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 <daniel@xxxxxxxxxx>
---
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
