* [pci:wip/2508-david-aspm-api 1/2] drivers/firewire/ohci.c:745:36: warning: implicit conversion from 'unsigned long' to '__u16' (aka 'unsigned short') changes value from 65536 to 0
@ 2025-08-27 3:59 kernel test robot
0 siblings, 0 replies; only message in thread
From: kernel test robot @ 2025-08-27 3:59 UTC (permalink / raw)
To: David E. Box
Cc: llvm, oe-kbuild-all, linux-pci, Bjorn Helgaas,
Rafael J. Wysocki (Intel)
tree: https://git.kernel.org/pub/scm/linux/kernel/git/pci/pci.git wip/2508-david-aspm-api
head: a373462082599403e030c605ff260fd45429fe66
commit: 5ea26ba40d978b9f34faec2ca92c60e6d9db11c5 [1/2] PCI/ASPM: Add pci_host_set_default_pcie_link_state()
config: arm64-randconfig-003-20250827 (https://download.01.org/0day-ci/archive/20250827/202508271142.h1iibk0C-lkp@intel.com/config)
compiler: clang version 22.0.0git (https://github.com/llvm/llvm-project d26ea02060b1c9db751d188b2edb0059a9eb273d)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250827/202508271142.h1iibk0C-lkp@intel.com/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@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202508271142.h1iibk0C-lkp@intel.com/
All warnings (new ones prefixed by >>):
In file included from include/linux/ftrace.h:23:
In file included from arch/arm64/include/asm/ftrace.h:41:
include/linux/compat.h:454:10: warning: array index 7 is past the end of the array (that has type 'compat_sigset_word[2]' (aka 'unsigned int[2]')) [-Warray-bounds]
454 | case 4: v.sig[7] = (set->sig[3] >> 32); v.sig[6] = set->sig[3];
| ^ ~
include/linux/compat.h:130:2: note: array 'sig' declared here
130 | compat_sigset_word sig[_COMPAT_NSIG_WORDS];
| ^
include/linux/compat.h:454:42: warning: array index 6 is past the end of the array (that has type 'compat_sigset_word[2]' (aka 'unsigned int[2]')) [-Warray-bounds]
454 | case 4: v.sig[7] = (set->sig[3] >> 32); v.sig[6] = set->sig[3];
| ^ ~
include/linux/compat.h:130:2: note: array 'sig' declared here
130 | compat_sigset_word sig[_COMPAT_NSIG_WORDS];
| ^
include/linux/compat.h:454:53: warning: array index 3 is past the end of the array (that has type 'const unsigned long[1]') [-Warray-bounds]
454 | case 4: v.sig[7] = (set->sig[3] >> 32); v.sig[6] = set->sig[3];
| ^ ~
include/uapi/asm-generic/signal.h:62:2: note: array 'sig' declared here
62 | unsigned long sig[_NSIG_WORDS];
| ^
In file included from drivers/firewire/ohci.c:51:
In file included from include/trace/events/firewire_ohci.h:101:
In file included from include/trace/define_trace.h:132:
In file included from include/trace/trace_events.h:21:
In file included from include/linux/trace_events.h:10:
In file included from include/linux/perf_event.h:43:
In file included from include/linux/ftrace.h:23:
In file included from arch/arm64/include/asm/ftrace.h:41:
include/linux/compat.h:456:22: warning: array index 2 is past the end of the array (that has type 'const unsigned long[1]') [-Warray-bounds]
456 | case 3: v.sig[5] = (set->sig[2] >> 32); v.sig[4] = set->sig[2];
| ^ ~
include/uapi/asm-generic/signal.h:62:2: note: array 'sig' declared here
62 | unsigned long sig[_NSIG_WORDS];
| ^
In file included from drivers/firewire/ohci.c:51:
In file included from include/trace/events/firewire_ohci.h:101:
In file included from include/trace/define_trace.h:132:
In file included from include/trace/trace_events.h:21:
In file included from include/linux/trace_events.h:10:
In file included from include/linux/perf_event.h:43:
In file included from include/linux/ftrace.h:23:
In file included from arch/arm64/include/asm/ftrace.h:41:
include/linux/compat.h:456:10: warning: array index 5 is past the end of the array (that has type 'compat_sigset_word[2]' (aka 'unsigned int[2]')) [-Warray-bounds]
456 | case 3: v.sig[5] = (set->sig[2] >> 32); v.sig[4] = set->sig[2];
| ^ ~
include/linux/compat.h:130:2: note: array 'sig' declared here
130 | compat_sigset_word sig[_COMPAT_NSIG_WORDS];
| ^
include/linux/compat.h:456:42: warning: array index 4 is past the end of the array (that has type 'compat_sigset_word[2]' (aka 'unsigned int[2]')) [-Warray-bounds]
456 | case 3: v.sig[5] = (set->sig[2] >> 32); v.sig[4] = set->sig[2];
| ^ ~
include/linux/compat.h:130:2: note: array 'sig' declared here
130 | compat_sigset_word sig[_COMPAT_NSIG_WORDS];
| ^
include/linux/compat.h:456:53: warning: array index 2 is past the end of the array (that has type 'const unsigned long[1]') [-Warray-bounds]
456 | case 3: v.sig[5] = (set->sig[2] >> 32); v.sig[4] = set->sig[2];
| ^ ~
include/uapi/asm-generic/signal.h:62:2: note: array 'sig' declared here
62 | unsigned long sig[_NSIG_WORDS];
| ^
In file included from drivers/firewire/ohci.c:51:
In file included from include/trace/events/firewire_ohci.h:101:
In file included from include/trace/define_trace.h:132:
In file included from include/trace/trace_events.h:21:
In file included from include/linux/trace_events.h:10:
In file included from include/linux/perf_event.h:43:
In file included from include/linux/ftrace.h:23:
In file included from arch/arm64/include/asm/ftrace.h:41:
include/linux/compat.h:458:22: warning: array index 1 is past the end of the array (that has type 'const unsigned long[1]') [-Warray-bounds]
458 | case 2: v.sig[3] = (set->sig[1] >> 32); v.sig[2] = set->sig[1];
| ^ ~
include/uapi/asm-generic/signal.h:62:2: note: array 'sig' declared here
62 | unsigned long sig[_NSIG_WORDS];
| ^
In file included from drivers/firewire/ohci.c:51:
In file included from include/trace/events/firewire_ohci.h:101:
In file included from include/trace/define_trace.h:132:
In file included from include/trace/trace_events.h:21:
In file included from include/linux/trace_events.h:10:
In file included from include/linux/perf_event.h:43:
In file included from include/linux/ftrace.h:23:
In file included from arch/arm64/include/asm/ftrace.h:41:
include/linux/compat.h:458:10: warning: array index 3 is past the end of the array (that has type 'compat_sigset_word[2]' (aka 'unsigned int[2]')) [-Warray-bounds]
458 | case 2: v.sig[3] = (set->sig[1] >> 32); v.sig[2] = set->sig[1];
| ^ ~
include/linux/compat.h:130:2: note: array 'sig' declared here
130 | compat_sigset_word sig[_COMPAT_NSIG_WORDS];
| ^
include/linux/compat.h:458:42: warning: array index 2 is past the end of the array (that has type 'compat_sigset_word[2]' (aka 'unsigned int[2]')) [-Warray-bounds]
458 | case 2: v.sig[3] = (set->sig[1] >> 32); v.sig[2] = set->sig[1];
| ^ ~
include/linux/compat.h:130:2: note: array 'sig' declared here
130 | compat_sigset_word sig[_COMPAT_NSIG_WORDS];
| ^
include/linux/compat.h:458:53: warning: array index 1 is past the end of the array (that has type 'const unsigned long[1]') [-Warray-bounds]
458 | case 2: v.sig[3] = (set->sig[1] >> 32); v.sig[2] = set->sig[1];
| ^ ~
include/uapi/asm-generic/signal.h:62:2: note: array 'sig' declared here
62 | unsigned long sig[_NSIG_WORDS];
| ^
>> drivers/firewire/ohci.c:745:36: warning: implicit conversion from 'unsigned long' to '__u16' (aka 'unsigned short') changes value from 65536 to 0 [-Wconstant-conversion]
745 | d->res_count = cpu_to_le16(PAGE_SIZE);
| ~~~~~~~~~~~~^~~~~~~~~~
include/vdso/page.h:15:30: note: expanded from macro 'PAGE_SIZE'
15 | #define PAGE_SIZE (_AC(1,UL) << CONFIG_PAGE_SHIFT)
| ^
include/uapi/linux/byteorder/big_endian.h:36:53: note: expanded from macro '__cpu_to_le16'
36 | #define __cpu_to_le16(x) ((__force __le16)__swab16((x)))
| ~~~~~~~~~~^~~
include/uapi/linux/swab.h:107:12: note: expanded from macro '__swab16'
107 | __fswab16(x))
| ~~~~~~~~~ ^
drivers/firewire/ohci.c:821:37: warning: implicit conversion from 'unsigned long' to '__u16' (aka 'unsigned short') changes value from 65536 to 0 [-Wconstant-conversion]
821 | if (next_res_count == cpu_to_le16(PAGE_SIZE)) {
| ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~
include/vdso/page.h:15:30: note: expanded from macro 'PAGE_SIZE'
15 | #define PAGE_SIZE (_AC(1,UL) << CONFIG_PAGE_SHIFT)
| ^
include/uapi/linux/byteorder/big_endian.h:36:53: note: expanded from macro '__cpu_to_le16'
36 | #define __cpu_to_le16(x) ((__force __le16)__swab16((x)))
| ~~~~~~~~~~^~~
include/uapi/linux/swab.h:107:12: note: expanded from macro '__swab16'
107 | __fswab16(x))
| ~~~~~~~~~ ^
include/linux/compiler.h:55:47: note: expanded from macro 'if'
55 | #define if(cond, ...) if ( __trace_if_var( !!(cond , ## __VA_ARGS__) ) )
| ~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~
include/linux/compiler.h:57:86: note: expanded from macro '__trace_if_var'
57 | #define __trace_if_var(cond) (__builtin_constant_p(cond) ? (cond) : __trace_if_value(cond))
| ~~~~~~~~~~~~~~~~~^~~~~
include/linux/compiler.h:68:3: note: expanded from macro '__trace_if_value'
68 | (cond) ? \
| ^~~~
drivers/firewire/ohci.c:821:37: warning: implicit conversion from 'unsigned long' to '__u16' (aka 'unsigned short') changes value from 65536 to 0 [-Wconstant-conversion]
821 | if (next_res_count == cpu_to_le16(PAGE_SIZE)) {
| ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~
include/vdso/page.h:15:30: note: expanded from macro 'PAGE_SIZE'
15 | #define PAGE_SIZE (_AC(1,UL) << CONFIG_PAGE_SHIFT)
| ^
include/uapi/linux/byteorder/big_endian.h:36:53: note: expanded from macro '__cpu_to_le16'
36 | #define __cpu_to_le16(x) ((__force __le16)__swab16((x)))
| ~~~~~~~~~~^~~
include/uapi/linux/swab.h:107:12: note: expanded from macro '__swab16'
107 | __fswab16(x))
| ~~~~~~~~~ ^
include/linux/compiler.h:55:47: note: expanded from macro 'if'
55 | #define if(cond, ...) if ( __trace_if_var( !!(cond , ## __VA_ARGS__) ) )
| ~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~
include/linux/compiler.h:57:52: note: expanded from macro '__trace_if_var'
57 | #define __trace_if_var(cond) (__builtin_constant_p(cond) ? (cond) : __trace_if_value(cond))
| ^~~~
drivers/firewire/ohci.c:821:37: warning: implicit conversion from 'unsigned long' to '__u16' (aka 'unsigned short') changes value from 65536 to 0 [-Wconstant-conversion]
821 | if (next_res_count == cpu_to_le16(PAGE_SIZE)) {
| ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~
include/vdso/page.h:15:30: note: expanded from macro 'PAGE_SIZE'
15 | #define PAGE_SIZE (_AC(1,UL) << CONFIG_PAGE_SHIFT)
| ^
include/uapi/linux/byteorder/big_endian.h:36:53: note: expanded from macro '__cpu_to_le16'
36 | #define __cpu_to_le16(x) ((__force __le16)__swab16((x)))
| ~~~~~~~~~~^~~
include/uapi/linux/swab.h:107:12: note: expanded from macro '__swab16'
107 | __fswab16(x))
| ~~~~~~~~~ ^
include/linux/compiler.h:55:47: note: expanded from macro 'if'
55 | #define if(cond, ...) if ( __trace_if_var( !!(cond , ## __VA_ARGS__) ) )
| ~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~
include/linux/compiler.h:57:61: note: expanded from macro '__trace_if_var'
57 | #define __trace_if_var(cond) (__builtin_constant_p(cond) ? (cond) : __trace_if_value(cond))
| ^~~~
drivers/firewire/ohci.c:833:39: warning: implicit conversion from 'unsigned long' to '__u16' (aka 'unsigned short') changes value from 65536 to 0 [-Wconstant-conversion]
833 | if (next_res_count != cpu_to_le16(PAGE_SIZE))
| ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~
include/vdso/page.h:15:30: note: expanded from macro 'PAGE_SIZE'
15 | #define PAGE_SIZE (_AC(1,UL) << CONFIG_PAGE_SHIFT)
| ^
include/uapi/linux/byteorder/big_endian.h:36:53: note: expanded from macro '__cpu_to_le16'
36 | #define __cpu_to_le16(x) ((__force __le16)__swab16((x)))
| ~~~~~~~~~~^~~
include/uapi/linux/swab.h:107:12: note: expanded from macro '__swab16'
107 | __fswab16(x))
| ~~~~~~~~~ ^
include/linux/compiler.h:55:47: note: expanded from macro 'if'
55 | #define if(cond, ...) if ( __trace_if_var( !!(cond , ## __VA_ARGS__) ) )
| ~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~
include/linux/compiler.h:57:86: note: expanded from macro '__trace_if_var'
57 | #define __trace_if_var(cond) (__builtin_constant_p(cond) ? (cond) : __trace_if_value(cond))
| ~~~~~~~~~~~~~~~~~^~~~~
include/linux/compiler.h:68:3: note: expanded from macro '__trace_if_value'
68 | (cond) ? \
| ^~~~
drivers/firewire/ohci.c:833:39: warning: implicit conversion from 'unsigned long' to '__u16' (aka 'unsigned short') changes value from 65536 to 0 [-Wconstant-conversion]
833 | if (next_res_count != cpu_to_le16(PAGE_SIZE))
| ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~
include/vdso/page.h:15:30: note: expanded from macro 'PAGE_SIZE'
15 | #define PAGE_SIZE (_AC(1,UL) << CONFIG_PAGE_SHIFT)
| ^
include/uapi/linux/byteorder/big_endian.h:36:53: note: expanded from macro '__cpu_to_le16'
36 | #define __cpu_to_le16(x) ((__force __le16)__swab16((x)))
| ~~~~~~~~~~^~~
include/uapi/linux/swab.h:107:12: note: expanded from macro '__swab16'
107 | __fswab16(x))
vim +745 drivers/firewire/ohci.c
32b46093a07698 drivers/firewire/fw-ohci.c Kristian Høgsberg 2007-02-06 738
7a39d8b8216546 drivers/firewire/ohci.c Clemens Ladisch 2010-11-26 739 static void ar_context_link_page(struct ar_context *ctx, unsigned int index)
7a39d8b8216546 drivers/firewire/ohci.c Clemens Ladisch 2010-11-26 740 {
7a39d8b8216546 drivers/firewire/ohci.c Clemens Ladisch 2010-11-26 741 struct descriptor *d;
7a39d8b8216546 drivers/firewire/ohci.c Clemens Ladisch 2010-11-26 742
7a39d8b8216546 drivers/firewire/ohci.c Clemens Ladisch 2010-11-26 743 d = &ctx->descriptors[index];
7a39d8b8216546 drivers/firewire/ohci.c Clemens Ladisch 2010-11-26 744 d->branch_address &= cpu_to_le32(~0xf);
7a39d8b8216546 drivers/firewire/ohci.c Clemens Ladisch 2010-11-26 @745 d->res_count = cpu_to_le16(PAGE_SIZE);
7a39d8b8216546 drivers/firewire/ohci.c Clemens Ladisch 2010-11-26 746 d->transfer_status = 0;
32b46093a07698 drivers/firewire/fw-ohci.c Kristian Høgsberg 2007-02-06 747
071595ebdc66d7 drivers/firewire/ohci.c Stefan Richter 2010-07-27 748 wmb(); /* finish init of new descriptors before branch_address update */
7a39d8b8216546 drivers/firewire/ohci.c Clemens Ladisch 2010-11-26 749 d = &ctx->descriptors[ctx->last_buffer_index];
7a39d8b8216546 drivers/firewire/ohci.c Clemens Ladisch 2010-11-26 750 d->branch_address |= cpu_to_le32(1);
7a39d8b8216546 drivers/firewire/ohci.c Clemens Ladisch 2010-11-26 751
7a39d8b8216546 drivers/firewire/ohci.c Clemens Ladisch 2010-11-26 752 ctx->last_buffer_index = index;
32b46093a07698 drivers/firewire/fw-ohci.c Kristian Høgsberg 2007-02-06 753
a77754a75d58d5 drivers/firewire/fw-ohci.c Kristian Høgsberg 2007-05-07 754 reg_write(ctx->ohci, CONTROL_SET(ctx->regs), CONTEXT_WAKE);
837596a61ba8f9 drivers/firewire/ohci.c Clemens Ladisch 2010-10-25 755 }
837596a61ba8f9 drivers/firewire/ohci.c Clemens Ladisch 2010-10-25 756
:::::: The code at line 745 was first introduced by commit
:::::: 7a39d8b82165462729d09066bddb395a19025acd firewire: ohci: Asynchronous Reception rewrite
:::::: TO: Clemens Ladisch <clemens@ladisch.de>
:::::: CC: Stefan Richter <stefanr@s5r6.in-berlin.de>
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
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