[kbuild-all] [intel-tdx:guest 129/144] kernel/dma/swiotlb.c:389:15-33: WARNING: casting value returned by memory allocation function to (struct io_tlb_area *) is useless.

tree: https://github.com/intel/tdx.git guest head: 41fe88a1b3c28543f49fa6ed9e0e9b6650ed7614 commit: 4529b5784c141782c72ec9bd9a92df2b68cb7d45 [129/144] swiotlb: Split up single swiotlb lock config: x86_64-randconfig-c002-20211118 (attached as .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(a)intel.com&gt; cocci warnings: (new ones prefixed by >>) 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