From patchwork Thu Nov 9 02:13:08 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Chen Ni X-Patchwork-Id: 744064 Received: from lindbergh.monkeyblade.net (lindbergh.monkeyblade.net [23.128.96.19]) (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 D4DB6524D for ; Thu, 9 Nov 2023 02:13:58 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=none Received: from cstnet.cn (smtp84.cstnet.cn [159.226.251.84]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 9789E26A2; Wed, 8 Nov 2023 18:13:57 -0800 (PST) Received: from localhost (unknown [124.16.138.129]) by APP-05 (Coremail) with SMTP id zQCowAA3GA1cQExlCNVSAQ--.21340S2; Thu, 09 Nov 2023 10:13:48 +0800 (CST) From: Chen Ni To: qianweili@huawei.com, wangzhou1@hisilicon.com, herbert@gondor.apana.org.au, davem@davemloft.net, xuzaibo@huawei.com, tanshukun1@huawei.com Cc: linux-crypto@vger.kernel.org, linux-kernel@vger.kernel.org, Chen Ni Subject: [PATCH] crypto: hisilicon - Add check for pci_find_ext_capability Date: Thu, 9 Nov 2023 02:13:08 +0000 Message-Id: <20231109021308.1859881-1-nichen@iscas.ac.cn> X-Mailer: git-send-email 2.25.1 Precedence: bulk X-Mailing-List: linux-crypto@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-CM-TRANSID: zQCowAA3GA1cQExlCNVSAQ--.21340S2 X-Coremail-Antispam: 1UD129KBjvdXoWrtw1fuF4UCrWUXryrGF4xXrb_yoW3Krg_Cw 1UuFyxWryjkF1kZ3ZY939rZrWav3W3Z3WkXF40q3sIyasrZ3y3WFWxXF4DZw17Xa17Aas8 uws7Gr93A3ZrZjkaLaAFLSUrUUUUjb8apTn2vfkv8UJUUUU8Yxn0WfASr-VFAUDa7-sFnT 9fnUUIcSsGvfJTRUUUb2AFF20E14v26r4j6ryUM7CY07I20VC2zVCF04k26cxKx2IYs7xG 6rWj6s0DM7CIcVAFz4kK6r1j6r18M28lY4IEw2IIxxk0rwA2F7IY1VAKz4vEj48ve4kI8w A2z4x0Y4vE2Ix0cI8IcVAFwI0_tr0E3s1l84ACjcxK6xIIjxv20xvEc7CjxVAFwI0_Gr1j 6F4UJwA2z4x0Y4vEx4A2jsIE14v26rxl6s0DM28EF7xvwVC2z280aVCY1x0267AKxVW0oV Cq3wAS0I0E0xvYzxvE52x082IY62kv0487Mc02F40EFcxC0VAKzVAqx4xG6I80ewAv7VC0 I7IYx2IY67AKxVWUXVWUAwAv7VC2z280aVAFwI0_Gr0_Cr1lOx8S6xCaFVCjc4AY6r1j6r 4UM4x0Y48IcxkI7VAKI48JM4x0x7Aq67IIx4CEVc8vx2IErcIFxwCY02Avz4vE14v_Gr1l 42xK82IYc2Ij64vIr41l4I8I3I0E4IkC6x0Yz7v_Jr0_Gr1lx2IqxVAqx4xG67AKxVWUJV WUGwC20s026x8GjcxK67AKxVWUGVWUWwC2zVAF1VAY17CE14v26r1q6r43MIIYrxkI7VAK I48JMIIF0xvE2Ix0cI8IcVAFwI0_Jr0_JF4lIxAIcVC0I7IYx2IY6xkF7I0E14v26r1j6r 4UMIIF0xvE42xK8VAvwI8IcIk0rVWUJVWUCwCI42IY6I8E87Iv67AKxVWUJVW8JwCI42IY 6I8E87Iv6xkF7I0E14v26r1j6r4UYxBIdaVFxhVjvjDU0xZFpf9x0JUyxRDUUUUU= X-Originating-IP: [124.16.138.129] X-CM-SenderInfo: xqlfxv3q6l2u1dvotugofq/ Add check for pci_find_ext_capability() and return the error if it fails in order to transfer the error. Fixes: 6c6dd5802c2d ("crypto: hisilicon/qm - add controller reset interface") Signed-off-by: Chen Ni --- drivers/crypto/hisilicon/qm.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/crypto/hisilicon/qm.c b/drivers/crypto/hisilicon/qm.c index 18599f3634c3..adbab1286d4a 100644 --- a/drivers/crypto/hisilicon/qm.c +++ b/drivers/crypto/hisilicon/qm.c @@ -3967,6 +3967,9 @@ static int qm_set_vf_mse(struct hisi_qm *qm, bool set) int i; pos = pci_find_ext_capability(pdev, PCI_EXT_CAP_ID_SRIOV); + if (!pos) + return -ENODEV; + pci_read_config_word(pdev, pos + PCI_SRIOV_CTRL, &sriov_ctrl); if (set) sriov_ctrl |= PCI_SRIOV_CTRL_MSE;