* [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.
@ 2021-11-20 8:33 kernel test robot
2021-11-20 8:33 ` [PATCH] swiotlb: fix alloc_cast.cocci warnings kernel test robot
0 siblings, 1 reply; 2+ messages in thread
From: kernel test robot @ 2021-11-20 8:33 UTC (permalink / raw)
To: Andi Kleen; +Cc: kbuild-all, linux-kernel, Kuppuswamy Sathyanarayanan
[-- Attachment #1: Type: text/plain, Size: 751 bytes --]
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@intel.com>
cocci warnings: (new ones prefixed by >>)
>> kernel/dma/swiotlb.c:389:15-33: 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
[-- Attachment #2: .config.gz --]
[-- Type: application/gzip, Size: 34513 bytes --]
^ permalink raw reply [flat|nested] 2+ messages in thread* [PATCH] swiotlb: fix alloc_cast.cocci warnings 2021-11-20 8:33 [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 kernel test robot @ 2021-11-20 8:33 ` kernel test robot 0 siblings, 0 replies; 2+ messages in thread From: kernel test robot @ 2021-11-20 8:33 UTC (permalink / raw) To: Andi Kleen; +Cc: kbuild-all, linux-kernel, Kuppuswamy Sathyanarayanan From: kernel test robot <lkp@intel.com> kernel/dma/swiotlb.c:389:15-33: WARNING: casting value returned by memory allocation function to (struct io_tlb_area *) is useless. Remove casting the values returned by memory allocation functions like kmalloc, kzalloc, kmem_cache_alloc, kmem_cache_zalloc etc. Semantic patch information: This makes an effort to find cases of casting of values returned by kmalloc, kzalloc, kcalloc, kmem_cache_alloc, kmem_cache_zalloc, kmem_cache_alloc_node, kmalloc_node and kzalloc_node and removes the casting as it is not required. The result in the patch case may need some reformatting. Generated by: scripts/coccinelle/api/alloc/alloc_cast.cocci Fixes: 4529b5784c14 ("swiotlb: Split up single swiotlb lock") CC: Andi Kleen <ak@linux.intel.com> Reported-by: kernel test robot <lkp@intel.com> Signed-off-by: kernel test robot <lkp@intel.com> --- tree: https://github.com/intel/tdx.git guest head: 41fe88a1b3c28543f49fa6ed9e0e9b6650ed7614 commit: 4529b5784c141782c72ec9bd9a92df2b68cb7d45 [129/144] swiotlb: Split up single swiotlb lock :::::: branch date: 9 days ago :::::: commit date: 9 days ago swiotlb.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/kernel/dma/swiotlb.c +++ b/kernel/dma/swiotlb.c @@ -386,7 +386,7 @@ swiotlb_late_init_with_tbl(char *tlb, un return -ENOMEM; } - mem->areas = (struct io_tlb_area *)kcalloc(num_areas, + mem->areas = kcalloc(num_areas, sizeof(struct io_tlb_area), GFP_KERNEL); if (!mem->areas) { ^ permalink raw reply [flat|nested] 2+ messages in thread
end of thread, other threads:[~2021-11-20 8:34 UTC | newest] Thread overview: 2+ messages (download: mbox.gz / follow: Atom feed) -- links below jump to the message on this page -- 2021-11-20 8:33 [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 kernel test robot 2021-11-20 8:33 ` [PATCH] swiotlb: fix alloc_cast.cocci warnings kernel test robot
This is a public inbox, see mirroring instructions for how to clone and mirror all data and code used for this inbox; as well as URLs for NNTP newsgroup(s).