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From: Bean Huo <jackyard88@gmail.com>
To: richard@nod.at, dedekind1@gmail.com, adrian.hunter@intel.com,
	computersforpeace@gmail.com, boris.brezillon@free-electrons.com
Cc: beanhuo@micron.com, linux-mtd@lists.infradead.org,
	linux-kernel@vger.kernel.org, zszubbocsev@micron.com,
	peterpandong@micron.com
Subject: [PATCH v2 13/17] drivers:mtd:ubi:add bakvol init while attach ubi
Date: Tue,  2 Feb 2016 02:30:48 +0000	[thread overview]
Message-ID: <1454380252-16170-14-git-send-email-jackyard88@gmail.com> (raw)
In-Reply-To: <1454380252-16170-1-git-send-email-jackyard88@gmail.com>

From: Bean Huo <beanhuo@micron.com>

This file is to initial bakvol moduel and scan PEB to find
bakvol PEB while attach ubi device.

Signed-off-by: BeanHuo <beanhuo@micron.com>
---
 drivers/mtd/ubi/attach.c | 24 +++++++++++++++++++++++-
 1 file changed, 23 insertions(+), 1 deletion(-)

diff --git a/drivers/mtd/ubi/attach.c b/drivers/mtd/ubi/attach.c
index 68eea5b..5c38854 100644
--- a/drivers/mtd/ubi/attach.c
+++ b/drivers/mtd/ubi/attach.c
@@ -919,6 +919,15 @@ static int scan_peb(struct ubi_device *ubi, struct ubi_attach_info *ai,
 	err = ubi_io_read_vid_hdr(ubi, pnum, vidh, 0);
 	if (err < 0)
 		return err;
+
+#ifdef CONFIG_MTD_UBI_MLC_NAND_BAKVOL
+	/*
+	 * Before analyze VID header, call ubi_bakvol_peb_scan to
+	 * find out backup block and build the backup log volume first.
+	 */
+	ubi_bakvol_peb_scan(ubi, vidh, pnum);
+#endif
+
 	switch (err) {
 	case 0:
 		break;
@@ -995,7 +1004,8 @@ static int scan_peb(struct ubi_device *ubi, struct ubi_attach_info *ai,
 		*vid = vol_id;
 	if (sqnum)
 		*sqnum = be64_to_cpu(vidh->sqnum);
-	if (vol_id > UBI_MAX_VOLUMES && vol_id != UBI_LAYOUT_VOLUME_ID) {
+	if ((vol_id > UBI_MAX_VOLUMES && vol_id != UBI_LAYOUT_VOLUME_ID)
+					&& vol_id != UBI_BACKUP_VOLUME_ID) {
 		int lnum = be32_to_cpu(vidh->lnum);
 
 		/* Unsupported internal volume */
@@ -1408,6 +1418,12 @@ int ubi_attach(struct ubi_device *ubi, int force_scan)
 	if (!ai)
 		return -ENOMEM;
 
+#ifdef CONFIG_MTD_UBI_MLC_NAND_BAKVOL
+	err = ubi_bakvol_module_init(ubi);
+	if (err)
+		goto out_ai;
+#endif
+
 #ifdef CONFIG_MTD_UBI_FASTMAP
 	/* On small flash devices we disable fastmap in any case. */
 	if ((int)mtd_div_by_eb(ubi->mtd->size, ubi->mtd) <= UBI_FM_MAX_START) {
@@ -1449,6 +1465,12 @@ int ubi_attach(struct ubi_device *ubi, int force_scan)
 	if (err)
 		goto out_ai;
 
+#ifdef CONFIG_MTD_UBI_MLC_NAND_BAKVOL
+	err = ubi_bakvol_module_init_tail(ubi, ai);
+	if (err)
+		goto out_ai;
+#endif
+
 	err = ubi_wl_init(ubi, ai);
 	if (err)
 		goto out_vtbl;
-- 
1.9.1

  parent reply	other threads:[~2016-02-02  2:37 UTC|newest]

Thread overview: 33+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-02-02  2:30 [PATCH v2 00/17] Add a bakvol module in UBI layer for MLC paired page power loss issue Bean Huo
2016-02-02  2:30 ` [PATCH v2 01/17] include:mtd:add multi-plane page program command Bean Huo
2016-02-02  2:30 ` [PATCH v2 02/17] include:mtd:add multi-plane program in mtd_info Bean Huo
2016-02-02  2:30 ` [PATCH v2 03/17] drivers:mtd:add dual plane page program support in partition layer Bean Huo
2016-02-02  3:00   ` kbuild test robot
2016-02-02  2:30 ` [PATCH v2 04/17] drivers:mtd:nand:enable dual plane page program function Bean Huo
2016-02-02  3:04   ` kbuild test robot
2016-02-02  2:30 ` [PATCH v2 05/17] drivers:mtd:ubi:add bakvol on-flash and RAM data structures Bean Huo
2016-02-02  2:30 ` [PATCH v2 06/17] drivers:mtd:ubi:add bakvol function define in ubi layer Bean Huo
2016-02-02  3:05   ` kbuild test robot
2016-02-02  3:08   ` kbuild test robot
2016-02-02  2:30 ` [PATCH v2 07/17] fs:ubifs:add bakvol function define in ubifs layer Bean Huo
2016-02-02  2:30 ` [PATCH v2 08/17] drivers:mtd:ubi:disable bakvol function while writing volume table Bean Huo
2016-02-02  2:30 ` [PATCH v2 09/17] drivers:mtd:ubi:get PEB according to specfied plane number Bean Huo
2016-02-02  2:30 ` [PATCH v2 10/17] drivers:mtd:ubi:enable bakvol function for fastmap operation Bean Huo
2016-02-02  2:30 ` [PATCH v2 11/17] drivers:mtd:ubi:add disable/enable bakvol while ubi write Bean Huo
2016-02-02  2:30 ` [PATCH v2 12/17] drivers:mtd:ubi:add disable bakvol while ubi detach Bean Huo
2016-02-02  2:30 ` Bean Huo [this message]
2016-02-02  2:30 ` [PATCH v2 14/17] drivers:mtd:ubi:add backup operation in ubi_io_write Bean Huo
2016-02-02  3:22   ` kbuild test robot
2016-02-02  2:30 ` [PATCH v2 15/17] fs:ubifs:enable bakvol module and recover operation Bean Huo
2016-02-02  2:30   ` Bean Huo
2016-02-02  2:30 ` [PATCH v2 16/17] driver:mtd:ubi:add new bakvol module in ubi layer Bean Huo
2016-02-02  2:30 ` [PATCH v2 17/17] drivers:mtd:ubi: Kconfig Makefile Bean Huo
2016-02-02  3:22   ` kbuild test robot
2016-02-02  3:56   ` kbuild test robot
2016-02-02  3:58   ` kbuild test robot
2016-02-02  4:15     ` Bean Huo 霍斌斌 (beanhuo)
2016-02-03  0:46       ` Brian Norris
2016-02-03  6:14         ` Bean Huo 霍斌斌 (beanhuo)
2016-02-02 23:06 ` [PATCH v2 00/17] Add a bakvol module in UBI layer for MLC paired page power loss issue Richard Weinberger
2016-02-03  6:11   ` Bean Huo 霍斌斌 (beanhuo)
2016-02-03  6:11     ` Bean Huo 霍斌斌 (beanhuo)

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