From 05da1694a16239ee4ec8862a9c79465b6452b6a5 Mon Sep 17 00:00:00 2001 From: Stefan Lankes Date: Tue, 28 Jun 2016 13:50:05 +0200 Subject: [PATCH] add store barrier to avoid consistency problems --- hermit/drivers/net/mmnif.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/hermit/drivers/net/mmnif.c b/hermit/drivers/net/mmnif.c index 316f091ed..a0a60c473 100644 --- a/hermit/drivers/net/mmnif.c +++ b/hermit/drivers/net/mmnif.c @@ -403,6 +403,9 @@ static int mmnif_commit_packet(uint8_t dest, uint32_t addr) volatile mm_rx_buffer_t *rb = (mm_rx_buffer_t *) ((char *)header_start_address + (dest - 1) * header_size); uint32_t i; + // be sure that the packet has been written + wmb(); + for (i = 0; i < MMNIF_MAX_DESCRIPTORS; i++) { if (rb->desc_table[i].addr == addr