From: Andrew Morton <akpm@linux-foundation.org>
Date: Wed, 2 Apr 2008 20:04:52 +0000 (-0700)
Subject: alpha: get_current(): don't add zero to current_thread_info()->task
X-Git-Tag: firefly_0821_release~21755
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=06f11f37aa84e83b48cdf36037c4414f5a83c13f;p=firefly-linux-kernel-4.4.55.git

alpha: get_current(): don't add zero to current_thread_info()->task

A nasty compile error:

In file included from security/keys/internal.h:16,
                 from security/keys/sysctl.c:14:
include/linux/key-ui.h: In function 'key_permission':
include/linux/key-ui.h:51: error: invalid use of undefined type 'struct task_struct'

apparently the compiler has decided that it needs to know sizeof(task_struct)
so that it can add zero to a task_struct* (which is rather dumb of it).

Getting task_struct in scope in these deeply-nested headers is scary-looking,
so let's just remove the "+ 0".

Cc: David Howells <dhowells@redhat.com>
Cc: Richard Henderson <rth@twiddle.net>
Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---

diff --git a/include/asm-alpha/current.h b/include/asm-alpha/current.h
index 8d88a13c1bec..094d285a1b34 100644
--- a/include/asm-alpha/current.h
+++ b/include/asm-alpha/current.h
@@ -3,7 +3,7 @@
 
 #include <linux/thread_info.h>
 
-#define get_current()	(current_thread_info()->task + 0)
+#define get_current()	(current_thread_info()->task)
 #define current		get_current()
 
 #endif /* _ALPHA_CURRENT_H */