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atm: idt77252: Add missing dma_map_error()

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[ Upstream commit c4890963350dcf4e9a909bae23665921fba4ad27 ]

The DMA map functions can fail and should be tested for errors.

Signed-off-by: Thomas Fourier <fourier.thomas@gmail.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Link: https://patch.msgid.link/20250624064148.12815-3-fourier.thomas@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Thomas Fourier 2025-06-24 08:41:47 +02:00 • committed by Greg Kroah-Hartman
commit 553017c66e
1 changed files with 5 additions and 0 deletions
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5
drivers/atm/idt77252.c
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@ -849,6 +849,8 @@ queue_skb(struct idt77252_dev *card, struct vc_map *vc,
IDT77252_PRV_PADDR(skb) = dma_map_single(&card->pcidev->dev, skb->data,
skb->len, DMA_TO_DEVICE);
if (dma_mapping_error(&card->pcidev->dev, IDT77252_PRV_PADDR(skb)))
return -ENOMEM;
error = -EINVAL;
@ -1862,6 +1864,8 @@ add_rx_skb(struct idt77252_dev *card, int queue,
paddr = dma_map_single(&card->pcidev->dev, skb->data,
skb_end_pointer(skb) - skb->data,
DMA_FROM_DEVICE);
if (dma_mapping_error(&card->pcidev->dev, paddr))
goto outpoolrm;
IDT77252_PRV_PADDR(skb) = paddr;
if (push_rx_skb(card, skb, queue)) {
@ -1876,6 +1880,7 @@ outunmap:
dma_unmap_single(&card->pcidev->dev, IDT77252_PRV_PADDR(skb),
skb_end_pointer(skb) - skb->data, DMA_FROM_DEVICE);
outpoolrm:
handle = IDT77252_PRV_POOL(skb);
card->sbpool[POOL_QUEUE(handle)].skb[POOL_INDEX(handle)] = NULL;