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net: 3com: 3c59x: fix possible null dereference in vortex_probe1()

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pdev can be null and free_ring: can be called in 1297 with a null
pdev.

Fixes: 55c82617c3e8 ("3c59x: convert to generic DMA API")
Cc: <stable@vger.kernel.org>
Signed-off-by: Thomas Fourier <fourier.thomas@gmail.com>
Link: https://patch.msgid.link/20260106094731.25819-2-fourier.thomas@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Thomas Fourier 2026-01-06 10:47:21 +01:00 committed by Jakub Kicinski
parent c1d73b1480
commit a4e305ed60
1 changed files with 1 additions and 1 deletions
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2
drivers/net/ethernet/3com/3c59x.c
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@ -1473,7 +1473,7 @@ static int vortex_probe1(struct device *gendev, void __iomem *ioaddr, int irq,
return 0; return 0;
free_ring: free_ring:
dma_free_coherent(&pdev->dev, dma_free_coherent(gendev,
sizeof(struct boom_rx_desc) * RX_RING_SIZE + sizeof(struct boom_rx_desc) * RX_RING_SIZE +
sizeof(struct boom_tx_desc) * TX_RING_SIZE, sizeof(struct boom_tx_desc) * TX_RING_SIZE,
vp->rx_ring, vp->rx_ring_dma); vp->rx_ring, vp->rx_ring_dma);