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SubjectRe: [PATCH] Phonet:fix build problem
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On Sun, 2009-03-22 at 03:19 +0300, Alexander Beregalov wrote:
> 2009/3/22 David Miller <davem@davemloft.net>:
> > From: Alexander Beregalov <a.beregalov@gmail.com>
> > Date: Fri, 20 Mar 2009 14:58:38 +0300
> >
> >> net/phonet/pep.c: In function 'pipe_rcv_status':
> >> net/phonet/pep.c:262: error: lvalue required as left operand of assignment
> >>
> >> Signed-off-by: Alexander Beregalov <a.beregalov@gmail.com>
> >
> > What platform hits this problem?
> >
> > I think that platform's atomic_add() implementation should
> > be fixed instead.
>
> It is parisc, CC added.

Looks like a macro argument screw up in atomic.h

This should fix it (uncompiled, of course).

James

---

diff --git a/arch/parisc/include/asm/atomic.h b/arch/parisc/include/asm/atomic.h
index edbfe25..ada3e53 100644
--- a/arch/parisc/include/asm/atomic.h
+++ b/arch/parisc/include/asm/atomic.h
@@ -25,7 +25,7 @@
* Since "a" is usually an address, use one spinlock per cacheline.
*/
# define ATOMIC_HASH_SIZE 4
-# define ATOMIC_HASH(a) (&(__atomic_hash[ (((unsigned long) a)/L1_CACHE_BYTES) & (ATOMIC_HASH_SIZE-1) ]))
+# define ATOMIC_HASH(a) (&(__atomic_hash[ (((unsigned long) (a))/L1_CACHE_BYTES) & (ATOMIC_HASH_SIZE-1) ]))

extern raw_spinlock_t __atomic_hash[ATOMIC_HASH_SIZE] __lock_aligned;

@@ -222,13 +222,13 @@ static __inline__ int atomic_add_unless(atomic_t *v, int a, int u)

#define atomic_inc_not_zero(v) atomic_add_unless((v), 1, 0)

-#define atomic_add(i,v) ((void)(__atomic_add_return( ((int)i),(v))))
-#define atomic_sub(i,v) ((void)(__atomic_add_return(-((int)i),(v))))
+#define atomic_add(i,v) ((void)(__atomic_add_return( ((int)(i)),(v))))
+#define atomic_sub(i,v) ((void)(__atomic_add_return(-((int)(i)),(v))))
#define atomic_inc(v) ((void)(__atomic_add_return( 1,(v))))
#define atomic_dec(v) ((void)(__atomic_add_return( -1,(v))))

-#define atomic_add_return(i,v) (__atomic_add_return( ((int)i),(v)))
-#define atomic_sub_return(i,v) (__atomic_add_return(-((int)i),(v)))
+#define atomic_add_return(i,v) (__atomic_add_return( ((int)(i)),(v)))
+#define atomic_sub_return(i,v) (__atomic_add_return(-((int)(i)),(v)))
#define atomic_inc_return(v) (__atomic_add_return( 1,(v)))
#define atomic_dec_return(v) (__atomic_add_return( -1,(v)))

@@ -289,13 +289,13 @@ atomic64_read(const atomic64_t *v)
return v->counter;
}

-#define atomic64_add(i,v) ((void)(__atomic64_add_return( ((s64)i),(v))))
-#define atomic64_sub(i,v) ((void)(__atomic64_add_return(-((s64)i),(v))))
+#define atomic64_add(i,v) ((void)(__atomic64_add_return( ((s64)(i)),(v))))
+#define atomic64_sub(i,v) ((void)(__atomic64_add_return(-((s64)(i)),(v))))
#define atomic64_inc(v) ((void)(__atomic64_add_return( 1,(v))))
#define atomic64_dec(v) ((void)(__atomic64_add_return( -1,(v))))

-#define atomic64_add_return(i,v) (__atomic64_add_return( ((s64)i),(v)))
-#define atomic64_sub_return(i,v) (__atomic64_add_return(-((s64)i),(v)))
+#define atomic64_add_return(i,v) (__atomic64_add_return( ((s64)(i)),(v)))
+#define atomic64_sub_return(i,v) (__atomic64_add_return(-((s64)(i)),(v)))
#define atomic64_inc_return(v) (__atomic64_add_return( 1,(v)))
#define atomic64_dec_return(v) (__atomic64_add_return( -1,(v)))




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