| Commit message (Collapse) | Author | Age |
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Which means if inftl or similar are loaded with it (which is a dumb thing
to do admittedly) it may oops.
Closes #8108
[dwmw2: change error to -EROFS to match write-protected flash]
Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
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The NOR Flash memory K8P2815UQB from Samsung uses the major version
number '0'. Add a quirk to cope with it.
Signed-off-by: Wolfgang Grandegger <wg@grandegger.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
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MTD internal API presently uses 32-bit values to represent
device size. This patch updates them to 64-bits but leaves
the external API unchanged. Extending the external API
is a separate issue for several reasons. First, no one
needs it at the moment. Secondly, whether the implementation
is done with IOCTLs, sysfs or both is still debated. Thirdly
external API changes require the internal API to be accepted
first.
Note that although the MTD API will be able to support 64-bit
device sizes, existing drivers do not and are not required
to do so, although NAND base has been updated.
In general, changing from 32-bit to 64-bit values cause little
or no changes to the majority of the code with the following
exceptions:
- printk message formats
- division and modulus of 64-bit values
- NAND base support
- 32-bit local variables used by mtdpart and mtdconcat
- naughtily assuming one structure maps to another
in MEMERASE ioctl
Signed-off-by: Adrian Hunter <ext-adrian.hunter@nokia.com>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
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For "unlock" cycles to 16bit devices in 8bit compatibility mode we need
to use the byte addresses 0xaaa and 0x555. These effectively match
the word address 0x555 and 0x2aa, except the latter has its low bit set.
Most chips don't care about the value of the 'A-1' pin in x8 mode,
but some -- like the ST M29W320D -- do. So we need to be careful to
set it where appropriate.
cfi_send_gen_cmd is only ever passed addresses where the low byte
is 0x00, 0x55 or 0xaa. Of those, only addresses ending 0xaa are
affected by this patch, by masking in the extra low bit when the device
is known to be in compatibility mode.
[dwmw2: Do it only when (cmd_ofs & 0xff) == 0xaa]
v4: Fix stupid typo in cfi_build_cmd_addr that failed to compile
I'm writing this patch way to late at night.
v3: Bring all of the work back into cfi_build_cmd_addr
including calling of map_bankwidth(map) and cfi_interleave(cfi)
So every caller doesn't need to.
v2: Only modified the address if we our device_type is larger than our
bus width.
Cc: stable@kernel.org
Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
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The CFI information read from AT49BV6416 lists the erase regions in the
wrong order, causing problems when trying to erase or update the first
or last 64KiB block.
Work around this by inverting the "top boot" flag, which will
effectively reverse the order of the erase regions.
This chip is obsolete, but it's used in some existing designs.
Signed-off-by: Håvard Skinnemoen <haavard.skinnemoen@atmel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
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This patch adds TopBottom detection for most Macronix chips with CFI V1.0.
The main purpose of this patch is to add detection of the MX29LV400C B
used on the LaCie Ethernet Disk mini V2 NAS.
It detects the following parts correctly:-
MX28F640C3B T
MX29LV002C B
MX29LV002NC B
MX29LV004C T
MX29LV400C T/B
MX29LV800C T/B
MX29LV160C T/B
MX29SL800C T/B
MX29SL802C T/B
It detects the following uniform part as bottom but it should work
correctly:-
MX29LV040C
For T parts it causes the erase block table to be reversed correctly.
For other parts it avoids the bogus "Assuming top" message.
It does not detect the following correctly:-
MX28F640C3B B
MX29LV002C T
MX29LV002NC T
MX29LV004C B
MX29SL400C T/B
MX29SL402C T/B
If desired I could supply a more complicated patch to handle these as
well.
Only the MX29LV400C B has been physically tested; others were checked
against their data sheets.
Signed-off-by: Christopher Moore <moore@free.fr>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
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The patch fixes CFI issue with multipartitional devices leading to the
set of errors or even deadlock. The problem is CFI FL_SYNCING state race
with flash operations (e.g. erase suspend). It is reproduced by running
intensive writes on one JFFS2 partition and simultaneously performing
mount/unmount cycle on another partition of the same chip.
Signed-off-by: Alexander Belyakov <abelyako@googlemail.com>
Acked-by: Nicolas Pitre <nico@cam.org>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
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It requires cfi_qry_mode_on(), which is in cfi_util.c
Reported by Russell King
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
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They need to be exported, so let's give them less generic-sounding names
while we're at it.
Original export patch, along with the suggestion about the nomenclature,
from Stephen Rothwell.
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
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Timeouts are currently given by the typical operation time times 8.
It works in the general well-behaved case but not when an erase block is
failing. For erase operations, it seems that a failing erase block will
keep the device state machine in erasing state until the vendor
specified maximum timeout period has passed. By this time the driver
would have long since timed out, left erasing state and attempted
further operations which all fail. This patch implements timeouts using
values from the CFI Query structure when available.
The patch also sets a longer timeout for locking operations. The current
value used for locking/unlocking given by 1000000/HZ microseconds is too
short for devices like J3 and J5 Strataflash which have a typical clear
lock-bits time of 0.5 seconds.
Signed-off-by: Anders Grafström <grfstrm@users.sourceforge.net>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
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There are some CFI chips which require non standard procedures to get
into QRY mode. The possible way to support them would be trying
different modes till QRY will be read. This patch introduce two new
functions qry_mode_on qry_mode_off. qry_mode_on tries different commands
in order switch chip into QRY mode.
So if we have one more "odd" chip - we just could add several lines to
qry_mode_on. Also using these functions remove unnecessary code
duplicaton in porbe procedure.
Currently there are two "odd" cases
1. Some old intel chips which require 0xFF before 0x98
2. ST M29DW chip which requires 0x98 to be sent at 0x555 (according to
CFI should be 0x55)
This patch is partialy based on the patch from Uwe
(see "[PATCH 2/4] [RFC][MTD] cfi_probe: remove Intel chip workaround"
thread )
Signed-off-by: Alexey Korolev <akorolev@infradead.org>
Signed-off-by: Alexander Belyakov <abelyako@gmail.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
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This long overdue trivial change to the MTD_CFI_AMDSTD kconfig menu
description is intended to help clarify that this option also supports
Spansion flash devices.
Signed-off-by: George G. Davis <gdavis@mvista.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
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The kernel.h macro DIV_ROUND_UP performs the computation (((n) + (d) - 1) /
(d)) but is perhaps more readable.
Signed-off-by: Julia Lawall <julia@diku.dk>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
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Now that we can tell when we have one of the newer DataFlash chips,
optionally expose the 128 bytes of OTP memory they provide. Tested
on at45db642 revision B and D chips.
Switch mtdchar over to a generic HAVE_MTD_OTP flag instead of adding
another #ifdef for each type of chip whose driver has OTP support.
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Cc: Bryan Wu <cooloney@kernel.org>
Cc: Michael Hennerich <michael.hennerich@analog.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
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The device id for Am29DL800BB in jedec_probe.c is wrong.
Reference: http://www.spansion.com/datasheets/21519c4.pdf
I discovered this while working with u-boot.
The u-boot folks mentioned Linux as an upstream reference, thought I'd
post a heads-up here too.
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
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The unlock_addr rework in kernel 2.6.25 breaks 16-bit SST chips. SST
39LF160 and SST 39VF1601 are both 16-bit only chip (do not have BYTE#
pin) and new uaddr value is not correct for them. Add
MTD_UADDR_0xAAAA_0x5555 for those chips. Tested with SST 39VF1601
chip.
Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
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Existing CFI driver has problems with excessive writes during erase.
If CFI driver does many writes during one erase cycle we may face the
messages with -ETIMEO error on erase operation. It may cause the
following data corruption and kernel panics.
The reason of the issue is related to specifics of suspend operation:
if we write to flash during erase, suspend operation will cost some time
to erase procedure (for P30 it could be significant). In current version of
cfi driver the problem of many suspends is partially workarounded by adding
some time reserv to any operation (8xerase_time) but if we have many writes
during one erase the problem appears.
This patch detects the suspend and resets timer if suspend occured. It
has been well verified on different chips. No problems were found.
Could you please include the patch as it is simple and fixes bad issue.
Signed-off-by: Alexey Korolev <akorolev@infradead.org>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
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Use pr_debug(...) instead of printk(KERN_DEBUG ...) so that the message
is only printed when debugging is enabled.
Signed-off-by: Jean Delvare <khali@linux-fr.org>
Tested-by: John stoffel <john@stoffel.org>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
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Once upon a time, the MTD repository was using CVS.
This patch therefore removes all usages of the no longer updated CVS
keywords from the MTD code.
This also includes code that printed them to the user.
Signed-off-by: Adrian Bunk <bunk@kernel.org>
Signed-off-by: David Woodhouse <dwmw2@infradead.org>
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This patch add support for non-CFI Eon EN29SL800B[BT] NOR flash chips.
The Eon chips have manufacturer ID in the first bank, therefore this patch
depends on support for flash chips with ID in bank other than 0.
Signed-off-by: Mike Rapoport <mike@compulab.co.il>
Signed-off-by: David Woodhouse <dwmw2@infradead.org>
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According to JEDEC "Standard Manufacturer's Identification Code"
(http://www.jedec.org/download/search/jep106W.pdf)
several first banks of NOR flash can contain 0x7f instead of actual ID.
This patch adds support for reading manufacturer ID from banks other than 0.
Signed-off-by: Mike Rapoport <mike@compulab.co.il>
Signed-off-by: David Woodhouse <dwmw2@infradead.org>
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Signed-off-by: Mike Rapoport <mike@compulab.co.il>
Signed-off-by: David Woodhouse <dwmw2@infradead.org>
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Add support for M50FLW080A and M50FLW080B revisions of LPC flash
devices.
Signed-off-by: Aaron Lindner <alindner@xes-inc.com>
Signed-off-by: Nate Case <ncase@xes-inc.com>
Signed-off-by: David Woodhouse <dwmw2@infradead.org>
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Fix typo in erase suspend while write fixup code leading to compile time
error if CMDSET0001_DISABLE_ERASE_SUSPEND_ON_WRITE was defined.
drivers/mtd/chips/cfi_cmdset_0001.c: In function 'fixup_intel_strataflash':
drivers/mtd/chips/cfi_cmdset_0001.c:212: error: 'struct cfi_pri_amdstd' has no member named 'SuspendCmdSupport'
Signed-off-by: Alexander Belyakov <abelyako@googlemail.com>
Signed-off-by: David Woodhouse <dwmw2@infradead.org>
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Adding the ability to get a physical address from point() in addition
to virtual address. This physical address is required for XIP of
userspace code from flash.
Signed-off-by: Jared Hulbert <jaredeh@gmail.com>
Reviewed-by: Jörn Engel <joern@logfs.org>
Acked-by: Nicolas Pitre <nico@cam.org>
Acked-by: Greg Ungerer <gerg@uclinux.org>
Signed-off-by: David Woodhouse <dwmw2@infradead.org>
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collie seems to contain LH28F640BF flash chips. According to
http://sharp-world.com/products/device/flash/pdf/*FUM00701*@E.pdf
(page 83) if they have 0x51 of Extended Query Table (number of hardware
partitions) set to zero, they have a single fixed partition.
This patch makes those chips work.
Signed-off-by: Thomas Kunze <thommycheck@gmx.de>
Signed-off-by: David Woodhouse <dwmw2@infradead.org>
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This is a known erratum confirmed by Spansion. I have an errata document,
but I can't find a link to it anywhere on their site to include here.
Some of the S29GL064N chips report 64 sectors when they should report 128,
and some of S29GL032N chips report 127 sectors when they should report 63.
Note that when the chip dies are fixed by Spansion, they will still have
the same id. The fix is done in such a way that it won't affect corrected
chips.
The fixups use the extended id made available by a previous patch. Without
that, virtually all newer AMD/Spansion chips will have the same ID (0x227e)
and it's not possible to apply the fixup to the correct chips.
Signed-off-by: Trent Piepho <tpiepho@freescale.com>
Signed-off-by: David Woodhouse <dwmw2@infradead.org>
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AMD/Spansion use a device id of 0x7e to indicate an extended device is
present at offset 0xe and 0xf in the query data.
I've verified with Spansion that all their chips (mfr == 0x01) with an id
of 0x7e use it to indicate an extended id is present. What's more, there
are no chips with a NON-extended id that is the same as a different chip's
extended id. In other words, when the extended ID is present, one can
replace the normal id with the extended id without losing any information.
Which is what I've done.
Signed-off-by: Trent Piepho <tpiepho@freescale.com>
Signed-off-by: David Woodhouse <dwmw2@infradead.org>
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Add support for the SST 36VF3203 flash chip. It is used on Emerson
KSI8560 board.
Signed-off-by: Andrei Dolnikov <adolnikov@ru.mvista.com>
Signed-off-by: David Woodhouse <dwmw2@infradead.org>
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Untested, but shouldn't break anything... Makes MTD_XIP arch
independent. I guess this is why xip_iprefetch() was made for.
Signed-off-by: Paulius Zaleckas <paulius.zaleckas@teltonika.lt>
Acked-by: Nicolas Pitre <nico@cam.org>
Signed-off-by: David Woodhouse <dwmw2@infradead.org>
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This patch makes the needlessly global cfi_staa_erase_varsize() static.
Signed-off-by: Adrian Bunk <bunk@kernel.org>
Signed-off-by: David Woodhouse <dwmw2@infradead.org>
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__FUNCTION__ is gcc-specific, use __func__
Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: David Woodhouse <dwmw2@infradead.org>
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Signed-off-by: David Woodhouse <dwmw2@infradead.org>
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Add support for the ST M29W400DB flash chip. which is used on the GLAN Tank
NAS.
Signed-off-by: Gordon Farquharson <gordonfarquharson@gmail.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: David Woodhouse <dwmw2@infradead.org>
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cfi_amdstd_sync() and cfi_staa_sync() call schedule() without changing task's
state appropriately.
In case of e.g. chip->state == FL_ERASING, cfi_*_sync() will be busy-looping
either redundantly for a fixed interval of time (for SCHED_NORMAL tasks) or
possibly endlessly (for RT tasks and UP).
Signed-off-by: Dmitry Adamushko <dmitry.adamushko@gmail.com>
Cc: David Woodhouse <dwmw2@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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THe CFI driver in 2.6.24 kernel is broken. Not so intensive read/write
operations cause incomplete writes which lead to kernel panics in JFFS2.
We investigated the issue - it is caused by bug in FL_SHUTDOWN parsing code.
Sometimes chip returns -EIO as if it is in FL_SHUTDOWN state when it should
wait in FL_PONT (error in order of conditions).
The following patch fixes the bug in state parsing code of CFI. Also I've
added comments to notify developers if they want to add new case in future.
Signed-off-by: Alexey Korolev <akorolev@infradead.org>
Reviewed-by: Joern Engel <joern@logfs.org>
Cc: David Woodhouse <dwmw2@infradead.org>
Cc: <stable@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Taken from http://bugzilla.kernel.org/show_bug.cgi?id=9829
I found and solved the problem, at line 115 of drivers/mtd/chips/gen_probe.c
(kernel 2.6.24): mapsize value must be calculated in bytes, not in long.
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: David Woodhouse <dwmw2@infradead.org>
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The bug causes corruptions of data read from flash.
The original code performs cache invalidation from "adr" to "adr + len"
in do_write_buffer(). Since len and adr could be updated in the code
before invalidation - it causes improper setting of cache invalidation
regions.
Signed-off-by: Massimo Cirillo <maxcir@gmail.com>
Signed-off-by: Giuseppe D'Eliseo <giuseppedeliseo@gmail.com>
Acked-by: Nicolas Pitre <nico@cam.org>
Acked-by: Jörn Engel <joern@logfs.org>
Signed-off-by: David Woohouse <dwmw2@infradead.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Patch for unlocking all Intel flash that has instant locking on power up.
The patch has been tested on Intel M18, P30 and J3D Strata Flash.
1. The automatic unlocking can be disabled for a particular partition
in the map or the command line.
a. For the bit mask in the map it should look like:
.mask_flags = MTD_POWERUP_LOCK,
b. For the command line parsing it should look like:
mtdparts=0x80000(bootloader)lk
2. This will only unlock parts with instant individual block locking.
Intel parts with legacy unlocking will not be unlocked.
Signed-off-by: Justin Treon <justin_treon@yahoo.com>
Signed-off-by: Jared Hulbert <jaredeh@gmail.com>
Acked-by: Nicolas Pitre <nico@cam.org>
Signed-off-by: David Woodhouse <dwmw2@infradead.org>
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Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@helsinki.fi>
Signed-off-by: David Woodhouse <dwmw2@infradead.org>
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$ codiff $OBJ.old $OBJ
drivers/mtd/chips/jedec_probe.c:
cfi_jedec_setup | -320
jedec_probe_chip | -7073
2 functions changed, 7393 bytes removed, diff: -7393
drivers/mtd/chips/jedec_probe.c:
jedec_reset | +1151
1 function changed, 1151 bytes added, diff: +1151
drivers/mtd/chips/jedec_probe.o:
3 functions changed, 1151 bytes added, 7393 bytes removed, diff: -6242
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@helsinki.fi>
Signed-off-by: David Woodhouse <dwmw2@infradead.org>
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According to "Common Flash Memory Interface Publication 100" dated December 1,
2001, the interface code for x16/x32 chips is 0x0005, and not 0x0004 used so
far.
Signed-off-by: Bartlomiej Sieka <tur@semihalf.com>
Signed-off-by: David Woodhouse <dwmw2@infradead.org>
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Use a single unlock address, adjust it for the device type in the
knowledge that it'll be adjusted back again. This has the desirable
effect of masking out the least significant bit of the address for x16
devices.
Signed-off-by: David Woodhouse <dwmw2@infradead.org>
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Having laid the code out so that it's easier to read instead of sticking
to the 80-column guideline even when it doesn't make sense, a bug is
immediately spotted... we were only checking _one_ of the unlock
addresses to see if it runs off the end of the map.
Signed-off-by: David Woodhouse <dwmw2@infradead.org>
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This should have no functional effects -- we've been ignoring all but
the first address in the array for a long time, and using it only to
indicate which device types are supported.
Signed-off-by: David Woodhouse <dwmw2@infradead.org>
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while running stress tests we have met cfi_cmdset_0001.c driver issue.
Working on multipartitional devices with erase suspend on write
feature enabled it is possible to get erase operation invoked on chip
with suspended erase. get_chip() looses information about earlier
suspended erase and new erase operation gets issued. New erase
operations report successful completion, but blocks remain dirty
causing, for example, JFFS2 error messages like:
...
Newly-erased block contained word 0x20031985 at offset 0x00200000
Newly-erased block contained word 0x20031985 at offset 0x00280000
Newly-erased block contained word 0x20031985 at offset 0x00240000
...
The patch below fixes that issue.
Signed-off-by: Alexander Belyakov <alexander.belyakov@intel.com>
Acked-by: Nicolas Pitre <nico@cam.org>
Signed-off-by: David Woodhouse <dwmw2@infradead.org>
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Signed-off-by: Alexey Korolev <akorolev@infradead.org>
Signed-off-by: David Woodhouse <dwmw2@infradead.org>
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Add support for the SST 39VF1601 flash chip.
Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: David Woodhouse <dwmw2@infradead.org>
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Convert CFI tables from Atmel cmdset_0001 chips to Intel format and set
BufWrite timeouts to 0 for Atmel cmdset_0001 and cmdset_0002 chips.
Some chips may indicate support for buffered writes even though they
only support dual-word writes.
The CFI fixup must run before fixup_use_write_buffers for this to work.
Signed-off-by: Håvard Skinnemoen <hskinnemoen@atmel.com>
Signed-off-by: David Woodhouse <dwmw2@infradead.org>
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