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[128.93.83.213]) by smtp.googlemail.com with ESMTPSA id ffacd0b85a97d-4376686130csm15122697f8f.1.2026.02.09.07.19.38 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 09 Feb 2026 07:19:38 -0800 (PST) From: Thomas Fourier To: Cc: Thomas Fourier , stable@vger.kernel.org, Felix Fietkau , Sean Wang , Lorenzo Bianconi , Andrew Lunn , "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Matthias Brugger , AngeloGioacchino Del Regno , Sujuan Chen , 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 Message-ID: <20260209151822.136934-2-fourier.thomas@gmail.com> X-Mailer: git-send-email 2.43.0 Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 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: Signed-off-by: Thomas Fourier --- 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