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 8156A17CA12; Mon, 10 Mar 2025 17:54:04 +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=1741629244; cv=none; b=Zn8VzN+Wcf6RYu8e11i9vH9d8b9tA3mTMxOjPwogprLczjRPofcgqZf4LlEIYxc+djIr6bwYhX9NcPKKOuv7jSRNPvz1QOwMfgfuTu4trunkDFnDYqyAjgCSOG0822gtgXszke6TU90YHIV+kIE1UzYLl08QusZGQ7hu48O6G+0= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1741629244; c=relaxed/simple; bh=y319Qc3YBRPmDvsVfyeE6MFvZALEDX1huIRr0oLvjpo=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=C1hqCKvl0TmUqVgxPo+0cdN4OQ++hU9uO2S0eh7YYw3FtszgHOTY4JA5cfOIsOJ2qE883acup7qOD2D2HTuZ5xSJCeJ6410slkiVe9cpENiNRA0D4o7RyKqLp/yT3XoRtAGE4le9Kr8+jhxa4l2XQ1353rS/Cm7/UuhXhEsZS7k= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=Hq+30Owh; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="Hq+30Owh" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 087D4C4CEE5; Mon, 10 Mar 2025 17:54:03 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1741629244; bh=y319Qc3YBRPmDvsVfyeE6MFvZALEDX1huIRr0oLvjpo=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=Hq+30OwhNhNRnK3IrWr8WDwSAEAR3SqvsQqv6240RPXEMVu3X32V/WK66g5aJUjYP fTT809n+3OvqNoDbjYlWTMRqMoNv1BaRI3aKKSr+7QhkTobX6GXOGguef4IknydvgO /hbA4Yw8Oew1gYY6j9SxbTEwdUnWaQXkMRWSedGM= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, stable , Joe Hattori , Peter Chen , Sasha Levin Subject: [PATCH 5.15 228/620] usb: chipidea: ci_hdrc_imx: decrement devices refcount in .remove() and in the error path of .probe() Date: Mon, 10 Mar 2025 18:01:14 +0100 Message-ID: <20250310170554.631794958@linuxfoundation.org> X-Mailer: git-send-email 2.48.1 In-Reply-To: <20250310170545.553361750@linuxfoundation.org> References: <20250310170545.553361750@linuxfoundation.org> User-Agent: quilt/0.68 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 5.15-stable review patch. If anyone has any objections, please let me know. ------------------ From: Joe Hattori [ Upstream commit 74adad500346fb07d69af2c79acbff4adb061134 ] Current implementation of ci_hdrc_imx_driver does not decrement the refcount of the device obtained in usbmisc_get_init_data(). Add a put_device() call in .remove() and in .probe() before returning an error. This bug was found by an experimental static analysis tool that I am developing. Cc: stable Fixes: f40017e0f332 ("chipidea: usbmisc_imx: Add USB support for VF610 SoCs") Signed-off-by: Joe Hattori Acked-by: Peter Chen Link: https://lore.kernel.org/r/20241216015539.352579-1-joe@pf.is.s.u-tokyo.ac.jp Signed-off-by: Greg Kroah-Hartman Signed-off-by: Sasha Levin --- drivers/usb/chipidea/ci_hdrc_imx.c | 25 +++++++++++++++++-------- 1 file changed, 17 insertions(+), 8 deletions(-) diff --git a/drivers/usb/chipidea/ci_hdrc_imx.c b/drivers/usb/chipidea/ci_hdrc_imx.c index 9f4253777d0de..13731e85980e2 100644 --- a/drivers/usb/chipidea/ci_hdrc_imx.c +++ b/drivers/usb/chipidea/ci_hdrc_imx.c @@ -355,25 +355,29 @@ static int ci_hdrc_imx_probe(struct platform_device *pdev) data->pinctrl = devm_pinctrl_get(dev); if (PTR_ERR(data->pinctrl) == -ENODEV) data->pinctrl = NULL; - else if (IS_ERR(data->pinctrl)) - return dev_err_probe(dev, PTR_ERR(data->pinctrl), + else if (IS_ERR(data->pinctrl)) { + ret = dev_err_probe(dev, PTR_ERR(data->pinctrl), "pinctrl get failed\n"); + goto err_put; + } data->hsic_pad_regulator = devm_regulator_get_optional(dev, "hsic"); if (PTR_ERR(data->hsic_pad_regulator) == -ENODEV) { /* no pad regualator is needed */ data->hsic_pad_regulator = NULL; - } else if (IS_ERR(data->hsic_pad_regulator)) - return dev_err_probe(dev, PTR_ERR(data->hsic_pad_regulator), + } else if (IS_ERR(data->hsic_pad_regulator)) { + ret = dev_err_probe(dev, PTR_ERR(data->hsic_pad_regulator), "Get HSIC pad regulator error\n"); + goto err_put; + } if (data->hsic_pad_regulator) { ret = regulator_enable(data->hsic_pad_regulator); if (ret) { dev_err(dev, "Failed to enable HSIC pad regulator\n"); - return ret; + goto err_put; } } } @@ -387,13 +391,14 @@ static int ci_hdrc_imx_probe(struct platform_device *pdev) dev_err(dev, "pinctrl_hsic_idle lookup failed, err=%ld\n", PTR_ERR(pinctrl_hsic_idle)); - return PTR_ERR(pinctrl_hsic_idle); + ret = PTR_ERR(pinctrl_hsic_idle); + goto err_put; } ret = pinctrl_select_state(data->pinctrl, pinctrl_hsic_idle); if (ret) { dev_err(dev, "hsic_idle select failed, err=%d\n", ret); - return ret; + goto err_put; } data->pinctrl_hsic_active = pinctrl_lookup_state(data->pinctrl, @@ -402,7 +407,8 @@ static int ci_hdrc_imx_probe(struct platform_device *pdev) dev_err(dev, "pinctrl_hsic_active lookup failed, err=%ld\n", PTR_ERR(data->pinctrl_hsic_active)); - return PTR_ERR(data->pinctrl_hsic_active); + ret = PTR_ERR(data->pinctrl_hsic_active); + goto err_put; } } @@ -502,6 +508,8 @@ static int ci_hdrc_imx_probe(struct platform_device *pdev) if (pdata.flags & CI_HDRC_PMQOS) cpu_latency_qos_remove_request(&data->pm_qos_req); data->ci_pdev = NULL; +err_put: + put_device(data->usbmisc_data->dev); return ret; } @@ -525,6 +533,7 @@ static void ci_hdrc_imx_remove(struct platform_device *pdev) if (data->hsic_pad_regulator) regulator_disable(data->hsic_pad_regulator); } + put_device(data->usbmisc_data->dev); } static void ci_hdrc_imx_shutdown(struct platform_device *pdev) -- 2.39.5