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platform/x86: thinkpad_acpi: Handle KCOV __init vs inline mismatches

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[ Upstream commit 6418a8504187dc7f5b6f9d0649c03e362cb0664b ]

When KCOV is enabled all functions get instrumented, unless the
__no_sanitize_coverage attribute is used. To prepare for
__no_sanitize_coverage being applied to __init functions[1], we have
to handle differences in how GCC's inline optimizations get resolved.
For thinkpad_acpi routines, this means forcing two functions to be
inline with __always_inline.

Link: https://lore.kernel.org/lkml/20250523043935.2009972-11-kees@kernel.org/ [1]
Signed-off-by: Kees Cook <kees@kernel.org>
Link: https://lore.kernel.org/r/20250529181831.work.439-kees@kernel.org
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Kees Cook 2025-05-29 11:18:37 -07:00 • committed by Greg Kroah-Hartman
commit cfff555f6c
1 changed files with 2 additions and 2 deletions
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4
drivers/platform/x86/thinkpad_acpi.c
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@ -514,12 +514,12 @@ static unsigned long __init tpacpi_check_quirks(
return 0;
}
static inline bool __pure __init tpacpi_is_lenovo(void)
static __always_inline bool __pure __init tpacpi_is_lenovo(void)
{
return thinkpad_id.vendor == PCI_VENDOR_ID_LENOVO;
}
static inline bool __pure __init tpacpi_is_ibm(void)
static __always_inline bool __pure __init tpacpi_is_ibm(void)
{
return thinkpad_id.vendor == PCI_VENDOR_ID_IBM;
}