linux-toradex.git/drivers/mtd, branch v2.6.16.51

SPI/MTD: mtd_dataflash oops prevention

2007-01-09T02:23:31+00:00

Return a fault code if the Dataflash driver runs into a "no device present"
error when the MISO line has a pulldown (it currently expects a pullup), so
that rmmod won't oops.

Signed-off-by: David Brownell 
Signed-off-by: Adrian Bunk

[PATCH] MTD_NAND_SHARPSL and MTD_NAND_NANDSIM should be tristate's

2006-04-24T16:56:04+00:00

MTD_NAND=m and MTD_NAND_SHARPSL=y or MTD_NAND_NANDSIM=y are illegal
combinations that mustn't be allowed.

This patch fixes this bug by making MTD_NAND_SHARPSL and MTD_NAND_NANDSIM
tristate's.

Additionally, it fixes some whitespace damage at these options.

This patch was already included in Linus' tree.

Signed-off-by: Adrian Bunk 
Signed-off-by: Greg Kroah-Hartman

[PATCH] mtd_dataflash, fix block vs page erase

2006-03-14T15:57:17+00:00

Fix a bug in the block-erase optimization for Dataflash; it was using block
erase even for smaller segments that need page erase.

That wouldn't matter for JFFS2, which never erases less than one block
(sometimes several blocks), but for other callers it might.

Signed-off-by: David Brownell 
Acked-by: David Woodhouse 
Acked-by: Thomas Gleixner 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

[PATCH] "drivers/mtd/redboot.c: recognise a foreign byte sex partition table" update

2006-03-02T16:33:07+00:00

Sync up the recent redboot fix with MTD CVS.  It uses the correct swab()
functions.

Cc: John Bowler 
Cc: David Woodhouse 
Cc: Thomas Gleixner 
Cc: Martin Michlmayr 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

[PATCH] drivers/mtd/redboot.c: recognise a foreign byte sex partition table

2006-03-01T04:53:43+00:00

The RedBoot boot loader writes flash partition tables containing native
byte sex 32 bit values.  When booting an opposite byte sex kernel (e.g.  an
LE kernel from BE RedBoot) the current MTD driver fails to handle the
partition table and therefore is unable to generate the correct partition
map for the flash.

So far as I am aware this problem is ARM specific, because only ARM
supports software change of the CPU (memory system) byte sex, however the
partition table parsing is in generic MTD code.  The patch below has been
tested on NSLU2 (an IXP4XX based system) with a patch,
10-ixp4xx-copy-from.patch (submitted to linux-arm-kernel - it's ARM
specific) required to make the maps/ixp4xx.c driver work with an LE kernel.

Builds of the patched system are in the 'unstable' release of OpenSlug and
UcSlugC available from www.nslu2-linux.org.  These builds are BE, the
archives at www.nslu2-linux.org and www.handhelds.org (see
monotone.vanille.de) can be built LE (currently DISTRO targets
nslu-ltu.conf for LE thumb uclibc (32 bit kernel) and nslu2-lau.conf,
nslu2-lag.conf for LE arm uclibc/glibc) and this patch has been tested
extensively will both BE and LE systems on the NSLU2 (including swapping
between BE and LE by reflashing from both RedBoot and Linux).

The patch recognises that the FIS directory (the partition table) is
byte-reversed by examining the partition table size, which is known to be
one erase block (this is an assumption made elsewhere in redboot.c).  If
the size matches the erase block after byte swapping the value then
byte-reversal is assumed, if not no further action is taken.  The patched
code is fail safe; should redboot.c be changed to support a partition table
with a modified size field the test will fail and the partition table will
be assumed to have the host byte sex.

If byte-reversal is detected the patch byte swaps the remainder of the 32
bit fields in the copy of the table; this copy is then used to set up the
MTD partition map.

Signed-off-by: John Bowler 
Cc: David Woodhouse 
Cc: Thomas Gleixner 
Cc: Martin Michlmayr 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

[PATCH] cfi: init wait queue in chip struct

2006-02-24T22:31:37+00:00

Fix a kernel oops for Intel P30 flashes, where the wait queue head was not
initialized for the flchip struct, which in turn caused a crash at the
first read operation.

Signed-off-by: Thomas Gleixner 
Cc: 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

[PATCH] cfi_cmdset_0001: fix range for cache invalidation

2006-02-21T04:00:09+00:00

I found an issue in cfi_cmdset0001.c.  It is related to cache region
invalidation in the buffered write procedure.

The code performs cache invalidation from "cmd_addr" to "cmd_adr + len" in
do_write_buffer() while we modify region from "adr" to "adr+len".

This issue affects writes + reads of data by small chunks.

Signed-off-by: Nicolas Pitre 
Acked-by: Thomas Gleixner 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

[PATCH] arm: fix dependencies for MTD_XIP

2006-02-08T06:02:58+00:00

MTD_XIP depends on having working asm/mtd-xip.h; it's not just per-architecture
(arm-only, as current Kconfig would have it), but actually per-subarch as
well.  Introduced a new symbol (ARCH_MTD_XIP) set by arch Kconfig; MTD_XIP
depends on it.

Signed-off-by: Al Viro

[PATCH] Fix compilation errors in maps/dc21285.c

2006-02-03T16:32:01+00:00

  CC      drivers/mtd/maps/dc21285.o
drivers/mtd/maps/dc21285.c: In function `dc21285_copy_to_32':
drivers/mtd/maps/dc21285.c:113: error: invalid lvalue in increment
drivers/mtd/maps/dc21285.c: In function `dc21285_copy_to_16':
drivers/mtd/maps/dc21285.c:124: error: invalid lvalue in increment
drivers/mtd/maps/dc21285.c: In function `dc21285_copy_to_8':
drivers/mtd/maps/dc21285.c:134: error: invalid lvalue in increment
make[3]: *** [drivers/mtd/maps/dc21285.o] Error 1

Signed-off-by: Martin Michlmayr 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

[PATCH] tsunami_flash: fix "parse error before ';' token"

2006-02-01T16:53:10+00:00

Signed-off-by: Alexey Dobriyan 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds