android/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

enetc: Fix NULL dma address unmap for Tx BD extensions

Browse Source 
For the unlikely case of TxBD extensions (i.e. ptp)
the driver tries to unmap the tx_swbd corresponding
to the extension, which is bogus as it has no buffer
attached.

Signed-off-by: Claudiu Manoil <claudiu.manoil@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Claudiu Manoil
2019-05-15 19:08:56 +03:00
committed by David S. Miller
parent cb07d915bf
commit f4a0be84d7
1 changed files with 3 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
drivers/net/ethernet/freescale/enetc/enetc.c
View File

@ -313,7 +313,9 @@ static bool enetc_clean_tx_ring(struct enetc_bdr *tx_ring, int napi_budget)
while (bds_to_clean && tx_frm_cnt < ENETC_DEFAULT_TX_WORK) {
bool is_eof = !!tx_swbd->skb;
enetc_unmap_tx_buff(tx_ring, tx_swbd);
if (likely(tx_swbd->dma))
enetc_unmap_tx_buff(tx_ring, tx_swbd);
if (is_eof) {
napi_consume_skb(tx_swbd->skb, napi_budget);
tx_swbd->skb = NULL;