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Fixed by returning API required value, also use pr_err() instead of WARN() for this error case handling. Fixes: 14486c82612a ("rfkill: add a reason to the HW rfkill state") Signed-off-by: Zijun Hu --- net/rfkill/core.c | 10 ++++++---- 1 file changed, 6 insertions(+), 4 deletions(-) diff --git a/net/rfkill/core.c b/net/rfkill/core.c index c3feb4f49d09..0dc982b4fce6 100644 --- a/net/rfkill/core.c +++ b/net/rfkill/core.c @@ -543,13 +543,15 @@ bool rfkill_set_hw_state_reason(struct rfkill *rfkill, { unsigned long flags; bool ret, prev; + const unsigned long reason_mask = RFKILL_HARD_BLOCK_SIGNAL | + RFKILL_HARD_BLOCK_NOT_OWNER; BUG_ON(!rfkill); - if (WARN(reason & - ~(RFKILL_HARD_BLOCK_SIGNAL | RFKILL_HARD_BLOCK_NOT_OWNER), - "hw_state reason not supported: 0x%lx", reason)) - return blocked; + if (reason & ~reason_mask) { + pr_err("hw_state reason not supported: 0x%lx\n", reason); + return rfkill_blocked(rfkill); + } spin_lock_irqsave(&rfkill->lock, flags); prev = !!(rfkill->hard_block_reasons & reason); From patchwork Fri Jun 7 14:40:12 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: quic_zijuhu X-Patchwork-Id: 802589 Received: from mx0a-0031df01.pphosted.com (mx0a-0031df01.pphosted.com [205.220.168.131]) (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 B88C519EEC6; 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Fri, 07 Jun 2024 14:40:45 +0000 (GMT) Received: from nasanex01a.na.qualcomm.com (nasanex01a.na.qualcomm.com [10.52.223.231]) by NASANPPMTA02.qualcomm.com (8.17.1.5/8.17.1.5) with ESMTPS id 457EejLK003259 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Fri, 7 Jun 2024 14:40:45 GMT Received: from zijuhu-gv.qualcomm.com (10.80.80.8) by nasanex01a.na.qualcomm.com (10.52.223.231) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1544.9; Fri, 7 Jun 2024 07:40:42 -0700 From: Zijun Hu To: , , , , , CC: , , Zijun Hu Subject: [PATCH v1 2/2] net: rfkill: Fix a logic error within rfkill_set_hw_state_reason() Date: Fri, 7 Jun 2024 22:40:12 +0800 Message-ID: <1717771212-30723-3-git-send-email-quic_zijuhu@quicinc.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1717771212-30723-1-git-send-email-quic_zijuhu@quicinc.com> References: <1717771212-30723-1-git-send-email-quic_zijuhu@quicinc.com> Precedence: bulk X-Mailing-List: linux-wireless@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-ClientProxiedBy: nasanex01b.na.qualcomm.com (10.46.141.250) To nasanex01a.na.qualcomm.com (10.52.223.231) X-QCInternal: smtphost X-Proofpoint-Virus-Version: vendor=nai engine=6200 definitions=5800 signatures=585085 X-Proofpoint-GUID: 2FHTj_MMi_T46cufvKidzxstmrlKQo6r X-Proofpoint-ORIG-GUID: 2FHTj_MMi_T46cufvKidzxstmrlKQo6r 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=2024-06-07_08,2024-06-06_02,2024-05-17_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 priorityscore=1501 bulkscore=0 impostorscore=0 clxscore=1015 spamscore=0 malwarescore=0 mlxlogscore=999 mlxscore=0 adultscore=0 lowpriorityscore=0 suspectscore=0 phishscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.19.0-2405170001 definitions=main-2406070108 Kernel API rfkill_set_hw_state_reason() wrongly gets previous block state by using its parameter @reason as reason mask. Fixed by using @reason_mask as reason mask. Fixes: 14486c82612a ("rfkill: add a reason to the HW rfkill state") Signed-off-by: Zijun Hu --- net/rfkill/core.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/net/rfkill/core.c b/net/rfkill/core.c index 0dc982b4fce6..ee7a751b6c5a 100644 --- a/net/rfkill/core.c +++ b/net/rfkill/core.c @@ -554,7 +554,7 @@ bool rfkill_set_hw_state_reason(struct rfkill *rfkill, } spin_lock_irqsave(&rfkill->lock, flags); - prev = !!(rfkill->hard_block_reasons & reason); + prev = !!(rfkill->hard_block_reasons & reason_mask); if (blocked) { rfkill->state |= RFKILL_BLOCK_HW; rfkill->hard_block_reasons |= reason;