Bail out if the mapping fails. Even though this hasn't occured during tests, this unlikely case should still be handled.
Signed-off-by: Daniel Mack <[email protected]> --- drivers/net/wireless/ath/wcn36xx/dxe.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/drivers/net/wireless/ath/wcn36xx/dxe.c b/drivers/net/wireless/ath/wcn36xx/dxe.c index 6e9a3583c447..e8ad8f989ccd 100644 --- a/drivers/net/wireless/ath/wcn36xx/dxe.c +++ b/drivers/net/wireless/ath/wcn36xx/dxe.c @@ -707,6 +707,11 @@ int wcn36xx_dxe_tx_frame(struct wcn36xx *wcn, ctl->skb->data, ctl->skb->len, DMA_TO_DEVICE); + if (dma_mapping_error(wcn->dev, desc->src_addr_l)) { + dev_err(wcn->dev, "unable to DMA map src_addr_l\n"); + ret = -ENOMEM; + goto unlock; + } desc->dst_addr_l = ch->dxe_wq; desc->fr_len = ctl->skb->len; -- 2.14.3
