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Add error handling for getting null tx buffer

pull/7565/head
cyliangtw 2018-07-20 18:12:42 +08:00
parent 240619745d
commit 7ea02d95a3
1 changed files with 3 additions and 1 deletions
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4
features/netsocket/emac-drivers/TARGET_NUVOTON_EMAC/numaker_emac.cpp
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@ -222,7 +222,7 @@ bool NUMAKER_EMAC::link_out(emac_mem_buf_t *buf)
{
bool result;
emac_mem_buf_t *q;
uint8_t *buffer = numaker_eth_get_tx_buf();
uint8_t *buffer = NULL;
uint32_t framelength = 0;
uint32_t bufferoffset = 0;
uint32_t byteslefttocopy = 0;
@ -230,7 +230,9 @@ bool NUMAKER_EMAC::link_out(emac_mem_buf_t *buf)
/* Get exclusive access */
TXLockMutex.lock();
buffer = numaker_eth_get_tx_buf();
NU_DEBUGF(("%s ... buffer=0x%x\r\n",__FUNCTION__, buffer));
if( buffer == NULL ) goto error;
/* copy frame from buf to driver buffers */
for (q = buf; q != NULL; q = memory_manager->get_next(q)) {