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[1/2] ACPI: Return -ENODEV from acpi_parse_spcr() when SPCR support is disabled

Message ID 20250606072802.191580-2-me@linux.beauty
State New
Headers show
Series [1/2] ACPI: Return -ENODEV from acpi_parse_spcr() when SPCR support is disabled | expand

Commit Message

Li Chen June 6, 2025, 7:27 a.m. UTC 
From: Li Chen <chenl311@chinatelecom.cn>

If CONFIG_ACPI_SPCR_TABLE is disabled, acpi_parse_spcr()
currently returns 0, which may incorrectly suggest that
SPCR parsing was successful. This patch changes the behavior
to return -ENODEV to clearly indicate that SPCR support
is not available.

This prepares the codebase for future changes that depend
on acpi_parse_spcr() failure detection, such as suppressing
misleading console messages.

Signed-off-by: Li Chen <chenl311@chinatelecom.cn>
---
 include/linux/acpi.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
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Patch

diff --git a/include/linux/acpi.h b/include/linux/acpi.h
index f102c0fe34318..71e692f952905 100644
--- a/include/linux/acpi.h
+++ b/include/linux/acpi.h
@@ -1503,7 +1503,7 @@  int acpi_parse_spcr(bool enable_earlycon, bool enable_console);
 #else
 static inline int acpi_parse_spcr(bool enable_earlycon, bool enable_console)
 {
-	return 0;
+	return -ENODEV;
 }
 #endif