David Woodhouse [Sat, 30 Oct 2010 11:39:21 +0000 (12:39 +0100)]
mtd: Remove redundant mutex from mtd_blkdevs.c
In commit 2a48fc0ab24241755dc93bfd4f01d68efab47f5a ('block: autoconvert
trivial BKL users to private mutex'), Arnd replaced the BKL usage with a
mutex. However, Maxim has already provided a better fix in commit 480792b7bf188c29b8d4b10fee65c3a06ec5dbf7 ('mtd: blktrans: kill BKL'),
which was simply to remove the BKL without replacing it — since he'd
already made it do all necessary locking for itself.
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
The individual CFI geometry options were carefully set up to get sane
default values if the CFI_ADV_OPTIONS wasn't set, and it wasn't
appropriate to move them into an if/endif block.
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Linus Torvalds [Mon, 25 Oct 2010 15:19:14 +0000 (08:19 -0700)]
Merge branch 'next-devicetree' of git://git.secretlab.ca/git/linux-2.6
* 'next-devicetree' of git://git.secretlab.ca/git/linux-2.6:
mtd/m25p80: add support to parse the partitions by OF node
of/irq: of_irq.c needs to include linux/irq.h
of/mips: Cleanup some include directives/files.
of/mips: Add device tree support to MIPS
of/flattree: Eliminate need to provide early_init_dt_scan_chosen_arch
of/device: Rework to use common platform_device_alloc() for allocating devices
of/xsysace: Fix OF probing on little-endian systems
of: use __be32 types for big-endian device tree data
of/irq: remove references to NO_IRQ in drivers/of/platform.c
of/promtree: add package-to-path support to pdt
of/promtree: add of_pdt namespace to pdt code
of/promtree: no longer call prom_ functions directly; use an ops structure
of/promtree: make drivers/of/pdt.c no longer sparc-only
sparc: break out some PROM device-tree building code out into drivers/of
of/sparc: convert various prom_* functions to use phandle
sparc: stop exporting openprom.h header
powerpc, of_serial: Endianness issues setting up the serial ports
of: MTD: Fix OF probing on little-endian systems
of: GPIO: Fix OF probing on little-endian systems
Ralf Baechle [Sun, 24 Oct 2010 21:23:50 +0000 (22:23 +0100)]
MIPS: MT: Fix build error iFPU affinity code
Commit b0ae19811375 ("security: remove unused parameter from
security_task_setscheduler()") broke the build of
arch/mips/kernel/mips-mt-fpaff.c. The function arguments were
unnecessary, not the semicolon ...
Linus Torvalds [Mon, 25 Oct 2010 15:05:29 +0000 (08:05 -0700)]
Merge branch 'ieee1394-removal' of git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394-2.6
* 'ieee1394-removal' of git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394-2.6:
ieee1394: remove the old IEEE 1394 driver stack
ieee1394: move init_ohci1394_dma to drivers/firewire/
Fix trivial change/delete conflict: drivers/ieee1394/eth1394.c is
getting removed, but was modified by the networking merge.
Yoshihisa Abe [Mon, 25 Oct 2010 06:03:45 +0000 (02:03 -0400)]
Coda: push BKL regions into coda_upcall()
Now that shared inode state is locked using the cii->c_lock, the BKL is
only used to protect the upcall queues used to communicate with the
userspace cache manager. The remaining state is all local and we can
push the lock further down into coda_upcall().
Yoshihisa Abe [Mon, 25 Oct 2010 06:03:44 +0000 (02:03 -0400)]
Coda: add spin lock to protect accesses to struct coda_inode_info.
We mostly need it to protect cached user permissions. The c_flags field
is advisory, reading the wrong value is harmless and in the worst case
we hit a slow path where we have to make an extra upcall to the
userspace cache manager when revalidating a dentry or inode.
* git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-2.6: (110 commits)
sh: i2c-sh7760: Replase from ctrl_* to __raw_*
sh: clkfwk: Shuffle around to match the intc split up.
sh: clkfwk: modify for_each_frequency end condition
sh: fix clk_get() error handling
sh: clkfwk: Fix fault in frequency iterator.
sh: clkfwk: Add a helper for rate rounding by divisor ranges.
sh: clkfwk: Abstract rate rounding helper.
sh: clkfwk: support clock remapping.
sh: pci: Convert to upper/lower_32_bits() helpers.
sh: mach-sdk7786: Add support for the FPGA SRAM.
sh: Provide a generic SRAM pool for tiny memories.
sh: pci: Support secondary FPGA-driven PCIe clocks on SDK7786.
sh: pci: Support slot 4 routing on SDK7786.
sh: Fix up PMB locking.
sh: mach-sdk7786: Add support for fpga gpios.
sh: use pr_fmt for clock framework, too.
sh: remove name and id from struct clk
sh: free-without-alloc fix for sh_mobile_lcdcfb
sh: perf: Set up perf_max_events.
sh: perf: Support SH-X3 hardware counters.
...
Fix up trivial conflicts (perf_max_events got removed) in arch/sh/kernel/perf_event.c
Linus Torvalds [Mon, 25 Oct 2010 14:44:27 +0000 (07:44 -0700)]
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/gerg/m68knommu
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/gerg/m68knommu: (21 commits)
m68knommu: convert to using tracehook_report_syscall_*
m68knommu: some boards use fixed phy for FEC ethernet
m68knommu: support the external GPIO based interrupts of the 5272
m68knommu: mask of vector bits in exception word properly
m68knommu: change to new flag variables
m68knommu: Fix MCFUART_TXFIFOSIZE for m548x.
m68knommu: add basic mmu-less m548x support
m68knommu: .gitignore vmlinux.lds
m68knommu: stop using __do_IRQ
m68knommu: rename PT_OFF_VECTOR to PT_OFF_FORMATVEC.
m68knommu: add support for Coldfire 547x/548x interrupt controller
m68k{nommu}: Remove unused DEFINE's from asm-offsets.c
m68knommu: whitespace cleanup in 68328/entry.S
m68knommu: Document supported chips in intc-2.c and intc-simr.c.
m68knommu: fix strace support for 68328/68360
m68knommu: fix default starting date
arch/m68knommu: Removing dead 68328_SERIAL_UART2 config option
arch/m68knommu: Removing dead RAM_{16,32}_MB config option
arch/m68knommu: Removing dead M68KFPU_EMU config option
arch/m68knommu: Removing dead RELOCATE config option
...
P4080/mtd: Fix the freescale lbc issue with 36bit mode
When system uses 36bit physical address, res.start is 36bit
physical address. But the function of in_be32 returns 32bit
physical address. Then both of them compared each other is
wrong. So by converting the address of res.start into
the right format fixes this issue.
Signed-off-by: Lan Chunhe-B25806 <b25806@freescale.com> Signed-off-by: Roy Zang <tie-fei.zang@freescale.com> Reviewed-by: Anton Vorontsov <cbouatmailru@gmail.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Signed-off-by: Lan Chunhe-B25806 <b25806@freescale.com> Signed-off-by: Roy Zang <tie-fei.zang@freescale.com> Reviewed-by: Anton Vorontsov <cbouatmailru@gmail.com> Cc: Wood Scott-B07421 <B07421@freescale.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Ping Cheng [Mon, 25 Oct 2010 04:53:40 +0000 (21:53 -0700)]
Input: wacom - specify Cinitq supported tools
Cintiq, being a display tablet, doesn't have mouse and associated BTN_s.
Make sure we do not specify them when registering Cintiq's input device
so that userland can retrieve the exact tool set the device supports.
When writing in RAW mode this is called with an ops struct on the stack
of mtdchar.c:mtd_write() which does not initialise ops->ooboffs, so it
is garbage and fails this test.
This test does not make sense if ops->oobbuf is NULL, which it is in the
RAW write path, so include that in the test.
Signed-off-by: Jon Povey <jon.povey@racelogic.co.uk> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Maxim Levitsky [Fri, 15 Oct 2010 15:20:43 +0000 (17:20 +0200)]
mtd: allow to unload the mtdtrans module if its block devices aren't open
Now it once again possible to remove mtdtrans module.
You still need to ensure that block devices of that module aren't mounted.
This is due to the fact that as long as a block device is open, it still exists,
therefore if we were to allow module removal, this block device might became used again.
This time in addition to code review, I also made the code
pass some torture tests like module reload in a loop + read in a loop +
card insert/removal all at same time.
The blktrans_open/blktrans_release don't take the mtd table lock because:
While device is added (that includes execution of add_mtd_blktrans_dev)
the lock is already taken
Now suppose the device will never be removed. In this case even if we have changes
in mtd table, the entry that we need will stay exactly the same. (Note that we don't
look at table at all, just following private pointer of block device).
Now suppose that someone tries to remove the mtd device.
This will be propagated to trans driver which _ought_ to call del_mtd_blktrans_dev
which will take the per device lock, release the mtd device and set trans->mtd = NULL.
>From this point on, following opens won't even be able to know anything about that mtd device
(which at that point is likely not to exist)
Also the same care is taken not to trip over NULL mtd pointer in blktrans_dev_release.
Mike Frysinger [Sat, 16 Oct 2010 22:31:14 +0000 (18:31 -0400)]
mtd: maps: gpio-addr-flash: fix warnings and make more portable
As reported on lkml, building this module for HIMEM systems spews warnings
about mismatch in pointer types. Further, we need to use ioremap() in order
to properly access the flash memory on most systems rather than just doing
it directly.
Reported-by: Alan Cox <alan@linux.intel.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Mike Frysinger [Sat, 16 Oct 2010 22:26:59 +0000 (18:26 -0400)]
mtd: Blackfin NFC: fix badblock location with BootROM OOB
The bbt structure isn't actually used, just the badblockpos. This lets
the driver correctly handle badblocks with the different OOB layout with
certain sized flashes. Previously, the blocks would all be reported as
bad and be completely unusable.
Signed-off-by: Mike Frysinger <vapier@gentoo.org> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Wolfram Sang [Sat, 16 Oct 2010 12:56:22 +0000 (14:56 +0200)]
mtd: cfi_cmdset_0002: code cleanups
- remove disabled code (hasn't been touched since the beginning of git
and should be reimplemented if really needed)
- convert remaining c++-comments to plain c-style
Signed-off-by: Wolfram Sang <w.sang@pengutronix.de> Acked-by: Guillaume LECERF <glecerf@gmail.com> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
For 4Gib non-DDP chip it does not follow that it is always 4KiB page chip.
The number of data buffers is checked and if it is equal to 1
we suppose that it is 4KiB page onenand chip.
Signed-off-by: Roman Tereshonkov <roman.tereshonkov@nokia.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>
Stefan Roese [Fri, 8 Oct 2010 12:41:27 +0000 (14:41 +0200)]
mtd: physmap_of: Loop through all "reg" tuples for mapping
This patch changes the loop over the "reg" tuples to not exit
directly upon of_address_to_resource() failure but to continue
with the next "reg" tuple instead. This failure could be due to
size = 0, which might be passed via the device-tree.
This is needed for boards, where a "reg" tuple might have size 0
(of_address_to_resource() returns with EINVAL when size = 0).
This could be the case on boards with runtime detection of
multiple NOR flash configurations where the detected flash size
is inserted into the dtb in U-Boot.
Signed-off-by: Stefan Roese <sr@denx.de> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Daniel Drake [Thu, 7 Oct 2010 18:14:02 +0000 (19:14 +0100)]
jffs2: Dynamically choose inocache hash size
When JFFS2 is used for large volumes, the mount times are quite long.
Increasing the hash size provides a significant speed boost on the OLPC
XO-1 laptop.
Add logic that dynamically selects a hash size based on the size of
the medium. A 64mb medium will result in a hash size of 128, and a 512mb
medium will result in a hash size of 1024.
Signed-off-by: Daniel Drake <dsd@laptop.org> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
- *var instead of * var
- proper multiline comment
- func(args) instead of func (args)
- 80 lines
So from
|total: 2 errors, 37 warnings, 654 lines checked
we got to one warning.
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Ian Munsie [Fri, 1 Oct 2010 07:06:08 +0000 (17:06 +1000)]
mtd: Fix endianness issues from device tree
This patch adds the appropriate conversions to correct the endianness
issues in the MTD driver whenever it accesses the device tree (which is
always big endian).
Signed-off-by: Ian Munsie <imunsie@au1.ibm.com> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
I used this to check the BBT on flash together with a hack in mtdchar in
order to read bad blocks.
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
it will create an empty BBT table without considering vendor's BBT
information. Vendor's information may be unavailable if the NAND
controller has a different DATA & OOB layout or this information may be
allready purged.
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
The first (sixt) byte in the OOB area contains vendor's bad block
information. During identification of the NAND chip this information is
collected by scanning the complete chip.
The option NAND_USE_FLASH_BBT is used to store this information in a sector so
we don't have to scan the complete flash. Unfortunately the code stores
a marker in order to recognize the BBT in the OOB area. This will fail
if the OOB area is completely used for ECC.
This patch introduces the option NAND_USE_FLASH_BBT_NO_OOB which has to be
used with NAND_USE_FLASH_BBT. It will then store BBT on flash without
touching the OOB area. The BBT format on flash remains same except the
first page starts with the recognition pattern followed by the version byte.
This change was tested in nandsim and it looks good so far :)
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
MLC NAND Flash has a different cell structure and differs in
functioning than the SLC NAND Flash. Hence we are considering it as
a different Flash type.
Mike Frysinger [Thu, 23 Sep 2010 02:52:33 +0000 (22:52 -0400)]
jffs2: drop unused model argument
The jffs2 compression framework provides a "model" argument when
compressing and decompressing, but the caller always passes in NULL
and the callees never use it. So punt this useless overhead.
Signed-off-by: Mike Frysinger <vapier@gentoo.org> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Add support for mtd repartition based on the block
device BLKPG interface:
BLKPG_ADD_PARTITION - for partition creation;
BLKPG_DEL_PARTITION - for partition delete
The usage is based on BLKPG ioctl called with
struct blkpg_ioctl_arg argument which includes the
reference to struct blkpg_partition discribing the
partition offset and length.
Disadvantage: there is no implementation for mtd
flags control. The flags are always borrowed from
the master device.
Signed-off-by: Roman Tereshonkov <roman.tereshonkov@nokia.com> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
This is the same driver submitted by ST Micros SPEAr team but
generalized and tested on the ST-Ericsson U300. It probably
easily works on the NHK8815 too.
mtd: nand_base: do not cache pages with uncorrectable ECC errors
Currently MTD caches the last read NAND page, even if there was an uncorrectable ECC
error. This patch prevents caching in case of uncorrectable ECC errors. The reason
is that we want to allow the user to re-read the NAND page several times. In case of
unstable bits re-trying may help.
Moreover, current behavior is wrong because the first read returns -EBADMSG (correctly)
but the second read succeeds and incorrectly returns 0 (because we read from the cache).
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
mtd: add Broadcom BCM63xx image tag partition parser
This patch adds support for parsing Broadcom BCM63xx image tag format and
creating MTD partitions accordingly. This driver is a platform_device which
can be instantiated accordingly by bcm63xx board support code.
Signed-off-by: Daniel Dickinson <cshore@csolve.net> Signed-off-by: Mike Albon <malbon@openwrt.org> Signed-off-by: Florian Fainelli <florian@openwrt.org> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Dan Carpenter [Wed, 8 Sep 2010 19:39:56 +0000 (21:39 +0200)]
mtd: sanity check ioctl input
If "ur_idx" is wrong we could go past the end of the array. The
"ur_idx" comes from root so it's not a huge deal, but adding a sanity
check makes the code more robust.
Signed-off-by: Dan Carpenter <error27@gmail.com> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Roy Zang [Wed, 8 Sep 2010 08:47:55 +0000 (16:47 +0800)]
mtd: fix the build warning for fsl_upm.c
Fix the build warning:
drivers/mtd/nand/fsl_upm.c: In function 'fun_chip_init':
drivers/mtd/nand/fsl_upm.c:190: warning: format '%x' expects type 'unsigned int', but argument 3 has type 'resource_size_t'
Signed-off-by: Roy Zang <tie-fei.zang@freescale.com> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
mtd: fix almost all checkpatch warnings in nand_base.c
Only 3 warnings are left, one is off by one character, but splitting the line
would reduce the readability. One is for a for loop statement, which would also
not improve readability. The last one is a false positive on a test.
Artem: it is much easier to verify patches against nand_base.c with
checkpatch.pl when nand_base.c itself does not have so many
checkpatch.pl warnings.
Artem: it is much easier to verify patches against nand_base.c with
checkpatch.pl when nand_base.c itself does not have so many
checkpatch.pl warnings.
mtd: m25p80: Add support for two new Spansion SPI devices (S25FL-K)
This patch adds support for Spansion S25FL016K and S25FL064K SPI flash.
It has been tested with physical devices. Note that both parts exhibit
a Winbond manufacturer ID so they might also be added to that section.
Signed-off-by: Gernot Hoyler <Gernot.Hoyler@spansion.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
mtd: nand: split ONFI detection logic to its own function
In order to reduce the indentation and improve the readability of nand_get_
flash_type, split the ONFI detection logic to its own function. The detection
logic inside nand_flash_detect_onfi is also rewritten to allow for less
indentation.
Florian Fainelli [Mon, 30 Aug 2010 16:32:24 +0000 (18:32 +0200)]
mtd: nand: add support for reading ONFI parameters from NAND device
This patch adds support for reading NAND device ONFI parameters and use
the ONFI informations to define its geometry. In case the device supports
ONFI, the onfi_version field in struct nand_chip contains the version (BCD)
and the onfi_params structure can be used by drivers to set up timings and
such. We currently only support ONFI 1.0 parameters.
Signed-off-by: Brian Norris <norris@broadcom.com> Signed-off-by: Matthieu Castet <matthieu.castet@parrot.com> Signed-off-by: Maxime Bizon <mbizon@freebox.fr> Signed-off-by: Florian Fainelli <ffainelli@freebox.fr> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Brian Norris [Fri, 20 Aug 2010 17:50:43 +0000 (10:50 -0700)]
mtd: nand: Samsung MLC - new OOB sizes
There are some additions to the detection scheme used by Samsung
MLC NAND. These simple changes to support the 400- and 436-byte OOB
are found in the following data sheet:
Samsung K9GBG08U0M (p.40)
Signed-off-by: Brian Norris <norris@broadcom.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Dan Carpenter [Tue, 24 Aug 2010 11:56:27 +0000 (13:56 +0200)]
mtd: pcmciamtd: remove dead code
This code isn't reachable. I looked through the git history and it
hasn't been reachable for years. Someone removed the label to silence
gcc's unused label warning but these few lines accidentally got left
behind.
Signed-off-by: Dan Carpenter <error27@gmail.com> Acked-by: Dominik Brodowski <linux@dominikbrodowski.net> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Lei Wen [Tue, 17 Aug 2010 09:25:57 +0000 (17:25 +0800)]
mtd: pxa3xx_nand: remove the flash info in driver structure
After probe, all info already transfer to driver structure.
There is no need to keep the original flash info.
So that we could safely free the flash info in memory, which may grows
larger when more flash is suported.
Signed-off-by: Lei Wen <leiwen@marvell.com> Signed-off-by: Haojian Zhuang <haojian.zhuang@marvell.com> Acked-by: Eric Miao <eric.y.miao@gmail.com> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Lei Wen [Wed, 18 Aug 2010 10:00:03 +0000 (18:00 +0800)]
mtd: pxa3xx_nand: introduce default timing to reduce read id times
We certainly don't need to send read id command times by times, since
we already know what the id is after the first read id...
So create a default timing which could ensure it would successfully read
id out all supported chip. Then follow the build-in table to reconfigure
the timing.
Signed-off-by: Lei Wen <leiwen@marvell.com> Signed-off-by: Haojian Zhuang <haojian.zhuang@marvell.com> Acked-by: Eric Miao <eric.y.miao@gmail.com> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Lei Wen [Tue, 17 Aug 2010 05:50:23 +0000 (13:50 +0800)]
mtd: pxa3xx_nand: condense the flash definition
Adding a new flash definition would need less code.
Keep the platform passing flash definition method.
If one flash is both defined in platform data and builtin table,
driver would select the one from platform data first.
By this way, platform could select the timing most suit for itself,
not need to follow the common settings.
Signed-off-by: Lei Wen <leiwen@marvell.com> Signed-off-by: Haojian Zhuang <haojian.zhuang@marvell.com> Acked-by: Eric Miao <eric.y.miao@gmail.com> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Brian Norris [Fri, 20 Aug 2010 19:36:12 +0000 (12:36 -0700)]
mtd: nand: support new Toshiba SLC
Toshiba does not use ONFI for their NAND flash. So we have to continue
to add new IDs used by Toshiba devices as well as heuristic detection
for scanning the 2nd page for a BBM. This is a relatively harmless
start at supporting many of them.
These chips mostly follow the same ID fields of previous generations,
but there is a need for a tweak.
These chips introduce a strange 576 byte OOB (that's 36 bytes per
512 bytes of page). In the preliminary data, Toshiba has not
defined exactly how their ID strings should decode. In the future,
a new tweak must be added.
Data is taken from, among others, Toshiba TC58TxG4S2FBAxx
Signed-off-by: Brian Norris <norris@broadcom.com> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Remove the MTD!=n dependency since that is handled by drivers/mtd/Kconfig.
Simplify the dependency checks for mtd/chips by using if/endif blocks. Remove
all default n since that is the Kconfig default.
Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Brian Norris [Mon, 20 Sep 2010 06:57:12 +0000 (23:57 -0700)]
mtd: edit comments on deprecation of ioctl ECCGETLAYOUT
There were some improvements and additions necessary in the
comments explaining of the expansion of nand_ecclayout, the
introduction of nand_ecclayout_user, and the deprecation of the
ioctl ECCGETLAYOUT.
Also, I found a better placement for the macro MTD_MAX_ECCPOS_ENTRIES;
next to the definition of MTD_MAX_OOBFREE_ENTRIES in mtd-abi.h. The macro
is really only important for the ioctl code (found in drivers/mtd/mtdchar.c)
but since there are small edits being made to the user-space header, I
figured this is a better location.
Signed-off-by: Brian Norris <computersforpeace@gmail.com> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
struct nand_ecclayout is too small for many new chips; OOB regions can be as
large as 448 bytes and may increase more in the future. Thus, copying that
struct to user-space with the ECCGETLAYOUT ioctl is not a good idea; the ioctl
would have to be updated every time there's a change to the current largest
size.
Instead, the old nand_ecclayout is renamed to nand_ecclayout_user and a
new struct nand_ecclayout is created that can accomodate larger sizes and
expand without affecting the user-space. struct nand_ecclayout can still
be used in board drivers without modification -- at least for now.
A new function is provided to convert from the new to the old in order to
allow the deprecated ioctl to continue to work with truncated data. Perhaps
the ioctl, the conversion process, and the struct nand_ecclayout_user can be
removed altogether in the future.
Note: There are comments in nand/davinci_nand.c::nand_davinci_probe()
regarding this issue; this driver (and maybe others) can be updated to
account for extra space. All kernel drivers can use the expanded
nand_ecclayout as a drop-in replacement and ignore its benefits.
Signed-off-by: Brian Norris <computersforpeace@gmail.com> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Brian Norris [Thu, 19 Aug 2010 15:11:02 +0000 (08:11 -0700)]
mtd: nand: spansion S30MLxxxP support
Some Spansion chips have a method for determining eraseblock size that
is incompatible with similar ID chips of other sizes. This implements
some heuristic detection of these differences.
This patch checks for a 5-byte ID with trailing zeros as well as a
512-byte page size to ensure that chips are not misdetected as the
S30MLxxxP ORNAND series.
[Tweaked by Artem a bit]
Signed-off-by: Brian Norris <norris@broadcom.com> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Linus Torvalds [Sun, 24 Oct 2010 20:06:57 +0000 (13:06 -0700)]
Merge branch 'devel' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/edac
* 'devel' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/edac: (25 commits)
i7300_edac: Properly initialize per-csrow memory size
V4L/DVB: i7300_edac: better initialize page counts
MAINTAINERS: Add maintainer for i7300-edac driver
i7300-edac: CodingStyle cleanup
i7300_edac: Improve comments
i7300_edac: Cleanup: reorganize the file contents
i7300_edac: Properly detect channel on CE errors
i7300_edac: enrich FBD error info for corrected errors
i7300_edac: enrich FBD error info for fatal errors
i7300_edac: pre-allocate a buffer used to prepare err messages
i7300_edac: Fix MTR x4/x8 detection logic
i7300_edac: Make the debug messages coherent with the others
i7300_edac: Cleanup: remove get_error_info logic
i7300_edac: Add a code to cleanup error registers
i7300_edac: Add support for reporting FBD errors
i7300_edac: Properly detect the type of error correction
i7300_edac: Detect if the device is on single mode
i7300_edac: Adds detection for enhanced scrub mode on x8
i7300_edac: Clear the error bit after reading
i7300_edac: Add error detection code for global errors
...
It has numerous issues with the cleanup path and non-elevator
devices. Revert it for now so we can come up with a clean
version without rushing things.
Linus Torvalds [Sun, 24 Oct 2010 19:47:55 +0000 (12:47 -0700)]
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/penberg/slab-2.6
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/penberg/slab-2.6: (27 commits)
SLUB: Fix memory hotplug with !NUMA
slub: Move functions to reduce #ifdefs
slub: Enable sysfs support for !CONFIG_SLUB_DEBUG
SLUB: Optimize slab_free() debug check
slub: Move NUMA-related functions under CONFIG_NUMA
slub: Add lock release annotation
slub: Fix signedness warnings
slub: extract common code to remove objects from partial list without locking
SLUB: Pass active and inactive redzone flags instead of boolean to debug functions
slub: reduce differences between SMP and NUMA
Revert "Slub: UP bandaid"
percpu: clear memory allocated with the km allocator
percpu: use percpu allocator on UP too
percpu: reduce PCPU_MIN_UNIT_SIZE to 32k
vmalloc: pcpu_get/free_vm_areas() aren't needed on UP
SLUB: Fix merged slab cache names
Slub: UP bandaid
slub: fix SLUB_RESILIENCY_TEST for dynamic kmalloc caches
slub: Fix up missing kmalloc_cache -> kmem_cache_node case for memoryhotplug
slub: Add dummy functions for the !SLUB_DEBUG case
...
projects / karo-tx-linux.git / log