[SPARC64]: Use "is_power_of_2" macro for simplicity.
Signed-off-by: Robert P. J. Day <rpjday@crashcourse.ca> Signed-off-by: David S. Miller <davem@davemloft.net>
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@ -8,6 +8,7 @@
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#include <linux/spinlock.h>
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#include <linux/spinlock.h>
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#include <linux/completion.h>
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#include <linux/completion.h>
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#include <linux/list.h>
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#include <linux/list.h>
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#include <linux/log2.h>
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#include <asm/ldc.h>
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#include <asm/ldc.h>
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#include <asm/mdesc.h>
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#include <asm/mdesc.h>
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@ -257,8 +258,7 @@ static inline void *vio_dring_entry(struct vio_dring_state *dr,
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static inline u32 vio_dring_avail(struct vio_dring_state *dr,
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static inline u32 vio_dring_avail(struct vio_dring_state *dr,
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unsigned int ring_size)
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unsigned int ring_size)
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{
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{
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/* Ensure build-time power-of-2. */
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BUILD_BUG_ON(!is_power_of_2(ring_size));
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BUILD_BUG_ON(ring_size & (ring_size - 1));
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return (dr->pending -
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return (dr->pending -
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((dr->prod - dr->cons) & (ring_size - 1)));
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((dr->prod - dr->cons) & (ring_size - 1)));
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