From patchwork Thu Mar 26 15:07:46 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Stanley Chu X-Patchwork-Id: 11460433 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 EF3EF1667 for ; Thu, 26 Mar 2020 15:18:13 +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 CD40820748 for ; Thu, 26 Mar 2020 15:18:13 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="rAxMKW+Q"; dkim=fail reason="signature verification failed" (1024-bit key) header.d=mediatek.com header.i=@mediatek.com header.b="lux+jXCr" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org CD40820748 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=j5DpKXkJF2ibUmPYFq8kwEC9g0//B6mrphh/BcQMegI=; b=rAxMKW+QdV8hI8 hCq5EgJA9nnCi0lea7dPMf+6dt/AME4ISqMeoZHlmUVnGPvE6YAHYLZC35UyOM5rDpSznmr9TxTLf OWErUdWsNkHlh7NA0l9OhFlfl3YMPTzW06ApdUFVpRHVVbtZ0Ndu2rwZe2hJpA5Ez3jva1cfP8Cxq ChFhw1gA31sA9Dfmy22bNShXstGYqkQa9KFwVhsrzdreUskqWozTcrv1hvHVeKnE9YZeP3mROHC1C Hqjp6HBU+NmHbH5baloqKEQow2JK/cBF7MCFFXTt2ZBsIZlZvHhcVOJq23i+R6BVg8Q+zaOwn+M8z rBsyhoDJPAU+NIyMH3gA==; 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 1jHUGp-0000Lk-9x; Thu, 26 Mar 2020 15:18:11 +0000 Received: from mailgw02.mediatek.com ([216.200.240.185]) by bombadil.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1jHUGm-0000LH-HB; Thu, 26 Mar 2020 15:18:09 +0000 X-UUID: db37383057b341ceba0ce3535ee24a94-20200326 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=vbt8M8WIPWo1zIniJVu4/PocNBz51l1e4P8cL+H/b+k=; b=lux+jXCrQ4TwJAoPB5frAuKyQLbtHt2MZTVdteXTmUhCE9JBR2iPse6FdAbA+XW1ZtPwPzRBeG6z0mC5hpGk639U+hGiFFtWmImry8qsp4AA2jWiRQ++yqnEmMD3kvAN4vOHHbou/NHkG/e/pp4iidcwUBDqynpfbh+Eqb7T4Oo=; X-UUID: db37383057b341ceba0ce3535ee24a94-20200326 Received: from mtkcas66.mediatek.inc [(172.29.193.44)] by mailgw02.mediatek.com (envelope-from ) (musrelay.mediatek.com ESMTP with TLS) with ESMTP id 573936593; Thu, 26 Mar 2020 07:18:00 -0800 Received: from MTKMBS02N2.mediatek.inc (172.21.101.101) by MTKMBS62N1.mediatek.inc (172.29.193.41) with Microsoft SMTP Server (TLS) id 15.0.1395.4; Thu, 26 Mar 2020 08:07:58 -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; Thu, 26 Mar 2020 23:07:48 +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; Thu, 26 Mar 2020 23:07:48 +0800 From: Stanley Chu To: , , , , Subject: [PATCH v2 1/2] scsi: ufs: export ufshcd_link_recovery for vendor's error recovery Date: Thu, 26 Mar 2020 23:07:46 +0800 Message-ID: <20200326150747.11426-2-stanley.chu@mediatek.com> X-Mailer: git-send-email 2.18.0 In-Reply-To: <20200326150747.11426-1-stanley.chu@mediatek.com> References: <20200326150747.11426-1-stanley.chu@mediatek.com> MIME-Version: 1.0 X-TM-SNTS-SMTP: 3B4DE866CA24C8DECD553FD626F999EA4FBE18C23BA3BB09DBFFBB063594295F2000:8 X-MTK: N X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200326_081808_583470_7577DAF9 X-CRM114-Status: UNSURE ( 8.47 ) 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 SPF_HELO_NONE SPF: HELO does not publish an SPF Record -0.0 SPF_PASS SPF: sender matches SPF record 0.0 MIME_BASE64_TEXT RAW: Message text disguised using base64 encoding -0.1 DKIM_VALID_AU Message has a valid DKIM or DK signature from author's domain -0.1 DKIM_VALID_EF Message has a valid DKIM or DK signature from envelope-from domain -0.1 DKIM_VALID Message has at least one valid DKIM or DK signature 0.1 DKIM_SIGNED Message has a DKIM or DK signature, not necessarily valid 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 4b30fb2f7da7..92967df2c877 100644 --- a/drivers/scsi/ufs/ufshcd.c +++ b/drivers/scsi/ufs/ufshcd.c @@ -3744,7 +3744,7 @@ 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; @@ -3771,6 +3771,7 @@ 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 d45a04444191..836d90a5c0e6 100644 --- a/drivers/scsi/ufs/ufshcd.h +++ b/drivers/scsi/ufs/ufshcd.h @@ -785,6 +785,7 @@ 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);