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 B4C273BD64B; Mon, 23 Mar 2026 16:19:11 +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=1774282751; cv=none; b=FfoUrY0arBIpsU7DE/zF+cBAVHjwAiDZSWSuWw4plwa2j5tZXWGMLrxC1oC8r4huPj+NW6TkJQ2MQwaVAaCXDOt1ybH++QH2msNu+Mre5cwgYd3rlhyXKMLXcMqWoTzMamEwFs7SPdjM8kjixZNbEVZXIV02htI8cEtuaiF+nDE= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1774282751; c=relaxed/simple; bh=PSy81XKGvG0UkrkQeHMqskJEVi7aWVCR4vBFGkc69o4=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=tMyJvEhQznTya3LKT5mUhL3An50fRJ8VFMdv082PtLuoIfCN7F1loU9gBdFsHlvreZyF12h/dBr8jWUXH2Aglli9436vqk9T1CaJGqPTgmCcL0PcALx22uZrriawtbbvWNl8CZRnLKVqPRQ2hBiSRRqNe7Lu9lwHIX0GTEtmZHE= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=o7LdITvd; 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="o7LdITvd" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 45950C4CEF7; Mon, 23 Mar 2026 16:19:11 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1774282751; bh=PSy81XKGvG0UkrkQeHMqskJEVi7aWVCR4vBFGkc69o4=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=o7LdITvdyJSwaRZM9tcUOYvf/P9BhMC4GKOpNVLY0XYYN8VspDYxTMvHJNJ2p4Ngg cR9LxMoh8r2J35C1VBshW3ZhM5k1oAJMUQ7l3XV+VK7h+rMEFl9gzBA+uZBMNtEflo XoeuL8ofw2TWr9YFB60AwkblVKFcX6VtVZOY5DZk= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Linus Walleij , Antoniu Miclaus , Stable@vger.kernel.org, Jonathan Cameron Subject: [PATCH 6.1 270/481] iio: gyro: mpu3050-core: fix pm_runtime error handling Date: Mon, 23 Mar 2026 14:44:12 +0100 Message-ID: <20260323134531.713043747@linuxfoundation.org> X-Mailer: git-send-email 2.53.0 In-Reply-To: <20260323134525.256603107@linuxfoundation.org> References: <20260323134525.256603107@linuxfoundation.org> User-Agent: quilt/0.69 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 6.1-stable review patch. If anyone has any objections, please let me know. ------------------ From: Antoniu Miclaus commit acc3949aab3e8094641a9c7c2768de1958c88378 upstream. The return value of pm_runtime_get_sync() is not checked, allowing the driver to access hardware that may fail to resume. The device usage count is also unconditionally incremented. Use pm_runtime_resume_and_get() which propagates errors and avoids incrementing the usage count on failure. In preenable, add pm_runtime_put_autosuspend() on set_8khz_samplerate() failure since postdisable does not run when preenable fails. Fixes: 3904b28efb2c ("iio: gyro: Add driver for the MPU-3050 gyroscope") Reviewed-by: Linus Walleij Signed-off-by: Antoniu Miclaus Cc: Signed-off-by: Jonathan Cameron Signed-off-by: Greg Kroah-Hartman --- drivers/iio/gyro/mpu3050-core.c | 18 +++++++++++++----- 1 file changed, 13 insertions(+), 5 deletions(-) --- a/drivers/iio/gyro/mpu3050-core.c +++ b/drivers/iio/gyro/mpu3050-core.c @@ -322,7 +322,9 @@ static int mpu3050_read_raw(struct iio_d } case IIO_CHAN_INFO_RAW: /* Resume device */ - pm_runtime_get_sync(mpu3050->dev); + ret = pm_runtime_resume_and_get(mpu3050->dev); + if (ret) + return ret; mutex_lock(&mpu3050->lock); ret = mpu3050_set_8khz_samplerate(mpu3050); @@ -651,14 +653,20 @@ out_trigger_unlock: static int mpu3050_buffer_preenable(struct iio_dev *indio_dev) { struct mpu3050 *mpu3050 = iio_priv(indio_dev); + int ret; - pm_runtime_get_sync(mpu3050->dev); + ret = pm_runtime_resume_and_get(mpu3050->dev); + if (ret) + return ret; /* Unless we have OUR trigger active, run at full speed */ - if (!mpu3050->hw_irq_trigger) - return mpu3050_set_8khz_samplerate(mpu3050); + if (!mpu3050->hw_irq_trigger) { + ret = mpu3050_set_8khz_samplerate(mpu3050); + if (ret) + pm_runtime_put_autosuspend(mpu3050->dev); + } - return 0; + return ret; } static int mpu3050_buffer_postdisable(struct iio_dev *indio_dev)