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authorMatt Fleming <matt@console-pimps.org>2009-01-20 21:14:38 +0000
committerPaul Mundt <lethal@linux-sh.org>2009-01-29 11:57:10 +0900
commit84fdf6cda30df72994baa2496da86787fb44cbb4 (patch)
tree808758a7b2507ea1f7ddfb07c06f3b2a41b68ed6
parent42990701f938b9318e46102d9919ceb28e5b0e6d (diff)
downloadlinux-84fdf6cda30df72994baa2496da86787fb44cbb4.tar.bz2
sh: Use the atomic_t "counter" member
Now that atomic_t is a generic opaque type for all architectures, it is unwise to use intimate knowledge of its internals when manipulating it. Instead of relying on the "counter" member being at offset 0 from the beginning of an atomic_t, explicitly reference the member. This guards us from any changes to the layout of the beginning of the atomic_t type. Signed-off-by: Matt Fleming <matt@console-pimps.org> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
-rw-r--r--arch/sh/include/asm/atomic-irq.h16
1 files changed, 8 insertions, 8 deletions
diff --git a/arch/sh/include/asm/atomic-irq.h b/arch/sh/include/asm/atomic-irq.h
index 74f7943cff6f..a0b348068cae 100644
--- a/arch/sh/include/asm/atomic-irq.h
+++ b/arch/sh/include/asm/atomic-irq.h
@@ -11,7 +11,7 @@ static inline void atomic_add(int i, atomic_t *v)
unsigned long flags;
local_irq_save(flags);
- *(long *)v += i;
+ v->counter += i;
local_irq_restore(flags);
}
@@ -20,7 +20,7 @@ static inline void atomic_sub(int i, atomic_t *v)
unsigned long flags;
local_irq_save(flags);
- *(long *)v -= i;
+ v->counter -= i;
local_irq_restore(flags);
}
@@ -29,9 +29,9 @@ static inline int atomic_add_return(int i, atomic_t *v)
unsigned long temp, flags;
local_irq_save(flags);
- temp = *(long *)v;
+ temp = v->counter;
temp += i;
- *(long *)v = temp;
+ v->counter = temp;
local_irq_restore(flags);
return temp;
@@ -42,9 +42,9 @@ static inline int atomic_sub_return(int i, atomic_t *v)
unsigned long temp, flags;
local_irq_save(flags);
- temp = *(long *)v;
+ temp = v->counter;
temp -= i;
- *(long *)v = temp;
+ v->counter = temp;
local_irq_restore(flags);
return temp;
@@ -55,7 +55,7 @@ static inline void atomic_clear_mask(unsigned int mask, atomic_t *v)
unsigned long flags;
local_irq_save(flags);
- *(long *)v &= ~mask;
+ v->counter &= ~mask;
local_irq_restore(flags);
}
@@ -64,7 +64,7 @@ static inline void atomic_set_mask(unsigned int mask, atomic_t *v)
unsigned long flags;
local_irq_save(flags);
- *(long *)v |= mask;
+ v->counter |= mask;
local_irq_restore(flags);
}