5.4-stable review patch. If anyone has any objections, please let me know.
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From: Thomas Fourier fourier.thomas@gmail.com
[ Upstream commit 50459501b9a212dbe7a673727589ee105a8a9954 ]
The DMA map functions can fail and should be tested for errors. If the mapping fails, unmap and return an error.
Fixes: 788838ebe8a4 ("mwl8k: use pci_unmap_addr{,set}() to keep track of unmap addresses on rx") Signed-off-by: Thomas Fourier fourier.thomas@gmail.com Link: https://patch.msgid.link/20250709111339.25360-2-fourier.thomas@gmail.com Signed-off-by: Johannes Berg johannes.berg@intel.com Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/net/wireless/marvell/mwl8k.c | 4 ++++ 1 file changed, 4 insertions(+)
diff --git a/drivers/net/wireless/marvell/mwl8k.c b/drivers/net/wireless/marvell/mwl8k.c index abd5c8670bc4..a0c15af1b167 100644 --- a/drivers/net/wireless/marvell/mwl8k.c +++ b/drivers/net/wireless/marvell/mwl8k.c @@ -1220,6 +1220,10 @@ static int rxq_refill(struct ieee80211_hw *hw, int index, int limit)
addr = pci_map_single(priv->pdev, skb->data, MWL8K_RX_MAXSZ, DMA_FROM_DEVICE); + if (dma_mapping_error(&priv->pdev->dev, addr)) { + kfree_skb(skb); + break; + }
rxq->rxd_count++; rx = rxq->tail++;