1 files changed, 56 insertions, 0 deletions
diff --git a/main/linux-headers/include-uapi-linux-swab-Fix-potentially-missing-__always_inline.patch b/main/linux-headers/include-uapi-linux-swab-Fix-potentially-missing-__always_inline.patch
new file mode 100644
index 0000000000..a0b8b734e3
--- /dev/null
+++ b/main/linux-headers/include-uapi-linux-swab-Fix-potentially-missing-__always_inline.patch
@@ -0,0 +1,56 @@
+From: Matt Redfearn <matt.redfearn@mips.com>
+Subject: [PATCH] include/uapi/linux/swab: Fix potentially missing __always_inline
+Date: Wed, 3 Jan 2018 09:57:30 +0000
+Message-ID: <1514973450-12447-1-git-send-email-matt.redfearn@mips.com>
+X-Mailer: git-send-email 2.7.4
+MIME-Version: 1.0
+Content-Type: text/plain; charset="UTF-8"
+Content-Transfer-Encoding: 8BIT
+
+Commit bc27fb68aaad ("include/uapi/linux/byteorder, swab: force inlining
+of some byteswap operations") added __always_inline to swab functions
+and commit 283d75737837 ("uapi/linux/stddef.h: Provide __always_inline to
+userspace headers") added a definition of __always_inline for use in
+exported headers when the kernel's compiler.h is not available.
+
+However, since swab.h does not include stddef.h, if the header soup does
+not indirectly include it, the definition of __always_inline is missing,
+resulting in a compilation failure, which was observed compiling the
+perf tool using exported headers containing this commit:
+
+In file included from /usr/include/linux/byteorder/little_endian.h:12:0,
+                 from /usr/include/asm/byteorder.h:14,
+                 from tools/include/uapi/linux/perf_event.h:20,
+                 from perf.h:8,
+                 from builtin-bench.c:18:
+/usr/include/linux/swab.h:160:8: error: unknown type name ‘__always_inline’
+ static __always_inline __u16 __swab16p(const __u16 *p)
+
+Fix this by replacing the inclusion of linux/compiler.h with
+linux/stddef.h to ensure that we pick up that definition if required,
+without relying on it's indirect inclusion. compiler.h is then included
+indirectly, via stddef.h.
+
+Fixes: 283d75737837 ("uapi/linux/stddef.h: Provide __always_inline to userspace headers")
+Signed-off-by: Matt Redfearn <matt.redfearn@mips.com>
+
+---
+
+ include/uapi/linux/swab.h | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/include/uapi/linux/swab.h b/include/uapi/linux/swab.h
+index 23cd84868cc3..f6a8cf737abf 100644
+--- a/include/uapi/linux/swab.h
++++ b/include/uapi/linux/swab.h
+@@ -3,7 +3,7 @@
+ #define _UAPI_LINUX_SWAB_H
+ 
+ #include <linux/types.h>
+-#include <linux/compiler.h>
++#include <linux/stddef.h>
+ #include <asm/swab.h>
+ 
+ /*
+-- 
+2.7.4