Jamie Iles [Mon, 23 May 2011 09:23:03 +0000 (10:23 +0100)]
mtd: h720x-flash: convert to mtd_device_register()
Convert to mtd_device_register() and remove the CONFIG_MTD_PARTITIONS
preprocessor conditionals as partitioning is always available.
Signed-off-by: Jamie Iles <jamie@jamieiles.com>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Jamie Iles [Mon, 23 May 2011 09:23:02 +0000 (10:23 +0100)]
mtd: gpio-addr-flash: convert to mtd_device_register()
Convert to mtd_device_register() and remove the CONFIG_MTD_PARTITIONS
preprocessor conditionals as partitioning is always available.
Signed-off-by: Jamie Iles <jamie@jamieiles.com>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Jamie Iles [Mon, 23 May 2011 09:23:01 +0000 (10:23 +0100)]
mtd: edb7312: convert to mtd_device_register()
Convert to mtd_device_register() and remove the CONFIG_MTD_PARTITIONS
preprocessor conditionals as partitioning is always available.
Signed-off-by: Jamie Iles <jamie@jamieiles.com>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Jamie Iles [Mon, 23 May 2011 09:23:00 +0000 (10:23 +0100)]
mtd: dc21285: convert to mtd_device_register()
Convert to mtd_device_register() and remove the CONFIG_MTD_PARTITIONS
preprocessor conditionals as partitioning is always available.
Signed-off-by: Jamie Iles <jamie@jamieiles.com>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Jamie Iles [Mon, 23 May 2011 09:22:59 +0000 (10:22 +0100)]
mtd: sst25l: convert to mtd_device_register()
Convert to mtd_device_register() and remove the check for
mtd_has_partitions() as we always have partitioning enabled now.
Signed-off-by: Jamie Iles <jamie@jamieiles.com>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Jamie Iles [Mon, 23 May 2011 09:22:58 +0000 (10:22 +0100)]
mtd: dataflash: convert to mtd_device_register()
Convert to mtd_device_register() and remove the CONFIG_MTD_PARTITIONS
preprocessor conditionals as partitioning is always available.
Signed-off-by: Jamie Iles <jamie@jamieiles.com>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Jamie Iles [Mon, 23 May 2011 09:22:57 +0000 (10:22 +0100)]
mtd: m25p80: convert to mtd_device_register()
Convert to mtd_device_register() and remove the CONFIG_MTD_PARTITIONS
preprocessor conditionals as partitioning is always available.
Signed-off-by: Jamie Iles <jamie@jamieiles.com>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Jamie Iles [Mon, 23 May 2011 09:22:56 +0000 (10:22 +0100)]
mtd: onenand: convert to mtd_device_register()
Convert to mtd_device_register() and remove the CONFIG_MTD_PARTITIONS
preprocessor conditionals as partitioning is always available.
Cc: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Jamie Iles <jamie@jamieiles.com>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Jamie Iles [Mon, 23 May 2011 09:22:55 +0000 (10:22 +0100)]
mips: tx99: remove CONFIG_MTD_PARTITIONS check
CONFIG_MTD_PARTITIONS no longer exists as MTD partitioning is always
enabled now.
Cc: Ralf Baechle <ralf@linux-mips.org>
Signed-off-by: Jamie Iles <jamie@jamieiles.com>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Jamie Iles [Mon, 23 May 2011 09:22:54 +0000 (10:22 +0100)]
mtd: octeon: convert to mtd_device_register()
Convert to mtd_device_register() and remove the CONFIG_MTD_PARTITIONS
preprocessor conditionals as partitioning is always available.
Cc: Ralf Baechle <ralf@linux-mips.org>
Signed-off-by: Jamie Iles <jamie@jamieiles.com>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Jamie Iles [Mon, 23 May 2011 09:22:53 +0000 (10:22 +0100)]
mtd: cris: convert to mtd_device_register()
Convert to mtd_device_register() and remove the CONFIG_MTD_PARTITIONS
preprocessor conditionals as partitioning is always available.
Cc: Mikael Starvik <starvik@axis.com>
Cc: Jesper Nilsson <jesper.nilsson@axis.com>
Signed-off-by: Jamie Iles <jamie@jamieiles.com>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Jamie Iles [Mon, 23 May 2011 09:22:52 +0000 (10:22 +0100)]
mtd: bfin: convert to mtd_device_register()
Convert to mtd_device_register() and remove the CONFIG_MTD_PARTITIONS
preprocessor conditionals as partitioning is always available.
Cc: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: Jamie Iles <jamie@jamieiles.com>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Jamie Iles [Mon, 23 May 2011 09:22:51 +0000 (10:22 +0100)]
mtd: s3c2410: remove CONFIG_MTD_PARTITIONS test
MTD is now always build with partitioning support so this can be
removed.
Cc: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: Jamie Iles <jamie@jamieiles.com>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Jamie Iles [Mon, 23 May 2011 09:22:50 +0000 (10:22 +0100)]
mtd: pxa: convert to mtd_device_register()
Convert to mtd_device_register() and remove the CONFIG_MTD_PARTITIONS
preprocessor conditionals as partitioning is always available.
Cc: Cc: David Woodhouse <dwmw2@infradead.org>
Cc: Artem Bityutskiy <dedekind1@gmail.com>
Signed-off-by: Jamie Iles <jamie@jamieiles.com>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Jamie Iles [Mon, 23 May 2011 09:22:49 +0000 (10:22 +0100)]
mtd: ixp: convert to mtd_device_register()
Convert to mtd_device_register() and remove the CONFIG_MTD_PARTITIONS
preprocessor conditionals as partitioning is always available.
Cc: Imre Kaloz <kaloz@openwrt.org>
Cc: Krzysztof Halasa <khc@pm.waw.pl>
Signed-off-by: Jamie Iles <jamie@jamieiles.com>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Jamie Iles [Mon, 23 May 2011 09:22:48 +0000 (10:22 +0100)]
arm: mtd: gemini: convert to mtd_device_register()
Convert to mtd_device_register() and remove the CONFIG_MTD_PARTITIONS
preprocessor conditionals as partitioning is always available.
Cc: Hans Ulli Kroll <ulli.kroll@googlemail.com>
Signed-off-by: Jamie Iles <jamie@jamieiles.com>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Jamie Iles [Mon, 23 May 2011 09:22:47 +0000 (10:22 +0100)]
mtd: plat_nand: convert to mtd_device_register()
Convert to mtd_device_register() and remove the CONFIG_MTD_PARTITIONS
preprocessor conditionals as partitioning is always available.
Signed-off-by: Jamie Iles <jamie@jamieiles.com>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Jamie Iles [Mon, 23 May 2011 09:22:46 +0000 (10:22 +0100)]
mtd: nand: convert to mtd_device_register()
Convert to mtd_device_register() and remove the CONFIG_MTD_PARTITIONS
preprocessor conditionals as partitioning is always available.
Signed-off-by: Jamie Iles <jamie@jamieiles.com>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Jamie Iles [Mon, 23 May 2011 09:22:45 +0000 (10:22 +0100)]
mtd: physmap: convert to mtd_device_register()
Convert to mtd_device_register() and remove the CONFIG_MTD_PARTITIONS
preprocessor conditionals as partitioning is always available.
Signed-off-by: Jamie Iles <jamie@jamieiles.com>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Jamie Iles [Mon, 23 May 2011 09:22:44 +0000 (10:22 +0100)]
mtd: provide of_mtd_parse_partitions for !CONFIG_MTD_OF_PARTS
If we don't have OpenFirmware enabled then provide a stub
of_mtd_parse_partitions that returns no partitions so drivers don't need
ifdeffery inside.
Signed-off-by: Jamie Iles <jamie@jamieiles.com>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Jamie Iles [Mon, 23 May 2011 16:15:46 +0000 (17:15 +0100)]
mtd: introduce mtd_device_(un)register()
To prepare for the removal of add_mtd_device and add_mtd_partitions(),
introduce mtd_device_register(). This will create partitions if they
are supplied or register the whole device if there are no partitions.
Once all drivers are converted to use mtd_device_register(),
add_mtd_device() and add_mtd_partitions() will be made internal only.
v2: move kerneldoc to implementation file and fixup some kerneldoc
warnings.
Artem: tweak comments: remove junk tabs, use dots consistently.
Signed-off-by: Jamie Iles <jamie@jamieiles.com>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Jamie Iles [Mon, 23 May 2011 09:22:42 +0000 (10:22 +0100)]
mtd: always build partitioning support
There are very few situations where MTD partitioning is not required,
and the benefit in code size reduction by making this configurable does
not warrant the level of ifdeffery needed.
Artem: this patch is not final - we just make sure that mtd partitions
are always compiled in, and at the end of the series we'll kill
MTD_PARTITIONS altogether.
Signed-off-by: Jamie Iles <jamie@jamieiles.com>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Wanlong Gao [Fri, 20 May 2011 13:14:30 +0000 (21:14 +0800)]
mtd:fix the bad format in the mtdcore.c
Remove the spare spaces in the head of the lines.
Signed-off-by: Wanlong Gao <wanlong.gao@gmail.com>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Maxin B. John [Fri, 20 May 2011 14:44:10 +0000 (15:44 +0100)]
mtd: mtdswap: fix possible null dereference
This patch fixes the possible null dereference of the variable "oinfo"
Thanks to Coverity for spotting this.
Signed-off-by: Maxin B. John <john.maxin@nokia.com>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Tadashi Abe [Thu, 19 May 2011 07:17:50 +0000 (16:17 +0900)]
mtd: remove duplicate assignment of chip->state
This is a trivial patch which removes unnecessary assignment of chip->state
in put_chip(). It's duplicated.
Signed-off-by: Tadashi Abe <tabe@mvista.com>
Acked-by: Joakim Tjernlund <joakim.tjernlund@transmode.se>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Tadashi Abe [Thu, 19 May 2011 06:58:15 +0000 (15:58 +0900)]
mtd: fix hang-up in cfi erase and read contention
cfi erase command hangs up when erase and read contention occurs.
If read runs at the same address as erase operation, read issues
Erase-Suspend via get_chip() and the erase goes into sleep in wait queue.
But in this case, read operation exits by time-out without waking it up.
I think the other variants (0001, 0020 and lpddr) have the same problem too.
Tested and verified the patch only on CFI-0002 flash, though.
Signed-off-by: Tadashi Abe <tabe@mvista.com>
Acked-by: Joakim Tjernlund <joakim.tjernlund@transmode.se>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Wanlong Gao [Tue, 17 May 2011 14:36:18 +0000 (22:36 +0800)]
mtd: simplify get_mtd_device_nm function
'get_mtd_device_nm()' has a piece of code which equivalent to what
'__get_mtd_device()' does - remove this duplicated code and use
''__get_mtd_device()' instead.
Artem: changed commit message.
Artem: while on it, remove an unnecessary extra empty line
Signed-off-by: Wanlong Gao <wanlong.gao@gmail.com>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Artem Bityutskiy [Tue, 17 May 2011 08:13:17 +0000 (11:13 +0300)]
mtd: be silent when mtd partition parser cannot be found
Currently when we register partitions in 'parse_mtd_partitions()' we accept the
list of parsers we should try. And if one of the parsers was not found we print
a message. Well, first of all this whole idea is bad - look at how many
'part_probes' and 'part_probe_types' variables we have - nearly every driver
defines one. Instead, we should just go through all registered parsers all the
time. But this needs to be worked on separately.
This patch makes life of MTD partitions' users a bit simpler and allows them to
safely request parsers which have not been registered -
'parse_mtd_partitions()' will not print a "not available" message in this
case.
The point is that drivers do not have to do things like this any longer:
static const char *part_probe_types[] = { "cmdlinepart", "RedBoot",
"afs",
NULL };
but can simply do like this:
static const char *part_probe_types[] = { "cmdlinepart", "RedBoot", "afs", NULL };
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Alexey Dobriyan [Fri, 13 May 2011 20:34:19 +0000 (23:34 +0300)]
mtd: convert to seq_file interface
->read_proc interface is going away, switch to seq_file.
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Acked-by: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Kishore Kadiyala [Wed, 11 May 2011 15:47:27 +0000 (21:17 +0530)]
mtd: omap: fix subpage ecc issue with prefetch
When reading/writing a subpage (When HW ECC is not available/enabled)
for number of bytes not aligned to 4, the mis-aligned bytes are handled
first (by cpu copy method) before enabling the Prefetch engine to/from
'p'(start of buffer 'buf'). Then it reads/writes rest of the bytes with
the help of Prefetch engine, if available, or again using cpu copy method.
Currently, reading/writing of rest of bytes, is not done correctly since
its trying to read/write again to/from begining of buffer 'buf',
overwriting the mis-aligned bytes.
Read & write using prefetch engine got broken in commit '
2c01946c'.
We never hit a scenario of not getting 'gpmc_prefetch_enable' call
success. So, problem did not get caught up.
Signed-off-by: Kishore Kadiyala <kishore.kadiyala@ti.com>
Signed-off-by: Vimal Singh <vimal.newwork@gmail.com>
Reported-by: Bryan DE FARIA <bdefaria@adeneo-embedded.com>
Cc: stable@kernel.org [2.6.35+]
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Mike Frysinger [Mon, 9 May 2011 14:07:58 +0000 (10:07 -0400)]
mtd: sst25l: fix section markings
The previous section mismatch fix for this driver wasn't entirely correct.
The sst25l_flash_info array is now used in the devinit probe func, but is
marked as initdata, so building results in the warning:
WARNING: drivers/mtd/devices/sst25l.o(.devinit.text): Section mismatch
in reference from the function sst25l_probe()
to the variable .init.data:sst25l_flash_info
Further, the remove func should be devexit rather than exit to match the
probe func.
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>
Kevin Cernekee [Sun, 8 May 2011 17:48:02 +0000 (10:48 -0700)]
mtd: m25p80: Add Spansion S25FL512S, S70FL01GS
S25FL512S = 64MiB single die, same family as S25FL256S
S70FL01GS = 2x S25FL512S dies in one package (separate chip selects)
These devices are not sampling yet, but they are expected to be very
similar to S25FL256S, which has been tested.
Signed-off-by: Kevin Cernekee <cernekee@gmail.com>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Kevin Cernekee [Sun, 8 May 2011 17:48:01 +0000 (10:48 -0700)]
mtd: m25p80: Add Spansion S25FL256S
These are 32MiB parts which use a slightly different 4-byte enable
sequence from Macronix.
Default to the Spansion 4-byte scheme in set_4byte(), as it is more
likely to be copied by other vendors.
Signed-off-by: Kevin Cernekee <cernekee@gmail.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Kevin Cernekee [Sun, 8 May 2011 17:48:00 +0000 (10:48 -0700)]
mtd: m25p80: Clean up JEDEC manufacturer checks
Use the manufacturer ID names from cfi.h instead of hard-coding
hex constants. Introduce a JEDEC_MFR macro for clarity.
Signed-off-by: Kevin Cernekee <cernekee@gmail.com>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Kevin Cernekee [Sun, 8 May 2011 17:47:59 +0000 (10:47 -0700)]
mtd: m25p80: Add Numonyx m25px32 family
Signed-off-by: Kevin Cernekee <cernekee@gmail.com>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Jamie Iles [Fri, 6 May 2011 14:28:57 +0000 (15:28 +0100)]
mtd: denali: detect the number of banks
Not all configurations of the Denali controller support 4 banks. The
controller can support between 1 and 16 banks. Detect this from the
design features register.
Signed-off-by: Jamie Iles <jamie@jamieiles.com>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Jamie Iles [Fri, 6 May 2011 14:28:56 +0000 (15:28 +0100)]
mtd: denali: remove nearly-duplicated register definitions
The controller has interrupt enable/status register pairs for each bank
(along with ECC and status registers) that differ only in address offset.
Rather than providing definitions for each register, make the address a
macro so that it scales for devices with different numbers of banks.
Signed-off-by: Jamie Iles <jamie@jamieiles.com>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Jamie Iles [Fri, 6 May 2011 14:28:55 +0000 (15:28 +0100)]
mtd: denali: convert to generic DMA API
Rather than using the PCI specific DMA API, convert to the generic
DMA API so that we can use the Denali NAND controller on other bus
types.
Signed-off-by: Jamie Iles <jamie@jamieiles.com>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
john.maxin@nokia.com [Fri, 6 May 2011 09:17:21 +0000 (09:17 +0000)]
mtd: onenand: add missing check
Coverity has reported that inside the function "onenand_block_by_block_erase()"
in onenand_base.c, we should add a check to prevent the incrementing of
possible NULL value for "region"
Signed-off-by: Maxin B. John <john.maxin@nokia.com>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Artem Bityutskiy [Thu, 28 Apr 2011 17:26:59 +0000 (20:26 +0300)]
mtd: return badblockbits back
In commit
c7b28e25cb9beb943aead770ff14551b55fa8c79 the initialization of
the backblockbits was accidentally removed. This patch returns it back,
because otherwise some NAND drivers are broken.
This problem was reported by "Saxena, Parth <parth.saxena@ti.com>" here:
http://lists.infradead.org/pipermail/linux-mtd/2011-April/035221.html
Reported-by: Saxena, Parth <parth.saxena@ti.com>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
Tested-by: Saxena, Parth <parth.saxena@ti.com>
Acked-by: Saxena, Parth <parth.saxena@ti.com>
Acked-by: Brian Norris <computersforpeace@gmail.com>
Cc: stable@kernel.org [2.6.36+]
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Felix Radensky [Tue, 26 Apr 2011 09:36:46 +0000 (12:36 +0300)]
mtd: nand: ndfc: add multiple chip select support
This patch extends NDFC driver to support all 4 chip selects
available in NDFC NAND controller. Tested on custom 460EX board
with 2 chip select NAND device.
Artem: white-space cleanups
Signed-off-by: Felix Radensky <felix@embedded-sol.com>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Grant Erickson [Fri, 8 Apr 2011 15:51:34 +0000 (08:51 -0700)]
JFFS2: retry large buffer allocations
Replace direct call to kmalloc for a potentially large, contiguous
buffer allocation with one to mtd_kmalloc_up_to which helps ensure the
operation can succeed under low-memory, highly- fragmented situations
albeit somewhat more slowly.
Signed-off-by: Grant Erickson <marathon96@gmail.com>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Grant Erickson [Fri, 8 Apr 2011 15:51:33 +0000 (08:51 -0700)]
mtd: mtdchar: retry large buffer allocations
Replace direct call to kmalloc for a potentially large, contiguous
buffer allocation with one to mtd_kmalloc_up_to which helps ensure the
operation can succeed under low-memory, highly- fragmented situations
albeit somewhat more slowly.
Signed-off-by: Grant Erickson <marathon96@gmail.com>
Tested-by: Ben Gardiner <bengardiner@nanometrics.ca>
Tested-by: Stefano Babic <sbabic@denx.de>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Grant Erickson [Fri, 8 Apr 2011 15:51:32 +0000 (08:51 -0700)]
mtd: create function to perform large allocations
Introduce a common function to handle large, contiguous kmalloc buffer
allocations by exponentially backing off on the size of the requested
kernel transfer buffer until it succeeds or until the requested
transfer buffer size falls below the page size.
This helps ensure the operation can succeed under low-memory, highly-
fragmented situations albeit somewhat more slowly.
Artem: so this patch solves the problem that the kernel tries to kmalloc too
large buffers, which (a) may fail and does fail - people complain about this,
and (b) slows down the system in case of high memory fragmentation, because
the kernel starts dropping caches, writing back, swapping, etc. But we do not
really have to allocate a lot of memory to do the I/O, we may do this even with
as little as one min. I/O unit (NAND page) of RAM. So the idea of this patch is
that if the user asks to read or write a lot, we try to kmalloc a lot, with GFP
flags which make the kernel _not_ drop caches, etc. If we can allocate it - good,
if not - we try to allocate twice as less, and so on, until we reach the min.
I/O unit size, which is our last resort allocation and use the normal
GFP_KERNEL flag.
Artem: re-write the allocation function so that it makes sure the allocated
buffer is aligned to the min. I/O size of the flash.
Signed-off-by: Grant Erickson <marathon96@gmail.com>
Tested-by: Ben Gardiner <bengardiner@nanometrics.ca>
Tested-by: Stefano Babic <sbabic@denx.de>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Felix Radensky [Sun, 24 Apr 2011 22:57:12 +0000 (01:57 +0300)]
mtd: mtdconcat: fix NAND OOB write
Currently mtdconcat is broken for NAND. An attemtpt to create
JFFS2 filesystem on concatenation of several NAND devices fails
with OOB write errors. This patch fixes that problem.
Signed-off-by: Felix Radensky <felix@embedded-sol.com>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
Cc: stable@kernel.org
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Jan Weitzel [Tue, 19 Apr 2011 14:15:34 +0000 (16:15 +0200)]
mtd: omap2: mtd split nand_scan in ident and tail
nand_scan calls nand_scan_tail and here we got a ecc.layout and calculate
oobavail for this layout. After calling nand_scan, we change the layout pointer
if OMAP_ECC_HAMMING_CODE_HW_ROMCODE is set. This results in not calcluated
oobavail. Mountig as jffs2 is not possible.
To fix that nand_scan has to split up in nand_scan_ident and nand_scan_tail
setting ecc.layout between these calls. So nand_scan_tail calculates oobvail
for the used layout. This is also done in serveral other platforms.
Signed-off-by: Jan Weitzel <j.weitzel@phytec.de>
Reviewed-by: Vimal Singh <vimal.newwork@gmail.com>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Artem Bityutskiy [Mon, 18 Apr 2011 04:50:37 +0000 (07:50 +0300)]
mtd: mtd_blkdevs: fix error path in blktrans_open
The 'blktrans_open()' does not handle possible '__get_mtd_device()' failures
because it does not check the error code. Moreover, the 'dev->tr->open()'
failures are not handled correctly because in this case the function just
goes ahead and gets the mtd device, then returns an error. But Instead, it
should _not_ try to get the mtd device, then it should put back the module
and the kref.
This patch fixes the issue. Note, I only compile-tested it. This patch was
inspired by a bug report about a similar issue in 2.6.34 kernels
sent by Mike Turner <admin@islandsoftware.co.uk> to the MTD mailing list:
http://lists.infradead.org/pipermail/linux-mtd/2011-April/034980.html
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Hans-Christian Egtvedt [Wed, 13 Apr 2011 13:55:17 +0000 (15:55 +0200)]
mtd: atmel_nand: add missing include of linux/dmaengine.h
Including linux/dmaengine.h fixes the missing definition of the enum
dma_ctrl_flags type used in atmel_nand_dma_op function.
Signed-off-by: Hans-Christian Egtvedt <hans-christian.egtvedt@atmel.com>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Jiri Pinkava [Wed, 13 Apr 2011 10:26:48 +0000 (12:26 +0200)]
mtd: nand: remove doubled chip deselection on (un)lock
Chip deselection is already done in nand_release_device. So only
duplicate code.
Signed-off-by: Jiri Pinkava <jiri.pinkava@vscht.cz>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Jiri Pinkava [Wed, 13 Apr 2011 09:59:30 +0000 (11:59 +0200)]
mtd: nand: fix S3C NAND clock stop
Current implementation of s3c2410_nand_select_chip call
clk_disable every time when chip = -1 (de-select). This happend
multiple times even if chip was already de-selected. This causes
disabling clock even if they are already disabled and due to
nature of clock subsytem implementation this causes nand clock
to be disabled and newer enabled again.
Signed-off-by: Jiri Pinkava <jiri.pinkava@vscht.cz>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Gernot Hoyler [Mon, 11 Apr 2011 13:53:35 +0000 (15:53 +0200)]
mtd: cmdset_0002: add CFI 1.5 support for S29GL-S
This patch adds CFI 1.5 support for the new Spansion S29GL-S device family.
For details, see the data sheet on the Spansion web site:
http://www.spansion.com/Support/Datasheets/S29GL_128S_01GS_00_02_e.pdf
Signed-off-by: Gernot Hoyler <Gernot.Hoyler@spansion.com>
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>
Roman Tereshonkov [Mon, 11 Apr 2011 09:52:01 +0000 (12:52 +0300)]
mtd: onenand: add ecclayout and subpage_sft for non-flex 4KiB page onenand
So as the ecclayout and suppage size for 4KiB page
Flex- and none-Flex OneNAND are different
the new values for none-Flex 4KiB page OneNAND memory are added.
The introduced ecclayout and suppage size are based on specification
4Gib M-die OneNAND Flash (KFM4G16Q4M, KFN8G16Q4M). Rev. 1.3, Apr. 2010
For eccpos we expose only 64 bytes out of 72, for oobfree the spare area
fields marked as "Managed by internal ECC logic for Logical Sector Number area"
are used.
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>
Michal Marek [Tue, 5 Apr 2011 14:59:03 +0000 (16:59 +0200)]
mtd: denali: drop __TIME__ usage
The kernel already prints its build timestamp during boot, no need to
repeat it in random drivers and produce different object files each
time.
Signed-off-by: Michal Marek <mmarek@suse.cz>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Brian Norris [Sat, 19 Mar 2011 04:53:42 +0000 (21:53 -0700)]
mtd: nand: dynamic allocation of flash-based BBT structs
It is nicer to dynamically create our badblock patterns than to
statically define them. The nand_create_default_bbt_descr() function
does a sufficient job of handling various bad block scanning options
for either flash-based or non-flash-based BBTs, so we might as well
use the function for both cases.
This patch simplifies and shortens our code (and removes a TODO that
I left a few months ago).
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 [Sat, 19 Mar 2011 04:53:41 +0000 (21:53 -0700)]
mtd: nand: renumber conflicting BBT flags
The NAND_USE_FLASH_BBT_NO_OOB and NAND_CREATE_EMPTY_BBT flags conflict
with the NAND_BBT_SCANBYTE1AND6 and NAND_BBT_DYNAMICSTRUCT flags,
respectively. This change will allow us to utilize these options
independently.
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>
Gabor Juhos [Fri, 25 Mar 2011 07:48:52 +0000 (08:48 +0100)]
mtd: m25p80: add support for the MX25L1606E chip
Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Sergey Senozhatsky [Tue, 22 Mar 2011 12:11:02 +0000 (14:11 +0200)]
jffs2: remove unused variables
Remove unused 'jffs2_sb_info *c' variable from 'jffs2_lookup()'
and 'jffs2_readdir()'.
Signed-off-by: Sergey Senozhatsky <sergey.senozhatsky@gmail.com>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Baruch Siach [Mon, 14 Mar 2011 07:01:56 +0000 (09:01 +0200)]
mtd: mxc_nand: add support for multiple chips on V21 devices
Do the following to add support for up to 4 chips on V21 devices (i.MX25 and
i.MX35):
* implement .select_chip for V21
* adjust existing NFC_V1_V2_BUF_ADDR writes to take chip select into account
* unlock all chip selects at preset_v1_v2()
* scan up to 4 devices at .probe
This has been tested on i.MX25 with two attached NAND chip (on one die).
Signed-off-by: Baruch Siach <baruch@tkos.co.il>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Linus Torvalds [Thu, 19 May 2011 04:06:34 +0000 (21:06 -0700)]
Linux 2.6.39
Linus Torvalds [Wed, 18 May 2011 23:50:28 +0000 (16:50 -0700)]
Merge branch 'fixes' of git://git./linux/kernel/git/jlbec/ocfs2
* 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jlbec/ocfs2:
configfs: Fix race between configfs_readdir() and configfs_d_iput()
configfs: Don't try to d_delete() negative dentries.
ocfs2/dlm: Target node death during resource migration leads to thread spin
ocfs2: Skip mount recovery for hard-ro mounts
ocfs2/cluster: Heartbeat mismatch message improved
ocfs2/cluster: Increase the live threshold for global heartbeat
ocfs2/dlm: Use negotiated o2dlm protocol version
ocfs2: skip existing hole when removing the last extent_rec in punching-hole codes.
ocfs2: Initialize data_ac (might be used uninitialized)
Linus Torvalds [Wed, 18 May 2011 20:25:57 +0000 (13:25 -0700)]
Merge branch 'devicetree/merge' of git://git.secretlab.ca/git/linux-2.6
* 'devicetree/merge' of git://git.secretlab.ca/git/linux-2.6:
drivercore: revert addition of of_match to struct device
of: fix race when matching drivers
Linus Torvalds [Wed, 18 May 2011 20:21:43 +0000 (13:21 -0700)]
Merge branch 'upstream' of git://git.linux-mips.org/upstream-linus
* 'upstream' of git://git.linux-mips.org/pub/scm/upstream-linus:
MIPS: Kludge IP27 build for 2.6.39.
MIPS: AR7: Fix GPIO register size for Titan variant.
MIPS: Fix duplicate invocation of notify_die.
MIPS: RB532: Fix iomap resource size miscalculation.
Grant Likely [Wed, 18 May 2011 17:19:24 +0000 (11:19 -0600)]
drivercore: revert addition of of_match to struct device
Commit
b826291c, "drivercore/dt: add a match table pointer to struct
device" added an of_match pointer to struct device to cache the
of_match_table entry discovered at driver match time. This was unsafe
because matching is not an atomic operation with probing a driver. If
two or more drivers are attempted to be matched to a driver at the
same time, then the cached matching entry pointer could get
overwritten.
This patch reverts the of_match cache pointer and reworks all users to
call of_match_device() directly instead.
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
Milton Miller [Wed, 18 May 2011 15:27:39 +0000 (10:27 -0500)]
of: fix race when matching drivers
If two drivers are probing devices at the same time, both will write
their match table result to the dev->of_match cache at the same time.
Only write the result if the device matches.
In a thread titled "SBus devices sometimes detected, sometimes not",
Meelis reported his SBus hme was not detected about 50% of the time.
From the debug suggested by Grant it was obvious another driver matched
some devices between the call to match the hme and the hme discovery
failling.
Reported-by: Meelis Roos <mroos@linux.ee>
Signed-off-by: Milton Miller <miltonm@bga.com>
[grant.likely: modified to only call of_match_device() once]
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
Linus Torvalds [Wed, 18 May 2011 13:49:02 +0000 (06:49 -0700)]
Merge branch 'for-linus' of git://git.kernel.dk/linux-2.6-block
* 'for-linus' of git://git.kernel.dk/linux-2.6-block:
block: don't delay blk_run_queue_async
scsi: remove performance regression due to async queue run
blk-throttle: Use task_subsys_state() to determine a task's blkio_cgroup
block: rescan partitions on invalidated devices on -ENOMEDIA too
cdrom: always check_disk_change() on open
block: unexport DISK_EVENT_MEDIA_CHANGE for legacy/fringe drivers
Ralf Baechle [Wed, 18 May 2011 12:14:36 +0000 (13:14 +0100)]
MIPS: Kludge IP27 build for 2.6.39.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Florian Fainelli [Fri, 13 May 2011 15:41:21 +0000 (17:41 +0200)]
MIPS: AR7: Fix GPIO register size for Titan variant.
The 'size' variable contains the correct register size for both AR7
and Titan, but we never used it to ioremap the correct register size.
This problem only shows up on Titan.
[ralf@linux-mips.org: Fixed the fix. The original patch as in patchwork
recognizes the problem correctly then fails to fix it ...]
Reported-by: Alexander Clouter <alex@digriz.org.uk>
Signed-off-by: Florian Fainelli <florian@openwrt.org>
Patchwork: https://patchwork.linux-mips.org/patch/2380/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Ralf Baechle [Fri, 13 May 2011 09:33:28 +0000 (10:33 +0100)]
MIPS: Fix duplicate invocation of notify_die.
Initial patch by Yury Polyanskiy <ypolyans@princeton.edu>.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Patchwork: https://patchwork.linux-mips.org/patch/2373/
Ralf Baechle [Thu, 12 May 2011 12:55:48 +0000 (13:55 +0100)]
MIPS: RB532: Fix iomap resource size miscalculation.
This is the MIPS portion of Joe Perches <joe@perches.com>'s
https://patchwork.linux-mips.org/patch/2172/ which seems to have been
lost in time and space.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Joel Becker [Wed, 18 May 2011 11:08:16 +0000 (04:08 -0700)]
configfs: Fix race between configfs_readdir() and configfs_d_iput()
configfs_readdir() will use the existing inode numbers of inodes in the
dcache, but it makes them up for attribute files that aren't currently
instantiated. There is a race where a closing attribute file can be
tearing down at the same time as configfs_readdir() is trying to get its
inode number.
We want to get the inode number of open attribute files, because they
should match while instantiated. We can't lock down the transition
where dentry->d_inode is set to NULL, so we just check for NULL there.
We can, however, ensure that an inode we find isn't iput() in
configfs_d_iput() until after we've accessed it.
Signed-off-by: Joel Becker <jlbec@evilplan.org>
Joel Becker [Tue, 22 Feb 2011 09:09:49 +0000 (01:09 -0800)]
configfs: Don't try to d_delete() negative dentries.
When configfs is faking mkdir() on its subsystem or default group
objects, it starts by adding a negative dentry. It then tries to
instantiate the group. If that should fail, it must clean up after
itself.
I was using d_delete() here, but configfs_attach_group() promises to
return an empty dentry on error. d_delete() explodes with the entry
dentry. Let's try d_drop() instead. The unhashing is what we want for
our dentry.
Signed-off-by: Joel Becker <jlbec@evilplan.org>
Shaohua Li [Wed, 18 May 2011 09:22:43 +0000 (11:22 +0200)]
block: don't delay blk_run_queue_async
Let's check a scenario:
1. blk_delay_queue(q, SCSI_QUEUE_DELAY);
2. blk_run_queue_async();
the second one will became a noop, because q->delay_work already has
WORK_STRUCT_PENDING_BIT set, so the delayed work will still run after
SCSI_QUEUE_DELAY. But blk_run_queue_async actually hopes the delayed
work runs immediately.
Fix this by doing a cancel on potentially pending delayed work
before queuing an immediate run of the workqueue.
Signed-off-by: Shaohua Li <shaohua.li@intel.com>
Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
Linus Torvalds [Wed, 18 May 2011 10:16:38 +0000 (03:16 -0700)]
Merge branch 'v4l_for_linus' of git://git./linux/kernel/git/mchehab/linux-2.6
* 'v4l_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-2.6:
[media] V4L: soc-camera: regression fix: calculate .sizeimage in soc_camera.c
[media] v4l2-subdev: fix broken subdev control enumeration
[media] Fix cx88 remote control input
[media] v4l: Release module if subdev registration fails
Linus Torvalds [Wed, 18 May 2011 10:14:34 +0000 (03:14 -0700)]
Merge branch 'x86-fixes-for-linus' of git://git./linux/kernel/git/tip/linux-2.6-tip
* 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
x86, AMD: Fix ARAT feature setting again
Revert "x86, AMD: Fix APIC timer erratum 400 affecting K8 Rev.A-E processors"
x86, apic: Fix spurious error interrupts triggering on all non-boot APs
x86, mce, AMD: Fix leaving freed data in a list
x86: Fix UV BAU for non-consecutive nasids
x86, UV: Fix NMI handler for UV platforms
Linus Torvalds [Wed, 18 May 2011 10:13:46 +0000 (03:13 -0700)]
Merge branch 'perf-fixes-for-linus' of git://git./linux/kernel/git/tip/linux-2.6-tip
* 'perf-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
perf evlist: Fix per thread mmap setup
perf tools: Honour the cpu list parameter when also monitoring a thread list
kprobes, x86: Disable irqs during optimized callback
Linus Torvalds [Wed, 18 May 2011 10:13:11 +0000 (03:13 -0700)]
Merge git://git./linux/kernel/git/sfrench/cifs-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/sfrench/cifs-2.6:
cifs: fix cifsConvertToUCS() for the mapchars case
cifs: add fallback in is_path_accessible for old servers
Randy Dunlap [Tue, 17 May 2011 22:44:12 +0000 (15:44 -0700)]
procfs: add stub for proc_mkdir_mode()
Provide a stub for proc_mkdir_mode() when CONFIG_PROC_FS is not
enabled, just like the stub for proc_mkdir().
Fixes this linux-next build error:
drivers/net/wireless/airo.c:4504: error: implicit declaration of function 'proc_mkdir_mode'
Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Cc: Stephen Rothwell <sfr@canb.auug.org.au>
Cc: Alexey Dobriyan <adobriyan@gmail.com>
Cc: "John W. Linville" <linville@tuxdriver.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Richard Weinberger [Tue, 17 May 2011 22:44:11 +0000 (15:44 -0700)]
um: fix abort
os_dump_core() uses abort() to terminate UML in case of an fatal error.
glibc's abort() calls raise(SIGABRT) which makes use of tgkill().
tgkill() has no effect within UML's kernel threads because they are not
pthreads. As fallback abort() executes an invalid instruction to
terminate the process. Therefore UML gets killed by SIGSEGV and leaves a
ugly log entry in the host's kernel ring buffer.
To get rid of this we use our own abort routine.
Signed-off-by: Richard Weinberger <richard@nod.at>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
KAMEZAWA Hiroyuki [Tue, 17 May 2011 22:44:10 +0000 (15:44 -0700)]
memcg: fix zone congestion
ZONE_CONGESTED should be a state of global memory reclaim. If not, a busy
memcg sets this and give unnecessary throttoling in wait_iff_congested()
against memory recalim in other contexts. This makes system performance
bad.
I'll think about "memcg is congested!" flag is required or not, later.
But this fix is required first.
Signed-off-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Reviewed-by: Minchan Kim <minchan.kim@gmail.com>
Cc: Daisuke Nishimura <nishimura@mxp.nes.nec.co.jp>
Acked-by: Ying Han <yinghan@google.com>
Cc: Balbir Singh <balbir@in.ibm.com>
Cc: Johannes Weiner <jweiner@redhat.com>
Cc: Michal Hocko <mhocko@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Axel Lin [Tue, 17 May 2011 22:44:09 +0000 (15:44 -0700)]
drivers/leds/leds-lm3530.c: add MODULE_DEVICE_TABLE
Adding the necessary MODULE_DEVICE_TABLE() information allows the driver
to be automatically loaded by udev.
Signed-off-by: Axel Lin <axel.lin@gmail.com>
Cc: Shreshtha Kumar SAHU <shreshthakumar.sahu@stericsson.com>
Cc: Richard Purdie <rpurdie@rpsys.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Alexandre Bounine [Tue, 17 May 2011 22:44:08 +0000 (15:44 -0700)]
rapidio: fix default routing initialization
Fix switch initialization to ensure that all switches have default routing
disabled. This guarantees that no unexpected RapidIO packets arrive to
the default port set by reset and there is no default routing destination
until it is properly configured by software.
This update also unifies handling of unmapped destinations by tsi57x, IDT
Gen1 and IDT Gen2 switches.
Signed-off-by: Alexandre Bounine <alexandre.bounine@idt.com>
Cc: Kumar Gala <galak@kernel.crashing.org>
Cc: Matt Porter <mporter@kernel.crashing.org>
Cc: Li Yang <leoli@freescale.com>
Cc: Thomas Moll <thomas.moll@sysgo.com>
Cc: <stable@kernel.org> [2.6.37+]
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Jeff Layton [Tue, 17 May 2011 19:28:21 +0000 (15:28 -0400)]
cifs: fix cifsConvertToUCS() for the mapchars case
As Metze pointed out, commit
84cdf74e broke mapchars option:
Commit "cifs: fix unaligned accesses in cifsConvertToUCS"
(
84cdf74e8096a10dd6acbb870dd404b92f07a756) does multiple steps
in just one commit (moving the function and changing it without
testing).
put_unaligned_le16(temp, &target[j]); is never called for any
codepoint the goes via the 'default' switch statement. As a result
we put just zero (or maybe uninitialized) bytes into the target
buffer.
His proposed patch looks correct, but doesn't apply to the current head
of the tree. This patch should also fix it.
Cc: <stable@kernel.org> # .38.x: 581ade4: cifs: clean up various nits in unicode routines (try #2)
Reported-by: Stefan Metzmacher <metze@samba.org>
Signed-off-by: Jeff Layton <jlayton@redhat.com>
Signed-off-by: Steve French <sfrench@us.ibm.com>
Jeff Layton [Tue, 17 May 2011 10:40:30 +0000 (06:40 -0400)]
cifs: add fallback in is_path_accessible for old servers
The is_path_accessible check uses a QPathInfo call, which isn't
supported by ancient win9x era servers. Fall back to an older
SMBQueryInfo call if it fails with the magic error codes.
Cc: stable@kernel.org
Reported-and-Tested-by: Sandro Bonazzola <sandro.bonazzola@gmail.com>
Signed-off-by: Jeff Layton <jlayton@redhat.com>
Signed-off-by: Steve French <sfrench@us.ibm.com>
Linus Torvalds [Tue, 17 May 2011 15:02:04 +0000 (08:02 -0700)]
Merge branch 'timers-fixes-for-linus' of git://git./linux/kernel/git/tip/linux-2.6-tip
* 'timers-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
tick: Clear broadcast active bit when switching to oneshot
rtc: mc13xxx: Don't call rtc_device_register while holding lock
rtc: rp5c01: Initialize drvdata before registering device
rtc: pcap: Initialize drvdata before registering device
rtc: msm6242: Initialize drvdata before registering device
rtc: max8998: Initialize drvdata before registering device
rtc: max8925: Initialize drvdata before registering device
rtc: m41t80: Initialize clientdata before registering device
rtc: ds1286: Initialize drvdata before registering device
rtc: ep93xx: Initialize drvdata before registering device
rtc: davinci: Initialize drvdata before registering device
rtc: mxc: Initialize drvdata before registering device
clocksource: Install completely before selecting
Borislav Petkov [Tue, 17 May 2011 12:55:19 +0000 (14:55 +0200)]
x86, AMD: Fix ARAT feature setting again
Trying to enable the local APIC timer on early K8 revisions
uncovers a number of other issues with it, in conjunction with
the C1E enter path on AMD. Fixing those causes much more churn
and troubles than the benefit of using that timer brings so
don't enable it on K8 at all, falling back to the original
functionality the kernel had wrt to that.
Reported-and-bisected-by: Nick Bowler <nbowler@elliptictech.com>
Cc: Boris Ostrovsky <Boris.Ostrovsky@amd.com>
Cc: Andreas Herrmann <andreas.herrmann3@amd.com>
Cc: Greg Kroah-Hartman <greg@kroah.com>
Cc: Hans Rosenfeld <hans.rosenfeld@amd.com>
Cc: Nick Bowler <nbowler@elliptictech.com>
Cc: Joerg-Volker-Peetz <jvpeetz@web.de>
Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
Link: http://lkml.kernel.org/r/1305636919-31165-3-git-send-email-bp@amd64.org
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Borislav Petkov [Tue, 17 May 2011 12:55:18 +0000 (14:55 +0200)]
Revert "x86, AMD: Fix APIC timer erratum 400 affecting K8 Rev.A-E processors"
This reverts commit
e20a2d205c05cef6b5783df339a7d54adeb50962, as it crashes
certain boxes with specific AMD CPU models.
Moving the lower endpoint of the Erratum 400 check to accomodate
earlier K8 revisions (A-E) opens a can of worms which is simply
not worth to fix properly by tweaking the errata checking
framework:
* missing IntPenging MSR on revisions < CG cause #GP:
http://marc.info/?l=linux-kernel&m=
130541471818831
* makes earlier revisions use the LAPIC timer instead of the C1E
idle routine which switches to HPET, thus not waking up in
deeper C-states:
http://lkml.org/lkml/2011/4/24/20
Therefore, leave the original boundary starting with K8-revF.
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Jens Axboe [Tue, 17 May 2011 09:04:44 +0000 (11:04 +0200)]
scsi: remove performance regression due to async queue run
Commit
c21e6beb removed our queue request_fn re-enter
protection, and defaulted to always running the queues from
kblockd to be safe. This was a known potential slow down,
but should be safe.
Unfortunately this is causing big performance regressions for
some, so we need to improve this logic. Looking into the details
of the re-enter, the real issue is on requeue of requests.
Requeue of requests upon seeing a BUSY condition from the device
ends up re-running the queue, causing traces like this:
scsi_request_fn()
scsi_dispatch_cmd()
scsi_queue_insert()
__scsi_queue_insert()
scsi_run_queue()
scsi_request_fn()
...
potentially causing the issue we want to avoid. So special
case the requeue re-run of the queue, but improve it to offload
the entire run of local queue and starved queue from a single
workqueue callback. This is a lot better than potentially
kicking off a workqueue run for each device seen.
This also fixes the issue of the local device going into recursion,
since the above mentioned commit never moved that queue run out
of line.
Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
Linus Torvalds [Tue, 17 May 2011 01:38:08 +0000 (18:38 -0700)]
Merge git://git./linux/kernel/git/davem/net-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6:
net: Change netdev_fix_features messages loglevel
vmxnet3: Fix inconsistent LRO state after initialization
sfc: Fix oops in register dump after mapping change
IPVS: fix netns if reading ip_vs_* procfs entries
bridge: fix forwarding of IPv6
Linus Torvalds [Tue, 17 May 2011 01:36:47 +0000 (18:36 -0700)]
Merge branch 'for-linus' of git://git./linux/kernel/git/cjb/mmc
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/cjb/mmc:
Revert "mmc: fix a race between card-detect rescan and clock-gate work instances"
Randy Dunlap [Mon, 16 May 2011 20:16:54 +0000 (13:16 -0700)]
mm: fix kernel-doc warning in page_alloc.c
Fix new kernel-doc warning in mm/page_alloc.c:
Warning(mm/page_alloc.c:2370): No description found for parameter 'nid'
Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Yinghai Lu [Sat, 14 May 2011 01:06:17 +0000 (18:06 -0700)]
PCI: Clear bridge resource flags if requested size is 0
During pci remove/rescan testing found:
pci 0000:c0:03.0: PCI bridge to [bus c4-c9]
pci 0000:c0:03.0: bridge window [io 0x1000-0x0fff]
pci 0000:c0:03.0: bridge window [mem 0xf0000000-0xf00fffff]
pci 0000:c0:03.0: bridge window [mem 0xfc180000000-0xfc197ffffff 64bit pref]
pci 0000:c0:03.0: device not available (can't reserve [io 0x1000-0x0fff])
pci 0000:c0:03.0: Error enabling bridge (-22), continuing
pci 0000:c0:03.0: enabling bus mastering
pci 0000:c0:03.0: setting latency timer to 64
pcieport 0000:c0:03.0: device not available (can't reserve [io 0x1000-0x0fff])
pcieport: probe of 0000:c0:03.0 failed with error -22
This bug was caused by commit
c8adf9a3e873 ("PCI: pre-allocate
additional resources to devices only after successful allocation of
essential resources.")
After that commit, pci_hotplug_io_size is changed to additional_io_size
from minium size. So it will not go through resource_size(res) != 0
path, and will not be reset.
The root cause is: pci_bridge_check_ranges will set RESOURCE_IO flag for
pci bridge, and later if children do not need IO resource. those bridge
resources will not need to be allocated. but flags is still there.
that will confuse the the pci_enable_bridges later.
related code:
static void assign_requested_resources_sorted(struct resource_list *head,
struct resource_list_x *fail_head)
{
struct resource *res;
struct resource_list *list;
int idx;
for (list = head->next; list; list = list->next) {
res = list->res;
idx = res - &list->dev->resource[0];
if (resource_size(res) && pci_assign_resource(list->dev, idx)) {
...
reset_resource(res);
}
}
}
At last, We have to clear the flags in pbus_size_mem/io when requested
size == 0 and !add_head. becasue this case it will not go through
adjust_resources_sorted().
Just make size1 = size0 when !add_head. it will make flags get cleared.
At the same time when requested size == 0, add_size != 0, will still
have in head and add_list. because we do not clear the flags for it.
After this, we will get right result:
pci 0000:c0:03.0: PCI bridge to [bus c4-c9]
pci 0000:c0:03.0: bridge window [io disabled]
pci 0000:c0:03.0: bridge window [mem 0xf0000000-0xf00fffff]
pci 0000:c0:03.0: bridge window [mem 0xfc180000000-0xfc197ffffff 64bit pref]
pci 0000:c0:03.0: enabling bus mastering
pci 0000:c0:03.0: setting latency timer to 64
pcieport 0000:c0:03.0: setting latency timer to 64
pcieport 0000:c0:03.0: irq 160 for MSI/MSI-X
pcieport 0000:c0:03.0: Signaling PME through PCIe PME interrupt
pci 0000:c4:00.0: Signaling PME through PCIe PME interrupt
pcie_pme 0000:c0:03.0:pcie01: service driver pcie_pme loaded
aer 0000:c0:03.0:pcie02: service driver aer loaded
pciehp 0000:c0:03.0:pcie04: Hotplug Controller:
v3: more simple fix. also fix one typo in pbus_size_mem
Signed-off-by: Yinghai Lu <yinghai@kernel.org>
Reviewed-by: Ram Pai <linuxram@us.ibm.com>
Cc: Jesse Barnes <jbarnes@virtuousgeek.org>
Cc: Bjorn Helgaas <bhelgaas@google.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Thomas Gleixner [Mon, 16 May 2011 09:07:48 +0000 (11:07 +0200)]
tick: Clear broadcast active bit when switching to oneshot
The first cpu which switches from periodic to oneshot mode switches
also the broadcast device into oneshot mode. The broadcast device
serves as a backup for per cpu timers which stop in deeper
C-states. To avoid starvation of the cpus which might be in idle and
depend on broadcast mode it marks the other cpus as broadcast active
and sets the brodcast expiry value of those cpus to the next tick.
The oneshot mode broadcast bit for the other cpus is sticky and gets
only cleared when those cpus exit idle. If a cpu was not idle while
the bit got set in consequence the bit prevents that the broadcast
device is armed on behalf of that cpu when it enters idle for the
first time after it switched to oneshot mode.
In most cases that goes unnoticed as one of the other cpus has usually
a timer pending which keeps the broadcast device armed with a short
timeout. Now if the only cpu which has a short timer active has the
bit set then the broadcast device will not be armed on behalf of that
cpu and will fire way after the expected timer expiry. In the case of
Christians bug report it took ~145 seconds which is about half of the
wrap around time of HPET (the limit for that device) due to the fact
that all other cpus had no timers armed which expired before the 145
seconds timeframe.
The solution is simply to clear the broadcast active bit
unconditionally when a cpu switches to oneshot mode after the first
cpu switched the broadcast device over. It's not idle at that point
otherwise it would not be executing that code.
[ I fundamentally hate that broadcast crap. Why the heck thought some
folks that when going into deep idle it's a brilliant concept to
switch off the last device which brings the cpu back from that
state? ]
Thanks to Christian for providing all the valuable debug information!
Reported-and-tested-by: Christian Hoffmann <email@christianhoffmann.info>
Cc: John Stultz <johnstul@us.ibm.com>
Link: http://lkml.kernel.org/r/%3Calpine.LFD.2.02.1105161105170.3078%40ionos%3E
Cc: stable@kernel.org
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Michał Mirosław [Mon, 16 May 2011 19:14:21 +0000 (15:14 -0400)]
net: Change netdev_fix_features messages loglevel
Those reduced to DEBUG can possibly be triggered by unprivileged processes
and are nothing exceptional. Illegal checksum combinations can only be
caused by driver bug, so promote those messages to WARN.
Since GSO without SG will now only cause DEBUG message from
netdev_fix_features(), remove the workaround from register_netdevice().
Signed-off-by: Michał Mirosław <mirq-linux@rere.qmqm.pl>
Signed-off-by: David S. Miller <davem@davemloft.net>
Thomas Jarosch [Mon, 16 May 2011 06:28:15 +0000 (06:28 +0000)]
vmxnet3: Fix inconsistent LRO state after initialization
During initialization of vmxnet3, the state of LRO
gets out of sync with netdev->features.
This leads to very poor TCP performance in a IP forwarding
setup and is hitting many VMware users.
Simplified call sequence:
1. vmxnet3_declare_features() initializes "adapter->lro" to true.
2. The kernel automatically disables LRO if IP forwarding is enabled,
so vmxnet3_set_flags() gets called. This also updates netdev->features.
3. Now vmxnet3_setup_driver_shared() is called. "adapter->lro" is still
set to true and LRO gets enabled again, even though
netdev->features shows it's disabled.
Fix it by updating "adapter->lro", too.
The private vmxnet3 adapter flags are scheduled for removal
in net-next, see commit
a0d2730c9571aeba793cb5d3009094ee1d8fda35
"net: vmxnet3: convert to hw_features".
Patch applies to 2.6.37 / 2.6.38 and 2.6.39-rc6.
Please CC: comments.
Signed-off-by: Thomas Jarosch <thomas.jarosch@intra2net.com>
Acked-by: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Ben Hutchings [Mon, 16 May 2011 06:13:49 +0000 (06:13 +0000)]
sfc: Fix oops in register dump after mapping change
Commit
747df2258b1b9a2e25929ef496262c339c380009 ('sfc: Always map MCDI
shared memory as uncacheable') introduced a separate mapping for the
MCDI shared memory (MC_TREG_SMEM). This means we can no longer easily
include it in the register dump. Since it is not particularly useful
in debugging, substitute a recognisable dummy value.
Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Linus Torvalds [Mon, 16 May 2011 15:55:49 +0000 (08:55 -0700)]
Merge branch 'omap-fixes-for-linus' of git://git./linux/kernel/git/tmlind/linux-omap-2.6
* 'omap-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap-2.6:
OMAP3: set the core dpll clk rate in its set_rate function
omap: iommu: Return IRQ_HANDLED in fault handler when no fault occured
Linus Torvalds [Mon, 16 May 2011 15:47:31 +0000 (08:47 -0700)]
Merge branch 'drm-fixes' of git://git./linux/kernel/git/airlied/drm-2.6
* 'drm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6:
drm: Take lock around probes for drm_fb_helper_hotplug_event
drm/i915: Revert i915.semaphore=1 default from
47ae63e0
vga_switcheroo: don't toggle-switch devices
drm/radeon/kms: add some evergreen/ni safe regs
drm/radeon/kms: fix extended lvds info parsing
drm/radeon/kms: fix tiling reg on fusion
Chris Ball [Mon, 16 May 2011 15:32:26 +0000 (11:32 -0400)]
Revert "mmc: fix a race between card-detect rescan and clock-gate work instances"
This reverts commit
26fc8775b51484d8c0a671198639c6d5ae60533e, which has
been reported to cause boot/resume-time crashes for some users:
https://bbs.archlinux.org/viewtopic.php?id=118751.
Signed-off-by: Chris Ball <cjb@laptop.org>
Cc: <stable@kernel.org>
Vivek Goyal [Mon, 16 May 2011 13:24:08 +0000 (15:24 +0200)]
blk-throttle: Use task_subsys_state() to determine a task's blkio_cgroup
Currentlly we first map the task to cgroup and then cgroup to
blkio_cgroup. There is a more direct way to get to blkio_cgroup
from task using task_subsys_state(). Use that.
The real reason for the fix is that it also avoids a race in generic
cgroup code. During remount/umount rebind_subsystems() is called and
it can do following with and rcu protection.
cgrp->subsys[i] = NULL;
That means if somebody got hold of cgroup under rcu and then it tried
to do cgroup->subsys[] to get to blkio_cgroup, it would get NULL which
is wrong. I was running into this race condition with ltp running on a
upstream derived kernel and that lead to crash.
So ideally we should also fix cgroup generic code to wait for rcu
grace period before setting pointer to NULL. Li Zefan is not very keen
on introducing synchronize_wait() as he thinks it will slow
down moun/remount/umount operations.
So for the time being atleast fix the kernel crash by taking a more
direct route to blkio_cgroup.
One tester had reported a crash while running LTP on a derived kernel
and with this fix crash is no more seen while the test has been
running for over 6 days.
Signed-off-by: Vivek Goyal <vgoyal@redhat.com>
Reviewed-by: Li Zefan <lizf@cn.fujitsu.com>
Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
Youquan Song [Thu, 21 Apr 2011 16:22:43 +0000 (00:22 +0800)]
x86, apic: Fix spurious error interrupts triggering on all non-boot APs
This patch fixes a bug reported by a customer, who found
that many unreasonable error interrupts reported on all
non-boot CPUs (APs) during the system boot stage.
According to Chapter 10 of Intel Software Developer Manual
Volume 3A, Local APIC may signal an illegal vector error when
an LVT entry is set as an illegal vector value (0~15) under
FIXED delivery mode (bits 8-11 is 0), regardless of whether
the mask bit is set or an interrupt actually happen. These
errors are seen as error interrupts.
The initial value of thermal LVT entries on all APs always reads
0x10000 because APs are woken up by BSP issuing INIT-SIPI-SIPI
sequence to them and LVT registers are reset to 0s except for
the mask bits which are set to 1s when APs receive INIT IPI.
When the BIOS takes over the thermal throttling interrupt,
the LVT thermal deliver mode should be SMI and it is required
from the kernel to keep AP's LVT thermal monitoring register
programmed as such as well.
This issue happens when BIOS does not take over thermal throttling
interrupt, AP's LVT thermal monitor register will be restored to
0x10000 which means vector 0 and fixed deliver mode, so all APs will
signal illegal vector error interrupts.
This patch check if interrupt delivery mode is not fixed mode before
restoring AP's LVT thermal monitor register.
Signed-off-by: Youquan Song <youquan.song@intel.com>
Acked-by: Suresh Siddha <suresh.b.siddha@intel.com>
Acked-by: Yong Wang <yong.y.wang@intel.com>
Cc: hpa@linux.intel.com
Cc: joe@perches.com
Cc: jbaron@redhat.com
Cc: trenn@suse.de
Cc: kent.liu@intel.com
Cc: chaohong.guo@intel.com
Cc: <stable@kernel.org> # As far back as possible
Link: http://lkml.kernel.org/r/1303402963-17738-1-git-send-email-youquan.song@intel.com
Signed-off-by: Ingo Molnar <mingo@elte.hu>