From patchwork Fri Mar 27 09:53:28 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Stanley Chu X-Patchwork-Id: 11462117 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 127111667 for ; Fri, 27 Mar 2020 09:53:48 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id CB58F206F2 for ; Fri, 27 Mar 2020 09:53:47 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="ji1aaPOG"; dkim=fail reason="signature verification failed" (1024-bit key) header.d=mediatek.com header.i=@mediatek.com header.b="QBzBkwQX" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org CB58F206F2 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=mediatek.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:Cc:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-ID:Date:Subject:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=nTiZs4vlDN+3rFkyV6au7byfiDjfEFQIGsbWNu3e2S4=; b=ji1aaPOGPCzoWV yfLte92TQB528GNdTHudmryfI3KvLpxntWY39r3t54khpPvPqX4J9ZMt+MulOpvhrmao1UBh4hgm/ B0f82kaMFYUWzWRzFLHbmLz6Eg8qA52xeeYmUsbJDJhPDRRethBaWVGIsSWKZoxlHXH0ErFvlJwy4 uOU3ozu/Ny86IIQ9CQ3Yg7EBwa4PkohHL3FRw+YlEOU5ogOJu0xgPB0q0DGt7hgDko/faFpnb7ghc 4Xi0j0mK53WZm0ms0ksLQHNunC59s04ety1ljSkjAQWCYRZynNUo0JNVrK/OuL6uVZZ6Jrm/aYIZH +NgJmAV7sP5cPZyWShPg==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1jHlgN-0004RF-0k; Fri, 27 Mar 2020 09:53:43 +0000 Received: from mailgw01.mediatek.com ([216.200.240.184]) by bombadil.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1jHlgJ-0004QJ-Gr; Fri, 27 Mar 2020 09:53:40 +0000 X-UUID: d5b6591ac9dc4c14a79d2c84661893d5-20200327 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=mediatek.com; s=dk; h=Content-Transfer-Encoding:Content-Type:MIME-Version:References:In-Reply-To:Message-ID:Date:Subject:CC:To:From; bh=w7oxstLD2GuzbIKhk9bnNyPTXe7NJEzoA3j++6T3ySo=; b=QBzBkwQXBm+f4vWbHIUUJNPHiM0p45Rf3xbEmIWcq/q5qROZnBPQEEW6wwhI2OtSln95CMXADkIoMFuKW/0LE+enzWxMPDZ7Y44H9V2jjECgPsaMmFPKtxBwqmhACoVc9ryqQ9WWl9+QjmFp0g+H+RUlYP217Ui31S/fGgTfEfY=; X-UUID: d5b6591ac9dc4c14a79d2c84661893d5-20200327 Received: from mtkcas66.mediatek.inc [(172.29.193.44)] by mailgw01.mediatek.com (envelope-from ) (musrelay.mediatek.com ESMTP with TLS) with ESMTP id 411029741; Fri, 27 Mar 2020 01:53:35 -0800 Received: from MTKMBS02N2.mediatek.inc (172.21.101.101) by MTKMBS62DR.mediatek.inc (172.29.94.18) with Microsoft SMTP Server (TLS) id 15.0.1395.4; Fri, 27 Mar 2020 02:53:33 -0700 Received: from mtkcas07.mediatek.inc (172.21.101.84) by mtkmbs02n2.mediatek.inc (172.21.101.101) with Microsoft SMTP Server (TLS) id 15.0.1395.4; Fri, 27 Mar 2020 17:53:30 +0800 Received: from mtksdccf07.mediatek.inc (172.21.84.99) by mtkcas07.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.0.1395.4 via Frontend Transport; Fri, 27 Mar 2020 17:53:30 +0800 From: Stanley Chu To: , , , , Subject: [PATCH v3 1/2] scsi: ufs: export ufshcd_link_recovery for vendor's error recovery Date: Fri, 27 Mar 2020 17:53:28 +0800 Message-ID: <20200327095329.10083-2-stanley.chu@mediatek.com> X-Mailer: git-send-email 2.18.0 In-Reply-To: <20200327095329.10083-1-stanley.chu@mediatek.com> References: <20200327095329.10083-1-stanley.chu@mediatek.com> MIME-Version: 1.0 X-TM-SNTS-SMTP: E08D348CC037095C24DB8AD27AA26EF5FAEBA49D95044037708CACD30FC09F102000:8 X-MTK: N X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200327_025339_566128_18069EDD X-CRM114-Status: UNSURE ( 8.01 ) X-CRM114-Notice: Please train this message. X-Spam-Score: -0.2 (/) X-Spam-Report: SpamAssassin version 3.4.4 on bombadil.infradead.org summary: Content analysis details: (-0.2 points) pts rule name description ---- ---------------------- -------------------------------------------------- -0.0 RCVD_IN_DNSWL_NONE RBL: Sender listed at https://www.dnswl.org/, no trust [216.200.240.184 listed in list.dnswl.org] -0.0 SPF_PASS SPF: sender matches SPF record 0.0 SPF_HELO_NONE SPF: HELO does not publish an SPF Record 0.0 MIME_BASE64_TEXT RAW: Message text disguised using base64 encoding -0.1 DKIM_VALID Message has at least one valid DKIM or DK signature -0.1 DKIM_VALID_EF Message has a valid DKIM or DK signature from envelope-from domain 0.1 DKIM_SIGNED Message has a DKIM or DK signature, not necessarily valid -0.1 DKIM_VALID_AU Message has a valid DKIM or DK signature from author's domain 0.0 UNPARSEABLE_RELAY Informational: message has unparseable relay lines X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Stanley Chu , bvanassche@acm.org, andy.teng@mediatek.com, chun-hung.wu@mediatek.com, kuohong.wang@mediatek.com, linux-kernel@vger.kernel.org, cang@codeaurora.org, linux-mediatek@lists.infradead.org, peter.wang@mediatek.com, matthias.bgg@gmail.com, beanhuo@micron.com, linux-arm-kernel@lists.infradead.org, asutoshd@codeaurora.org Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org export ufshcd_link_recovery to allow vendors to recover failed link in vendor's callbacks. Signed-off-by: Stanley Chu Reviewed-by: Avri Altman --- drivers/scsi/ufs/ufshcd.c | 3 ++- drivers/scsi/ufs/ufshcd.h | 1 + 2 files changed, 3 insertions(+), 1 deletion(-) diff --git a/drivers/scsi/ufs/ufshcd.c b/drivers/scsi/ufs/ufshcd.c index b4294b2c6f4a..227660a1a446 100644 --- a/drivers/scsi/ufs/ufshcd.c +++ b/drivers/scsi/ufs/ufshcd.c @@ -3756,7 +3756,7 @@ static int ufshcd_uic_change_pwr_mode(struct ufs_hba *hba, u8 mode) return ret; } -static int ufshcd_link_recovery(struct ufs_hba *hba) +int ufshcd_link_recovery(struct ufs_hba *hba) { int ret; unsigned long flags; @@ -3783,6 +3783,7 @@ static int ufshcd_link_recovery(struct ufs_hba *hba) return ret; } +EXPORT_SYMBOL_GPL(ufshcd_link_recovery); static int __ufshcd_uic_hibern8_enter(struct ufs_hba *hba) { diff --git a/drivers/scsi/ufs/ufshcd.h b/drivers/scsi/ufs/ufshcd.h index 9f1576bbfc50..b7bd81795c24 100644 --- a/drivers/scsi/ufs/ufshcd.h +++ b/drivers/scsi/ufs/ufshcd.h @@ -795,6 +795,7 @@ int ufshcd_alloc_host(struct device *, struct ufs_hba **); void ufshcd_dealloc_host(struct ufs_hba *); int ufshcd_hba_enable(struct ufs_hba *hba); int ufshcd_init(struct ufs_hba * , void __iomem * , unsigned int); +int ufshcd_link_recovery(struct ufs_hba *hba); int ufshcd_make_hba_operational(struct ufs_hba *hba); void ufshcd_remove(struct ufs_hba *); int ufshcd_uic_hibern8_exit(struct ufs_hba *hba);