From: Thomas Fourier <fourier.thomas@gmail.com>
Cc: Thomas Fourier <fourier.thomas@gmail.com>,
stable@vger.kernel.org, Felix Fietkau <nbd@nbd.name>,
Sean Wang <sean.wang@mediatek.com>,
Lorenzo Bianconi <lorenzo@kernel.org>,
Andrew Lunn <andrew+netdev@lunn.ch>,
"David S. Miller" <davem@davemloft.net>,
Eric Dumazet <edumazet@google.com>,
Jakub Kicinski <kuba@kernel.org>, Paolo Abeni <pabeni@redhat.com>,
Matthias Brugger <matthias.bgg@gmail.com>,
AngeloGioacchino Del Regno
<angelogioacchino.delregno@collabora.com>,
Sujuan Chen <sujuan.chen@mediatek.com>,
netdev@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-arm-kernel@lists.infradead.org,
linux-mediatek@lists.infradead.org
Subject: [PATCH net] net: mtk: wed: Fix dma_free_coherent() size mtk_wed_hwrro_free_buffer()
Date: Mon, 9 Feb 2026 16:18:21 +0100 [thread overview]
Message-ID: <20260209151822.136934-2-fourier.thomas@gmail.com> (raw)
The DMA buffer alloc'd in mtk_wed_hwrro_buffer_alloc() with size
dev->wlan.rx_nbuf but is freed with size dev->hw_rro.size.
Change the dealloc size to match the one used in
mtk_wed_hwrro_buffer_alloc().
Fixes: 6757d345dd7d ("net: ethernet: mtk_wed: introduce hw_rro support for MT7988")
Cc: <stable@vger.kernel.org>
Signed-off-by: Thomas Fourier <fourier.thomas@gmail.com>
---
drivers/net/ethernet/mediatek/mtk_wed.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/net/ethernet/mediatek/mtk_wed.c b/drivers/net/ethernet/mediatek/mtk_wed.c
index 1ed1f88dd7f8..455df564174d 100644
--- a/drivers/net/ethernet/mediatek/mtk_wed.c
+++ b/drivers/net/ethernet/mediatek/mtk_wed.c
@@ -879,7 +879,7 @@ mtk_wed_hwrro_free_buffer(struct mtk_wed_device *dev)
__free_page(page);
}
- dma_free_coherent(dev->hw->dev, dev->hw_rro.size * sizeof(*desc),
+ dma_free_coherent(dev->hw->dev, dev->wlan.rx_nbuf * sizeof(*desc),
desc, dev->hw_rro.desc_phys);
free_pagelist:
--
2.43.0
next reply other threads:[~2026-02-09 15:19 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-02-09 15:18 Thomas Fourier [this message]
2026-02-10 9:01 ` [PATCH net] net: mtk: wed: Fix dma_free_coherent() size mtk_wed_hwrro_free_buffer() Lorenzo Bianconi
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