From patchwork Fri Aug 30 10:17:16 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Chenghai Huang X-Patchwork-Id: 824712 Received: from szxga01-in.huawei.com (szxga01-in.huawei.com [45.249.212.187]) (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 1E59E18A923; Fri, 30 Aug 2024 10:17:22 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=45.249.212.187 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1725013045; cv=none; b=l3m76qIM57IIxdfBrvedYU5vXggJaptKREAf4/sijfX/6D3KN85PsMjNC4lmSNhG5m7o4Cr93e+YckDOVoZXaReR7gllNR4+ySzbSHB15DPiZxZLxtUQzRchFIGBiK8Q8UqOpTUn9gWT+BZkmdC8jlHyECSKZ0gCdbyOuuHkRb0= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1725013045; c=relaxed/simple; bh=0fpt+F1HkoUjAUkkTMbSUv5gB0LXIpjobV5Bt4tCNMA=; h=From:To:CC:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=tHlBQig+w9jsil3ikRIolycvwyWR48a/Y1UOuNrzg2be4xjrJ0cb5HoGTY+tRSgdLRzRpCCSHbUL01no/nc2P2ykHpZ0AB74/NDsz0ulUCP+173zvlR0XYuab49Cd6ciUMQ8O0F+B6RqS2U+88Udjey9Fsn5qqNPbajKet1AT3s= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=huawei.com; spf=pass smtp.mailfrom=huawei.com; arc=none smtp.client-ip=45.249.212.187 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=huawei.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=huawei.com Received: from mail.maildlp.com (unknown [172.19.163.252]) by szxga01-in.huawei.com (SkyGuard) with ESMTP id 4WwDZj4q4PzyQr6; Fri, 30 Aug 2024 18:16:29 +0800 (CST) Received: from kwepemd200024.china.huawei.com (unknown [7.221.188.85]) by mail.maildlp.com (Postfix) with ESMTPS id B6528180AE6; Fri, 30 Aug 2024 18:17:20 +0800 (CST) Received: from localhost.huawei.com (10.90.30.45) by kwepemd200024.china.huawei.com (7.221.188.85) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1544.11; Fri, 30 Aug 2024 18:17:20 +0800 From: Chenghai Huang To: , CC: , , , , , , , , , , Subject: [PATCH 1/3] crypto: hisilicon - fix missed error branch Date: Fri, 30 Aug 2024 18:17:16 +0800 Message-ID: <20240830101718.3193159-2-huangchenghai2@huawei.com> X-Mailer: git-send-email 2.33.0 In-Reply-To: <20240830101718.3193159-1-huangchenghai2@huawei.com> References: <20240830101718.3193159-1-huangchenghai2@huawei.com> Precedence: bulk X-Mailing-List: linux-crypto@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-ClientProxiedBy: dggems702-chm.china.huawei.com (10.3.19.179) To kwepemd200024.china.huawei.com (7.221.188.85) From: Yang Shen If an error occurs in the process after the SGL is mapped successfully, it need to unmap the SGL. Otherwise, memory problems may occur. Signed-off-by: Yang Shen --- drivers/crypto/hisilicon/sgl.c | 14 ++++++++++---- 1 file changed, 10 insertions(+), 4 deletions(-) diff --git a/drivers/crypto/hisilicon/sgl.c b/drivers/crypto/hisilicon/sgl.c index 568acd0aee3f..c974f95cd126 100644 --- a/drivers/crypto/hisilicon/sgl.c +++ b/drivers/crypto/hisilicon/sgl.c @@ -225,7 +225,7 @@ hisi_acc_sg_buf_map_to_hw_sgl(struct device *dev, dma_addr_t curr_sgl_dma = 0; struct acc_hw_sge *curr_hw_sge; struct scatterlist *sg; - int sg_n; + int sg_n, ret; if (!dev || !sgl || !pool || !hw_sgl_dma || index >= pool->count) return ERR_PTR(-EINVAL); @@ -240,14 +240,15 @@ hisi_acc_sg_buf_map_to_hw_sgl(struct device *dev, if (sg_n_mapped > pool->sge_nr) { dev_err(dev, "the number of entries in input scatterlist is bigger than SGL pool setting.\n"); - return ERR_PTR(-EINVAL); + ret = -EINVAL; + goto err_unmap; } curr_hw_sgl = acc_get_sgl(pool, index, &curr_sgl_dma); if (IS_ERR(curr_hw_sgl)) { dev_err(dev, "Get SGL error!\n"); - dma_unmap_sg(dev, sgl, sg_n, DMA_BIDIRECTIONAL); - return ERR_PTR(-ENOMEM); + ret = -ENOMEM; + goto err_unmap; } curr_hw_sgl->entry_length_in_sgl = cpu_to_le16(pool->sge_nr); curr_hw_sge = curr_hw_sgl->sge_entries; @@ -262,6 +263,11 @@ hisi_acc_sg_buf_map_to_hw_sgl(struct device *dev, *hw_sgl_dma = curr_sgl_dma; return curr_hw_sgl; + +err_unmap: + dma_unmap_sg(dev, sgl, sg_n, DMA_BIDIRECTIONAL); + + return ERR_PTR(ret); } EXPORT_SYMBOL_GPL(hisi_acc_sg_buf_map_to_hw_sgl);