14 Mar, 2011
1 commit
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* git://git.infradead.org/users/dwmw2/mtd-2.6.38:
mtd: add "platform:" prefix for platform modalias
mtd: mtd_blkdevs: fix double free on error path
mtd: amd76xrom: fix oops at boot when resources are not available
mtd: fix race in cfi_cmdset_0001 driver
mtd: jedec_probe: initialise make sector erase command variable
mtd: jedec_probe: Change variable name from cfi_p to cfi
11 Mar, 2011
6 commits
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Since 43cc71eed1250755986da4c0f9898f9a635cb3bf (platform: prefix MODALIAS
with "platform:"), the platform modalias is prefixed with "platform:".Signed-off-by: Axel Lin
Signed-off-by: Artem Bityutskiy
Signed-off-by: David Woodhouse
Cc: stable@kernel.org -
This one liner patch fixes double free that will occur if add_mtd_blktrans_dev
fails. On failure it frees the input argument, but all its users also free it
on error which is natural thing to do. Thus don't free it.All credit for finding that bug belongs to reporters of the bug in the android bugzilla
http://code.google.com/p/android/issues/detail?id=13761Commit message tweaked by Artem.
Signed-off-by: Maxim Levitsky
Signed-off-by: Artem Bityutskiy
Signed-off-by: David Woodhouse
Cc: stable@kernel.org -
For some unknown reasons resources needed by amd76xrom driver can be
unavailable. And instead of returning an error, the driver keeps going
and crash the kernel. This patch fixes the problem by making the driver
return -EBUSY if the resources are not available.Commit messages tweaked by Artem.
Reported-by: Russell Whitaker
Signed-off-by: Stanislaw Gruszka
Signed-off-by: Artem Bityutskiy
Signed-off-by: David Woodhouse
Cc: stable@kernel.org -
As inval_cache_and_wait_for_operation() drop and reclaim the lock
to invalidate the cache, some other thread may suspend the operation
before reaching the for(;;) loop. Therefore the loop must start with
checking the chip->state before reading status from the chip.Signed-off-by: Joakim Tjernlund
Acked-by: Michael Cashwell
Acked-by: Stefan Bigler
Signed-off-by: Artem Bityutskiy
Signed-off-by: David Woodhouse
Cc: stable@kernel.org -
In the commit 08968041bef437ec363623cd3218c2b083537ada
(mtd: cfi_cmdset_0002: make sector erase command variable)
introdused a field sector_erase_cmd. In the same commit initialisation
of cfi->sector_erase_cmd made in cfi_chip_setup()
(file drivers/mtd/chips/cfi_probe.c), so the CFI chip has no problem:...
cfi->cfi_mode = CFI_MODE_CFI;
cfi->sector_erase_cmd = CMD(0x30);
...But for the JEDEC chips this initialisation is not carried out,
so the JEDEC chips have sector_erase_cmd == 0.This patch adds the missing initialisation.
Signed-off-by: Antony Pavlov
Acked-by: Guillaume LECERF
Signed-off-by: David Woodhouse
CC: stable@kernel.org -
In the following commit, we'll need to use the CMD() macro in order to
fix the initialisation of the sector_erase_cmd field. That requires the
local variable to be called 'cfi', so change it first in a simple patch.Signed-off-by: Antony Pavlov
Acked-by: Guillaume LECERF
Signed-off-by: David Woodhouse
CC: stable@kernel.org
17 Feb, 2011
1 commit
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There are two spellings in use for 'freeze' + 'able' - 'freezable' and
'freezeable'. The former is the more prominent one. The latter is
mostly used by workqueue and in a few other odd places. Unify the
spelling to 'freezable'.Signed-off-by: Tejun Heo
Reported-by: Alan Stern
Acked-by: "Rafael J. Wysocki"
Acked-by: Greg Kroah-Hartman
Acked-by: Dmitry Torokhov
Cc: David Woodhouse
Cc: Alex Dubov
Cc: "David S. Miller"
Cc: Steven Whitehouse
30 Jan, 2011
1 commit
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This reverts commit a121f643993474548fe98144514c50dd4f3dbe76.
Unfortunately, this commit breaks UBIFS backward compatibility and
makes new UBIFS refuse older UBIFS-formatted media:UBIFS error: validate_sb: min. I/O unit mismatch: 8 in superblock, 64 real
Thus, we have to revert this patch and work on a better solution.
Reported-by: Holger Brunck
Signed-off-by: Artem Bityutskiy
18 Jan, 2011
1 commit
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* git://git.infradead.org/mtd-2.6: (59 commits)
mtd: mtdpart: disallow reading OOB past the end of the partition
mtd: pxa3xx_nand: NULL dereference in pxa3xx_nand_probe
UBI: use mtd->writebufsize to set minimal I/O unit size
mtd: initialize writebufsize in the MTD object of a partition
mtd: onenand: add mtd->writebufsize initialization
mtd: nand: add mtd->writebufsize initialization
mtd: cfi: add writebufsize initialization
mtd: add writebufsize field to mtd_info struct
mtd: OneNAND: OMAP2/3: prevent regulator sleeping while OneNAND is in use
mtd: OneNAND: add enable / disable methods to onenand_chip
mtd: m25p80: Fix JEDEC ID for AT26DF321
mtd: txx9ndfmc: limit transfer bytes to 512 (ECC provides 6 bytes max)
mtd: cfi_cmdset_0002: add support for Samsung K8D3x16UxC NOR chips
mtd: cfi_cmdset_0002: add support for Samsung K8D6x16UxM NOR chips
mtd: nand: ams-delta: drop omap_read/write, use ioremap
mtd: m25p80: add debugging trace in sst_write
mtd: nand: ams-delta: select for built-in by default
mtd: OneNAND: lighten scary initial bad block messages
mtd: OneNAND: OMAP2/3: add support for command line partitioning
mtd: nand: rearrange ONFI revision checking, add ONFI 2.3
...Fix up trivial conflict in drivers/mtd/Kconfig as per DavidW.
17 Jan, 2011
2 commits
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This patch fixes the mtdpart bug which allows users reading OOB past the
end of the partition. This happens because 'part_read_oob()' allows reading
multiple OOB areas in one go, and mtdparts does not validate the OOB
length in the request.Although there is such check in 'nand_do_read_oob()' in nand_base.c, but
it checks that we do not read past the flash chip, not the partition,
because in nand_base.c we work with the whole chip (e.g., mtd->size
in nand_base.c is the size of the whole chip). So this check cannot
be done correctly in nand_base.c and should be instead done in mtdparts.c.This problem was reported by Jason Liu and reproduced
with nandsim:$ modprobe nandsim first_id_byte=0x20 second_id_byte=0xaa third_id_byte=0x00 \
fourth_id_byte=0x15 parts=0x400,0x400
$ modprobe nandsim mtd_oobtest.ko dev=0
$ dmesg
= snip =
mtd_oobtest: attempting to read past end of device
mtd_oobtest: an error is expected...
mtd_oobtest: error: read past end of device
= snip =
mtd_oobtest: finished with 2 errorsReported-by: Jason Liu
Signed-off-by: Artem Bityutskiy
Signed-off-by: David Woodhouse -
Instead of splitting refcount between (per-cpu) mnt_count
and (SMP-only) mnt_longrefs, make all references contribute
to mnt_count again and keep track of how many are longterm
ones.Accounting rules for longterm count:
* 1 for each fs_struct.root.mnt
* 1 for each fs_struct.pwd.mnt
* 1 for having non-NULL ->mnt_ns
* decrement to 0 happens only under vfsmount lock exclusiveThat allows nice common case for mntput() - since we can't drop the
final reference until after mnt_longterm has reached 0 due to the rules
above, mntput() can grab vfsmount lock shared and check mnt_longterm.
If it turns out to be non-zero (which is the common case), we know
that this is not the final mntput() and can just blindly decrement
percpu mnt_count. Otherwise we grab vfsmount lock exclusive and
do usual decrement-and-check of percpu mnt_count.For fs_struct.c we have mnt_make_longterm() and mnt_make_shortterm();
namespace.c uses the latter in places where we don't already hold
vfsmount lock exclusive and opencodes a few remaining spots where
we need to manipulate mnt_longterm.Note that we mostly revert the code outside of fs/namespace.c back
to what we used to have; in particular, normal code doesn't need
to care about two kinds of references, etc. And we get to keep
the optimization Nick's variant had bought us...Signed-off-by: Al Viro
14 Jan, 2011
4 commits
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* 'for-2.6.38/core' of git://git.kernel.dk/linux-2.6-block: (43 commits)
block: ensure that completion error gets properly traced
blktrace: add missing probe argument to block_bio_complete
block cfq: don't use atomic_t for cfq_group
block cfq: don't use atomic_t for cfq_queue
block: trace event block fix unassigned field
block: add internal hd part table references
block: fix accounting bug on cross partition merges
kref: add kref_test_and_get
bio-integrity: mark kintegrityd_wq highpri and CPU intensive
block: make kblockd_workqueue smarter
Revert "sd: implement sd_check_events()"
block: Clean up exit_io_context() source code.
Fix compile warnings due to missing removal of a 'ret' variable
fs/block: type signature of major_to_index(int) to major_to_index(unsigned)
block: convert !IS_ERR(p) && p to !IS_ERR_NOR_NULL(p)
cfq-iosched: don't check cfqg in choose_service_tree()
fs/splice: Pull buf->ops->confirm() from splice_from_pipe actors
cdrom: export cdrom_check_events()
sd: implement sd_check_events()
sr: implement sr_check_events()
... -
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6: (41 commits)
fs: add documentation on fallocate hole punching
Gfs2: fail if we try to use hole punch
Btrfs: fail if we try to use hole punch
Ext4: fail if we try to use hole punch
Ocfs2: handle hole punching via fallocate properly
XFS: handle hole punching via fallocate properly
fs: add hole punching to fallocate
vfs: pass struct file to do_truncate on O_TRUNC opens (try #2)
fix signedness mess in rw_verify_area() on 64bit architectures
fs: fix kernel-doc for dcache::prepend_path
fs: fix kernel-doc for dcache::d_validate
sanitize ecryptfs ->mount()
switch afs
move internal-only parts of ncpfs headers to fs/ncpfs
switch ncpfs
switch 9p
pass default dentry_operations to mount_pseudo()
switch hostfs
switch affs
switch configfs
... -
* 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial: (43 commits)
Documentation/trace/events.txt: Remove obsolete sched_signal_send.
writeback: fix global_dirty_limits comment runtime -> real-time
ppc: fix comment typo singal -> signal
drivers: fix comment typo diable -> disable.
m68k: fix comment typo diable -> disable.
wireless: comment typo fix diable -> disable.
media: comment typo fix diable -> disable.
remove doc for obsolete dynamic-printk kernel-parameter
remove extraneous 'is' from Documentation/iostats.txt
Fix spelling milisec -> ms in snd_ps3 module parameter description
Fix spelling mistakes in comments
Revert conflicting V4L changes
i7core_edac: fix typos in comments
mm/rmap.c: fix comment
sound, ca0106: Fix assignment to 'channel'.
hrtimer: fix a typo in comment
init/Kconfig: fix typo
anon_inodes: fix wrong function name in comment
fix comment typos concerning "consistent"
poll: fix a typo in comment
...Fix up trivial conflicts in:
- drivers/net/wireless/iwlwifi/iwl-core.c (moved to iwl-legacy.c)
- fs/ext4/ext4.hAlso fix missed 'diabled' typo in drivers/net/bnx2x/bnx2x.h while at it.
-
This series aims to develop logging facility for enterprise use.
It is important to save kernel messages reliably on enterprise system
because they are helpful for diagnosing system.This series add kmsg_dump() to the paths loosing kernel messages. The use
case is the following.[Use case of reboot/poweroff/halt/emergency_restart]
My company has often experienced the followings in our support service.
- Customer's system suddenly reboots.
- Customers ask us to investigate the reason of the reboot.We recognize the fact itself because boot messages remain in
/var/log/messages. However, we can't investigate the reason why the
system rebooted, because the last messages don't remain. And off course
we can't explain the reason.We can solve above problem with this patch as follows.
Case1: reboot with command
- We can see "Restarting system with command:" or ""Restarting system.".Case2: halt with command
- We can see "System halted.".Case3: poweroff with command
- We can see " Power down.".Case4: emergency_restart with sysrq.
- We can see "Sysrq:" outputted in __handle_sysrq().Case5: emergency_restart with softdog.
- We can see "Initiating system reboot" in watchdog_fire().So, we can distinguish the reason of reboot, poweroff, halt and emergency_restart.
If customer executed reboot command, you may think the customer should
know the fact. However, they often claim they don't execute the command
when they rebooted system by mistake.No message remains on the current Linux kernel, so we can't show the proof
to the customer. This patch improves this situation.This patch:
Alters mtdoops and ramoops to perform their actions only for
KMSG_DUMP_PANIC, KMSG_DUMP_OOPS and KMSG_DUMP_KEXEC because they would
like to log crashes only.Signed-off-by: Seiji Aguchi
Cc: David Woodhouse
Cc: Marco Stornelli
Reviewed-by: Artem Bityutskiy
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
13 Jan, 2011
1 commit
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Signed-off-by: Al Viro
11 Jan, 2011
1 commit
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* 'next-devicetree' of git://git.secretlab.ca/git/linux-2.6: (29 commits)
of/flattree: forward declare struct device_node in of_fdt.h
ipmi: explicitly include of_address.h and of_irq.h
sparc: explicitly cast negative phandle checks to s32
powerpc/405: Fix missing #{address,size}-cells in i2c node
powerpc/5200: dts: refactor dts files
powerpc/5200: dts: Change combatible strings on localbus
powerpc/5200: dts: remove unused properties
powerpc/5200: dts: rename nodes to prepare for refactoring dts files
of/flattree: Update dtc to current mainline.
of/device: Don't register disabled devices
powerpc/dts: fix syntax bugs in bluestone.dts
of: Fixes for OF probing on little endian systems
of: make drivers depend on CONFIG_OF instead of CONFIG_PPC_OF
of/flattree: Add of_flat_dt_match() helper function
of_serial: explicitly include of_irq.h
of/flattree: Refactor unflatten_device_tree and add fdt_unflatten_tree
of/flattree: Reorder unflatten_dt_node
of/flattree: Refactor unflatten_dt_node
of/flattree: Add non-boottime device tree functions
of/flattree: Add Kconfig for EARLY_FLATTREE
...Fix up trivial conflict in arch/sparc/prom/tree_32.c as per Grant.
08 Jan, 2011
1 commit
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…t/npiggin/linux-npiggin
* 'vfs-scale-working' of git://git.kernel.org/pub/scm/linux/kernel/git/npiggin/linux-npiggin: (57 commits)
fs: scale mntget/mntput
fs: rename vfsmount counter helpers
fs: implement faster dentry memcmp
fs: prefetch inode data in dcache lookup
fs: improve scalability of pseudo filesystems
fs: dcache per-inode inode alias locking
fs: dcache per-bucket dcache hash locking
bit_spinlock: add required includes
kernel: add bl_list
xfs: provide simple rcu-walk ACL implementation
btrfs: provide simple rcu-walk ACL implementation
ext2,3,4: provide simple rcu-walk ACL implementation
fs: provide simple rcu-walk generic_check_acl implementation
fs: provide rcu-walk aware permission i_ops
fs: rcu-walk aware d_revalidate method
fs: cache optimise dentry and inode for rcu-walk
fs: dcache reduce branches in lookup path
fs: dcache remove d_mounted
fs: fs_struct use seqlock
fs: rcu-walk for path lookup
...
07 Jan, 2011
1 commit
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The problem that this patch aims to fix is vfsmount refcounting scalability.
We need to take a reference on the vfsmount for every successful path lookup,
which often go to the same mount point.The fundamental difficulty is that a "simple" reference count can never be made
scalable, because any time a reference is dropped, we must check whether that
was the last reference. To do that requires communication with all other CPUs
that may have taken a reference count.We can make refcounts more scalable in a couple of ways, involving keeping
distributed counters, and checking for the global-zero condition less
frequently.- check the global sum once every interval (this will delay zero detection
for some interval, so it's probably a showstopper for vfsmounts).- keep a local count and only taking the global sum when local reaches 0 (this
is difficult for vfsmounts, because we can't hold preempt off for the life of
a reference, so a counter would need to be per-thread or tied strongly to a
particular CPU which requires more locking).- keep a local difference of increments and decrements, which allows us to sum
the total difference and hence find the refcount when summing all CPUs. Then,
keep a single integer "long" refcount for slow and long lasting references,
and only take the global sum of local counters when the long refcount is 0.This last scheme is what I implemented here. Attached mounts and process root
and working directory references are "long" references, and everything else is
a short reference.This allows scalable vfsmount references during path walking over mounted
subtrees and unattached (lazy umounted) mounts with processes still running
in them.This results in one fewer atomic op in the fastpath: mntget is now just a
per-CPU inc, rather than an atomic inc; and mntput just requires a spinlock
and non-atomic decrement in the common case. However code is otherwise bigger
and heavier, so single threaded performance is basically a wash.Signed-off-by: Nick Piggin
06 Jan, 2011
20 commits
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"info->cmdset" gets dereferenced in __readid() so it needs to be
initialized earlier in the function. This bug was introduced in
18c81b1828f8 "mtd: pxa3xx_nand: remove the flash info in driver
structure".Cc: stable@kernel.org [2.6.37+]
Reported-and-tested-by: Sven Neumann
Signed-off-by: Dan Carpenter
Signed-off-by: David Woodhouse -
Previously we used mtd->writesize field to set UBI's minimal
I/O unit size. This sometimes caused UBIFS recovery issues
when mounting an uncleanly unmounted UBIFS partition on NOR
flash since mtd->writesize is 1 byte for NOR flash. The
MTD CFI driver however often performs writing multiple
bytes in one programming operation using the chip's write
buffer. We have to use the size of this write buffer as
a minimal I/O unit size for UBI on NOR flash to fix the
observed UBIFS recovery issues.Signed-off-by: Anatolij Gustschin
Signed-off-by: Artem Bityutskiy
Signed-off-by: David Woodhouse -
Propagate the writebufsize to the partition's MTD object so
that UBI can set correct value for it's minimal I/O size
using the writebufsize field of MTD object of the partition.By previous patches we added proper writebufsize field
initialization. Next patch can now change UBI to use
this field for setting the minimal I/O size.Signed-off-by: Anatolij Gustschin
Signed-off-by: Artem Bityutskiy
Signed-off-by: David Woodhouse -
Initialize mtd->writebufsize to be equal to mtd->writesize.
Signed-off-by: Anatolij Gustschin
Signed-off-by: Artem Bityutskiy
Signed-off-by: David Woodhouse -
Initialize mtd->writebufsize to be equal to mtd->writesize.
Signed-off-by: Anatolij Gustschin
Signed-off-by: Artem Bityutskiy
Signed-off-by: David Woodhouse -
Initialize mtd->writebufsize to the value obtained
by CFI query command at probe time.Signed-off-by: Anatolij Gustschin
Signed-off-by: Artem Bityutskiy
Signed-off-by: David Woodhouse -
Prevent OneNAND's voltage regulator from going to sleep while
OneNAND is in use, by explicitly enabling and disabling the
regulator as appropriate.Signed-off-by: Adrian Hunter
Signed-off-by: David Woodhouse -
Add enable / disable methods called from get_device() / release_device().
These can be used, for example, to allow the driver to prevent the voltage
regulator from being put to sleep while OneNAND is in use.Signed-off-by: Adrian Hunter
Signed-off-by: David Woodhouse -
The last byte of the ID should be zero for this chip. Was added in
commit d0e8c47c58575b9131e786edb488fd029eba443e . Reported by Tomi
Varjo.Signed-off-by: Aleksandr Koltsoff
Signed-off-by: David Woodhouse -
See commit: c0cbfd0e81d879a950ba6f0df3f75ea30c5ab16e
Using __nand_correct_data() helper function, this driver can read 512
byte (with 6 byte ECC) at a time.This is correct, but not more:
With NAND chips providing page sizes > 512 Bytes
chip->ecc.bytes are calculated > 6 in txx9ndfmc_nand_scan.
According the data sheet there are (only) 6 bytes ECC available.After applying the patch a Hynix 512M*8 with 2KiB page size could be
successfully formatted and used with an ubifs file system.Signed-off-by: Ralf Roesch
Signed-off-by: Artem Bityutskiy
Acked-by: Atsushi Nemoto
Signed-off-by: David Woodhouse -
These chips report CFI v3.3 [1], so patch them on the fly to the more
correct v1.3.
Discussed and tested by the OpenWRT people [2].[1] http://www.samsung.com/global/system/business/semiconductor/product/2007/6/11/NORFlash/32Mbit/K8D3216UBC/ds_K8D3x16UxC_rev17.pdf
[2] https://dev.openwrt.org/ticket/866Signed-off-by: Guillaume LECERF
Acked-by: Wolfram Sang
Signed-off-by: David Woodhouse -
These chips report CFI v0.0 [1], so extend cfi_fixup_major_minor()
to patch all Samsung chips from 0.0 to 1.0.
Discussed and tested by the OpenWRT people [2].[1] http://www.samsung.com/global/system/business/semiconductor/product/2007/6/11/NORFlash/64Mbit/K8D6316UTM/ds_K8D6x16UxM_rev16.pdf
[2] https://dev.openwrt.org/ticket/7348Signed-off-by: Guillaume LECERF
Acked-by: Wolfram Sang
Signed-off-by: David Woodhouse -
There is a common requirement for not using OMAP specific omap_readw() /
omap_writew() function calls in drivers/, but replace them with
readw() / writew() on ioremap()ped addresses passed from arch/ instead.The patch implements this idea for the Amstrad Delta NAND driver. To be
able to use the modified driver, the board file is updated with the
platform device I/O resource declaration, which is passed from there.Created and tested against linux-2.6.37-rc5, on top of recent patch
'MTD: NAND: ams-delta: convert to platform driver'.Signed-off-by: Janusz Krzysztofik
Acked-by: Tony Lindgren
Signed-off-by: Artem Bityutskiy
Signed-off-by: David Woodhouse -
Add a DEBUG(MTD_DEBUG_LEVEL2, ..) trace at beginning of sst_write() function as
it is done in m25p80_write() function.Signed-off-by: Nicolas Ferre
Signed-off-by: David Woodhouse -
Now that the Amstrad Delta NAND driver is converted to a platform driver,
which prevents it from interfering with other unrelated hardware in multiple
OMAP1 cpu and machine configurations, it can be automatically configured for
being built into the kernel if the Amstrad Delta board is also selected.Signed-off-by: Janusz Krzysztofik
Signed-off-by: David Woodhouse -
Initial bad blocks are normal but the messages look like
errors. Make the messages less scary, make the main
message an informational message not a warning, make the
message displaying registers a debug message and include
the address there instead of in the informational message.Signed-off-by: Adrian Hunter
Acked-by: Kyungmin Park
Signed-off-by: Artem Bityutskiy
Signed-off-by: David Woodhouse -
Add the ability to parse MTD partition information from the
kernel command line.Note that a pointless BUG_ON is removed, as are redundant
calls to 'del_mtd_partitions()' and 'del_mtd_device()'
because they are also done by 'onenand_release()'.Finally note that 'add_mtd_device()' returns 1 on failure
so the error condition was incorrect.Signed-off-by: Adrian Hunter
Signed-off-by: Artem Bityutskiy
Signed-off-by: David Woodhouse -
In checking for the ONFI revision, the first conditional (for checking
"unsupported" ONFI) seems unnecessary. All ONFI revisions should be
backwards-compatible; even if this is not the case on some newer ONFI
revision, it should simply fail the second version-checking if-else block
(i.e., the bit-fields for 1.0, 2.0, etc. would not be set to 1). Thus, we
move our "unsupported" condition after having checked each bit field.Also, it's simple enough to add a condition for ONFI revision 2.3. Note
that this does *NOT* mean we handle all new features of ONFI versions
above 1.0.Signed-off-by: Brian Norris
Acked-by: Florian Fainelli
Signed-off-by: David Woodhouse -
We have the order of the conditional wrong for choosing the ONFI chip name
vs. the ID table name. Without this fix, we will almost *always* choose a
NULL string to print out instead of the correct one.This has already been suggested by Matthieu Castet.
Signed-off-by: Brian Norris
Acked-by: Florian Fainelli
Signed-off-by: David Woodhouse -
In its current form, the driver may interfere with different hardware on
different boards if built into the kernel, hence is not suitable for
inclusion into a defconfig, inteded to be usable with multiple OMAP1 cpu and
machine types.Convert it to a platform driver, that should be free from this issue.
Created and tested against linux-2.6.37-rc5 on Amstrad Delta.
Signed-off-by: Janusz Krzysztofik
Acked-by: Tony Lindgren
Signed-off-by: Artem Bityutskiy
Signed-off-by: David Woodhouse
