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| author | Thomas Fourier <fourier.thomas@gmail.com> | 2025-06-24 09:41:47 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2025-07-17 19:35:20 +0300 |
| commit | 8cafaba2f27581044482ee032cb47e280c828fd8 (patch) | |
| tree | 0946626fbcb703078848c889ba57e1c69e97c733 /drivers/atm | |
| parent | 0d8a9b6dd32175a0d28301498025b0305bf07d7d (diff) | |
| download | linux-8cafaba2f27581044482ee032cb47e280c828fd8.tar.xz | |
atm: idt77252: Add missing `dma_map_error()`
[ 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>
Diffstat (limited to 'drivers/atm')
| -rw-r--r-- | drivers/atm/idt77252.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/atm/idt77252.c b/drivers/atm/idt77252.c index a876024d8a05..63d41320cd5c 100644 --- a/drivers/atm/idt77252.c +++ b/drivers/atm/idt77252.c @@ -852,6 +852,8 @@ 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; @@ -1857,6 +1859,8 @@ 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)) { @@ -1871,6 +1875,7 @@ 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; |