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-rw-r--r--include/linux/acpi.h6
1 files changed, 6 insertions, 0 deletions
diff --git a/include/linux/acpi.h b/include/linux/acpi.h
index 4f82a5bc6d98..968a187f14f0 100644
--- a/include/linux/acpi.h
+++ b/include/linux/acpi.h
@@ -762,6 +762,7 @@ static inline u64 acpi_arch_get_root_pointer(void)
#endif
int acpi_get_local_address(acpi_handle handle, u32 *addr);
+const char *acpi_get_subsystem_id(acpi_handle handle);
#else /* !CONFIG_ACPI */
@@ -1023,6 +1024,11 @@ static inline int acpi_get_local_address(acpi_handle handle, u32 *addr)
return -ENODEV;
}
+static inline const char *acpi_get_subsystem_id(acpi_handle handle)
+{
+ return ERR_PTR(-ENODEV);
+}
+
static inline int acpi_register_wakeup_handler(int wake_irq,
bool (*wakeup)(void *context), void *context)
{