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authorTony Luck <tony.luck@intel.com>2012-07-26 10:55:26 -0700
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2012-08-15 12:04:09 -0700
commit5bf75ed61c9715435661971acd4e181c26f2af20 (patch)
treec433eec1fa777328e514881fcce6c9428ee8a1a3 /arch/ia64
parent22268214261ad64783cbad1d9c1df227302e5ed1 (diff)
Redefine ATOMIC_INIT and ATOMIC64_INIT to drop the casts
commit a119365586b0130dfea06457f584953e0ff6481d upstream. The following build error occured during a ia64 build with swap-over-NFS patches applied. net/core/sock.c:274:36: error: initializer element is not constant net/core/sock.c:274:36: error: (near initialization for 'memalloc_socks') net/core/sock.c:274:36: error: initializer element is not constant This is identical to a parisc build error. Fengguang Wu, Mel Gorman and James Bottomley did all the legwork to track the root cause of the problem. This fix and entire commit log is shamelessly copied from them with one extra detail to change a dubious runtime use of ATOMIC_INIT() to atomic_set() in drivers/char/mspec.c Dave Anglin says: > Here is the line in sock.i: > > struct static_key memalloc_socks = ((struct static_key) { .enabled = > ((atomic_t) { (0) }) }); The above line contains two compound literals. It also uses a designated initializer to initialize the field enabled. A compound literal is not a constant expression. The location of the above statement isn't fully clear, but if a compound literal occurs outside the body of a function, the initializer list must consist of constant expressions. Signed-off-by: Tony Luck <tony.luck@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'arch/ia64')
-rw-r--r--arch/ia64/include/asm/atomic.h4
1 files changed, 2 insertions, 2 deletions
diff --git a/arch/ia64/include/asm/atomic.h b/arch/ia64/include/asm/atomic.h
index 446881439675..6fcc9a081e4c 100644
--- a/arch/ia64/include/asm/atomic.h
+++ b/arch/ia64/include/asm/atomic.h
@@ -18,8 +18,8 @@
#include <asm/system.h>
-#define ATOMIC_INIT(i) ((atomic_t) { (i) })
-#define ATOMIC64_INIT(i) ((atomic64_t) { (i) })
+#define ATOMIC_INIT(i) { (i) }
+#define ATOMIC64_INIT(i) { (i) }
#define atomic_read(v) (*(volatile int *)&(v)->counter)
#define atomic64_read(v) (*(volatile long *)&(v)->counter)