From patchwork Fri Nov 22 02:49:43 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: =?utf-8?b?UGV0ZXIgV2FuZyAo546L5L+h5Y+LKQ==?= X-Patchwork-Id: 845097 Received: from mailgw01.mediatek.com (unknown [60.244.123.138]) (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 E98CF2309AC; Fri, 22 Nov 2024 02:49:52 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=60.244.123.138 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1732243796; cv=none; b=rCjv2kAaV5wrMRgDrU/5rMmTrVL3UzhrUH85staXjr5xaZfRcmUDyWvLRYpwTFm0C+qPfzC0+yusotjek+97C/Hx25JlLQ/c7tvZvc0AbRQlcJOPqqVsv7DdBea2xjK6wOx2AJxa7WXUoFohcTR6i/wLjUU+eRSuo/rreWUF17A= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1732243796; c=relaxed/simple; bh=cdzMsiV/tKEiouLnKT23Dq0aYQyt65BCw77t6GUW2zg=; h=From:To:CC:Subject:Date:Message-ID:MIME-Version:Content-Type; b=FWujzbPiWLlsJmYyVVouuJThJ4+iLBy+QqAZeLZp5NUICpIPrf62Ea61JqZXWrRAebC3JkJ7c3En98JFqXotAw0O+BK5Vxp9gA3Qu+7y++8DFJOdJZKlzIdLe0eKZ1ffjlnD1n5K1ydQbPM+x+d+ysxzDNEo2DAshwbvlX8LM10= 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=DZJyjhwE; arc=none smtp.client-ip=60.244.123.138 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="DZJyjhwE" X-UUID: 6f15d666a87c11ef99858b75a2457dd9-20241122 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=mediatek.com; s=dk; h=Content-Type:MIME-Version:Message-ID:Date:Subject:CC:To:From; bh=yR4nQ8FcC5S0oePaY8aJ51ztZct7g8GnoM20tznO0Mw=; b=DZJyjhwEtmiOo/jZz6dJyo3rKGz+kR0DJl3DWuqyHHiXx4aXdRBd1lJbIZwf0BoEC+0KA9PvrSvh7MdqZAuj59GLJSA39V+t38t58YlMrMQQ1VHT3CYHZ45v5WxiWJnFJoLLMqYoUCtge4uB+ec2qWf5o43dkBEj73C60NBTXtM=; X-CID-P-RULE: Release_Ham X-CID-O-INFO: VERSION:1.1.44, REQID:fe1d30fe-9d07-42d2-90a4-3948f9601e03, IP:0, U RL:0,TC:0,Content:-25,EDM:0,RT:0,SF:0,FILE:0,BULK:0,RULE:Release_Ham,ACTIO N:release,TS:-25 X-CID-META: VersionHash:464815b, CLOUDID:8691e4fe-58af-4a77-b036-41f515d81476, B ulkID:nil,BulkQuantity:0,Recheck:0,SF:102,TC:nil,Content:0,EDM:-3,IP:nil,U RL:11|1,File:nil,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: 0 X-CID-BAS: 0,_,0,_ X-CID-FACTOR: TF_CID_SPAM_SNR,TF_CID_SPAM_ULN X-UUID: 6f15d666a87c11ef99858b75a2457dd9-20241122 Received: from mtkmbs11n2.mediatek.inc [(172.21.101.187)] by mailgw01.mediatek.com (envelope-from ) (Generic MTA with TLSv1.2 ECDHE-RSA-AES256-GCM-SHA384 256/256) with ESMTP id 1866262619; Fri, 22 Nov 2024 10:49:46 +0800 Received: from mtkmbs13n1.mediatek.inc (172.21.101.193) 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 15.2.1118.26; Fri, 22 Nov 2024 10:49:45 +0800 Received: from mtksdccf07.mediatek.inc (172.21.84.99) by mtkmbs13n1.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.2.1118.26 via Frontend Transport; Fri, 22 Nov 2024 10:49:45 +0800 From: To: , , , , CC: , , , , , , , , , , , , , , , , , Subject: [PATCH v2] ufs: core: add missing post notify for power mode change Date: Fri, 22 Nov 2024 10:49:43 +0800 Message-ID: <20241122024943.30589-1-peter.wang@mediatek.com> X-Mailer: git-send-email 2.18.0 Precedence: bulk X-Mailing-List: linux-scsi@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-MTK: N From: Peter Wang When the power mode change is successful but the power mode hasn't actually changed, the post notification was missed. Similar to the approach with hibernate/clock scale/hce enable, having pre/post notifications in the same function will make it easier to maintain. Additionally, supplement the description of power parameters for the pwr_change_notify callback. Fixes: 7eb584db73be ("ufs: refactor configuring power mode") Cc: stable@vger.kernel.org #6.11.x Signed-off-by: Peter Wang --- drivers/ufs/core/ufshcd.c | 7 ++++--- include/ufs/ufshcd.h | 10 ++++++---- 2 files changed, 10 insertions(+), 7 deletions(-) diff --git a/drivers/ufs/core/ufshcd.c b/drivers/ufs/core/ufshcd.c index abbe7135a977..814402e93a1e 100644 --- a/drivers/ufs/core/ufshcd.c +++ b/drivers/ufs/core/ufshcd.c @@ -4651,9 +4651,6 @@ static int ufshcd_change_power_mode(struct ufs_hba *hba, dev_err(hba->dev, "%s: power mode change failed %d\n", __func__, ret); } else { - ufshcd_vops_pwr_change_notify(hba, POST_CHANGE, NULL, - pwr_mode); - memcpy(&hba->pwr_info, pwr_mode, sizeof(struct ufs_pa_layer_attr)); } @@ -4682,6 +4679,10 @@ int ufshcd_config_pwr_mode(struct ufs_hba *hba, ret = ufshcd_change_power_mode(hba, &final_params); + if (!ret) + ufshcd_vops_pwr_change_notify(hba, POST_CHANGE, NULL, + &final_params); + return ret; } EXPORT_SYMBOL_GPL(ufshcd_config_pwr_mode); diff --git a/include/ufs/ufshcd.h b/include/ufs/ufshcd.h index 3f68ae3e4330..1db754b4a4d6 100644 --- a/include/ufs/ufshcd.h +++ b/include/ufs/ufshcd.h @@ -308,7 +308,9 @@ struct ufs_pwr_mode_info { * to allow variant specific Uni-Pro initialization. * @pwr_change_notify: called before and after a power mode change * is carried out to allow vendor spesific capabilities - * to be set. + * to be set. PRE_CHANGE can modify final_params based + * on desired_pwr_mode, but POST_CHANGE must not alter + * the final_params parameter * @setup_xfer_req: called before any transfer request is issued * to set some things * @setup_task_mgmt: called before any task management request is issued @@ -350,9 +352,9 @@ struct ufs_hba_variant_ops { int (*link_startup_notify)(struct ufs_hba *, enum ufs_notify_change_status); int (*pwr_change_notify)(struct ufs_hba *, - enum ufs_notify_change_status status, - struct ufs_pa_layer_attr *, - struct ufs_pa_layer_attr *); + enum ufs_notify_change_status status, + struct ufs_pa_layer_attr *desired_pwr_mode, + struct ufs_pa_layer_attr *final_params); void (*setup_xfer_req)(struct ufs_hba *hba, int tag, bool is_scsi_cmd); void (*setup_task_mgmt)(struct ufs_hba *, int, u8);