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mwl8k: Add missing check after DMA map

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[ 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: 788838ebe8 ("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>
This commit is contained in:
Thomas Fourier
2025-07-09 13:13:34 +02:00
committed by Greg Kroah-Hartman
parent 2d69fd43a4
commit b1a1c98900
1 changed files with 4 additions and 0 deletions
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4
drivers/net/wireless/marvell/mwl8k.c
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@@ -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++;