net: dlink: handle dma_map_single() failure properly

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[ Upstream commit 65946eac6d ]

There is no error handling for `dma_map_single()` failures.

Add error handling by checking `dma_mapping_error()` and freeing
the `skb` using `dev_kfree_skb()` (process context) when it fails.

Fixes: 1da177e4c3 ("Linux-2.6.12-rc2")
Signed-off-by: Yeounsu Moon <yyyynoom@gmail.com>
Tested-on: D-Link DGE-550T Rev-A3
Suggested-by: Simon Horman <horms@kernel.org>
Reviewed-by: Simon Horman <horms@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>

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Yeounsu Moon 2025-10-10 00:57:16 +09:00 • committed by Greg Kroah-Hartman

parent cafe9fd062

commit 61af1b2a7d

1 changed files with 16 additions and 7 deletions

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drivers/net/ethernet/dlink/dl2k.c

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