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lowpan6.c: Fix ‘lowpan6_context_lookup’ defined but not used build warning

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Fix build warning with LWIP_6LOWPAN_NUM_CONTEXTS==0.
lowpan6_context_lookup() is only used when LWIP_6LOWPAN_IPHC &&
LWIP_6LOWPAN_NUM_CONTEXTS > 0.

Signed-off-by: Axel Lin <axel.lin@ingics.com>
This commit is contained in:
Axel Lin 2018-02-27 18:01:18 +08:00
parent 49acdae8d0
commit 2e2c607727
1 changed files with 2 additions and 6 deletions
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8
src/netif/lowpan6.c
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@ -146,11 +146,10 @@ dequeue_datagram(struct lowpan6_reass_helper *lrh)
return ERR_OK; return ERR_OK;
} }
#if LWIP_6LOWPAN_IPHC #if LWIP_6LOWPAN_IPHC && LWIP_6LOWPAN_NUM_CONTEXTS > 0
static s8_t static s8_t
lowpan6_context_lookup(const ip6_addr_t *ip6addr) lowpan6_context_lookup(const ip6_addr_t *ip6addr)
{ {
#if LWIP_6LOWPAN_NUM_CONTEXTS > 0
s8_t i; s8_t i;
for (i = 0; i < LWIP_6LOWPAN_NUM_CONTEXTS; i++) { for (i = 0; i < LWIP_6LOWPAN_NUM_CONTEXTS; i++) {
@ -158,12 +157,9 @@ lowpan6_context_lookup(const ip6_addr_t *ip6addr)
return i; return i;
} }
} }
#else
LWIP_UNUSED_ARG(ip6addr);
#endif
return -1; return -1;
} }
#endif /* LWIP_6LOWPAN_IPHC */ #endif /* LWIP_6LOWPAN_IPHC && LWIP_6LOWPAN_NUM_CONTEXTS > 0 */
#if LWIP_6LOWPAN_IPHC || LWIP_6LOWPAN_INFER_SHORT_ADDRESS #if LWIP_6LOWPAN_IPHC || LWIP_6LOWPAN_INFER_SHORT_ADDRESS
/* Determine compression mode for unicast address. */ /* Determine compression mode for unicast address. */