From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-9.1 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 15917C282CE for ; Tue, 4 Jun 2019 10:45:14 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id E1E1B23406 for ; Tue, 4 Jun 2019 10:45:13 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=linaro.org header.i=@linaro.org header.b="hljw8RsT" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727454AbfFDKpJ (ORCPT ); Tue, 4 Jun 2019 06:45:09 -0400 Received: from mail-wr1-f67.google.com ([209.85.221.67]:33905 "EHLO mail-wr1-f67.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727472AbfFDKpI (ORCPT ); Tue, 4 Jun 2019 06:45:08 -0400 Received: by mail-wr1-f67.google.com with SMTP id e16so7022248wrn.1 for ; Tue, 04 Jun 2019 03:45:07 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references; bh=MkGVFZY1XhtlH3EXbDSeWCPiZrbaYk4zwPdOeyiIsNc=; b=hljw8RsTFEcbuplHCj6D4tq/5nIpPFTXoAK24WDaO16R2lM4A4tkIl52AnrPf6JXw1 gT3EjpICXK9lQrDnqMtsHhdKD3i45MO0tlSwTZkOGsLnygeqnS1GEq42hVT5+HlqpNGw T+gYf8t0vIU7HSEAEdNBmet5opXalvHQjYcEdfz/km30EDtQQfXPpL8nTAL5/46rMhak gMuexpRELw1yz4AqSHcBpII97mOzlQXjdBv9q9uxJg0vY4L2Wkz4mWfTGT41kUyPjWyf oCCUVzTVMMLzv8BuVscDTyHO0HMHqetsCPsptCOLxfHbS+xv6PqNZFqqiN1cTF5Ezas/ RETA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references; bh=MkGVFZY1XhtlH3EXbDSeWCPiZrbaYk4zwPdOeyiIsNc=; b=t7teihyZfsrQjC7Kd12//wFhQa/Fx4WBCyisSiwGa/1qCRMeNWUTk+OLHpECV1Qpqc +bONqegMGFygWqite93MJ/YPCvU4wxj4DE+lSXBV8tTidgbK4HiN51+dwE6UZkNC9nR1 imye/8TESbI5wVmSYeIxwrRz+ZYKA/6jALcYKxVcZ0I2U12WF4GhcO45RVSpD9SiCb5h 4civ0pgW1/Os09yDUGSh86C1ucyGICm+9Kdas8WyIH3+inUxc9wqemHbtROJOdPjDlNv l+V9YVZidmUdagNqiZ8aU8A3eDKWK1KrOdn6Xz3gxCB/zcoaB5fTCJxJLNAUZvtEBZHf I/JA== X-Gm-Message-State: APjAAAUU/ghtLnWd8s+C2dA5RtTfTHCeKHna2QS9V94OasPczZpXNn4L lh+ENdMknQT70fF/IClDnhGR+A== X-Google-Smtp-Source: APXvYqyK+bgytdW+OPwhr0ZBevMVV7NDVd58ezc6owb6wL4UOd2DK/LWci6dPsr3n48XMl5sTrJS0w== X-Received: by 2002:adf:a38d:: with SMTP id l13mr13613323wrb.187.1559645107190; Tue, 04 Jun 2019 03:45:07 -0700 (PDT) Received: from localhost.localdomain ([2.27.167.43]) by smtp.gmail.com with ESMTPSA id t140sm2718623wmt.0.2019.06.04.03.45.06 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Tue, 04 Jun 2019 03:45:06 -0700 (PDT) From: Lee Jones To: alokc@codeaurora.org, kramasub@codeaurora.org, andy.gross@linaro.org, david.brown@linaro.org, wsa+renesas@sang-engineering.com, bjorn.andersson@linaro.org, linus.walleij@linaro.org, balbi@kernel.org, gregkh@linuxfoundation.org Cc: linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, jlhugo@gmail.com, linux-i2c@vger.kernel.org, linux-arm-msm@vger.kernel.org, linux-gpio@vger.kernel.org, linux-usb@vger.kernel.org, Lee Jones Subject: [PATCH 8/8] usb: dwc3: qcom: Improve error handling Date: Tue, 4 Jun 2019 11:44:55 +0100 Message-Id: <20190604104455.8877-8-lee.jones@linaro.org> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20190604104455.8877-1-lee.jones@linaro.org> References: <20190604104455.8877-1-lee.jones@linaro.org> Sender: linux-arm-msm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org dwc3_qcom_clk_init() is called with of_count_phandle_with_args() as an argument. If of_count_phandle_with_args() returns an error, the number of clocks will be a negative value and will lead to undefined behaviour. Ensure we check for an error before attempting to blindly use the value. Signed-off-by: Lee Jones --- drivers/usb/dwc3/dwc3-qcom.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/usb/dwc3/dwc3-qcom.c b/drivers/usb/dwc3/dwc3-qcom.c index f21fdd6cdd1a..633482926497 100644 --- a/drivers/usb/dwc3/dwc3-qcom.c +++ b/drivers/usb/dwc3/dwc3-qcom.c @@ -419,6 +419,9 @@ static int dwc3_qcom_clk_init(struct dwc3_qcom *qcom, int count) if (!count || ACPI_HANDLE(dev)) return 0; + if (count < 0) + return count; + qcom->clks = devm_kcalloc(dev, qcom->num_clocks, sizeof(struct clk *), GFP_KERNEL); if (!qcom->clks) -- 2.17.1