On Thu, Jun 08, 2017 at 04:04:15PM +1000, Stephen Rothwell wrote:

Hi Christoph,

After merging the uuid tree, today's linux-next build (powerpc
ppc64_defconfig) failed like this:

In file included from drivers/base/cpu.c:16:0:
include/linux/acpi.h:744:16: error: unknown type name 'guid_t'
          const guid_t *guid,
                ^

Caused by commit

  94116f8126de ("ACPI: Switch to use generic guid_t in acpi_evaluate_dsm()")

linux/uuid.h is only include for the CONFIG_ACPI case (in commit
41c8bdb3ab10 "acpi, nfit: Switch to use new generic UUID API").  This
build does not have CONFIG_ACPI set.

Meh.  Fix below:

---

From bcbc2265f269cc57924371e3bce8c3220d0270c5 Mon Sep 17 00:00:00 2001

From: Christoph Hellwig <hch@lst.de>
Date: Thu, 8 Jun 2017 09:02:20 +0200
Subject: acpi: always include uuid.h

Without this the build will fail for !CONFIG_ACPI builds on x86.

Fixes: 94116f81 ("ACPI: Switch to use generic guid_t in acpi_evaluate_dsm()")
Signed-off-by: Christoph Hellwig <hch@lst.de>
---
 include/linux/acpi.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/include/linux/acpi.h b/include/linux/acpi.h
index ab19365c905f..cafdfb84ca28 100644
--- a/include/linux/acpi.h
+++ b/include/linux/acpi.h

@@ -26,6 +26,7 @@
 #include <linux/resource_ext.h>
 #include <linux/device.h>
 #include <linux/property.h>
+#include <linux/uuid.h>
 
 #ifndef _LINUX
 #define _LINUX

@@ -39,7 +40,6 @@
 #include <linux/dynamic_debug.h>
 #include <linux/module.h>
 #include <linux/mutex.h>
-#include <linux/uuid.h>
 
 #include <acpi/acpi_bus.h>
 #include <acpi/acpi_drivers.h>

-- 
2.11.0