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| author | Miguel Ojeda <ojeda@kernel.org> | 2026-08-16 15:32:33 +0200 |
|---|---|---|
| committer | Miguel Ojeda <ojeda@kernel.org> | 2026-08-23 21:27:17 +0200 |
| commit | 5febf432df1cfa5b25d99b54c32103fafbdd0eb9 (patch) | |
| tree | 93a1ed1d337bc53adf1e572c2586d347703b286e /include/sound/cs35l34.h | |
| download | linux-stable-5febf432df1cfa5b25d99b54c32103fafbdd0eb9.tar.gz linux-stable-5febf432df1cfa5b25d99b54c32103fafbdd0eb9.zip | |
kbuild: rust: keep Rust objects out of Clang LTO with inline helpersgrafted
Under `CONFIG_LTO_CLANG` + `CONFIG_RUST_INLINE_HELPERS`, one may hit
`objtool` errors such as:
vmlinux.o: error: objtool: _R..._3Gsp4boot+0xd6a:
can't find jump dest instruction at .text._R..._3Gsp4boot+0x1dfd
The reason is that in such builds, the Clang invocation that compiles
the combined Rust plus helpers bitcode emits LLVM bitcode (again) --
the final code generation happens in the linker's LTO step, which the
`-mllvm` trap options passed to Clang do not reach.
This, in turn, means that unreachable traps are missing, and the
impossible paths do not merely fallthrough to the next symbol, but past
the end of their own section, since LTO builds place each function in
its own section.
Thus filter `CC_FLAGS_LTO` out of the Clang invocation, so that it always
emits machine code directly, with the traps in place.
Assisted-by: LLM
Cc: Gary Guo <gary@garyguo.net>
Cc: Boqun Feng <boqun@kernel.org>
Cc: Alice Ryhl <aliceryhl@google.com>
Cc: Matthew Maurer <mmaurer@google.com>
Cc: Josh Poimboeuf <jpoimboe@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: stable@vger.kernel.org
Fixes: 3a2486cc1da5 ("kbuild: rust: provide an option to inline C helpers into Rust")
Acked-by: Gary Guo <gary@garyguo.net>
Link: https://patch.msgid.link/20260816133233.197500-2-ojeda@kernel.org
Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
Diffstat (limited to 'include/sound/cs35l34.h')
| -rw-r--r-- | include/sound/cs35l34.h | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/include/sound/cs35l34.h b/include/sound/cs35l34.h new file mode 100644 index 000000000..8b0c4d94d --- /dev/null +++ b/include/sound/cs35l34.h @@ -0,0 +1,32 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* + * linux/sound/cs35l34.h -- Platform data for CS35l34 + * + * Copyright (c) 2016 Cirrus Logic Inc. + */ + +#ifndef __CS35L34_H +#define __CS35L34_H + +struct cs35l34_platform_data { + /* Set AIF to half drive strength */ + bool aif_half_drv; + /* Digital Soft Ramp Disable */ + bool digsft_disable; + /* Amplifier Invert */ + bool amp_inv; + /* Peak current (mA) */ + unsigned int boost_peak; + /* Boost inductor value (nH) */ + unsigned int boost_ind; + /* Boost Controller Voltage Setting (mV) */ + unsigned int boost_vtge; + /* Gain Change Zero Cross */ + bool gain_zc_disable; + /* SDIN Left/Right Selection */ + unsigned int i2s_sdinloc; + /* TDM Rising Edge */ + bool tdm_rising_edge; +}; + +#endif /* __CS35L34_H */ |