From patchwork Mon Dec 20 07:31:08 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jiasheng Jiang X-Patchwork-Id: 526290 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 9C760C433EF for ; Mon, 20 Dec 2021 07:31:33 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234349AbhLTHbc (ORCPT ); Mon, 20 Dec 2021 02:31:32 -0500 Received: from smtp23.cstnet.cn ([159.226.251.23]:50578 "EHLO cstnet.cn" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S230480AbhLTHba (ORCPT ); Mon, 20 Dec 2021 02:31:30 -0500 Received: from localhost.localdomain (unknown [124.16.138.126]) by APP-03 (Coremail) with SMTP id rQCowABHT1s+McBhiVfsAw--.16401S2; Mon, 20 Dec 2021 15:31:10 +0800 (CST) From: Jiasheng Jiang To: hminas@synopsys.com, gregkh@linuxfoundation.org, linux-usb@vger.kernel.org, linux-kernel@vger.kernel.org Cc: Jiasheng Jiang Subject: [PATCH] usb: dwc2: Check for null res pointer Date: Mon, 20 Dec 2021 15:31:08 +0800 Message-Id: <20211220073108.860268-1-jiasheng@iscas.ac.cn> X-Mailer: git-send-email 2.25.1 MIME-Version: 1.0 X-CM-TRANSID: rQCowABHT1s+McBhiVfsAw--.16401S2 X-Coremail-Antispam: 1UD129KBjvdXoWrKrW5CF1fXFWfWFy7Aw1fZwb_yoW3CrcEqa n5Ww4xGrWqkFyqkrWqyr1ayryFkFn7Ww1fWFn5trW3Kay7XF17Jryj9F4fCry3C34ayF9r Ja9rGrnrur1I9jkaLaAFLSUrUUUUUb8apTn2vfkv8UJUUUU8Yxn0WfASr-VFAUDa7-sFnT 9fnUUIcSsGvfJTRUUUbckFF20E14v26r1j6r4UM7CY07I20VC2zVCF04k26cxKx2IYs7xG 6rWj6s0DM7CIcVAFz4kK6r1j6r18M28lY4IEw2IIxxk0rwA2F7IY1VAKz4vEj48ve4kI8w A2z4x0Y4vE2Ix0cI8IcVAFwI0_Xr0_Ar1l84ACjcxK6xIIjxv20xvEc7CjxVAFwI0_Cr0_ Gr1UM28EF7xvwVC2z280aVAFwI0_GcCE3s1l84ACjcxK6I8E87Iv6xkF7I0E14v26rxl6s 0DM2AIxVAIcxkEcVAq07x20xvEncxIr21l5I8CrVACY4xI64kE6c02F40Ex7xfMcIj6xII jxv20xvE14v26r1j6r18McIj6I8E87Iv67AKxVWUJVW8JwAm72CE4IkC6x0Yz7v_Jr0_Gr 1lF7xvr2IYc2Ij64vIr41lF7I21c0EjII2zVCS5cI20VAGYxC7MxkIecxEwVAFwVW8CwCF 04k20xvY0x0EwIxGrwCFx2IqxVCFs4IE7xkEbVWUJVW8JwC20s026c02F40E14v26r1j6r 18MI8I3I0E7480Y4vE14v26r106r1rMI8E67AF67kF1VAFwI0_JF0_Jw1lIxkGc2Ij64vI r41lIxAIcVC0I7IYx2IY67AKxVWUJVWUCwCI42IY6xIIjxv20xvEc7CjxVAFwI0_Jr0_Gr 1lIxAIcVCF04k26cxKx2IYs7xG6rWUJVWrZr1UMIIF0xvEx4A2jsIE14v26r1j6r4UMIIF 0xvEx4A2jsIEc7CjxVAFwI0_Gr0_Gr1UYxBIdaVFxhVjvjDU0xZFpf9x0JUh4SOUUUUU= X-Originating-IP: [124.16.138.126] X-CM-SenderInfo: pmld2xxhqjqxpvfd2hldfou0/ Precedence: bulk List-ID: X-Mailing-List: linux-usb@vger.kernel.org The return value of platform_get_resource() needs to be checked. To avoid use of error pointer in case of the failure of alloc. Fixes: 348becdcc319 ("usb: dwc2: fix "iomem 0x00000000" message") Signed-off-by: Jiasheng Jiang --- drivers/usb/dwc2/hcd.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/drivers/usb/dwc2/hcd.c b/drivers/usb/dwc2/hcd.c index 2a7828971d05..517743555b9c 100644 --- a/drivers/usb/dwc2/hcd.c +++ b/drivers/usb/dwc2/hcd.c @@ -5191,6 +5191,11 @@ int dwc2_hcd_init(struct dwc2_hsotg *hsotg) hcd->has_tt = 1; res = platform_get_resource(pdev, IORESOURCE_MEM, 0); + if (!res) { + retval = -EINVAL; + goto error1; + } + hcd->rsrc_start = res->start; hcd->rsrc_len = resource_size(res);