From patchwork Sat Mar 14 03:15:59 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Stanley Chu X-Patchwork-Id: 11438181 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 5B20A14E5 for ; Sat, 14 Mar 2020 03:16:21 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 3AF7020751 for ; Sat, 14 Mar 2020 03:16:21 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=mediatek.com header.i=@mediatek.com header.b="rYS25dAT" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726655AbgCNDQL (ORCPT ); Fri, 13 Mar 2020 23:16:11 -0400 Received: from mailgw01.mediatek.com ([210.61.82.183]:51114 "EHLO mailgw01.mediatek.com" rhost-flags-OK-FAIL-OK-FAIL) by vger.kernel.org with ESMTP id S1726530AbgCNDQK (ORCPT ); Fri, 13 Mar 2020 23:16:10 -0400 X-UUID: bd1b57b6588349d08c3d5522e605bd8b-20200314 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=YAtFprbEne3aSZz7JwyfciYW/D36KWtz75LLZ+igOYI=; b=rYS25dAToOayfxUq0sLY2CN0nKiha5fkPu8HSgbMA2H7NMO4Rra0pKQxYveFC+LKbEVusJ/fmp7OOV8niL0zwKjrxowm9dQycBVqrcNTPb6YqfDEvqxpl4dyqBwbH5WCdCpjCK8bvYMqEad9y6NJ8gkoa3zLly5bwCFBXawvD0Y=; X-UUID: bd1b57b6588349d08c3d5522e605bd8b-20200314 Received: from mtkcas09.mediatek.inc [(172.21.101.178)] by mailgw01.mediatek.com (envelope-from ) (Cellopoint E-mail Firewall v4.1.10 Build 0809 with TLS) with ESMTP id 745921413; Sat, 14 Mar 2020 11:16:03 +0800 Received: from mtkcas08.mediatek.inc (172.21.101.126) by mtkmbs02n1.mediatek.inc (172.21.101.77) with Microsoft SMTP Server (TLS) id 15.0.1395.4; Sat, 14 Mar 2020 11:13:49 +0800 Received: from mtksdccf07.mediatek.inc (172.21.84.99) by mtkcas08.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.0.1395.4 via Frontend Transport; Sat, 14 Mar 2020 11:15:58 +0800 From: Stanley Chu To: , , , , CC: , , , , , , , , , , , , Stanley Chu Subject: [PATCH v1 1/2] scsi: ufs: export ufshcd_link_recovery for vendor's error recovery Date: Sat, 14 Mar 2020 11:15:59 +0800 Message-ID: <20200314031600.10616-2-stanley.chu@mediatek.com> X-Mailer: git-send-email 2.18.0 In-Reply-To: <20200314031600.10616-1-stanley.chu@mediatek.com> References: <20200314031600.10616-1-stanley.chu@mediatek.com> MIME-Version: 1.0 X-MTK: N Sender: linux-scsi-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-scsi@vger.kernel.org export ufshcd_link_recovery to allow vendors to recover failed link in vendor's callbacks. Signed-off-by: Stanley Chu --- 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 cd33d07c56cf..ca9b6898648a 100644 --- a/drivers/scsi/ufs/ufshcd.c +++ b/drivers/scsi/ufs/ufshcd.c @@ -3812,7 +3812,7 @@ 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; @@ -3839,6 +3839,7 @@ 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 269ddb92bb55..e701960f8669 100644 --- a/drivers/scsi/ufs/ufshcd.h +++ b/drivers/scsi/ufs/ufshcd.h @@ -779,6 +779,7 @@ 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);