Hi Cristian, kernel test robot noticed the following build warnings: [auto build test WARNING on robh/for-next] [also build test WARNING on soc/for-next linus/master v6.9-rc4 next-20240415] [If your patch is applied to the wrong git tree, kindly drop us a note. And when submitting patch, we suggest to use '--base' as documented in https://git-scm.com/docs/git-format-patch#_base_tree_information] url: https://github.com/intel-lab-lkp/linux/commits/Cristian-Marussi/dt-bindings-mailbox-arm-mhuv3-Add-bindings/20240415-094106 base: https://git.kernel.org/pub/scm/linux/kernel/git/robh/linux.git for-next patch link: https://lore.kernel.org/r/20240412192801.554464-3-cristian.marussi%40arm.com patch subject: [PATCH v4 2/2] mailbox: arm_mhuv3: Add driver config: hexagon-allyesconfig (https://download.01.org/0day-ci/archive/20240415/202404152338.axJTOvpQ-lkp@xxxxxxxxx/config) compiler: clang version 19.0.0git (https://github.com/llvm/llvm-project 8b3b4a92adee40483c27f26c478a384cd69c6f05) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240415/202404152338.axJTOvpQ-lkp@xxxxxxxxx/reproduce) If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot <lkp@xxxxxxxxx> | Closes: https://lore.kernel.org/oe-kbuild-all/202404152338.axJTOvpQ-lkp@xxxxxxxxx/ All warnings (new ones prefixed by >>): In file included from drivers/mailbox/arm_mhuv3.c:15: In file included from include/linux/interrupt.h:11: In file included from include/linux/hardirq.h:11: In file included from ./arch/hexagon/include/generated/asm/hardirq.h:1: In file included from include/asm-generic/hardirq.h:17: In file included from include/linux/irq.h:20: In file included from include/linux/io.h:13: In file included from arch/hexagon/include/asm/io.h:328: include/asm-generic/io.h:547:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] 547 | val = __raw_readb(PCI_IOBASE + addr); | ~~~~~~~~~~ ^ include/asm-generic/io.h:560:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] 560 | val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr)); | ~~~~~~~~~~ ^ include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu' 37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x)) | ^ In file included from drivers/mailbox/arm_mhuv3.c:15: In file included from include/linux/interrupt.h:11: In file included from include/linux/hardirq.h:11: In file included from ./arch/hexagon/include/generated/asm/hardirq.h:1: In file included from include/asm-generic/hardirq.h:17: In file included from include/linux/irq.h:20: In file included from include/linux/io.h:13: In file included from arch/hexagon/include/asm/io.h:328: include/asm-generic/io.h:573:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] 573 | val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr)); | ~~~~~~~~~~ ^ include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu' 35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x)) | ^ In file included from drivers/mailbox/arm_mhuv3.c:15: In file included from include/linux/interrupt.h:11: In file included from include/linux/hardirq.h:11: In file included from ./arch/hexagon/include/generated/asm/hardirq.h:1: In file included from include/asm-generic/hardirq.h:17: In file included from include/linux/irq.h:20: In file included from include/linux/io.h:13: In file included from arch/hexagon/include/asm/io.h:328: include/asm-generic/io.h:584:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] 584 | __raw_writeb(value, PCI_IOBASE + addr); | ~~~~~~~~~~ ^ include/asm-generic/io.h:594:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] 594 | __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr); | ~~~~~~~~~~ ^ include/asm-generic/io.h:604:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] 604 | __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr); | ~~~~~~~~~~ ^ >> drivers/mailbox/arm_mhuv3.c:374:2: warning: result of comparison of constant 18446744073709551615 with expression of type 'typeof (_Generic((_bmask), char: (unsigned char)0, unsigned char: (unsigned char)0, signed char: (unsigned char)0, unsigned short: (unsigned short)0, short: (unsigned short)0, unsigned int: (unsigned int)0, int: (unsigned int)0, unsigned long: (unsigned long)0, long: (unsigned long)0, unsigned long long: (unsigned long long)0, long long: (unsigned long long)0, default: (_bmask)))' (aka 'unsigned long') is always false [-Wtautological-constant-out-of-range-compare] 374 | writel_relaxed_bitmask(0x1, &mhu->pbx->dbcw[priv->ch_idx].int_en, tfr_ack); | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ drivers/mailbox/arm_mhuv3.c:219:12: note: expanded from macro 'writel_relaxed_bitmask' 219 | _rval |= FIELD_PREP(_bmask, _value); \ | ^~~~~~~~~~~~~~~~~~~~~~~~~~ include/linux/bitfield.h:115:3: note: expanded from macro 'FIELD_PREP' 115 | __BF_FIELD_CHECK(_mask, 0ULL, _val, "FIELD_PREP: "); \ | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ include/linux/bitfield.h:72:53: note: expanded from macro '__BF_FIELD_CHECK' 72 | BUILD_BUG_ON_MSG(__bf_cast_unsigned(_mask, _mask) > \ | ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~ 73 | __bf_cast_unsigned(_reg, ~0ull), \ | ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 74 | _pfx "type of reg too small for mask"); \ | ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ note: (skipping 1 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all) include/linux/compiler_types.h:449:22: note: expanded from macro 'compiletime_assert' 449 | _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__) | ~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ include/linux/compiler_types.h:437:23: note: expanded from macro '_compiletime_assert' 437 | __compiletime_assert(condition, msg, prefix, suffix) | ~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ include/linux/compiler_types.h:429:9: note: expanded from macro '__compiletime_assert' 429 | if (!(condition)) \ | ^~~~~~~~~ drivers/mailbox/arm_mhuv3.c:384:2: warning: result of comparison of constant 18446744073709551615 with expression of type 'typeof (_Generic((_bmask), char: (unsigned char)0, unsigned char: (unsigned char)0, signed char: (unsigned char)0, unsigned short: (unsigned short)0, short: (unsigned short)0, unsigned int: (unsigned int)0, int: (unsigned int)0, unsigned long: (unsigned long)0, long: (unsigned long)0, unsigned long long: (unsigned long long)0, long long: (unsigned long long)0, default: (_bmask)))' (aka 'unsigned long') is always false [-Wtautological-constant-out-of-range-compare] 384 | writel_relaxed_bitmask(0x0, &mhu->pbx->dbcw[priv->ch_idx].int_en, tfr_ack); | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ drivers/mailbox/arm_mhuv3.c:219:12: note: expanded from macro 'writel_relaxed_bitmask' 219 | _rval |= FIELD_PREP(_bmask, _value); \ | ^~~~~~~~~~~~~~~~~~~~~~~~~~ include/linux/bitfield.h:115:3: note: expanded from macro 'FIELD_PREP' 115 | __BF_FIELD_CHECK(_mask, 0ULL, _val, "FIELD_PREP: "); \ | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ include/linux/bitfield.h:72:53: note: expanded from macro '__BF_FIELD_CHECK' 72 | BUILD_BUG_ON_MSG(__bf_cast_unsigned(_mask, _mask) > \ | ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~ 73 | __bf_cast_unsigned(_reg, ~0ull), \ | ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 74 | _pfx "type of reg too small for mask"); \ | ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ note: (skipping 1 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all) include/linux/compiler_types.h:449:22: note: expanded from macro 'compiletime_assert' 449 | _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__) | ~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ include/linux/compiler_types.h:437:23: note: expanded from macro '_compiletime_assert' 437 | __compiletime_assert(condition, msg, prefix, suffix) | ~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ include/linux/compiler_types.h:429:9: note: expanded from macro '__compiletime_assert' 429 | if (!(condition)) \ | ^~~~~~~~~ drivers/mailbox/arm_mhuv3.c:387:2: warning: result of comparison of constant 18446744073709551615 with expression of type 'typeof (_Generic((_bmask), char: (unsigned char)0, unsigned char: (unsigned char)0, signed char: (unsigned char)0, unsigned short: (unsigned short)0, short: (unsigned short)0, unsigned int: (unsigned int)0, int: (unsigned int)0, unsigned long: (unsigned long)0, long: (unsigned long)0, unsigned long long: (unsigned long long)0, long long: (unsigned long long)0, default: (_bmask)))' (aka 'unsigned long') is always false [-Wtautological-constant-out-of-range-compare] 387 | writel_relaxed_bitmask(0x1, &mhu->pbx->dbcw[priv->ch_idx].int_clr, tfr_ack); | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ drivers/mailbox/arm_mhuv3.c:219:12: note: expanded from macro 'writel_relaxed_bitmask' 219 | _rval |= FIELD_PREP(_bmask, _value); \ | ^~~~~~~~~~~~~~~~~~~~~~~~~~ include/linux/bitfield.h:115:3: note: expanded from macro 'FIELD_PREP' 115 | __BF_FIELD_CHECK(_mask, 0ULL, _val, "FIELD_PREP: "); \ | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ include/linux/bitfield.h:72:53: note: expanded from macro '__BF_FIELD_CHECK' 72 | BUILD_BUG_ON_MSG(__bf_cast_unsigned(_mask, _mask) > \ | ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~ 73 | __bf_cast_unsigned(_reg, ~0ull), \ | ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 74 | _pfx "type of reg too small for mask"); \ | ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ note: (skipping 1 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all) include/linux/compiler_types.h:449:22: note: expanded from macro 'compiletime_assert' 449 | _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__) | ~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ include/linux/compiler_types.h:437:23: note: expanded from macro '_compiletime_assert' 437 | __compiletime_assert(condition, msg, prefix, suffix) | ~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ include/linux/compiler_types.h:429:9: note: expanded from macro '__compiletime_assert' 429 | if (!(condition)) \ | ^~~~~~~~~ drivers/mailbox/arm_mhuv3.c:579:4: warning: result of comparison of constant 18446744073709551615 with expression of type 'typeof (_Generic((_bmask), char: (unsigned char)0, unsigned char: (unsigned char)0, signed char: (unsigned char)0, unsigned short: (unsigned short)0, short: (unsigned short)0, unsigned int: (unsigned int)0, int: (unsigned int)0, unsigned long: (unsigned long)0, long: (unsigned long)0, unsigned long long: (unsigned long long)0, long long: (unsigned long long)0, default: (_bmask)))' (aka 'unsigned long') is always false [-Wtautological-constant-out-of-range-compare] 579 | writel_relaxed_bitmask(0x1, &dbcw[i].int_clr, tfr_ack); | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ drivers/mailbox/arm_mhuv3.c:219:12: note: expanded from macro 'writel_relaxed_bitmask' 219 | _rval |= FIELD_PREP(_bmask, _value); \ | ^~~~~~~~~~~~~~~~~~~~~~~~~~ include/linux/bitfield.h:115:3: note: expanded from macro 'FIELD_PREP' 115 | __BF_FIELD_CHECK(_mask, 0ULL, _val, "FIELD_PREP: "); \ | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ include/linux/bitfield.h:72:53: note: expanded from macro '__BF_FIELD_CHECK' 72 | BUILD_BUG_ON_MSG(__bf_cast_unsigned(_mask, _mask) > \ | ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~ 73 | __bf_cast_unsigned(_reg, ~0ull), \ | ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 74 | _pfx "type of reg too small for mask"); \ | ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ note: (skipping 1 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all) include/linux/compiler_types.h:449:22: note: expanded from macro 'compiletime_assert' 449 | _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__) | ~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ include/linux/compiler_types.h:437:23: note: expanded from macro '_compiletime_assert' 437 | __compiletime_assert(condition, msg, prefix, suffix) | ~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ vim +374 drivers/mailbox/arm_mhuv3.c 368 369 static void mhuv3_doorbell_tx_startup(struct mhuv3 *mhu, struct mbox_chan *chan) 370 { 371 struct mhuv3_mbox_chan_priv *priv = chan->con_priv; 372 373 /* Enable Transfer Acknowledgment events */ > 374 writel_relaxed_bitmask(0x1, &mhu->pbx->dbcw[priv->ch_idx].int_en, tfr_ack); 375 } 376 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
