From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mailgw02.mediatek.com (unknown [210.61.82.184]) (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 811542D979F for ; Wed, 24 Sep 2025 09:45:35 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=210.61.82.184 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1758707141; cv=none; b=E09ciNGNPWYF3LRyyb4X4HNWv9d2y4oyP794dQH57B8tXAA6qJL5h9WcPbSatwGWvkv3zR8cn4WiyAWoj50fqsXk6p1bnB5xdnPN6pilsqVozIuNjI9cuQbRMurgO0k9NH/F0w8KF1GKSogrV/F4zXCzX9honPffUcS4ySRjjJQ= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1758707141; c=relaxed/simple; bh=y8/GHLbuB8BFW0h6Jo0sx1mOkYiIbqFlSijDIq6LLXY=; h=From:To:CC:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=OOQ+FhfX7QigrY2YNnswyYUfqG3lwhFmhVKghO6O18de2VPOe/m8IuFurJYlrFQzsIHPHjOyUpU+A22qAWEQomrCuITQRwUH5KqQVIx7OmnCrpdG1WxcpbnnEzcqK1yqb3BjwR6voNkwDxJq6NbvFswUwrXxCIHbdWtxbnsF1Ek= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=mediatek.com; spf=pass smtp.mailfrom=mediatek.com; dkim=pass (1024-bit key) header.d=mediatek.com header.i=@mediatek.com header.b=BSZ9rF6H; arc=none smtp.client-ip=210.61.82.184 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=mediatek.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=mediatek.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=mediatek.com header.i=@mediatek.com header.b="BSZ9rF6H" X-UUID: 3521e4a4992b11f0b33aeb1e7f16c2b6-20250924 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=mediatek.com; s=dk; h=Content-Type:Content-Transfer-Encoding:MIME-Version:References:In-Reply-To:Message-ID:Date:Subject:CC:To:From; bh=my6H6lYbT/FQC+oIyyH8G6zpCvW5PIHEnjCe8CCE4Lo=; b=BSZ9rF6HPBkO741Y9kx0eBYGMaeuXoqEBrlHAQjdu40espky0UJI7XUAhHbo2X0qD70cYnN6dUGJ9yEIcINtSecxVKw7ua9xBTDHG5Yp3bc7IjpP2wx7JUUBUYUZHIji9wmdc5BivJlArPas+pF3c1t/Q0en7K3qR13p629DgDM=; X-CID-P-RULE: Release_Ham X-CID-O-INFO: VERSION:1.3.4,REQID:b85e47a7-4806-4b3f-b474-491321852fc9,IP:0,UR L:0,TC:0,Content:-5,EDM:0,RT:0,SF:0,FILE:0,BULK:0,RULE:Release_Ham,ACTION: release,TS:-5 X-CID-META: VersionHash:1ca6b93,CLOUDID:c2decc21-c299-443d-bb51-d77d2f000e20,B ulkID:nil,BulkQuantity:0,Recheck:0,SF:81|82|102|836|888|898,TC:-5,Content: 0|15|50,EDM:-3,IP:nil,URL:0,File:130,RT:nil,Bulk:nil,QS:nil,BEC:nil,COL:0, OSI:0,OSA:0,AV:0,LES:1,SPR:NO,DKR:0,DKP:0,BRR:0,BRE:0,ARC:0 X-CID-BVR: 3,DMD|SSN|SDN X-CID-BAS: 3,DMD|SSN|SDN,0,_ X-CID-FACTOR: TF_CID_SPAM_SNR X-CID-RHF: D41D8CD98F00B204E9800998ECF8427E X-UUID: 3521e4a4992b11f0b33aeb1e7f16c2b6-20250924 Received: from mtkmbs10n2.mediatek.inc [(172.21.101.183)] by mailgw02.mediatek.com (envelope-from ) (Generic MTA with TLSv1.2 ECDHE-RSA-AES256-GCM-SHA384 256/256) with ESMTP id 1106130326; Wed, 24 Sep 2025 17:45:30 +0800 Received: from mtkmbs11n1.mediatek.inc (172.21.101.185) by MTKMBS09N2.mediatek.inc (172.21.101.94) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1748.10; Wed, 24 Sep 2025 17:45:29 +0800 Received: from mtksitap99.mediatek.inc (10.233.130.16) by mtkmbs11n1.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.2.1748.10 via Frontend Transport; Wed, 24 Sep 2025 17:45:29 +0800 From: To: , CC: , , , , , , , , , , , , , , , Subject: [PATCH v2 5/8] ufs: host: mediatek: Fix shutdown/suspend race condition Date: Wed, 24 Sep 2025 17:43:27 +0800 Message-ID: <20250924094527.2992256-6-peter.wang@mediatek.com> X-Mailer: git-send-email 2.45.2 In-Reply-To: <20250924094527.2992256-1-peter.wang@mediatek.com> References: <20250924094527.2992256-1-peter.wang@mediatek.com> Precedence: bulk X-Mailing-List: linux-scsi@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Content-Type: text/plain X-MTK: N From: Peter Wang Address a race condition between shutdown and suspend operations in the UFS Mediatek driver. Before entering suspend, check if a shutdown is in progress to prevent conflicts and ensure system stability. Signed-off-by: Peter Wang --- drivers/ufs/host/ufs-mediatek.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/drivers/ufs/host/ufs-mediatek.c b/drivers/ufs/host/ufs-mediatek.c index 2a69b4cede22..c00e62adbbda 100644 --- a/drivers/ufs/host/ufs-mediatek.c +++ b/drivers/ufs/host/ufs-mediatek.c @@ -2425,6 +2425,11 @@ static int ufs_mtk_system_suspend(struct device *dev) struct arm_smccc_res res; int ret; + if (hba->shutting_down) { + ret = -EBUSY; + goto out; + } + ret = ufshcd_system_suspend(dev); if (ret) goto out; -- 2.45.2