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gnrc_pktbuf_static: allow write-protect of size 0 snips

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Size 0 snips are legal packet snips (empty payload e.g.) so it doesn't
make sense to issue an error in the write-protection in that case.

API documentation doesn't mention it either and the tests still pass
with the check removed.
This commit is contained in:
Martine Lenders 2019-03-12 14:34:19 +01:00
parent f7cdbdaab0
commit efb658a67c
1 changed files with 1 additions and 1 deletions
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2
sys/net/gnrc/pktbuf_static/gnrc_pktbuf_static.c
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@ -249,7 +249,7 @@ void gnrc_pktbuf_release_error(gnrc_pktsnip_t *pkt, uint32_t err)
gnrc_pktsnip_t *gnrc_pktbuf_start_write(gnrc_pktsnip_t *pkt) gnrc_pktsnip_t *gnrc_pktbuf_start_write(gnrc_pktsnip_t *pkt)
{ {
mutex_lock(&_mutex); mutex_lock(&_mutex);
if ((pkt == NULL) || (pkt->size == 0)) { if (pkt == NULL) {
mutex_unlock(&_mutex); mutex_unlock(&_mutex);
return NULL; return NULL;
} }