tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: 65f0d2414b7079556fbbcc070b3d1c9f9587606d commit: f90cf6079bf67988f8b1ad1ade70fc89d0080905 media: vidtv: add a bridge driver date: 4 months ago config: mips-randconfig-r026-20210114 (attached as .config) compiler: clang version 12.0.0 (https://github.com/llvm/llvm-project 68ff52ffead2ba25cca442778ab19286000daad7) reproduce (this is a W=1 build): wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # install mips cross compiling tool for clang build # apt-get install binutils-mips-linux-gnu # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=f90cf6079bf67988f8b1ad1ade70fc89d0080905 git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git git fetch --no-tags linus master git checkout f90cf6079bf67988f8b1ad1ade70fc89d0080905 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=mips If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp@xxxxxxxxx> All warnings (new ones prefixed by >>): ^ arch/mips/include/asm/sync.h:147:34: note: expanded from macro '__SYNC_loongson3_war' # define __SYNC_loongson3_war (1 << 31) ^ In file included from drivers/media/test-drivers/vidtv/vidtv_psi.c:20: In file included from include/linux/slab.h:15: In file included from include/linux/gfp.h:6: In file included from include/linux/mmzone.h:8: In file included from include/linux/spinlock.h:51: In file included from include/linux/preempt.h:78: In file included from ./arch/mips/include/generated/asm/preempt.h:1: In file included from include/asm-generic/preempt.h:5: In file included from include/linux/thread_info.h:38: In file included from arch/mips/include/asm/thread_info.h:16: In file included from arch/mips/include/asm/processor.h:14: In file included from include/linux/atomic.h:7: arch/mips/include/asm/atomic.h:52:1: warning: converting the result of '<<' to a boolean always evaluates to true [-Wtautological-constant-compare] arch/mips/include/asm/atomic.h:45:9: note: expanded from macro 'ATOMIC_OPS' return xchg(&v->counter, n); \ ^ arch/mips/include/asm/cmpxchg.h:102:7: note: expanded from macro 'xchg' if (!__SYNC_loongson3_war) \ ^ arch/mips/include/asm/sync.h:147:34: note: expanded from macro '__SYNC_loongson3_war' # define __SYNC_loongson3_war (1 << 31) ^ In file included from drivers/media/test-drivers/vidtv/vidtv_psi.c:20: In file included from include/linux/slab.h:15: In file included from include/linux/gfp.h:6: In file included from include/linux/mmzone.h:8: In file included from include/linux/spinlock.h:51: In file included from include/linux/preempt.h:78: In file included from ./arch/mips/include/generated/asm/preempt.h:1: In file included from include/asm-generic/preempt.h:5: In file included from include/linux/thread_info.h:38: In file included from arch/mips/include/asm/thread_info.h:16: In file included from arch/mips/include/asm/processor.h:14: In file included from include/linux/atomic.h:7: arch/mips/include/asm/atomic.h:257:1: warning: converting the result of '<<' to a boolean always evaluates to true [-Wtautological-constant-compare] ATOMIC_SIP_OP(atomic, int, subu, ll, sc) ^ arch/mips/include/asm/atomic.h:251:7: note: expanded from macro 'ATOMIC_SIP_OP' if (!__SYNC_loongson3_war) \ ^ arch/mips/include/asm/sync.h:147:34: note: expanded from macro '__SYNC_loongson3_war' # define __SYNC_loongson3_war (1 << 31) ^ In file included from drivers/media/test-drivers/vidtv/vidtv_psi.c:20: In file included from include/linux/slab.h:15: In file included from include/linux/gfp.h:6: In file included from include/linux/mmzone.h:8: In file included from include/linux/spinlock.h:51: In file included from include/linux/preempt.h:78: In file included from ./arch/mips/include/generated/asm/preempt.h:1: In file included from include/asm-generic/preempt.h:5: In file included from include/linux/thread_info.h:38: In file included from arch/mips/include/asm/thread_info.h:16: In file included from arch/mips/include/asm/processor.h:14: In file included from include/linux/atomic.h:7: arch/mips/include/asm/atomic.h:261:1: warning: converting the result of '<<' to a boolean always evaluates to true [-Wtautological-constant-compare] ATOMIC_SIP_OP(atomic64, s64, dsubu, lld, scd) ^ arch/mips/include/asm/atomic.h:251:7: note: expanded from macro 'ATOMIC_SIP_OP' if (!__SYNC_loongson3_war) \ ^ arch/mips/include/asm/sync.h:147:34: note: expanded from macro '__SYNC_loongson3_war' # define __SYNC_loongson3_war (1 << 31) ^ In file included from drivers/media/test-drivers/vidtv/vidtv_psi.c:20: In file included from include/linux/slab.h:15: In file included from include/linux/gfp.h:6: In file included from include/linux/mmzone.h:8: In file included from include/linux/spinlock.h:59: In file included from include/linux/lockdep.h:14: In file included from include/linux/smp.h:15: In file included from include/linux/smp_types.h:5: include/linux/llist.h:222:9: warning: converting the result of '<<' to a boolean always evaluates to true [-Wtautological-constant-compare] return xchg(&head->first, NULL); ^ arch/mips/include/asm/cmpxchg.h:102:7: note: expanded from macro 'xchg' if (!__SYNC_loongson3_war) \ ^ arch/mips/include/asm/sync.h:147:34: note: expanded from macro '__SYNC_loongson3_war' # define __SYNC_loongson3_war (1 << 31) ^ In file included from drivers/media/test-drivers/vidtv/vidtv_psi.c:20: In file included from include/linux/slab.h:15: In file included from include/linux/gfp.h:6: In file included from include/linux/mmzone.h:8: In file included from include/linux/spinlock.h:59: In file included from include/linux/lockdep.h:27: include/linux/debug_locks.h:17:9: warning: converting the result of '<<' to a boolean always evaluates to true [-Wtautological-constant-compare] return xchg(&debug_locks, 0); ^ arch/mips/include/asm/cmpxchg.h:102:7: note: expanded from macro 'xchg' if (!__SYNC_loongson3_war) \ ^ arch/mips/include/asm/sync.h:147:34: note: expanded from macro '__SYNC_loongson3_war' # define __SYNC_loongson3_war (1 << 31) ^ >> drivers/media/test-drivers/vidtv/vidtv_psi.c:667:31: warning: taking address of packed member 'bitfield2' of class or structure 'vidtv_psi_table_pmt' may result in an unaligned pointer value [-Waddress-of-packed-member] vidtv_psi_set_desc_loop_len(&pmt->bitfield2, desc_loop_len, 10); ^~~~~~~~~~~~~~ >> drivers/media/test-drivers/vidtv/vidtv_psi.c:678:32: warning: taking address of packed member 'bitfield2' of class or structure 'vidtv_psi_table_pmt_stream' may result in an unaligned pointer value [-Waddress-of-packed-member] vidtv_psi_set_desc_loop_len(&s->bitfield2, desc_loop_len, 10); ^~~~~~~~~~~~ >> drivers/media/test-drivers/vidtv/vidtv_psi.c:710:32: warning: taking address of packed member 'bitfield' of class or structure 'vidtv_psi_table_sdt_service' may result in an unaligned pointer value [-Waddress-of-packed-member] vidtv_psi_set_desc_loop_len(&s->bitfield, desc_loop_len, 12); ^~~~~~~~~~~ drivers/media/test-drivers/vidtv/vidtv_psi.c:97:19: warning: unused function 'vidtv_psi_sdt_serv_get_desc_loop_len' [-Wunused-function] static inline u16 vidtv_psi_sdt_serv_get_desc_loop_len(struct vidtv_psi_table_sdt_service *s) ^ drivers/media/test-drivers/vidtv/vidtv_psi.c:112:19: warning: unused function 'vidtv_psi_pmt_stream_get_desc_loop_len' [-Wunused-function] static inline u16 vidtv_psi_pmt_stream_get_desc_loop_len(struct vidtv_psi_table_pmt_stream *s) ^ drivers/media/test-drivers/vidtv/vidtv_psi.c:127:19: warning: unused function 'vidtv_psi_pmt_get_desc_loop_len' [-Wunused-function] static inline u16 vidtv_psi_pmt_get_desc_loop_len(struct vidtv_psi_table_pmt *p) ^ 16 warnings generated. -- ^ arch/mips/include/asm/sync.h:147:34: note: expanded from macro '__SYNC_loongson3_war' # define __SYNC_loongson3_war (1 << 31) ^ In file included from drivers/media/test-drivers/vidtv/vidtv_channel.c:24: In file included from include/linux/slab.h:15: In file included from include/linux/gfp.h:6: In file included from include/linux/mmzone.h:8: In file included from include/linux/spinlock.h:51: In file included from include/linux/preempt.h:78: In file included from ./arch/mips/include/generated/asm/preempt.h:1: In file included from include/asm-generic/preempt.h:5: In file included from include/linux/thread_info.h:38: In file included from arch/mips/include/asm/thread_info.h:16: In file included from arch/mips/include/asm/processor.h:14: In file included from include/linux/atomic.h:7: arch/mips/include/asm/atomic.h:52:1: warning: converting the result of '<<' to a boolean always evaluates to true [-Wtautological-constant-compare] arch/mips/include/asm/atomic.h:45:9: note: expanded from macro 'ATOMIC_OPS' return xchg(&v->counter, n); \ ^ arch/mips/include/asm/cmpxchg.h:102:7: note: expanded from macro 'xchg' if (!__SYNC_loongson3_war) \ ^ arch/mips/include/asm/sync.h:147:34: note: expanded from macro '__SYNC_loongson3_war' # define __SYNC_loongson3_war (1 << 31) ^ In file included from drivers/media/test-drivers/vidtv/vidtv_channel.c:24: In file included from include/linux/slab.h:15: In file included from include/linux/gfp.h:6: In file included from include/linux/mmzone.h:8: In file included from include/linux/spinlock.h:51: In file included from include/linux/preempt.h:78: In file included from ./arch/mips/include/generated/asm/preempt.h:1: In file included from include/asm-generic/preempt.h:5: In file included from include/linux/thread_info.h:38: In file included from arch/mips/include/asm/thread_info.h:16: In file included from arch/mips/include/asm/processor.h:14: In file included from include/linux/atomic.h:7: arch/mips/include/asm/atomic.h:257:1: warning: converting the result of '<<' to a boolean always evaluates to true [-Wtautological-constant-compare] ATOMIC_SIP_OP(atomic, int, subu, ll, sc) ^ arch/mips/include/asm/atomic.h:251:7: note: expanded from macro 'ATOMIC_SIP_OP' if (!__SYNC_loongson3_war) \ ^ arch/mips/include/asm/sync.h:147:34: note: expanded from macro '__SYNC_loongson3_war' # define __SYNC_loongson3_war (1 << 31) ^ In file included from drivers/media/test-drivers/vidtv/vidtv_channel.c:24: In file included from include/linux/slab.h:15: In file included from include/linux/gfp.h:6: In file included from include/linux/mmzone.h:8: In file included from include/linux/spinlock.h:51: In file included from include/linux/preempt.h:78: In file included from ./arch/mips/include/generated/asm/preempt.h:1: In file included from include/asm-generic/preempt.h:5: In file included from include/linux/thread_info.h:38: In file included from arch/mips/include/asm/thread_info.h:16: In file included from arch/mips/include/asm/processor.h:14: In file included from include/linux/atomic.h:7: arch/mips/include/asm/atomic.h:261:1: warning: converting the result of '<<' to a boolean always evaluates to true [-Wtautological-constant-compare] ATOMIC_SIP_OP(atomic64, s64, dsubu, lld, scd) ^ arch/mips/include/asm/atomic.h:251:7: note: expanded from macro 'ATOMIC_SIP_OP' if (!__SYNC_loongson3_war) \ ^ arch/mips/include/asm/sync.h:147:34: note: expanded from macro '__SYNC_loongson3_war' # define __SYNC_loongson3_war (1 << 31) ^ In file included from drivers/media/test-drivers/vidtv/vidtv_channel.c:24: In file included from include/linux/slab.h:15: In file included from include/linux/gfp.h:6: In file included from include/linux/mmzone.h:8: In file included from include/linux/spinlock.h:59: In file included from include/linux/lockdep.h:14: In file included from include/linux/smp.h:15: In file included from include/linux/smp_types.h:5: include/linux/llist.h:222:9: warning: converting the result of '<<' to a boolean always evaluates to true [-Wtautological-constant-compare] return xchg(&head->first, NULL); ^ arch/mips/include/asm/cmpxchg.h:102:7: note: expanded from macro 'xchg' if (!__SYNC_loongson3_war) \ ^ arch/mips/include/asm/sync.h:147:34: note: expanded from macro '__SYNC_loongson3_war' # define __SYNC_loongson3_war (1 << 31) ^ In file included from drivers/media/test-drivers/vidtv/vidtv_channel.c:24: In file included from include/linux/slab.h:15: In file included from include/linux/gfp.h:6: In file included from include/linux/mmzone.h:8: In file included from include/linux/spinlock.h:59: In file included from include/linux/lockdep.h:27: include/linux/debug_locks.h:17:9: warning: converting the result of '<<' to a boolean always evaluates to true [-Wtautological-constant-compare] return xchg(&debug_locks, 0); ^ arch/mips/include/asm/cmpxchg.h:102:7: note: expanded from macro 'xchg' if (!__SYNC_loongson3_war) \ ^ arch/mips/include/asm/sync.h:147:34: note: expanded from macro '__SYNC_loongson3_war' # define __SYNC_loongson3_war (1 << 31) ^ >> drivers/media/test-drivers/vidtv/vidtv_channel.c:133:27: warning: taking address of packed member 'descriptor' of class or structure 'vidtv_psi_table_sdt_service' may result in an unaligned pointer value [-Waddress-of-packed-member] vidtv_psi_desc_assign(&tail->descriptor, desc); ^~~~~~~~~~~~~~~~ >> drivers/media/test-drivers/vidtv/vidtv_channel.c:231:29: warning: taking address of packed member 'descriptor' of class or structure 'vidtv_psi_table_pmt_stream' may result in an unaligned pointer value [-Waddress-of-packed-member] vidtv_psi_desc_assign(&tail->descriptor, desc); ^~~~~~~~~~~~~~~~ 12 warnings generated. vim +667 drivers/media/test-drivers/vidtv/vidtv_psi.c 655 656 void vidtv_psi_pmt_table_update_sec_len(struct vidtv_psi_table_pmt *pmt) 657 { 658 /* see ISO/IEC 13818-1 : 2000 p.46 */ 659 u16 length = 0; 660 struct vidtv_psi_table_pmt_stream *s = pmt->stream; 661 u16 desc_loop_len; 662 663 /* from immediately after 'section_length' until 'program_info_length'*/ 664 length += PMT_LEN_UNTIL_PROGRAM_INFO_LENGTH; 665 666 desc_loop_len = vidtv_psi_desc_comp_loop_len(pmt->descriptor); > 667 vidtv_psi_set_desc_loop_len(&pmt->bitfield2, desc_loop_len, 10); 668 669 length += desc_loop_len; 670 671 while (s) { 672 /* skip both pointers at the end */ 673 length += sizeof(struct vidtv_psi_table_pmt_stream) - 674 sizeof(struct vidtv_psi_desc *) - 675 sizeof(struct vidtv_psi_table_pmt_stream *); 676 677 desc_loop_len = vidtv_psi_desc_comp_loop_len(s->descriptor); > 678 vidtv_psi_set_desc_loop_len(&s->bitfield2, desc_loop_len, 10); 679 680 length += desc_loop_len; 681 682 s = s->next; 683 } 684 685 length += CRC_SIZE_IN_BYTES; 686 687 vidtv_psi_set_sec_len(&pmt->header, length); 688 } 689 690 void vidtv_psi_sdt_table_update_sec_len(struct vidtv_psi_table_sdt *sdt) 691 { 692 /* see ETSI EN 300 468 V 1.10.1 p.24 */ 693 u16 length = 0; 694 struct vidtv_psi_table_sdt_service *s = sdt->service; 695 u16 desc_loop_len; 696 697 /* 698 * from immediately after 'section_length' until 699 * 'reserved_for_future_use' 700 */ 701 length += SDT_LEN_UNTIL_RESERVED_FOR_FUTURE_USE; 702 703 while (s) { 704 /* skip both pointers at the end */ 705 length += sizeof(struct vidtv_psi_table_sdt_service) - 706 sizeof(struct vidtv_psi_desc *) - 707 sizeof(struct vidtv_psi_table_sdt_service *); 708 709 desc_loop_len = vidtv_psi_desc_comp_loop_len(s->descriptor); > 710 vidtv_psi_set_desc_loop_len(&s->bitfield, desc_loop_len, 12); 711 712 length += desc_loop_len; 713 714 s = s->next; 715 } 716 717 length += CRC_SIZE_IN_BYTES; 718 719 vidtv_psi_set_sec_len(&sdt->header, length); 720 } 721 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx
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