From: Karthikeyan Periyasamy <quic_periyasa@quicinc.com>
To: <ath11k@lists.infradead.org>
Cc: <linux-wireless@vger.kernel.org>,
Karthikeyan Periyasamy <quic_periyasa@quicinc.com>
Subject: [PATCH] ath11k: fix DMA memory free in CE pipe cleanup
Date: Wed, 10 Nov 2021 21:51:30 +0530 [thread overview]
Message-ID: <1636561290-18966-1-git-send-email-quic_periyasa@quicinc.com> (raw)
In CE pipe cleanup, DMA memory gets freed by the aligned address
(base_addr_owner_space) which is wrong. It needs to be freed
by the address (base_addr_owner_space_unaligned) returned by
dma_alloc. So free the dma memory by the proper address.
This was found in code review.
Tested-on: IPQ8074 hw2.0 AHB WLAN.HK.2.5.0.1-00729-QCAHKSWPL_SILICONZ-3 v2
Signed-off-by: Karthikeyan Periyasamy <quic_periyasa@quicinc.com>
---
drivers/net/wireless/ath/ath11k/ce.c | 16 ++++++++++------
1 file changed, 10 insertions(+), 6 deletions(-)
diff --git a/drivers/net/wireless/ath/ath11k/ce.c b/drivers/net/wireless/ath/ath11k/ce.c
index de8b632..4249c2e 100644
--- a/drivers/net/wireless/ath/ath11k/ce.c
+++ b/drivers/net/wireless/ath/ath11k/ce.c
@@ -953,6 +953,7 @@ int ath11k_ce_init_pipes(struct ath11k_base *ab)
void ath11k_ce_free_pipes(struct ath11k_base *ab)
{
struct ath11k_ce_pipe *pipe;
+ struct ath11k_ce_ring *ce_ring;
int desc_sz;
int i;
@@ -964,22 +965,24 @@ void ath11k_ce_free_pipes(struct ath11k_base *ab)
if (pipe->src_ring) {
desc_sz = ath11k_hal_ce_get_desc_size(HAL_CE_DESC_SRC);
+ ce_ring = pipe->src_ring;
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);
+ ce_ring->base_addr_owner_space_unaligned,
+ ce_ring->base_addr_ce_space_unaligned);
kfree(pipe->src_ring);
pipe->src_ring = NULL;
}
if (pipe->dest_ring) {
desc_sz = ath11k_hal_ce_get_desc_size(HAL_CE_DESC_DST);
+ ce_ring = pipe->dest_ring;
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);
+ ce_ring->base_addr_owner_space_unaligned,
+ ce_ring->base_addr_ce_space_unaligned);
kfree(pipe->dest_ring);
pipe->dest_ring = NULL;
}
@@ -987,11 +990,12 @@ void ath11k_ce_free_pipes(struct ath11k_base *ab)
if (pipe->status_ring) {
desc_sz =
ath11k_hal_ce_get_desc_size(HAL_CE_DESC_DST_STATUS);
+ ce_ring = pipe->status_ring;
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);
+ ce_ring->base_addr_owner_space_unaligned,
+ ce_ring->base_addr_ce_space_unaligned);
kfree(pipe->status_ring);
pipe->status_ring = NULL;
}
--
2.7.4
--
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next reply other threads:[~2021-11-10 16:21 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-11-10 16:21 Karthikeyan Periyasamy [this message]
2021-11-15 9:18 ` [PATCH] ath11k: fix DMA memory free in CE pipe cleanup Kalle Valo
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