From patchwork Tue Jul 9 06:36:20 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Varadarajan Narayanan X-Patchwork-Id: 13727330 X-Patchwork-Delegate: kw@linux.com Received: from mx0b-0031df01.pphosted.com (mx0b-0031df01.pphosted.com [205.220.180.131]) (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 376F213B7AF; Tue, 9 Jul 2024 06:36:44 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=205.220.180.131 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1720507006; cv=none; b=R3FU44nJtce04USl6A9OIA8uvDcscQ8qGxE2lID4jdrcxK8YZ/ZXEFL6h5ezSfi/0T41h7JyrM4FbGyPQEQ3AkQwRxawh7UKNFJJyfTMl00sfm6xHd2U8CRZbFDF0OJHgN3Fwiwja2dvAmwq3NJZF4h/JfrhHDAjhw8TiffMgyI= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1720507006; c=relaxed/simple; bh=RpAXK7DqvVegnwp8Vh3nGtV1F/CCyp0yIh0wn9fYZS4=; h=From:To:CC:Subject:Date:Message-ID:MIME-Version:Content-Type; b=LONzBzIun1pebEd5kdoecxYIZvGqUrT+ui1uxQ0zUSFksV7lwUBytP4rHLELwtZaJBk+2g3Z+BelyeG/wKDpFP5M66XJwb4FZtUytxJuw2xfCudj6+OzOLNVqRTTsTVurKO2vaa10ozDCHNgfj1+iVb1ltIj202XyNL5VYXm/K8= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=quicinc.com; spf=pass smtp.mailfrom=quicinc.com; dkim=pass (2048-bit key) header.d=quicinc.com header.i=@quicinc.com header.b=Ol/phP0x; arc=none smtp.client-ip=205.220.180.131 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=quicinc.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=quicinc.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=quicinc.com header.i=@quicinc.com header.b="Ol/phP0x" Received: from pps.filterd (m0279871.ppops.net [127.0.0.1]) by mx0a-0031df01.pphosted.com (8.18.1.2/8.18.1.2) with ESMTP id 4690WDSt031488; Tue, 9 Jul 2024 06:36:37 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=quicinc.com; h= cc:content-transfer-encoding:content-type:date:from:message-id :mime-version:subject:to; s=qcppdkim1; bh=mu0GfX41Pj6F8M+OZgbvFj ssGrwjbceCh1fDVyP0xic=; b=Ol/phP0xgPjMUhrQ1fgkZTTgJKDzRO6AYEMV9f PJTZaj/wp0+bv+Z/iX76wbyBUAnYjr7B5h7aNEktfkLlOm6D9H1IvXiHT5vtgHTn 38mCkbMc67yf0Qr9OoBi44VH/ijiDj9KKkWd7QJx0IDIVMx1ZWe2nd3emev6ltgE +HDsush7P1yAP1QFmyAk1+h1L7IyUytVG35/eooDo/0mXP8pPJ6UeiO0ztRMRA0f 1ogLUHEjv1no7IvDmL1yS5NfqNkxQ6qZCwS6ORJq8BlwrmR+flbLdJjKZI+Cv7dT qsg+nsod/D2R6qENgTMF9QWrFvJ3Tq9fccWtpCPbGd1Eq3sA== Received: from nasanppmta03.qualcomm.com (i-global254.qualcomm.com [199.106.103.254]) by mx0a-0031df01.pphosted.com (PPS) with ESMTPS id 406wgwnhk3-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Tue, 09 Jul 2024 06:36:36 +0000 (GMT) Received: from nasanex01b.na.qualcomm.com (nasanex01b.na.qualcomm.com [10.46.141.250]) by NASANPPMTA03.qualcomm.com (8.17.1.19/8.17.1.19) with ESMTPS id 4696aZsP020080 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Tue, 9 Jul 2024 06:36:35 GMT Received: from hu-varada-blr.qualcomm.com (10.80.80.8) by nasanex01b.na.qualcomm.com (10.46.141.250) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1544.9; Mon, 8 Jul 2024 23:36:32 -0700 From: Varadarajan Narayanan To: , , , , , , , , CC: Varadarajan Narayanan Subject: [PATCH v1] pci: qcom: Fix 'opp' variable usage Date: Tue, 9 Jul 2024 12:06:20 +0530 Message-ID: <20240709063620.4125951-1-quic_varada@quicinc.com> X-Mailer: git-send-email 2.34.1 Precedence: bulk X-Mailing-List: linux-pci@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-ClientProxiedBy: nasanex01b.na.qualcomm.com (10.46.141.250) To nasanex01b.na.qualcomm.com (10.46.141.250) X-QCInternal: smtphost X-Proofpoint-Virus-Version: vendor=nai engine=6200 definitions=5800 signatures=585085 X-Proofpoint-GUID: shdqdnuhQ0HTffvqTa2nbHrdiTVArVOU X-Proofpoint-ORIG-GUID: shdqdnuhQ0HTffvqTa2nbHrdiTVArVOU X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1039,Hydra:6.0.680,FMLib:17.12.28.16 definitions=2024-07-08_15,2024-07-08_01,2024-05-17_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 mlxlogscore=866 mlxscore=0 adultscore=0 malwarescore=0 spamscore=0 bulkscore=0 lowpriorityscore=0 suspectscore=0 clxscore=1011 priorityscore=1501 phishscore=0 impostorscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.19.0-2406140001 definitions=main-2407090043 qcom_pcie_icc_opp_update() calls 'dev_pm_opp_put(opp)' regardless of the success of dev_pm_opp_find_freq_exact(). If dev_pm_opp_find_freq_exact() had failed and 'opp' had some error value, the subsequent dev_pm_opp_put(opp) results in a crash. Hence call dev_pm_opp_put(opp) only if 'opp' has a valid value. Fixes: 78b5f6f8855e ("PCI: qcom: Add OPP support to scale performance") Signed-off-by: Varadarajan Narayanan --- drivers/pci/controller/dwc/pcie-qcom.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/pci/controller/dwc/pcie-qcom.c b/drivers/pci/controller/dwc/pcie-qcom.c index 26405fcfa499..2a80d4499c25 100644 --- a/drivers/pci/controller/dwc/pcie-qcom.c +++ b/drivers/pci/controller/dwc/pcie-qcom.c @@ -1443,8 +1443,8 @@ static void qcom_pcie_icc_opp_update(struct qcom_pcie *pcie) if (ret) dev_err(pci->dev, "Failed to set OPP for freq (%lu): %d\n", freq_kbps * width, ret); + dev_pm_opp_put(opp); } - dev_pm_opp_put(opp); } }