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| author | Kees Cook <kees@outflux.net> | 2023-04-05 15:53:20 +0200 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2023-04-06 20:29:12 +0200 |
| commit | 6671709c6ee5a9970ad94fe80823dc2fab711f84 (patch) | |
| tree | a34f3c66db8be0fb274a1a3ddb130d8436e6cb68 /include/acpi | |
| parent | ACPICA: Introduce ACPI_FLEX_ARRAY (diff) | |
| download | linux-6671709c6ee5a9970ad94fe80823dc2fab711f84.tar.xz linux-6671709c6ee5a9970ad94fe80823dc2fab711f84.zip | |
ACPICA: struct acpi_resource_dma: Replace 1-element array with flexible array
ACPICA commit 8409bb869a1790f6e02391c3f0eaf9c5fa63e33f
Similar to "Replace one-element array with flexible-array", replace the
1-element array with a proper flexible array member as defined by C99,
but without changing the structure size.
This allows the code to operate without tripping compile-time and run-
time bounds checkers (e.g. via __builtin_object_size(), -fsanitize=bounds,
and/or -fstrict-flex-arrays=3). As with IRQs, leave a single element in
a union.
No binary changes appear in the .text nor .data sections.
Link: https://github.com/acpica/acpica/commit/8409bb86
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'include/acpi')
| -rw-r--r-- | include/acpi/acrestyp.h | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/include/acpi/acrestyp.h b/include/acpi/acrestyp.h index 77d735594ac2..bfba293787ba 100644 --- a/include/acpi/acrestyp.h +++ b/include/acpi/acrestyp.h @@ -150,7 +150,10 @@ struct acpi_resource_dma { u8 bus_master; u8 transfer; u8 channel_count; - u8 channels[1]; + union { + u8 channel; + ACPI_FLEX_ARRAY(u8, channels); + }; }; struct acpi_resource_start_dependent { |