From: Maxim Levitsky <maximlevitsky@gmail.com>
To: David Woodhouse <dwmw2@infradead.org>
Cc: Artem Bityutskiy <dedekind1@gmail.com>,
linux-mtd <linux-mtd@lists.infradead.org>,
linux-kernel <linux-kernel@vger.kernel.org>,
Alex Dubov <oakad@yahoo.com>, joern <joern@logfs.org>,
Thomas Gleixner <tglx@linutronix.de>,
"stanley.miao" <stanley.miao@windriver.com>,
Vitaly Wool <vitalywool@gmail.com>,
Maxim Levitsky <maximlevitsky@gmail.com>
Subject: [PATCH 07/14] MTD: nand: make MTD_OOB_PLACE work correctly.
Date: Sat, 13 Feb 2010 15:03:06 +0200 [thread overview]
Message-ID: <1266066193-17625-8-git-send-email-maximlevitsky@gmail.com> (raw)
In-Reply-To: <1266066193-17625-1-git-send-email-maximlevitsky@gmail.com>
MTD_OOB_PLACE is supposed to read/write the raw oob data similiar to the MTD_OOB_RAW
however due to a bug, currently it is not possible to read more data that
is specified by the oob 'free' regions.
Signed-off-by: Maxim Levitsky <maximlevitsky@gmail.com>
---
drivers/mtd/nand/nand_base.c | 6 +++++-
1 files changed, 5 insertions(+), 1 deletions(-)
diff --git a/drivers/mtd/nand/nand_base.c b/drivers/mtd/nand/nand_base.c
index 279b960..53c1e04 100644
--- a/drivers/mtd/nand/nand_base.c
+++ b/drivers/mtd/nand/nand_base.c
@@ -1229,6 +1229,9 @@ static int nand_do_read_ops(struct mtd_info *mtd, loff_t from,
int ret = 0;
uint32_t readlen = ops->len;
uint32_t oobreadlen = ops->ooblen;
+ uint32_t max_oobsize = ops->mode == MTD_OOB_AUTO ?
+ mtd->oobavail : mtd->oobsize;
+
uint8_t *bufpoi, *oob, *buf;
stats = mtd->ecc_stats;
@@ -1279,10 +1282,11 @@ static int nand_do_read_ops(struct mtd_info *mtd, loff_t from,
buf += bytes;
if (unlikely(oob)) {
+
/* Raw mode does data:oob:data:oob */
if (ops->mode != MTD_OOB_RAW) {
int toread = min(oobreadlen,
- chip->ecc.layout->oobavail);
+ max_oobsize);
if (toread) {
oob = nand_transfer_oob(chip,
oob, ops, toread);
--
1.6.3.3
next prev parent reply other threads:[~2010-02-13 13:05 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-02-13 13:02 [PATCH 0/14 V8] Work to enable SmartMedia/xD support in mtd Maxim Levitsky
2010-02-13 13:03 ` [PATCH 01/14] MTD: create unlocked versions of {get,put}_mtd_device Use these only if you know that you already hold mtd_table_mutex Maxim Levitsky
2010-02-13 13:03 ` [PATCH 02/14] blktrans: remove mtd_blkcore_priv and switch to per device queue and thread Maxim Levitsky
2010-02-13 13:03 ` [PATCH 03/14] blktrans: Hotplug fixes Maxim Levitsky
2010-02-13 13:03 ` [PATCH 04/14] MTD: call the remove notifiers before assuming it is in use Maxim Levitsky
2010-02-13 13:03 ` [PATCH 05/14] blktrans: allow FTL drivers to export sysfs attributes Maxim Levitsky
2010-02-13 13:03 ` [PATCH 06/14] MTD: nand: make suspend work if device is accessed by kernel threads Maxim Levitsky
2010-02-13 13:03 ` Maxim Levitsky [this message]
2010-02-13 13:03 ` [PATCH 08/14] MTD: nand: cleanup the nand_do_write_ops Maxim Levitsky
2010-02-13 13:03 ` [PATCH 09/14] MTD: nand: make reads using MTD_OOB_RAW affect only ECC validation Maxim Levitsky
2010-02-13 13:03 ` [PATCH 10/14] MTD: nand: add ->badblockbits to specify the minimum number of bits in bad block byte to consider the block good Maxim Levitsky
2010-02-13 13:03 ` [PATCH 11/14] MTD: common module for smartmedia/xD support Maxim Levitsky
2010-02-13 13:03 ` [PATCH 12/14] MTD: add few workarounds to nand system for SmartMedia/xD chips Maxim Levitsky
2010-02-13 13:03 ` [PATCH 13/14] MTD: Add nand driver for ricoh xD/SmartMedia reader Maxim Levitsky
2010-02-13 13:03 ` [PATCH 14/14] MTD: Add new SmartMedia/xD FTL Maxim Levitsky
-- strict thread matches above, loose matches on Subject: below --
2010-02-17 21:49 [PATCH 0/14 V9] Work to enable SmartMedia/xD support in mtd Maxim Levitsky
2010-02-17 21:49 ` [PATCH 07/14] MTD: nand: make MTD_OOB_PLACE work correctly Maxim Levitsky
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