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Nathan Chancellor 23de80469a lib/mpi: Eliminate unused umul_ppmm definitions for MIPS 
commit b0c091ae04 upstream.

Clang errors out when building this macro:

lib/mpi/generic_mpih-mul1.c:37:24: error: invalid use of a cast in a
inline asm context requiring an l-value: remove the cast or build with
-fheinous-gnu-extensions
                umul_ppmm(prod_high, prod_low, s1_ptr[j], s2_limb);
                ~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
lib/mpi/longlong.h:652:20: note: expanded from macro 'umul_ppmm'
        : "=l" ((USItype)(w0)), \
                ~~~~~~~~~~^~~
lib/mpi/generic_mpih-mul1.c:37:3: error: invalid output constraint '=h'
in asm
                umul_ppmm(prod_high, prod_low, s1_ptr[j], s2_limb);
                ^
lib/mpi/longlong.h:653:7: note: expanded from macro 'umul_ppmm'
             "=h" ((USItype)(w1)) \
             ^
2 errors generated.

The C version that is used for GCC 4.4 and up works well with clang;
however, it is not currently being used because Clang masks itself
as GCC 4.2.1 for compatibility reasons. As Nick points out, we require
GCC 4.6 and newer in the kernel so we can eliminate all of the
versioning checks and just use the C version of umul_ppmm for all
supported compilers.

Link: https://github.com/ClangBuiltLinux/linux/issues/605
Suggested-by: Nick Desaulniers <ndesaulniers@google.com>
Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>
Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2023-08-30 16:35:07 +02:00
..
842 License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
crypto lib/crypto: blake2s: move hmac construction into wireguard 2022-06-25 11:46:27 +02:00
fonts Fonts: Replace discarded const qualifier 2020-11-10 10:29:03 +01:00
lz4 lib/lz4: make arrays static const, reduces object code size 2017-10-03 17:54:25 -07:00
lzo License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
mpi lib/mpi: Eliminate unused umul_ppmm definitions for MIPS 2023-08-30 16:35:07 +02:00
raid6 lib/raid6/test: fix multiple definition linking error 2022-04-20 09:08:12 +02:00
reed_solomon rslib: Fix handling of of caller provided syndrome 2019-07-31 07:28:30 +02:00
xz lib/xz: Validate the value before assigning it to an enum variable 2021-11-26 11:40:28 +01:00
zlib_deflate
zlib_inflate lib/zlib: remove outdated and incorrect pre-increment optimization 2020-06-25 15:41:57 +02:00
zstd lib: Add zstd modules 2017-08-15 09:02:08 -07:00
.gitignore
argv_split.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
asn1_decoder.c ASN.1: check for error from ASN1_OP_END__ACT actions 2017-12-14 09:52:52 +01:00
assoc_array.c assoc_array: Fix BUG_ON during garbage collect 2022-06-06 08:20:56 +02:00
atomic64.c
atomic64_test.c lib/atomic64_test.c: add a test that atomic64_inc_not_zero() returns an int 2017-07-14 15:05:13 -07:00
audit.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
bcd.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
bch.c
bitmap.c bitmap: Add bitmap_alloc(), bitmap_zalloc() and bitmap_free() 2020-01-29 15:02:39 +01:00
bitrev.c
bsearch.c kprobes: Prohibit probing on bsearch() 2019-04-05 22:31:33 +02:00
btree.c
bug.c bug: Remove redundant condition check in report_bug 2021-05-22 10:57:32 +02:00
build_OID_registry
bust_spinlocks.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
chacha20.c crypto: chacha20 - Fix chacha20_block() keystream alignment (again) 2022-06-25 11:46:31 +02:00
check_signature.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
checksum.c
clz_ctz.c
clz_tab.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
cmdline.c lib/cmdline.c: remove meaningless comment 2017-09-08 18:26:49 -07:00
compat_audit.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
cordic.c
cpu_rmap.c lib: cpu_rmap: Fix potential use-after-free in irq_cpu_rmap_release() 2023-06-14 10:35:25 +02:00
cpumask.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
crc-ccitt.c
crc-itu-t.c
crc-t10dif.c
crc4.c lib: Add crc4 module 2017-06-09 11:52:07 +02:00
crc7.c
crc8.c
crc16.c
crc32.c lib/crc32.c: fix trivial typo in preprocessor condition 2020-10-29 09:07:10 +01:00
crc32defs.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
crc32test.c lib/crc32test: remove extra local_irq_disable/enable 2020-11-10 10:29:04 +01:00
ctype.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
debug_info.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
debug_locks.c locking/lockdep: Fix debug_locks off performance problem 2018-11-13 11:14:51 -08:00
debugobjects.c debugobjects: Recheck debug_objects_enabled before reporting 2023-08-11 11:33:47 +02:00
dec_and_lock.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
decompress.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
decompress_bunzip2.c
decompress_inflate.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
decompress_unlz4.c lib/decompress_unlz4.c: correctly handle zero-padding around initrds. 2021-07-20 16:17:51 +02:00
decompress_unlzma.c
decompress_unlzo.c
decompress_unxz.c lib/xz: Avoid overlapping memcpy() with invalid input with in-place decompression 2021-11-26 11:40:28 +01:00
devres.c devres: allow const resource arguments 2020-01-27 14:46:39 +01:00
digsig.c lib/digsig: fix dereference of NULL user_key_payload 2017-10-12 17:16:40 +01:00
div64.c lib/div64.c: off by one in shift 2019-04-20 09:15:07 +02:00
dma-debug.c dma-debug: change allocation mode from GFP_NOWAIT to GFP_ATIOMIC 2022-06-14 16:53:45 +02:00
dma-noop.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
dma-virt.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
dump_stack.c dump_stack: avoid the livelock of the dump_lock 2019-11-12 19:18:01 +01:00
dynamic_debug.c lib/dynamic_debug.c: use address-of operator on section symbols 2023-06-09 10:22:53 +02:00
dynamic_queue_limits.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
earlycpio.c
errseq.c errseq: Always report a writeback error once 2018-05-09 09:51:54 +02:00
extable.c lib/extable.c: use bsearch() library function in search_extable() 2017-07-10 16:32:35 -07:00
fault-inject.c fault-inject: fix wrong should_fail() decision in task context 2017-08-10 15:54:06 -07:00
fdt.c
fdt_empty_tree.c
fdt_ro.c
fdt_rw.c
fdt_strerror.c
fdt_sw.c
fdt_wip.c
find_bit.c uapi: rename ext2_swab() to swab() and share globally in swab.h 2020-04-24 08:00:31 +02:00
flex_array.c
flex_proportions.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
gcd.c
gen_crc32table.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
genalloc.c lib/genalloc: fix the overflow when size is too big 2021-01-12 20:09:06 +01:00
glob.c lib: add module support to glob tests 2017-02-24 17:46:57 -08:00
globtest.c lib: add module support to glob tests 2017-02-24 17:46:57 -08:00
hexdump.c hex2bin: fix access beyond string end 2022-05-12 12:17:06 +02:00
hweight.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
idr.c ida: don't use BUG_ON() for debugging 2022-07-12 16:27:29 +02:00
inflate.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
int_sqrt.c lib/int_sqrt: optimize initial value compute 2019-04-05 22:31:24 +02:00
interval_tree.c
interval_tree_test.c lib/rbtree-test: lower default params 2018-12-17 09:28:55 +01:00
iomap.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
iomap_copy.c
iommu-common.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
iommu-helper.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
ioremap.c ioremap: Update pgtable free interfaces with addr 2018-08-17 21:01:11 +02:00
iov_iter.c lib/iov_iter: initialize "flags" in new pipe_buffer 2022-02-23 11:57:35 +01:00
irq_poll.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
irq_regs.c
is_single_threaded.c sched/headers: Prepare to move 'init_task' and 'init_thread_union' from <linux/sched.h> to <linux/sched/task.h> 2017-03-02 08:42:38 +01:00
jedec_ddr_data.c
kasprintf.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
Kconfig ARM: 9178/1: fix unmet dependency on BITREVERSE for HAVE_ARCH_BITREVERSE 2022-03-23 09:01:34 +01:00
Kconfig.debug random: remove ratelimiting for in-kernel unseeded randomness 2022-06-25 11:46:40 +02:00
Kconfig.kasan kasan: rework Kconfig settings 2018-02-16 20:23:04 +01:00
Kconfig.kgdb lib: update location of kgdb documentation 2017-05-16 08:44:22 -03:00
Kconfig.ubsan Kconfig: lib/Kconfig.ubsan fix reference to ubsan documentation 2016-12-14 16:04:08 -08:00
kfifo.c Partially revert "kfifo: fix kfifo_alloc() and kfifo_init()" 2020-01-27 14:46:44 +01:00
klist.c scsi: klist: Make it safe to use klists in atomic context 2018-10-03 17:00:48 -07:00
kobject.c kobject: Replace strncpy with memcpy 2018-12-08 13:03:35 +01:00
kobject_uevent.c kobject_uevent: remove warning in init_uevent_argv() 2021-05-22 10:57:41 +02:00
kstrtox.c lib: vsprintf: Fix handling of number field widths in vsscanf 2021-07-20 16:17:33 +02:00
kstrtox.h lib: vsprintf: Fix handling of number field widths in vsscanf 2021-07-20 16:17:33 +02:00
lcm.c
libcrc32c.c crypto: Work around deallocated stack frame reference gcc bug on sparc. 2017-06-08 17:36:03 +08:00
list_debug.c bug: switch data corruption check to __must_check 2017-02-24 17:46:56 -08:00
list_sort.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
llist.c
locking-selftest-hardirq.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
locking-selftest-mutex.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
locking-selftest-rlock-hardirq.h
locking-selftest-rlock-softirq.h
locking-selftest-rlock.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
locking-selftest-rsem.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
locking-selftest-rtmutex.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
locking-selftest-softirq.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
locking-selftest-spin-hardirq.h
locking-selftest-spin-softirq.h
locking-selftest-spin.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
locking-selftest-wlock-hardirq.h
locking-selftest-wlock-softirq.h
locking-selftest-wlock.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
locking-selftest-wsem.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
locking-selftest.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
lockref.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
lru_cache.c
Makefile crypto: blake2s - generic C library implementation and selftest 2022-06-25 11:46:27 +02:00
memory-notifier-error-inject.c
memweight.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
net_utils.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
netdev-notifier-error-inject.c
nlattr.c net: fix nla_strcmp to handle more then one trailing null character 2021-05-22 10:57:39 +02:00
nmi_backtrace.c printk/nmi: Prevent deadlock when accessing the main log buffer in NMI 2018-09-05 09:26:35 +02:00
nodemask.c nodemask: Fix return values to be unsigned 2022-06-14 16:54:01 +02:00
notifier-error-inject.c lib/notifier-error-inject: fix error when writing -errno to debugfs file 2023-01-18 09:26:10 +01:00
notifier-error-inject.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
of-reconfig-notifier-error-inject.c
oid_registry.c 509: fix printing uninitialized stack memory when OID is empty 2018-02-25 11:08:01 +01:00
once.c once: add DO_ONCE_SLOW() for sleepable contexts 2023-01-18 09:26:04 +01:00
parman.c lib: Introduce priority array area manager 2017-02-03 16:35:42 -05:00
parser.c parser: add u64 number parser 2016-12-06 10:17:03 +02:00
pci_iomap.c
percpu-refcount.c percpu-refcount: support synchronous switch to atomic mode. 2017-03-22 19:18:43 -07:00
percpu_counter.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
percpu_ida.c sched/headers: Prepare to remove the <linux/gfp.h> include from <linux/sched.h> 2017-03-02 08:42:34 +01:00
percpu_test.c
plist.c sched/headers: Prepare for new header dependencies before moving code to <linux/sched/clock.h> 2017-03-02 08:42:27 +01:00
pm-notifier-error-inject.c
prime_numbers.c lib/prime_numbers: Suppress warn on kmalloc failure 2017-01-23 09:17:12 +01:00
radix-tree.c treewide: Remove uninitialized_var() usage 2023-08-11 11:33:32 +02:00
random32.c random: replace custom notifier chain with standard one 2022-06-25 11:46:36 +02:00
ratelimit.c ratelimit: Fix data-races in ___ratelimit(). 2022-09-05 10:25:04 +02:00
rational.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
rbtree.c rbtree: add some additional comments for rebalancing cases 2017-09-08 18:26:48 -07:00
rbtree_test.c lib/rbtree-test: lower default params 2018-12-17 09:28:55 +01:00
reciprocal_div.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
refcount.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
rhashtable.c rhashtable: Still do rehash when we get EEXIST 2019-04-03 06:25:09 +02:00
sbitmap.c sbitmap: fix improper use of smp_mb__before_atomic() 2019-05-31 06:47:10 -07:00
scatterlist.c sgl_alloc_order: fix memory leak 2020-11-05 11:06:58 +01:00
seq_buf.c seq_buf: Fix overflow in seq_buf_putmem_hex() 2021-07-20 16:17:47 +02:00
sg_pool.c
sg_split.c
sha1.c lib/crypto: sha1: re-roll loops to reduce code size 2022-06-25 11:46:27 +02:00
show_mem.c lib/show_mem.c: teach show_mem to work with the given nodemask 2017-02-22 16:41:30 -08:00
siphash.c siphash: use one source of truth for siphash permutations 2022-06-25 11:46:39 +02:00
smp_processor_id.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
sort.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
stackdepot.c lib: stackdepot: turn depot_lock spinlock to raw_spinlock 2021-05-22 10:57:43 +02:00
stmp_device.c
string.c lib/string: Add strscpy_pad() function 2021-02-23 14:00:30 +01:00
string_helpers.c mm: treewide: remove GFP_TEMPORARY allocation flag 2017-09-13 18:53:16 -07:00
strncpy_from_user.c lib: Reduce user_access_begin() boundaries in strncpy_from_user() and strnlen_user() 2020-06-20 10:24:58 +02:00
strnlen_user.c lib: Reduce user_access_begin() boundaries in strncpy_from_user() and strnlen_user() 2020-06-20 10:24:58 +02:00
swiotlb.c swiotlb: skip swiotlb_bounce when orig_addr is zero 2022-07-02 16:18:11 +02:00
syscall.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
test-kstrtox.c
test-string_helpers.c
test_bitmap.c lib/test_bitmap.c: fix bitmap optimisation tests to report errors correctly 2018-05-22 18:53:58 +02:00
test_bpf.c bpf: add also cbpf long jump test cases with heavy expansion 2021-10-17 10:08:32 +02:00
test_debug_virtual.c lib: fix build failure in CONFIG_DEBUG_VIRTUAL test 2019-01-13 10:01:07 +01:00
test_firmware.c test_firmware: return ENOMEM instead of ENOSPC on failed memory allocation 2023-08-16 18:10:54 +02:00
test_hash.c
test_hexdump.c test_hexdump: use memcpy instead of strncpy 2018-12-08 13:03:35 +01:00
test_kasan.c lib/test_kasan.c: fix memory leak in kmalloc_oob_krealloc_more() 2020-02-14 16:32:08 -05:00
test_kmod.c lib/test: use after free in register_test_dev_kmod() 2022-04-20 09:08:21 +02:00
test_list_sort.c lib: add module support to linked list sorting tests 2017-05-08 17:15:10 -07:00
test_module.c
test_parman.c lib: fix spelling mistake: "actualy" -> "actually" 2017-02-26 11:03:38 -05:00
test_printf.c
test_rhashtable.c lib: test_rhashtable: Fix KASAN warning 2017-07-25 12:35:23 -07:00
test_siphash.c siphash: implement HalfSipHash1-3 for hash tables 2017-01-09 13:58:57 -05:00
test_sort.c Revert "lib/test_sort.c: make it explicitly non-modular" 2017-05-08 17:15:10 -07:00
test_static_key_base.c
test_static_keys.c
test_sysctl.c test_sysctl: test against int proc_dointvec() array support 2017-07-12 16:26:00 -07:00
test_user_copy.c lib: remove check for AVR32 arch in test_user_copy 2017-05-01 09:36:30 +02:00
test_uuid.c uuid: fix incorrect uuid_equal conversion in test_uuid_test 2017-07-21 09:38:30 +02:00
textsearch.c
timerqueue.c lib/timerqueue: Rely on rbtree semantics for next timer 2021-10-09 14:09:46 +02:00
ts_bm.c lib/ts_bm: reset initial match offset for every block of text 2023-08-11 11:33:35 +02:00
ts_fsm.c textsearch: fix typos in library helpers 2017-10-22 03:14:07 +01:00
ts_kmp.c textsearch: fix typos in library helpers 2017-10-22 03:14:07 +01:00
ubsan.c ubsan: Fix nasty -Wbuiltin-declaration-mismatch GCC-9 warnings 2019-05-10 17:53:08 +02:00
ubsan.h lib/ubsan: add type mismatch handler for new GCC/Clang 2018-02-16 20:23:09 +01:00
ucs2_string.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
usercopy.c uaccess: Add speculation barrier to copy_from_user() 2023-02-25 11:50:31 +01:00
uuid.c uuid: hoist uuid_is_null() helper from libnvdimm 2017-06-05 16:59:05 +02:00
vsprintf.c lib: vsprintf: Fix handling of number field widths in vsscanf 2021-07-20 16:17:33 +02:00
win_minmax.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
xxhash.c lib: Add xxhash module 2017-08-15 09:02:07 -07:00