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| author | Daniel Mack <daniel@zonque.org> | 2018-04-03 18:51:52 +0200 |
|---|---|---|
| committer | Kalle Valo <kvalo@codeaurora.org> | 2018-04-10 17:34:08 +0300 |
| commit | 7cae35199bee1cd661926f2d68ac46d07682fc54 (patch) | |
| tree | 6494aa5fcfc9968521a5d6d25c7c98116fc8a850 | |
| parent | 9c27489a34548913baaaf3b2776e05d4a9389e3e (diff) | |
| download | linux-0-day-7cae35199bee1cd661926f2d68ac46d07682fc54.tar.gz linux-0-day-7cae35199bee1cd661926f2d68ac46d07682fc54.tar.xz | |
wcn36xx: check for DMA mapping errors in wcn36xx_dxe_tx_frame()
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@zonque.org>
Acked-by: Ramon Fried <rfried@codeaurora.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
| -rw-r--r-- | drivers/net/wireless/ath/wcn36xx/dxe.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/net/wireless/ath/wcn36xx/dxe.c b/drivers/net/wireless/ath/wcn36xx/dxe.c index 2c3b899a88fad..405d350f87082 100644 --- a/drivers/net/wireless/ath/wcn36xx/dxe.c +++ b/drivers/net/wireless/ath/wcn36xx/dxe.c @@ -705,6 +705,11 @@ 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; |