[PATCH net] wifi: ath12k: fix dma_free_coherent() pointer
Thomas Fourier
fourier.thomas at gmail.com
Tue Jan 6 00:49:04 PST 2026
dma_alloc_coherent() allocates a DMA mapped buffer and stores the
addresses in XXX_unaligned fields. Those should be reused when freeing
the buffer rather than the aligned addresses.
Fixes: d889913205cf ("wifi: ath12k: driver for Qualcomm Wi-Fi 7 devices")
Cc: <stable at vger.kernel.org>
Signed-off-by: Thomas Fourier <fourier.thomas at gmail.com>
---
drivers/net/wireless/ath/ath12k/ce.c | 12 ++++++------
1 file changed, 6 insertions(+), 6 deletions(-)
diff --git a/drivers/net/wireless/ath/ath12k/ce.c b/drivers/net/wireless/ath/ath12k/ce.c
index 9a63608838ac..4aea58446838 100644
--- a/drivers/net/wireless/ath/ath12k/ce.c
+++ b/drivers/net/wireless/ath/ath12k/ce.c
@@ -984,8 +984,8 @@ void ath12k_ce_free_pipes(struct ath12k_base *ab)
dma_free_coherent(ab->dev,
pipe->src_ring->nentries * desc_sz +
CE_DESC_RING_ALIGN,
- pipe->src_ring->base_addr_owner_space,
- pipe->src_ring->base_addr_ce_space);
+ pipe->src_ring->base_addr_owner_space_unaligned,
+ pipe->src_ring->base_addr_ce_space_unaligned);
kfree(pipe->src_ring);
pipe->src_ring = NULL;
}
@@ -995,8 +995,8 @@ void ath12k_ce_free_pipes(struct ath12k_base *ab)
dma_free_coherent(ab->dev,
pipe->dest_ring->nentries * desc_sz +
CE_DESC_RING_ALIGN,
- pipe->dest_ring->base_addr_owner_space,
- pipe->dest_ring->base_addr_ce_space);
+ pipe->dest_ring->base_addr_owner_space_unaligned,
+ pipe->dest_ring->base_addr_ce_space_unaligned);
kfree(pipe->dest_ring);
pipe->dest_ring = NULL;
}
@@ -1007,8 +1007,8 @@ void ath12k_ce_free_pipes(struct ath12k_base *ab)
dma_free_coherent(ab->dev,
pipe->status_ring->nentries * desc_sz +
CE_DESC_RING_ALIGN,
- pipe->status_ring->base_addr_owner_space,
- pipe->status_ring->base_addr_ce_space);
+ pipe->status_ring->base_addr_owner_space_unaligned,
+ pipe->status_ring->base_addr_ce_space_unaligned);
kfree(pipe->status_ring);
pipe->status_ring = NULL;
}
--
2.43.0
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