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Commit 7cae3519 authored by Daniel Mack's avatar Daniel Mack Committed by Kalle Valo
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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: default avatarDaniel Mack <daniel@zonque.org>
Acked-by: default avatarRamon Fried <rfried@codeaurora.org>
Signed-off-by: default avatarKalle Valo <kvalo@codeaurora.org>
parent 9c27489a

drivers/net/wireless/ath/wcn36xx/dxe.c

+5 −0
Original line number Original line Diff line number Diff line
@@ -705,6 +705,11 @@ int wcn36xx_dxe_tx_frame(struct wcn36xx *wcn, 
					  ctl->skb->data,

					  ctl->skb->data,

					  ctl->skb->len,

					  ctl->skb->len,

					  DMA_TO_DEVICE);

					  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->dst_addr_l = ch->dxe_wq;

	desc->fr_len = ctl->skb->len;

	desc->fr_len = ctl->skb->len;