemov" <kirill.shutemov@...ux.intel.com>
Subject: [intel-tdx:guest-rebased 115/133] kernel/dma/swiotlb.c:433:15-33:
 WARNING: casting value returned by memory allocation function to (struct
 io_tlb_area *) is useless.

tree:   https://github.com/intel/tdx.git guest-rebased
head:   36c91f6d572820e8556972fd7644bd96798e85d6
commit: 77d5cb1c6d4fe32593d65a38b4732da6c90b8f29 [115/133] swiotlb: Split up single swiotlb lock
config: x86_64-randconfig-c002-20220214 (https://download.01.org/0day-ci/archive/20220216/202202161256.1zrqppDy-lkp@intel.com/config)
compiler: gcc-9 (Debian 9.3.0-22) 9.3.0

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


cocci warnings: (new ones prefixed by >>)
>> kernel/dma/swiotlb.c:433:15-33: WARNING: casting value returned by memory allocation function to (struct io_tlb_area *) is useless.

Please review and possibly fold the followup patch.

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org