linux-kernel - [PATCH] kernel/sys.c: Add build-time check for UNAME26

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Date:	Mon,  2 Mar 2015 14:10:52 +0100
From:	Geert Uytterhoeven <geert@...ux-m68k.org>
To:	Linus Torvalds <torvalds@...ux-foundation.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Jon DeVree <nuxi@...lt24.org>
Cc:	linux-kernel@...r.kernel.org,
	Geert Uytterhoeven <geert@...ux-m68k.org>
Subject: [PATCH] kernel/sys.c: Add build-time check for UNAME26

Add a build-time check for the major version number, to make sure Linus
will update the UNAME26 implementation (and the comment at the top of
the function) at the next version increase.

Signed-off-by: Geert Uytterhoeven <geert@...ux-m68k.org>
---
 kernel/sys.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/kernel/sys.c b/kernel/sys.c
index a03d9cd23ed779b2..ead9bd7b8a47eee4 100644
--- a/kernel/sys.c
+++ b/kernel/sys.c
@@ -1128,6 +1128,7 @@ static int override_release(char __user *release, size_t len)
 				break;
 			rest++;
 		}
+		BUILD_BUG_ON((LINUX_VERSION_CODE >> 16) != 4);
 		v = ((LINUX_VERSION_CODE >> 8) & 0xff) + 60;
 		copy = clamp_t(size_t, len, 1, sizeof(buf));
 		copy = scnprintf(buf, copy, "2.6.%u%s", v, rest);
-- 
1.9.1

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