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

[ 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/
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>

diff --git a/drivers/platform/x86/thinkpad_acpi.c b/drivers/platform/x86/thinkpad_acpi.c
index 9eb74d9e1519c6b3ef55bfb6beeabfe219b8b387..e480fff7142a0a39860de700d0f708f8ab61d0f4 100644 (file)
--- a/drivers/platform/x86/thinkpad_acpi.c
+++ b/drivers/platform/x86/thinkpad_acpi.c
@@ -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;
 }