Commit Graph

1665 Commits

Author SHA1 Message Date
vimal singh
dfe32893cb mtd: omap: adding DMA mode support in nand prefetch/post-write
This patch adds DMA mode support for nand prefetch/post-write engine.

Signed-off-by: Vimal Singh <vimalsingh@ti.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2009-09-19 13:21:05 -07:00
vimal singh
59e9c5ae17 mtd: omap: add support for nand prefetch-read and post-write
This patch adds prefetch support to access nand flash in mpu mode.
This patch also adds 8-bit nand support (omap_read/write_buf8).
Prefetch can be used for both 8- and 16-bit devices.

Signed-off-by: Vimal Singh <vimalsingh@ti.com>
Acked-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2009-09-19 13:20:51 -07:00
Wan ZongShun
8bff82cbc3 mtd: add nand support for w90p910 (v2)
Add w90p910 NAND driver for w90p910 evaluation board
based on w90p910,there is a K8F1G08 NAND on my board.

[dwmw2: depend on MTD_PARTITIONS]

Signed-off-by: Wan ZongShun <mcuos.com@gmail.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2009-09-19 13:17:05 -07:00
Wolfram Sang
fc28c39f0e mtd: maps: add mtd-ram support to physmap_of
Use physmap_of to access RAMs as mtd and add documenation for it. This approach
is a lot less intrusive as adding an of-wrapper around plat-ram.c. As most
extensions of plat-ram.c (e.g. custom map-functions) can't be mapped to the
device tree anyhow, extending physmap_of seems to be the cleanest approach.

Tested with a phyCORE-MPC5121e.

Signed-off-by: Wolfram Sang <w.sang@pengutronix.de>
Cc: Vitaly Wool <vwool@ru.mvista.com>
Cc: Artem Bityutskiy <dedekind@infradead.org>
Cc: Ken MacLeod <ken@bitsko.slc.ut.us>
Cc: Albrecht Dreß <albrecht.dress@arcor.de>
Acked-by: Grant Likely <grant.likely@secretlab.ca>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2009-09-19 13:15:26 -07:00
Yeasah Pell
223cf6c3b5 mtd: pxa3xx_nand: add single-bit error corrections reporting
Acked-by: Eric Miao <eric.y.miao@gmail.com>
Signed-off-by: Yeasah Pell <yeasah@comrex.com>
Signed-off-by: Mike Rapoport <mike@compulab.co.il>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2009-09-19 13:13:08 -07:00
Eric Benard
71b7d0d90d mtd: mxc_nand: fix 2KiB pagesize NAND on i.MX27
This patch allows i.MX27 to support 2KiB pagesize NAND flash.
We are using a 1.8V NAND flash which datasheet (unfortunately only
available under NDA) says :
Page size: x8: 2,112 bytes (2,048 + 64 bytes).
Without this patch, all sectors are marked as bad eraseblock.

Signed-off-by: Eric Benard <ebenard@eukrea.com>
Acked-by : Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2009-09-19 13:11:51 -07:00
Mike Frysinger
64da392ab0 phram: cleanup error handling and associated messages
The error handling in the phram driver is pretty bad -- in many places,
errors are silently ignored or logged, but then still ignored in the
return value.  So convert all of the code to pass back the correct return
value and log error messages properly (and using the new pr_fmt() helper).

If everything does go smoothly, rather than exit silently, dump a helpful
info message like pretty much every other MTD driver does.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Acked-by: Joern Engel <joern@logfs.org>

Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2009-09-19 13:11:12 -07:00
Graf Yang
aa3651e462 mtd: m25p80: add SST WF SPI flash device information
Support SST25WF{512,010,020,040} SPI flashes.

Signed-off-by: Graf Yang <graf.yang@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2009-09-19 13:10:32 -07:00
Graf Yang
49aac4aec5 mtd: m25p80: add support for AAI programming with SST SPI flashes
The SST SPI flashes are a bit non-standard in that they can be programmed
one byte at a time (including address!), or they can be written two bytes
at a time with auto address incrementing (AAI).  The latter form is
obviously much better for performance, so let's use it when possible.

Signed-off-by: Graf Yang <graf.yang@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2009-09-19 13:10:16 -07:00
Mike Frysinger
80f53da0ac mtd: fix order of TEST/PARTITIONS kconfig options
The MTD_TEST config option was added in between the MTD_PARTITIONS config
and its dependent options which causes the resulting menu system to
display incorrectly as MTD_TEST does not depend on MTD_PARTITIONS.  So
move it up a few lines where it won't cause a problem.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2009-09-19 11:53:31 -07:00
Mike Frysinger
d79c326c04 mtd/maps: gpio-addr-flash: new driver for GPIO assisted flash addressing
This driver lets people use GPIO's for additional address lines in case
their processor does not have enough address lines already.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2009-09-19 11:52:42 -07:00
Mike Frysinger
1b533d227e mtd/maps: uclinux: depend on MTD_RAM being built into the kernel
If MTD_RAM is built as a module, the uClinux map does not work since it
can only be built in to the kernel.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2009-09-19 11:47:12 -07:00
Timofei Bondarenko
3ff230a742 mtd/maps: uclinux: fix building when partition support is disabled
The uClinux map driver doesn't even use partitions, so we shouldn't require
it in order to work properly.

Signed-off-by: Timofei Bondarenko <tim@ipi.ac.ru>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: Sonic Zhang <sonic.zhang@analog.com>
CC: Greg Ungerer <gerg@uclinux.org>
CC: uclinux-dev@uclinux.org
CC: linux-mtd@lists.infradead.org

Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2009-09-19 11:44:51 -07:00
Hiroshi Ito
9aff1b1afe mtd: jedec_probe: fix NEC uPD29F064115 detection
linux v2.6.31-rc6 can not detect NEC uPD29F064115.

uPD29F064115 is a 16 bit device.
datasheet:
  http://www.cn.necel.com/memory/cn/download/M16062EJ2V0DS00.pdf

This applies the same fix as used for SST chips in commit 
ca6f12c67e ("jedec_probe: Fix SST 16-bit 
chip detection").

Signed-off-by: Hiroshi Ito <ito@mlb.co.jp>
Cc: Atsushi Nemoto <anemo@mba.ocn.ne.jp>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2009-09-19 11:25:56 -07:00
Roel Kluin
a57ca0466a mtd: mtdpart: prevent a read from regions[-1]
If the erase region was found in the first iteration we read from
regions[-1]

Signed-off-by: Roel Kluin <roel.kluin@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2009-09-19 11:23:26 -07:00
Roel Kluin
ebf2e93036 mtd: mtdconcat: prevent a read from eraseregions[-1]
If the erase region was found in the first iteration we read from
eraseregions[-1]

Signed-off-by: Roel Kluin <roel.kluin@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2009-09-19 11:18:46 -07:00
Roel Kluin
4c1e6b2ce1 mtd: lart: Prevent a read from mtd->eraseregions[-1]
Signed-off-by: Roel Kluin <roel.kluin@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2009-09-19 11:18:15 -07:00
Sneha Narnakaje
f12a947328 mtd: nand: DaVinci: Add 4-bit ECC support for large page NAND chips
This patch adds 4-bit ECC support for large page NAND chips using the new
ECC mode NAND_ECC_HW_OOB_FIRST.  The platform data from board-dm355-evm
has been adjusted to use this mode.

The patches have been verified on DM355 device with 2KiB-page Micron
devices using mtd-tests and JFFS2.  Error correction up to 4 bits has
also been verified using nandwrite/nanddump utilities.

Reviewed-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Sneha Narnakaje <nsnehaprabha@ti.com>
Signed-off-by: Sandeep Paulraj <s-paulraj@ti.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Troy Kisky <troy.kisky@boundarydevices.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2009-09-19 11:16:57 -07:00
Sneha Narnakaje
6e0cb135b3 mtd: nand: add new ECC mode - ECC_HW_OOB_FIRST
This patch adds the new mode NAND_ECC_HW_OOB_FIRST in the nand code to
support 4-bit ECC on TI DaVinci devices with large page (up to 2KiB) NAND
chips.  This ECC mode is similar to NAND_ECC_HW, with the exception of
read_page API that first reads the OOB area, reads the data in chunks,
feeds the ECC from OOB area to the ECC hw engine and perform any
correction on the data as per the ECC status reported by the engine.

"ECC_HW_OOB_FIRST" name suggested by Thomas Gleixner

Reviewed-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Sneha Narnakaje <nsnehaprabha@ti.com>
Signed-off-by: Sandeep Paulraj <s-paulraj@ti.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2009-09-19 11:14:54 -07:00
Sneha Narnakaje
46a8cf2df2 mtd: nand: add "page" parameter to all read_page/read_page_raw APIs
This patch adds a new "page" parameter to all NAND read_page/read_page_raw
APIs.  The read_page API for the new mode ECC_HW_OOB_FIRST requires the
page information to send the READOOB command and read the OOB area before
the data area.

Reviewed-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Sneha Narnakaje <nsnehaprabha@ti.com>
Signed-off-by: Sandeep Paulraj <s-paulraj@ti.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2009-09-19 11:13:47 -07:00
Magnus Damm
778dbcc1eb mtd: onenand: make onenand/generic.c more generic
Remove the ARM dependency from the generic "onenand" platform device
driver.  This change makes the driver useful for other architectures as
well.  Needed for the SuperH kfr2r09 board.

Apart from the obvious Kconfig bits, the most important change is the move
away from ARM specific includes and platform data.  Together with this
change the only in-tree board code gets an update, and the driver name is
also changed gracefully break potential out of tree drivers.

The driver is also updated to allow NULL as platform data together with a
few changes to make use of resource_size() and dev_name().

Signed-off-by: Magnus Damm <damm@igel.co.jp>
Cc: Paul Mundt <lethal@linux-sh.org>
Cc: Tony Lindgren <tony@atomide.com>
Cc: Kyungmin Park <kmpark@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2009-09-19 11:07:50 -07:00
Uwe Kleine-König
f33dabbe79 mtd: nand: register orion_nand using platform_driver_probe()
orion_nand_probe lives in .init.text, so using platform_driver_register to
register it is wrong because binding a device after the init memory is
discarded (e.g.  via sysfs) results in an oops.

As requested by Nicolas Pitre platform_driver_probe is used instead of
moving the probe function to .devinit.text as proposed initially.  This
saves some memory, but devices registered after the driver is probed are
not bound (probably there are none) and binding via sysfs isn't possible.

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Cc: Lennert Buytenhek <buytenh@marvell.com>
Cc: Saeed Bishara <saeed@marvell.com>
Cc: Joern Engel <joern@logfs.org>
Acked-by: Nicolas Pitre <nico@marvell.com>
Cc: Greg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2009-09-19 11:06:30 -07:00
Jiri Slaby
2eaaa5ff87 mtd: sst25l, fix lock imbalance
Add an omitted unlock to one sst25l_erase fail path.

Signed-off-by: Jiri Slaby <jirislaby@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2009-09-19 10:56:53 -07:00
Ryan Mallon
ec77e21b91 mtd: SST25L (non JEDEC) SPI Flash driver
Add support for the non JEDEC SST25L SPI Flash devices.

[dwmw2: Some cleanups]

Signed-off-by: Andre Renaud <andre@bluewatersys.com>
Signed-off-by: Ryan Mallon <ryan@bluewatersys.com>
Acked-by: Linus Walleij <linus.walleij@stericsson.com>
Cc: Anton Vorontsov <avorontsov@ru.mvista.com>
Cc: "H Hartley Sweeten" <hartleys@visionengravers.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2009-09-19 10:54:45 -07:00
Roel Kluin
2c78c44362 mtd: pmcmsp-flash: fix error paths in init_msp_flash
Cleanin up after errors in init_msp_flash().

Also cleanup_msp_flash() attempts to determine the size of
msp_flash with `sizeof(msp_flash) / sizeof(struct mtd_info **)'
This will not work since msp_flash is not an array.

Signed-off-by: Roel Kluin <roel.kluin@gmail.com>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2009-09-04 09:42:06 +01:00
H Hartley Sweeten
fca9108833 mtd: make few symbols static
Make mtd_group and mtd_groups static since they are only used in this
file.

[Amended by Artem Bityutskiy]

Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2009-09-04 09:40:46 +01:00
Paul Mundt
0acfe530a2 mtd: onenand: select MTD_PARTITIONS
All of the onenand drivers depend on mtd partition support being compiled
in, so just select it. Fixes up build breakage:

drivers/built-in.o: In function `generic_onenand_remove':
generic.c:(.devexit.text+0x80): undefined reference to `del_mtd_partitions'

Reported-by: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2009-09-04 09:40:37 +01:00
Siddarth Gore
b0469ea785 mtd: m25p80: add support for 3 Macronix flash chips
Signed-off-by: Siddarth Gore <gores@marvell.com>
Signed-off-by: Nicolas Pitre <nico@marvell.com>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2009-09-04 09:40:27 +01:00
Roel Kluin
c6f7e7beb9 mtd: tests: fix read buffer overflows
Check whether index is within bounds before testing the element.

Signed-off-by: Roel Kluin <roel.kluin@gmail.com>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2009-09-04 09:40:17 +01:00
Roel Kluin
269c0ee663 slram: Read buffer overflow
map[count] is checked before count < SLRAM_MAX_DEVICES_PARAMS

Signed-off-by: Roel Kluin <roel.kluin@gmail.com>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2009-09-04 09:40:09 +01:00
vimal singh
ad4fbc7921 mtd: physmap_of: fix incorrect check
This patch fixes a spelling error that has resulted from copy and
pasting. The location of the error was found using a semantic patch
but the semantic patch was not trying to find these errors. After
looking things over it seemed logical that this change was needed.

The patch also makes sure mtd_list is not being freed if it has not
been allocated

Signed-off-by: Stoyan Gaydarov <sgayda2@uiuc.edu>
Signed-off-by: Vimal Singh <vimalsingh@ti.com>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2009-09-04 09:39:50 +01:00
Singh, Vimal
9a73290d77 mtd: nand_base: allow drivers to choose ECC block size
This patch allows core driver to choose ECC block size in
sw ecc case.

Signed-off-by: Vimal Singh <vimalsingh@ti.com>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2009-09-04 09:39:11 +01:00
Robert P. J. Day
05dd180709 mtd: correct typo "MTD_DATAFLASH_VERIFY_WRITE"
Fix the misspelling to match the actual config variable defined in
drivers/mtd/devi ces/Kconfig:

config MTD_DATAFLASH_WRITE_VERIFY
        bool "Verify DataFlash page writes"
        depends on MTD_DATAFLASH

Signed-off-by: Robert P. J. Day <rpjday@crashcourse.ca>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2009-09-04 09:38:55 +01:00
Russell King
0ffd24fc7f mtd: afs: fix build warning
drivers/mtd/afs.c:244: warning: format ‘%5d’ expects type ‘int’, but argument 4 has type ‘uint64_t’

[dwmw2: fix incorrect 'KB' too]
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2009-09-04 09:38:14 +01:00
Wolfram Sang
76d6a47916 mtd: plat-ram: use resource_size
Signed-off-by: Wolfram Sang <w.sang@pengutronix.de>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2009-09-04 09:37:34 +01:00
Wolfram Sang
2763c508a3 mtd: physmap_of: use resource_size
Signed-off-by: Wolfram Sang <w.sang@pengutronix.de>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2009-09-04 09:37:18 +01:00
H Hartley Sweeten
44a1f2085e mtd: ep93xx: cleanup includes in ts7250 nand driver
1. <linux/io.h> should be included not <asm/io.h>
2. add platform specific header <mach/ts72xx.h>

Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Cc: Lennert Buytenhek <buytenh@wantstofly.org>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2009-09-04 09:35:12 +01:00
Matthias Kaehlcke
dff1550986 mtd: fix a typo in comment
mtdblock erase_write(): fix typo in comment

Signed-off-by: Matthias Kaehlcke <matthias@kaehlcke.net>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2009-09-04 09:34:49 +01:00
vimal singh
20d8e2489d mtd: nand_base: use __func__ instead of typing names
Correcting debug prints by removing function names from print messages
and using '__func__' macro instead.

Function names were wrong in few places.

Signed-off-by: Vimal Singh <vimalsingh@ti.com>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2009-09-04 09:34:38 +01:00
vimal singh
b8b3ee9aab mtd: nand: remove repeated comment, fix spelling
Singed-off-by: Vimal Singh <vimalsingh@ti.com>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2009-09-04 09:33:51 +01:00
Mika Korhonen
492e150143 mtd: OneNAND: spelling fixes
Signed-off-by: Mika Korhonen <mika.j.korhonen@gmail.com>
Acked-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2009-09-04 09:30:17 +01:00
Dimitri Gorokhovik
16f05c2b68 mtd: nftl: fix offset alignments
Arithmetic conversion in the mask computation makes the upper word
of the second argument passed down to mtd->read_oob(), be always 0
(assuming 'offs' being a 64-bit signed long long type, and
'mtd->writesize' being a 32-bit unsigned int type).

This patch applies over the other one adding masking in nftl_write,
"nftl: write support is broken".

Signed-off-by: Dimitri Gorokhovik <dimitri.gorokhovik@free.fr>
Cc: Tim Gardner <tim.gardner@canonical.com>
Cc: Scott James Remnant <scott@canonical.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2009-09-03 14:59:16 +01:00
Dimitri Gorokhovik
4149ed1aa9 mtd: nftl: write support is broken
Write support is broken in NFTL. Fix it.

Signed-off-by: <dimitri.gorokhovik@free.fr>
Cc: Tim Gardner <tim.gardner@canonical.com>
Cc: Scott James Remnant <scott@canonical.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2009-09-03 14:59:13 +01:00
Anton Vorontsov
edcb3b1486 mtd: m25p80: fix null pointer dereference bug
This patch fixes the following oops, observed with MTD_PARTITIONS=n:

m25p80 spi32766.0: m25p80 (1024 Kbytes)
Unable to handle kernel paging request for data at address 0x00000008
Faulting instruction address: 0xc03a54b0
Oops: Kernel access of bad area, sig: 11 [#1]
Modules linked in:
NIP: c03a54b0 LR: c03a5494 CTR: c01e98b8
REGS: ef82bb60 TRAP: 0300   Not tainted  (2.6.31-rc4-00167-g4733fd3)
MSR: 00029000 <EE,ME,CE>  CR: 24022022  XER: 20000000
DEAR: 00000008, ESR: 00000000
TASK = ef82c000[1] 'swapper' THREAD: ef82a000
GPR00: 00000000 ef82bc10 ef82c000 0000002e 00001eb8 ffffffff c01e9824 00000036
GPR08: c054ed40 c0542a08 00001eb8 00004000 22022022 1001a1a0 3ff8fd00 00000000
GPR16: 00000000 00000001 00000000 00000000 ef82bddc c0530000 efbef500 ef8356d0
GPR24: 00000000 ef8356d0 00000000 efbf7a00 c0530ec4 ffffffed efbf5300 c0541f98
NIP [c03a54b0] m25p_probe+0x22c/0x354
LR [c03a5494] m25p_probe+0x210/0x354
Call Trace:
[ef82bc10] [c03a5494] m25p_probe+0x210/0x354 (unreliable)
[ef82bca0] [c024e37c] spi_drv_probe+0x2c/0x3c
[ef82bcb0] [c01f1afc] driver_probe_device+0xa4/0x178
[ef82bcd0] [c01f06e8] bus_for_each_drv+0x6c/0xa8
[ef82bd00] [c01f1a34] device_attach+0x84/0xa8
...

Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com>
Cc: David Brownell <david-b@pacbell.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2009-09-03 13:58:02 +01:00
Simon Kagstrom
94da210af4 [ARM] Orion NAND: Make asm volatile avoid GCC pushing ldrd out of the loop
GCC 4.3.3 and 4.4.1 happily moves the dword load instruction out of the
loop in orion_nand_read_buf. This patch makes the instruction volatile
to avoid the issue. I've discussed this at gcc-help, refer to the thread
at

  http://gcc.gnu.org/ml/gcc-help/2009-08/msg00187.html

The early clobber is added to avoid the destination registers and the
source register overlapping.

Signed-off-by: Simon Kagstrom <simon.kagstrom@netinsight.net>
Signed-off-by: Nicolas Pitre <nico@marvell.com>
2009-08-24 11:56:00 -04:00
Jeff Garzik
67fe068808 Remove zero-length file drivers/mtd/maps/sbc8240.c
It was "deleted" in commit 2bf961b7cc

Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2009-08-12 06:29:57 -04:00
Linus Torvalds
f4b9a98868 Merge branch 'for-linus' of git://git.infradead.org/ubi-2.6
* 'for-linus' of git://git.infradead.org/ubi-2.6:
  UBI: compatible fallback in absense of sequence numbers
  UBI: fix double free on error path
2009-08-09 14:58:34 -07:00
Matthias Kaehlcke
d676c11727 mtd: mtdblock: introduce mtdblks_lock
The mtdblks array and its content are prone to race conditions. Introduce
the mutex mtdblks_lock in order to solve this.

[Amended by Artem Bityutskiy]

Signed-off-by: Matthias Kaehlcke <matthias@kaehlcke.net>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2009-08-03 14:25:00 +01:00
Subrata Modak
2bf961b7cc mtd: remove 'SBC8240 Wind River' Device Driver Code
This driver is causing build errors and is no longer needed -- it is obsoleted
by physmap_of.

Signed-off-by: Subrata Modak <subrata@linux.vnet.ibm.com>
Tested-on-PPC64-by: Subrata Modak <subrata@linux.vnet.ibm.com>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2009-08-03 14:22:54 +01:00
Mika Korhonen
3cae1cc149 mtd: OneNAND: OMAP2/3: free GPMC CS on module removal
GPMC CS was not freed in omap2_onenand_remove() preventing the module
from reloading after removal.

Signed-off-by: Mika Korhonen <ext-mika.2.korhonen@nokia.com>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2009-08-03 14:22:16 +01:00