From: Thomas Fourier <fourier.thomas@gmail.com>
Cc: Thomas Fourier <fourier.thomas@gmail.com>,
Chas Williams <3chas3@gmail.com>,
linux-atm-general@lists.sourceforge.net (moderated list:ATM),
netdev@vger.kernel.org (open list:ATM),
linux-kernel@vger.kernel.org (open list)
Subject: [PATCH] atm: idt77252: Add missing `dma_map_error()`
Date: Thu, 19 Jun 2025 12:57:06 +0200 [thread overview]
Message-ID: <20250619105707.320393-2-fourier.thomas@gmail.com> (raw)
The DMA map functions can fail and should be tested for errors.
Signed-off-by: Thomas Fourier <fourier.thomas@gmail.com>
---
drivers/atm/idt77252.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/drivers/atm/idt77252.c b/drivers/atm/idt77252.c
index 1206ab764ba9..4217586a82d6 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 outfree;
IDT77252_PRV_PADDR(skb) = paddr;
if (push_rx_skb(card, skb, queue)) {
--
2.43.0
next reply other threads:[~2025-06-19 10:57 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-06-19 10:57 Thomas Fourier [this message]
2025-06-23 23:40 ` [PATCH] atm: idt77252: Add missing `dma_map_error()` Jakub Kicinski
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