[ 001/135] [PARISC] Redefine ATOMIC_INIT and ATOMIC64_INIT to drop the casts

2012-09-16 Thread Ben Hutchings
3.2-stable review patch.  If anyone has any objections, please let me know.

--

From: Mel Gorman 

commit bba3d8c3b3c0f2123be5bc687d1cddc13437c923 upstream.

The following build error occured during a parisc 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

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.

Reported-by: Fengguang Wu 
Signed-off-by: Mel Gorman 
Signed-off-by: James Bottomley 
Signed-off-by: Ben Hutchings 
---
 arch/parisc/include/asm/atomic.h |4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/arch/parisc/include/asm/atomic.h b/arch/parisc/include/asm/atomic.h
index 6c6defc..af9cf30 100644
--- a/arch/parisc/include/asm/atomic.h
+++ b/arch/parisc/include/asm/atomic.h
@@ -141,7 +141,7 @@ static __inline__ int __atomic_add_unless(atomic_t *v, int 
a, int u)
 
 #define atomic_sub_and_test(i,v)   (atomic_sub_return((i),(v)) == 0)
 
-#define ATOMIC_INIT(i) ((atomic_t) { (i) })
+#define ATOMIC_INIT(i) { (i) }
 
 #define smp_mb__before_atomic_dec()smp_mb()
 #define smp_mb__after_atomic_dec() smp_mb()
@@ -150,7 +150,7 @@ static __inline__ int __atomic_add_unless(atomic_t *v, int 
a, int u)
 
 #ifdef CONFIG_64BIT
 
-#define ATOMIC64_INIT(i) ((atomic64_t) { (i) })
+#define ATOMIC64_INIT(i) { (i) }
 
 static __inline__ s64
 __atomic64_add_return(s64 i, atomic64_t *v)


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[ 001/135] [PARISC] Redefine ATOMIC_INIT and ATOMIC64_INIT to drop the casts

2012-09-16 Thread Ben Hutchings
3.2-stable review patch.  If anyone has any objections, please let me know.

--

From: Mel Gorman mgor...@suse.de

commit bba3d8c3b3c0f2123be5bc687d1cddc13437c923 upstream.

The following build error occured during a parisc 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

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.

Reported-by: Fengguang Wu fengguang...@intel.com
Signed-off-by: Mel Gorman mgor...@suse.de
Signed-off-by: James Bottomley jbottom...@parallels.com
Signed-off-by: Ben Hutchings b...@decadent.org.uk
---
 arch/parisc/include/asm/atomic.h |4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/arch/parisc/include/asm/atomic.h b/arch/parisc/include/asm/atomic.h
index 6c6defc..af9cf30 100644
--- a/arch/parisc/include/asm/atomic.h
+++ b/arch/parisc/include/asm/atomic.h
@@ -141,7 +141,7 @@ static __inline__ int __atomic_add_unless(atomic_t *v, int 
a, int u)
 
 #define atomic_sub_and_test(i,v)   (atomic_sub_return((i),(v)) == 0)
 
-#define ATOMIC_INIT(i) ((atomic_t) { (i) })
+#define ATOMIC_INIT(i) { (i) }
 
 #define smp_mb__before_atomic_dec()smp_mb()
 #define smp_mb__after_atomic_dec() smp_mb()
@@ -150,7 +150,7 @@ static __inline__ int __atomic_add_unless(atomic_t *v, int 
a, int u)
 
 #ifdef CONFIG_64BIT
 
-#define ATOMIC64_INIT(i) ((atomic64_t) { (i) })
+#define ATOMIC64_INIT(i) { (i) }
 
 static __inline__ s64
 __atomic64_add_return(s64 i, atomic64_t *v)


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