acpi/bgrt: Don't let users configure BGRT on non X86 systems
Quoted 22 lines · Tony
Fengguang Wu's 0-Day kernel build testing backend found the following build error for an allmodconfig build on ia64:
drivers/built-in.o: In function `show_yoffset':Quoted 2 lines
Quoted 2 lines
bgrt.c:(.text+0xe5a71): undefined reference to
bgrt_tab' bgrt.c:(.text+0xe5a91): undefined reference tobgrt_tab'
drivers/built-in.o: In function `show_xoffset':Quoted 2 lines
Quoted 2 lines
bgrt.c:(.text+0xe5b51): undefined reference to
bgrt_tab' bgrt.c:(.text+0xe5b71): undefined reference tobgrt_tab'
drivers/built-in.o: In function `show_type':Quoted 1 line
Quoted 1 line
bgrt.c:(.text+0xe5c31): undefined reference to `bgrt_tab'
drivers/built-in.o:bgrt.c:(.text+0xe5c51): more undefined references to `bgrt_tab' follow drivers/built-in.o: In function `bgrt_init': bgrt.c:(.init.text+0x8931): undefined reference to `bgrt_image' bgrt.c:(.init.text+0x8932): undefined reference to `bgrt_image_size' bgrt.c:(.init.text+0x8950): undefined reference to `bgrt_image' bgrt.c:(.init.text+0x8960): undefined reference to `bgrt_image_size'The problem is that all these undefined names are provided by
arch/x86/platform/efi/efi-bgrt.c- which is obviously not available to the ia64 build.
Quoted 7 lines
It doesn't seem useful to provide the BGRT support for Itanium (many systems are headless and have no graphics at all). So just don't let users configure this driver on non-X86 machines.
Reported-by Fengguang Wu <[email protected]>Acked-by H. Peter Anvin <[email protected]>Signed-off-by Tony Luck <[email protected]>
I'd take it, but it didn't seem to make it to the list for some obscure reason and I'd prefer it to show up there before it shows up in my tree.
Let's see if my reply makes it.
Thanks,
Rafael
Quoted 9 lines
--- drivers/acpi/Kconfig | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)drivers/acpi/Kconfig +0
-0
drivers/acpi/Kconfig config ACPI_CUSTOM_METHOD · line 401
Quoted 8 lines
drivers/acpi/Kconfig +1
-1@@ -395,7 +395,7 @@ config ACPI_CUSTOM_METHOD config ACPI_BGRT bool "Boottime Graphics Resource Table support" - depends on EFI + depends on EFI && X86 help This driver adds support for exposing the ACPI Boottime Graphics Resource Table, which allows the operating system to obtain
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