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Nanostack EMAC - avoid initialisation race 

Hard fault was possible if packet reception occurred during
initialisation. Adjust start-up ordering and add NULL check to
avoid.
pull/7228/head
Kevin Bracey 2018-06-05 16:58:22 +03:00 committed by adbridge
parent b2a6e94cd8
commit cfed8228eb
1 changed files with 13 additions and 12 deletions
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25
features/nanostack/mbed-mesh-api/source/NanostackEMACInterface.cpp
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@ -88,7 +88,7 @@ void EMACPhy::emac_phy_rx(emac_mem_buf_t *mem)
}
}
if (ptr) {
if (ptr && phy.phy_rx_cb) {
phy.phy_rx_cb(ptr, total_len, 0xff, 0, device_id);
}
ns_dyn_mem_free(tmpbuf);
@ -125,6 +125,18 @@ int8_t EMACPhy::phy_register()
{
if (device_id < 0) {
phy.PHY_MAC = mac_addr;
phy.address_write = emac_phy_address_write;
phy.driver_description = const_cast<char*>("ETH");
phy.link_type = PHY_LINK_ETHERNET_TYPE;
phy.phy_MTU = 0;
phy.phy_header_length = 0;
phy.phy_tail_length = 0;
phy.state_control = emac_phy_interface_state_control;
phy.tx = emac_phy_tx;
phy.phy_rx_cb = NULL;
phy.phy_tx_done_cb = NULL;
emac.set_memory_manager(memory_manager);
emac.set_link_input_cb(callback(this, &EMACPhy::emac_phy_rx));
@ -141,17 +153,6 @@ int8_t EMACPhy::phy_register()
emac.set_all_multicast(true);
phy.PHY_MAC = mac_addr;
phy.address_write = emac_phy_address_write;
phy.driver_description = const_cast<char*>("ETH");
phy.link_type = PHY_LINK_ETHERNET_TYPE;
phy.phy_MTU = 0;
phy.phy_header_length = 0;
phy.phy_tail_length = 0;
phy.state_control = emac_phy_interface_state_control;
phy.tx = emac_phy_tx;
phy.phy_rx_cb = NULL;
phy.phy_tx_done_cb = NULL;
device_id = arm_net_phy_register(&phy);
// driver_readiness_status_callback = driver_status_cb;