From 712a3db0b5b2c7e6380bdeb84b803bb0e0f97c15 Mon Sep 17 00:00:00 2001 From: Andy Green Date: Thu, 17 May 2018 21:49:17 +0800 Subject: [PATCH] ring: remove useless variables There were warnings with GCC 8.1: In function '__rte_ring_move_prod_head': rte_ring_generic.h:76:3: warning: ISO C90 forbids mixed declarations and code [-Wdeclaration-after-statement] const uint32_t cons_tail = r->cons.tail; ^~~~~ In function '__rte_ring_move_cons_head': rte_ring_generic.h:147:3: warning: ISO C90 forbids mixed declarations and code [-Wdeclaration-after-statement] const uint32_t prod_tail = r->prod.tail; Fixes: 0dfc98c507b1 ("ring: separate out head index manipulation") Cc: stable@dpdk.org Signed-off-by: Andy Green Acked-by: Olivier Matz --- lib/librte_ring/rte_ring_generic.h | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-) diff --git a/lib/librte_ring/rte_ring_generic.h b/lib/librte_ring/rte_ring_generic.h index 5b110425f3..c2d482bc91 100644 --- a/lib/librte_ring/rte_ring_generic.h +++ b/lib/librte_ring/rte_ring_generic.h @@ -73,14 +73,13 @@ __rte_ring_move_prod_head(struct rte_ring *r, int is_sp, */ rte_smp_rmb(); - const uint32_t cons_tail = r->cons.tail; /* * The subtraction is done between two unsigned 32bits value * (the result is always modulo 32 bits even if we have * *old_head > cons_tail). So 'free_entries' is always between 0 * and capacity (which is < size). */ - *free_entries = (capacity + cons_tail - *old_head); + *free_entries = (capacity + r->cons.tail - *old_head); /* check that we have enough room in ring */ if (unlikely(n > *free_entries)) @@ -144,13 +143,12 @@ __rte_ring_move_cons_head(struct rte_ring *r, int is_sc, */ rte_smp_rmb(); - const uint32_t prod_tail = r->prod.tail; /* The subtraction is done between two unsigned 32bits value * (the result is always modulo 32 bits even if we have * cons_head > prod_tail). So 'entries' is always between 0 * and size(ring)-1. */ - *entries = (prod_tail - *old_head); + *entries = (r->prod.tail - *old_head); /* Set the actual entries for dequeue */ if (n > *entries) -- 2.20.1