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mwl8k: Add missing check after DMA map

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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>
This commit is contained in:
Thomas Fourier 2025-07-09 13:13:34 +02:00 committed by Johannes Berg
parent 1772e571b3
commit 50459501b9
1 changed files with 4 additions and 0 deletions
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4
drivers/net/wireless/marvell/mwl8k.c
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@ -1227,6 +1227,10 @@ static int rxq_refill(struct ieee80211_hw *hw, int index, int limit)
addr = dma_map_single(&priv->pdev->dev, 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++;