From 55fc280e951ab2b39f3dcb640edc1b1eebc6d173 Mon Sep 17 00:00:00 2001 From: "Rob Herring (Arm)" Date: Mon, 31 Aug 2026 14:43:51 -0500 Subject: Input: tsc2007 - read "ti,poll-period" as u32 The "ti,poll-period" property is documented as a normal uint32 cell. The driver used a u64 helper, which makes the helper type disagree with the schema even though the stored value is still small. Read "ti,poll-period" with the u32 helper matching the documented DT cell size. Assisted-by: Codex:gpt-5-5 Signed-off-by: Rob Herring (Arm) Link: https://patch.msgid.link/20260831194352.1185860-1-robh@kernel.org Signed-off-by: Dmitry Torokhov --- rust/helpers/atomic_ext.c | 87 +++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 87 insertions(+) create mode 100644 rust/helpers/atomic_ext.c (limited to 'rust/helpers/atomic_ext.c') diff --git a/rust/helpers/atomic_ext.c b/rust/helpers/atomic_ext.c new file mode 100644 index 000000000..c267d5190 --- /dev/null +++ b/rust/helpers/atomic_ext.c @@ -0,0 +1,87 @@ +// SPDX-License-Identifier: GPL-2.0 + +#include +#include +#include + +#define GEN_READ_HELPER(tname, type) \ +__rust_helper type rust_helper_atomic_##tname##_read(type *ptr) \ +{ \ + return READ_ONCE(*ptr); \ +} + +#define GEN_SET_HELPER(tname, type) \ +__rust_helper void rust_helper_atomic_##tname##_set(type *ptr, type val) \ +{ \ + WRITE_ONCE(*ptr, val); \ +} + +#define GEN_READ_ACQUIRE_HELPER(tname, type) \ +__rust_helper type rust_helper_atomic_##tname##_read_acquire(type *ptr) \ +{ \ + return smp_load_acquire(ptr); \ +} + +#define GEN_SET_RELEASE_HELPER(tname, type) \ +__rust_helper void rust_helper_atomic_##tname##_set_release(type *ptr, type val)\ +{ \ + smp_store_release(ptr, val); \ +} + +#define GEN_READ_SET_HELPERS(tname, type) \ + GEN_READ_HELPER(tname, type) \ + GEN_SET_HELPER(tname, type) \ + GEN_READ_ACQUIRE_HELPER(tname, type) \ + GEN_SET_RELEASE_HELPER(tname, type) \ + +GEN_READ_SET_HELPERS(i8, s8) +GEN_READ_SET_HELPERS(i16, s16) +GEN_READ_SET_HELPERS(ptr, const void *) + +/* + * xchg helpers depend on ARCH_SUPPORTS_ATOMIC_RMW and on the + * architecture provding xchg() support for i8 and i16. + * + * The architectures that currently support Rust (x86_64, armv7, + * arm64, riscv, and loongarch) satisfy these requirements. + */ +#define GEN_XCHG_HELPER(tname, type, suffix) \ +__rust_helper type \ +rust_helper_atomic_##tname##_xchg##suffix(type *ptr, type new) \ +{ \ + return xchg##suffix(ptr, new); \ +} + +#define GEN_XCHG_HELPERS(tname, type) \ + GEN_XCHG_HELPER(tname, type, ) \ + GEN_XCHG_HELPER(tname, type, _acquire) \ + GEN_XCHG_HELPER(tname, type, _release) \ + GEN_XCHG_HELPER(tname, type, _relaxed) \ + +GEN_XCHG_HELPERS(i8, s8) +GEN_XCHG_HELPERS(i16, s16) +GEN_XCHG_HELPERS(ptr, const void *) + +/* + * try_cmpxchg helpers depend on ARCH_SUPPORTS_ATOMIC_RMW and on the + * architecture provding try_cmpxchg() support for i8 and i16. + * + * The architectures that currently support Rust (x86_64, armv7, + * arm64, riscv, and loongarch) satisfy these requirements. + */ +#define GEN_TRY_CMPXCHG_HELPER(tname, type, suffix) \ +__rust_helper bool \ +rust_helper_atomic_##tname##_try_cmpxchg##suffix(type *ptr, type *old, type new)\ +{ \ + return try_cmpxchg##suffix(ptr, old, new); \ +} + +#define GEN_TRY_CMPXCHG_HELPERS(tname, type) \ + GEN_TRY_CMPXCHG_HELPER(tname, type, ) \ + GEN_TRY_CMPXCHG_HELPER(tname, type, _acquire) \ + GEN_TRY_CMPXCHG_HELPER(tname, type, _release) \ + GEN_TRY_CMPXCHG_HELPER(tname, type, _relaxed) \ + +GEN_TRY_CMPXCHG_HELPERS(i8, s8) +GEN_TRY_CMPXCHG_HELPERS(i16, s16) +GEN_TRY_CMPXCHG_HELPERS(ptr, const void *) -- cgit v1.3.1