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authorJuergen Gross <[email protected]>2018-02-19 11:09:04 +0100
committerIngo Molnar <[email protected]>2018-02-26 08:43:20 +0100
commitdfc9327ab7c99bc13e12106448615efba833886b (patch)
treec3284f933637991743e016fc8ba0fc6ad3a2cc1c /include
parent3f7df3efeb415610d27aecc282ff96d4a22f0168 (diff)
acpi: Introduce acpi_arch_get_root_pointer() for getting rsdp address
Add an architecture specific function to get the address of the RSDP table. Per default it will just return 0 indicating falling back to the current mechanism. Signed-off-by: Juergen Gross <[email protected]> Reviewed-by: Andy Shevchenko <[email protected]> Acked-by: Thomas Gleixner <[email protected]> Acked-by: Rafael J. Wysocki <[email protected]> Cc: Borislav Petkov <[email protected]> Cc: Eric Biederman <[email protected]> Cc: H. Peter Anvin <[email protected]> Cc: Kees Cook <[email protected]> Cc: Kirill A. Shutemov <[email protected]> Cc: Linus Torvalds <[email protected]> Cc: Peter Zijlstra <[email protected]> Cc: [email protected] Cc: [email protected] Cc: [email protected] Cc: [email protected] Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: Ingo Molnar <[email protected]>
Diffstat (limited to 'include')
-rw-r--r--include/linux/acpi.h7
1 files changed, 7 insertions, 0 deletions
diff --git a/include/linux/acpi.h b/include/linux/acpi.h
index 968173ec2726..15bfb15c2fa5 100644
--- a/include/linux/acpi.h
+++ b/include/linux/acpi.h
@@ -623,6 +623,13 @@ bool acpi_gtdt_c3stop(int type);
int acpi_arch_timer_mem_init(struct arch_timer_mem *timer_mem, int *timer_count);
#endif
+#ifndef ACPI_HAVE_ARCH_GET_ROOT_POINTER
+static inline u64 acpi_arch_get_root_pointer(void)
+{
+ return 0;
+}
+#endif
+
#else /* !CONFIG_ACPI */
#define acpi_disabled 1