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net: designware: fix bus address dereference

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Device bus address might not be valid for direct access when the bus
address and CPU address are not the same. Use dev_bus_to_phys() to
translate bus address back to CPU address.

Fixes: 3d98b8c504 ("net: designware: Invalidate RX buffer cache before freeing the DMA descriptor")
Signed-off-by: Baruch Siach <baruch@tkos.co.il>
Reviewed-by: Ramon Fried <rfried.dev@gmail.com>
This commit is contained in:
Baruch Siach
2025-06-22 10:16:29 -06:00
committed by Tom Rini
parent c08cecf2d7
commit 9d169ac973
1 changed files with 1 additions and 1 deletions
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drivers/net/designware.c
+1 -1
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@@ -716,7 +716,7 @@ static int _dw_free_pkt(struct dw_eth_dev *priv)
ulong desc_start = (ulong)desc_p;
ulong desc_end = desc_start +
roundup(sizeof(*desc_p), ARCH_DMA_MINALIGN);
ulong data_start = desc_p->dmamac_addr;
ulong data_start = dev_bus_to_phys(priv->dev, desc_p->dmamac_addr);
ulong data_end = data_start + roundup(CFG_ETH_BUFSIZE, ARCH_DMA_MINALIGN);
/* Invalidate the descriptor buffer data */