From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 841D1430BA3; Sun, 1 Mar 2026 01:55:29 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1772330129; cv=none; b=d/aTL56f35IoleUKhRTG2GmAEuYmdl1a4i7iApLL6YkvgTukLK+ru+0jWRk9vwnovih8DOXru+hJm9vc+Ea+yo/UyG/2nnf4UMgKSh/GbBUA9k/QWdNC+1bgBmHqKBov/6JBBpg7FPWdAe84iGPxbHLSxiw7VRvsO3rd4dYTbaM= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1772330129; c=relaxed/simple; bh=iRc7NPY+3aw9BU8UG95dnIYKZF3Ie7BM0RzBb8KyPAE=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=GWmwDStRHcQzm/xcGm7VqpUO0UyQcYF3CxZBLx8AEWLbOfVmbKlwSXDZdMpMkiNRh9xR0S5HoTBrpqCnu5nHzo1dB79EPMxo3kZSF4NobFO4QvtRn3PiXtu9qBzs266jw9HxQHkRN6jpbxtPQO+aurA5YqHettRT6rO23NIA/EU= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=an4e6LUV; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="an4e6LUV" Received: by smtp.kernel.org (Postfix) with ESMTPSA id BC5E5C19421; Sun, 1 Mar 2026 01:55:28 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1772330129; bh=iRc7NPY+3aw9BU8UG95dnIYKZF3Ie7BM0RzBb8KyPAE=; h=From:To:Cc:Subject:Date:From; b=an4e6LUVzESXt5XqGzNkyTwYp15W5tbFbS8SHJwCVj8nhJ0gBjJ1Onwd0D0d/TxqP /Kc2nAnki/Ni0IjCFgqG+/XKBVYj1RRHvsO2eHUgLHmRmN7pcUh4TqxrSI5xCvUsXE 72jU0fMtumpu5zMgSsFpH2UYUJWKBacwaV9czzTk01eAjdQtB9YT52E7REFeJPNRUd zv4x0ha1qIvtFh62aEPPyaRQRTYBbO45dmj9h8yq+21Ghq1Q3aYaf6lwD2lKAqPKfR 4XadMwgCsn+pzPZLZUo3xbXYCo/0i/DeYwnsxIWQ3wz6c/TvZ4UJh9u2e21s5YIJ4o RngyZLXcTMDWQ== From: Sasha Levin To: stable@vger.kernel.org, fourier.thomas@gmail.com Cc: "Christophe Leroy (CS GROUP)" , Paolo Abeni , netdev@vger.kernel.org, linuxppc-dev@lists.ozlabs.org Subject: FAILED: Patch "net: wan/fsl_ucc_hdlc: Fix dma_free_coherent() in uhdlc_memclean()" failed to apply to 5.15-stable tree Date: Sat, 28 Feb 2026 20:55:27 -0500 Message-ID: <20260301015527.1722681-1-sashal@kernel.org> X-Mailer: git-send-email 2.51.0 Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Patchwork-Hint: ignore X-stable: review Content-Transfer-Encoding: 8bit The patch below does not apply to the 5.15-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to . Thanks, Sasha ------------------ original commit in Linus's tree ------------------ >From 36bd7d5deef936c4e1e3cd341598140e5c14c1d3 Mon Sep 17 00:00:00 2001 From: Thomas Fourier Date: Fri, 6 Feb 2026 09:53:33 +0100 Subject: [PATCH] net: wan/fsl_ucc_hdlc: Fix dma_free_coherent() in uhdlc_memclean() The priv->rx_buffer and priv->tx_buffer are alloc'd together as contiguous buffers in uhdlc_init() but freed as two buffers in uhdlc_memclean(). Change the cleanup to only call dma_free_coherent() once on the whole buffer. Reviewed-by: Christophe Leroy (CS GROUP) Fixes: c19b6d246a35 ("drivers/net: support hdlc function for QE-UCC") Cc: Signed-off-by: Thomas Fourier Link: https://patch.msgid.link/20260206085334.21195-2-fourier.thomas@gmail.com Signed-off-by: Paolo Abeni --- drivers/net/wan/fsl_ucc_hdlc.c | 8 ++------ 1 file changed, 2 insertions(+), 6 deletions(-) diff --git a/drivers/net/wan/fsl_ucc_hdlc.c b/drivers/net/wan/fsl_ucc_hdlc.c index f999798a56127..dff84731343cc 100644 --- a/drivers/net/wan/fsl_ucc_hdlc.c +++ b/drivers/net/wan/fsl_ucc_hdlc.c @@ -790,18 +790,14 @@ static void uhdlc_memclean(struct ucc_hdlc_private *priv) if (priv->rx_buffer) { dma_free_coherent(priv->dev, - RX_BD_RING_LEN * MAX_RX_BUF_LENGTH, + (RX_BD_RING_LEN + TX_BD_RING_LEN) * MAX_RX_BUF_LENGTH, priv->rx_buffer, priv->dma_rx_addr); priv->rx_buffer = NULL; priv->dma_rx_addr = 0; - } - if (priv->tx_buffer) { - dma_free_coherent(priv->dev, - TX_BD_RING_LEN * MAX_RX_BUF_LENGTH, - priv->tx_buffer, priv->dma_tx_addr); priv->tx_buffer = NULL; priv->dma_tx_addr = 0; + } } -- 2.51.0