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2007-07-18UBI: bugfix in max_sqnum calculationArtem Bityutskiy
Do not zero max_sqnum after a new volume has been found. Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
2007-07-18UBI: bugfix in sqnum calculationBrijesh Singh
Hi,I came across problem of having two leb with same sequence no.This happens when we continuously write one block again and again and reboot machine before background thread erases those blocks. The problem here was,when we find two blocks with same sequence no,we take the higher one,but we were not updating max seq no,so next block may have the same seqnum. This patch solves this problem. Signed-off-by: Brijesh Singh <brijesh.s.singh@gmail.com> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
2007-07-18UBI: fix signed-unsigned multiplicationBrijesh Singh
There is signed multiplication assigned to unsigned ei.addr in io.c. This causes wrong addresses for big multiplication.This patch solves the problem. Signed-off-by: Brijesh Singh <brijesh.s.singh@gmail.com> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
2007-07-18UBI: fix bug in atomic_leb_change()Artem Bityutskiy
atomic_leb_change() is only allowed for dynamic volumes, so set the volume type correctly. Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
2007-07-18UBI: fix messageVinit Agnihotri
Increase UBI devices couter after the message, not before. Signed-off-by: Vinit Agnihotri <vinit.agnihotri@gmail.com> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
2007-07-18UBI: fix debugging stuffArtem Bityutskiy
Do not check volumes which are currently in use because thay may be in inconsistent state. Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
2007-07-18UBI: bugfix in error pathArtem Bityutskiy
When volume creation fails, we have to set ubi->volumes[vol_id] back to NULL. This patch also tweaks some debugging stuff. Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
2007-07-18UBI: use is_power_of_2()Vignesh Babu
Replacing (n & (n-1)) in the context of power of 2 checks with is_power_of_2 Signed-off-by: Vignesh Babu <vignesh.babu@wipro.com> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
2007-07-18UBI: fix freeing ubi->vtbl while unloadingVinit Agnihotri
ubi->vtbl is allocated using vmalloc() in vtbl.c empty_create_lvol(), but it is freed in build.c with kfree() Signed-off-by: Vinit Agnihotri <vinit.agnihotri@gmail.com> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
2007-07-18UBI: bugfix in ubi_leb_change()Artem Bityutskiy
Do not call 'ubi_wl_put_peb()' if the LEB was unmapped. Reported-by: Gabor Loki <loki@inf.u-szeged.hu> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
2007-07-18UBI: kill homegrown endian macrosChristoph Hellwig
Kill UBI's homegrown endianess handling and replace it with the standard kernel endianess handling. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
2007-07-18UBI: cleanup ioctl handlingChristoph Hellwig
- don't do access_ok + get/put user but use the proper macro - remove useless checks Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
2007-07-18UBI: error path bugfixArtem Bityutskiy
No need to unlock the lock, this will be done at out_unlock. Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
2007-07-18UBI: minor comma fixArtem Bityutskiy
Use coma at the the last elements of structure initializer. Daniel Stone's explanation: Because it turns: - .attr = foo + .attr = foo, + .bar = baz into: + .bar = baz, i.e., far less likely to screw up a merge. Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
2007-07-18UBI: use vmalloc for large buffersArtem Bityutskiy
UBI allocates temporary buffers of PEB size, which may be 256KiB. Use vmalloc instead of kmalloc for such big temporary buffers. Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
2007-07-18UBI: add few more commentsArtem Bityutskiy
Add few comments above ubi_scan_add_used() to explain why it is so complex. Requested by Satyam Sharma <satyam.sharma@gmail.com>. Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
2007-07-18UBI: set correct gluebi device sizeArtem Bityutskiy
In case of static volumes, make emulated MTD device size to be equivalent to data size, rather then volume size. Reported-by: John Smith <john@arrows.demon.co.uk> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
2007-07-18UBI: do not let to read too muchArtem Bityutskiy
In case of static volumes it is prohibited to read more data then available. Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
2007-07-18UBI: fix error path in create_vtbl()Artem Bityutskiy
There were several bugs in volume table creation error path. Thanks to Satyam Sharma <satyam.sharma@gmail.com> and Florin Malita <fmalita@gmail.com> for finding and analysing them: http://lkml.org/lkml/2007/5/3/274 This patch makes ubi_scan_add_to_list() static and renames it to add_to_list(), just because it is not needed outside scan.c anymore. Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
2007-07-18UBI: fix dereference after kfreeFlorin Malita
Coverity (CID 1614) spotted new_seb being dereferenced after kfree() in create_vtbl's write_error path. Signed-off-by: Florin Malita <fmalita@gmail.com> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
2007-07-18UBI: fix memory leak in checking codeArtem Bityutskiy
Reported-by: Eric Sesterhenn / Snakebyte <snakebyte@gmx.de> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
2007-07-17drivers/*: mark variables with uninitialized_var()Jeff Garzik
Mark variables in drivers/* with uninitialized_var() if such a warning appears, and analysis proves that the var is initialized properly on all paths it is used. Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-07-17drivers/mtd/ubi/eba: minor cleanup: tighten scope of a local varJeff Garzik
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-07-17Freezer: make kernel threads nonfreezable by defaultRafael J. Wysocki
Currently, the freezer treats all tasks as freezable, except for the kernel threads that explicitly set the PF_NOFREEZE flag for themselves. This approach is problematic, since it requires every kernel thread to either set PF_NOFREEZE explicitly, or call try_to_freeze(), even if it doesn't care for the freezing of tasks at all. It seems better to only require the kernel threads that want to or need to be frozen to use some freezer-related code and to remove any freezer-related code from the other (nonfreezable) kernel threads, which is done in this patch. The patch causes all kernel threads to be nonfreezable by default (ie. to have PF_NOFREEZE set by default) and introduces the set_freezable() function that should be called by the freezable kernel threads in order to unset PF_NOFREEZE. It also makes all of the currently freezable kernel threads call set_freezable(), so it shouldn't cause any (intentional) change of behaviour to appear. Additionally, it updates documentation to describe the freezing of tasks more accurately. [akpm@linux-foundation.org: build fixes] Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl> Acked-by: Nigel Cunningham <nigel@nigel.suspend2.net> Cc: Pavel Machek <pavel@ucw.cz> Cc: Oleg Nesterov <oleg@tv-sign.ru> Cc: Gautham R Shenoy <ego@in.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-07-11[MTD] Add sync/unblank function to mtdoopsRichard Purdie
mtdoops wasn't ensuring data was flushed to flash in crash situations after recent changes in mainline kernels as tracking the oops_in_progress variable was no longer enough. We can use the "unblank" console call as a sync call to tell us to write out the buffer though. Therefore add a sync function to mtdoops and call this when console unblank events occur. Signed-off-by: Richard Purdie <rpurdie@openedhand.com> Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2007-07-11[MTD] Remove Ocelot G support from DiskOnChip drivers.Yoichi Yuasa
This patch has removed Ocelot G support from MTD. Ocelot G support has already removed since May 2007. Signed-off-by: Yoichi Yuasa <yoichi_yuasa@tripeaks.co.jp> Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2007-07-11Merge branch 'master' of ↵David Woodhouse
git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6
2007-07-10[MIPS] remove LASAT Networks platforms supportYoichi Yuasa
Signed-off-by: Yoichi Yuasa <yoichi_yuasa@tripeaks.co.jp> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2007-07-10[MIPS] Remove Momenco Ocelot C supportFranck Bui-Huu
Signed-off-by: Franck Bui-Huu <fbuihuu@gmail.com> Signed-off-by: Ralf Baechle <ralf@linux-mips.org> delete mode 100644 arch/mips/configs/ocelot_c_defconfig delete mode 100644 arch/mips/momentum/ocelot_c/Makefile delete mode 100644 arch/mips/momentum/ocelot_c/cpci-irq.c delete mode 100644 arch/mips/momentum/ocelot_c/dbg_io.c delete mode 100644 arch/mips/momentum/ocelot_c/irq.c delete mode 100644 arch/mips/momentum/ocelot_c/ocelot_c_fpga.h delete mode 100644 arch/mips/momentum/ocelot_c/platform.c delete mode 100644 arch/mips/momentum/ocelot_c/prom.c delete mode 100644 arch/mips/momentum/ocelot_c/reset.c delete mode 100644 arch/mips/momentum/ocelot_c/setup.c delete mode 100644 arch/mips/momentum/ocelot_c/uart-irq.c delete mode 100644 arch/mips/pci/fixup-ocelot-c.c delete mode 100644 arch/mips/pci/pci-ocelot-c.c
2007-07-10[MTD] [ONENAND] Make onenand_sim compile on non-ARM platforms.David Woodhouse
The whole point of a sim is that it should run almost anywhere. Gratuitously depending on '#define SZ_128K 131072' from an ARM-specific header isn't really a good idea. Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2007-07-05[MTD] [NOR] add FUJITSU MBM29F800BA and ST M29F800AB descriptionsPhilippe De Muyter
Add descriptions for Fujitsu MBM29F800BA and ST M29F800AB flash chips. Those chips are compatible (except for the ids) with the AMD AM29F800BB. Signed-off-by: Philippe De Muyter <phdm@macqel.be> Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2007-07-04[MTD] [CHIPS] fix tiny spelling error in comment in cfi_cmdset_0001.cJesper Juhl
Trivial fix of a spelling error in a comment in cfi_cmdset_0001.c s/ships/chips/ Signed-off-by: Jesper Juhl <jesper.juhl@gmail.com> Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2007-06-30[MTD] OneNAND Simulator supportKyungmin Park
This simulate various OneNAND flash chips for the MTD onenand layer. It's simple implementation, only basic operations. It don't support the recent changes in NANDSIM such as lazy block allocation, bitflip, and so on. Note: This passed nand-tests. Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2007-06-30[MTD] [OneNAND] 2X program supportKyungmin Park
The 2X Program is an extension of Program Operation. Since the device is equipped with two DataRAMs, and two-plane NAND Flash memory array, these two component enables simultaneous program of 4KiB. Plane1 has only even blocks such as block0, block2, block4 while Plane2 has only odd blocks such as block1, block3, block5. So MTD regards it as 4KiB page size and 256KiB block size Now the following chips support it. (KFXXX16Q2M) Demux: KFG2G16Q2M, KFH4G16Q2M, KFW8G16Q2M, Mux: KFM2G16Q2M, KFN4G16Q2M, And more recent chips Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2007-06-29[MTD] remove dead MTD_PMC551_APERTURE_SIZE optionAdrian Bunk
The CONFIG_MTD_PMC551_APERTURE_SIZE option seems to never have existed, so there's no reason for carrying an #ifdef for it. Signed-off-by: Adrian Bunk <bunk@stusta.de> Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2007-06-29[MTD] Use proper binary multiple prefixes in pmc551 driverDavid Woodhouse
Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2007-06-29[MTD] [NAND] cafe_nand.c: the OLPC laptop is not available for $100Adrian Bunk
The price might drop to $100 in a few years. But currently, a more reasonable name might be "$175 laptop". Let's simply call it "OLPC laptop" without any price tag. Signed-off-by: Adrian Bunk <bunk@stusta.de> Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2007-06-28[MTD] [MAPS] Cleanup nettel map driverAdrian Bunk
- make 2 needlessly global functions static - remove the unused nettel_eraseconfig() Signed-off-by: Adrian Bunk <bunk@stusta.de> Cc: Greg Ungerer <gerg@snapgear.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2007-06-28[MTD] [NOR] Use NULL instead of 0 for pointer to shut sparse up.Randy Dunlap
Use NULL instead of 0 for pointer: drivers/mtd/chips/cfi_cmdset_0001.c:2258:43: warning: Using plain integer as NULL pointer Other changes by inspection. Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2007-06-28[MTD] Use mutex instead of semaphore in dataflash driverMatthias Kaehlcke
The MTD DataFlash driver uses a semaphore as mutex. Use the mutex API instead of the (binary) semaphore. Signed-off-by: Matthias Kaehlcke <matthias.kaehlcke@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2007-06-28[MTD] m25p80: Use correct units for binary multiplesDavid Woodhouse
Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2007-06-28[MTD] m25p80 handles more chips, uses JEDEC ids and small eraseblocksDavid Brownell
Update chip ID tables in m25p80 to handle more SPI flash chips, matching datasheets. All of these can use the same core operations and are newer chips that support the JEDEC "read id" instruction: - Atmel AT25 and AT26 (seven chips) - Spansion S25SL (five chips) - SST 25VF (four chips) - ST M25, M45 (five more chips) - Winbond W25X series (seven chips) That JEDEC instruction is now used, either to support a sanity check on the platform data holding board configuration data, or to determine chip type when it's not included in platform data. In fact, boards that don't need a standard partition table may not need that platform data any more. For chips that support 4KiB erase units, use that smaller block size instead of the larger size (usually 64KiB); it's less wasteful. (Tested on W25X80.) Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2007-06-28[MTD] m25p80 converted to mutexDavid Brownell
Convert semaphore usage in m25p80 driver to mutex; mention another kind of SPI flash chip that should be able to use this driver (given minor tweaks). Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2007-06-28[MTD] [NAND] Change NDFC driver to support 405 platforms tooStefan Roese
This patch adds 405 platform support to the 440 NDFC driver. The new AMCC 405EZ PPC is equipped with the same NDFC core as the 440EP(x) and other will follow soon. Signed-off-by: Stefan Roese <sr@denx.de> Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2007-06-28[MTD] mtdcore.c: share syms with mtd_blkdev.cBen Dooks
Fix the sparse warnings generated by the implicit dependency of mtd_blkdevs.c and mtd_core.c for the two symbols mtd_table and mtd_table_mutex. This is done by adding an local header file mtdcore.h to define these (including the warning about the non-proliferation of these symbols). Signed-off-by: Ben Dooks <ben-linux@fluff.org> Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2007-06-28[MTD] [NOR] cfi_cmdset_0001.c: sparse fixesBen Dooks
Fix sparse warnings generated from cfi_cmdset_0001.c. drivers/mtd/chips/cfi_cmdset_0001.c:1783:5: warning: symbol 'cfi_intelext_erase_varsize' was not declared. Should it be static? drivers/mtd/chips/cfi_cmdset_0001.c:2258:43: warning: Using plain integer as NULL pointer Signed-off-by: Ben Dooks <ben-linux@fluff.org> Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2007-06-28[MTD] [NOR] cfi_cmdset_0002.c: fix 'cfi_amdstd_erase_varsize' to be staticBen Dooks
Make cfi_amdstd_erase_varsize static, as declared at the top of the file to ensure sparse does not print a warning for an undeclared function, as so: drivers/mtd/chips/cfi_cmdset_0002.c:1612:5: warning: symbol 'cfi_amdstd_erase_varsize' was not declared. Should it be static? Signed-off-by: Ben Dooks <ben-linux@fluff.org> Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2007-06-28[MTD] mtd_blkdevs.c: do not export 'mtd_blktrans_ops'Ben Dooks
The mtd_blktrans_ops is not defined in any of the headers and is indeed not used elsewhere in the kernel, so mark it as static to reduce the warnings from sparse drivers/mtd/mtd_blkdevs.c:204:32: warning: symbol 'mtd_blktrans_ops' was not declared. Should it be static? Signed-off-by: Ben Dooks <ben-linux@fluff.org> Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2007-06-28[MTD] [NAND] nand_base.c: fix type of eccpos pointerBen Dooks
The nand_base.c driver implicitly casts the uint32_t eccpos array to 'int *', which is not only not guaranteed to be the same sign as the source, but is not guaranteed to be the same size. Fix by changing nand_base.c to use uint32_t referencing the eccpos fields. Signed-off-by: Ben Dooks <ben-linux@fluff.org> Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2007-06-28[MTD] oops and panic message logging to MTD deviceRichard Purdie
Kernel oops and panic messages are invaluable when debugging crashes. These messages often don't make it to flash based logging methods (say a syslog on jffs2) due to the overheads involved in writing to flash. This patch allows you to turn an MTD partition into a circular log buffer where kernel oops and panic messages are written to. The messages are obtained by registering a console driver and checking oops_in_progress. Erases are performed in advance to maximise the chances of a saving messages. To activate it, add console=ttyMTDx to the kernel commandline (where x is the mtd device number to use). Signed-off-by: Richard Purdie <rpurdie@openedhand.com> Signed-off-by: David Woodhouse <dwmw2@infradead.org>
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