linux-kernel - [PATCH 19/22] signal/blackfin: Remove pointless UID16_SIGINFO_COMPAT

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Date:   Mon, 15 Jan 2018 18:40:06 -0600
From:   "Eric W. Biederman" <ebiederm@...ssion.com>
To:     linux-kernel@...r.kernel.org
Cc:     Al Viro <viro@...iv.linux.org.uk>, Oleg Nesterov <oleg@...hat.com>,
        linux-arch@...r.kernel.org,
        "Eric W. Biederman" <ebiederm@...ssion.com>
Subject: [PATCH 19/22] signal/blackfin: Remove pointless UID16_SIGINFO_COMPAT_NEEDED

Nothing tests this define so just remove it.

I suspect the intention was to make the uid field in siginfo 16bit
however I can't find any code that ever tested this defined, and
even if it did it the layout has been this way for 8 years so
changing it now would break the ABI with userspace.

Signed-off-by: "Eric W. Biederman" <ebiederm@...ssion.com>
---
 arch/blackfin/include/uapi/asm/siginfo.h | 2 --
 1 file changed, 2 deletions(-)

diff --git a/arch/blackfin/include/uapi/asm/siginfo.h b/arch/blackfin/include/uapi/asm/siginfo.h
index 8c505170f4d0..2dd8c9c39248 100644
--- a/arch/blackfin/include/uapi/asm/siginfo.h
+++ b/arch/blackfin/include/uapi/asm/siginfo.h
@@ -11,8 +11,6 @@
 #include <linux/types.h>
 #include <asm-generic/siginfo.h>
 
-#define UID16_SIGINFO_COMPAT_NEEDED
-
 #define si_uid16	_sifields._kill._uid
 
 #endif /* _UAPI_BFIN_SIGINFO_H */
-- 
2.14.1