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2010-02-26mtd: omap2: fixing compilation warningVimal Singh
Fixing below warning in compilation: drivers/mtd/nand/omap2.c: In function 'omap_write_buf_dma_pref': drivers/mtd/nand/omap2.c:508: warning: passing argument 2 of 'omap_nand_dma_transfer' discards qualifiers from pointer target type Signed-off-by: Vimal Singh <vimalsingh@ti.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2010-02-26mtd: move more manufacturers to the common cfi.h header fileGuillaume LECERF
Move MANUFACTURER_MACRONIX and MANUFACTURER_SST definitions to the include/linux/mtd/cfi.h header file and rename them to CFI_MFR_MACRONIX and CFI_MFR_SST. All references in drivers/mtd/chips/cfi_cmdset_0002.c are updated to reflect this. Signed-off-by: Guillaume LECERF <glecerf@gmail.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2010-02-26mtd: mxc_nand: add RESET command supportEric Benard
mxc_nand driver must support the RESET Command in order to support Micron NAND which need a reset before any other command. Signed-off-by: Eric Benard <eric@eukrea.com> Acked-by: Sascha Hauer <s.hauer@pengutronix.de> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2010-02-26mtd: inftl: misplaced parenthesis in find_boot_recordRoel Kluin
The parenthesis was misplaced, upon error a one was shown. [dwmw2: Fix the code not to do the assignment within the if() statement] Signed-off-by: Roel Kluin <roel.kluin@gmail.com> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2010-02-26mtd: OneNAND: do not use DMA if oops in progressAaro Koskinen
Otherwise we may hang if we are called from panic() through mtdoops. Signed-off-by: Aaro Koskinen <aaro.koskinen@nokia.com> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2010-02-26mtd: nand: add lock/unlock routinesVimal Singh
Add nand lock / unlock routines. At least 'micron' parts support this. Signed-off-by: Vimal Singh <vimalsingh@ti.com> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2010-02-26mtd: nand: create a helper verification functionVimal Singh
... verification for 'nand_erase_nand' These checks are expected to be used by 'nand_lock' and 'nand_unlock' routines too. As all these three are block aligned operations. So, creating a helper function for this makes sense. Signed-off-by: Vimal Singh <vimalsingh@ti.com> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2010-02-25mtd: maps: ceiva: do not return random numbersArtem Bityutskiy
When machine_is_ceiva() returns zero, 'clps_setup_flash()' returns a value of an unitialized variable. Fix this. Spotted by David Binderman. Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2010-02-25mtdchar: Register the full range of minor numbersBen Hutchings
register_chrdev() registers minor numbers up to 255, but we can now potentially have much larger numbers. Signed-off-by: Ben Hutchings <bhutchings@solarflare.com> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2010-02-25mtd: Raise limit on block device minor numbersBen Hutchings
add_mtd_blktrans_dev() imposes a maximum of 257 devices per block translator. This was presumably meant to prevent overflow back in the days of 8-bit minor numbers. Instead, check against MINORMASK and the limits of the partition naming scheme. Signed-off-by: Ben Hutchings <bhutchings@solarflare.com> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2010-02-25mtd: Replace static array of devices with an idr structureBen Hutchings
Signed-off-by: Ben Hutchings <bhutchings@solarflare.com> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2010-02-25mtd: mtdblock: Dynamically allocate cache info structuresBen Hutchings
Since we allocate struct mtd_blktrans_dev for each block device, we can add our own structure members to the end. Therefore embed struct mtd_blktrans_dev in struct mtdblk_dev and remove the static array of struct mtdblk_dev. Also remove the redundant pointer to struct mtd_info. This is preparation for removing the static limit on the number of MTD devices. Signed-off-by: Ben Hutchings <bhutchings@solarflare.com> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2010-02-25mtd: Remove unnecessary comparisons with MAX_MTD_DEVICESBen Hutchings
MAX_MTD_DEVICES is about to be removed. Signed-off-by: Ben Hutchings <bhutchings@solarflare.com> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2010-02-25mtd: nandsim: Define CONFIG_NANDSIM_MAX_PARTS and use it instead of ↵Ben Hutchings
MAX_MTD_DEVICES MAX_MTD_DEVICES is about to be removed. Signed-off-by: Ben Hutchings <bhutchings@solarflare.com> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2010-02-25mtd: Use get_mtd_device_nm() to find named device in get_sb_mtd()Ben Hutchings
This removes the need to know the number of MTD devices. Signed-off-by: Ben Hutchings <bhutchings@solarflare.com> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2010-02-25mtd: Introduce and use iteration macro for reading the MTD device tableBen Hutchings
Signed-off-by: Ben Hutchings <bhutchings@solarflare.com> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2010-02-25mtd: change positive error return into negativeRoel Kluin
Signed-off-by: Roel Kluin <roel.kluin@gmail.com> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2010-02-25mtd: maps: Blackfin async: rename local funcs to avoid common clashesMike Frysinger
There are new Blackfin MMR helper functions that use the same name as some of the local functions in this driver, so have the driver use more specific names to avoid the issue. 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>
2010-02-25mtd: fix different address space noiseH Hartley Sweeten
In mtd_ioctl MEMGETREGIONINFO the region_user_info pointer ur is cast in __kernel space. This produces a number of sparse warnings like: warning: cast removes address space of expression warning: incorrect type in initializer (different address spaces) expected unsigned int const [noderef] <asn:1>*register __p got unsigned int *<noident> Since argp is already a void __user * just use it dirrectly without the cast and make ur a __user *. Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2010-02-25mtd: ixp4xx: fix reading from half-word boundaryJon Ringle
Fix handling of reads that don't start on a half-word boundary. Signed-off-by: Jon Ringle <jon@ringle.org> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2010-02-25mtd: mxc-nand: don't disable clock in mxcnd-suspendUwe Kleine-König
The clock must already be off after mtd->suspend. Disabling it again results in an negative overflow of the clock usage count. This didn't hurt as mxcnd_resume undid it after wake up. Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Acked-by: Sascha Hauer <s.hauer@pengutronix.de> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2010-02-25mtd: mxc-nand: no need to check for validity of platform driver dataUwe Kleine-König
The probe function calls platform_set_drvdata with a valid pointer when the probe is successful. As mxcnd_suspend and mxcnd_resume are only called on bound devices, platform_get_drvdata always returns non-NULL. This fix isn't critical as the pointer is always valid so it doesn't matter if the compiler generated code for it or not. Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Reported-by: David Binderman <dcb314@hotmail.com> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Acked-by: Sascha Hauer <s.hauer@pengutronix.de> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2010-02-25mtd: cfi: remove unneeded NULL checksJiri Slaby
In cfi_intelext_setup and cfi_amdstd_setup, mtd is never NULL. Remove unnecessary checks. Signed-off-by: Jiri Slaby <jslaby@suse.cz> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2010-02-25mtd: nand: make Open Firmware device id constantMárton Németh
The match_table field of the struct of_device_id is constant in <linux/of_platform.h> so it is worth to make xps2_of_match also constant. The semantic match that finds this kind of pattern is as follows: (http://coccinelle.lip6.fr/) // <smpl> @r@ disable decl_init,const_decl_init; identifier I1, I2, x; @@ struct I1 { ... const struct I2 *x; ... }; @s@ identifier r.I1, y; identifier r.x, E; @@ struct I1 y = { .x = E, }; @c@ identifier r.I2; identifier s.E; @@ const struct I2 E[] = ... ; @depends on !c@ identifier r.I2; identifier s.E; @@ + const struct I2 E[] = ...; // </smpl> Signed-off-by: Márton Németh <nm127@freemail.hu> Cc: Julia Lawall <julia@diku.dk> Cc: cocci@diku.dk Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2010-02-25mtd: nand: make USB device id constantMárton Németh
The id_table field of the struct usb_device_id is constant in <linux/usb.h> so it is worth to make alauda_table also constant. The semantic match that finds this kind of pattern is as follows: (http://coccinelle.lip6.fr/) // <smpl> @r@ disable decl_init,const_decl_init; identifier I1, I2, x; @@ struct I1 { ... const struct I2 *x; ... }; @s@ identifier r.I1, y; identifier r.x, E; @@ struct I1 y = { .x = E, }; @c@ identifier r.I2; identifier s.E; @@ const struct I2 E[] = ... ; @depends on !c@ identifier r.I2; identifier s.E; @@ + const struct I2 E[] = ...; // </smpl> Signed-off-by: Márton Németh <nm127@freemail.hu> Cc: Julia Lawall <julia@diku.dk> Cc: cocci@diku.dk Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2010-02-25mtd: nand: make PCI device id constantMárton Németh
The id_table field of the struct pci_driver is constant in <linux/pci.h> so it is worth to make cafe_nand_tbl also constant. The semantic match that finds this kind of pattern is as follows: (http://coccinelle.lip6.fr/) // <smpl> @r@ disable decl_init,const_decl_init; identifier I1, I2, x; @@ struct I1 { ... const struct I2 *x; ... }; @s@ identifier r.I1, y; identifier r.x, E; @@ struct I1 y = { .x = E, }; @c@ identifier r.I2; identifier s.E; @@ const struct I2 E[] = ... ; @depends on !c@ identifier r.I2; identifier s.E; @@ + const struct I2 E[] = ...; // </smpl> Signed-off-by: Márton Németh <nm127@freemail.hu> Cc: Julia Lawall <julia@diku.dk> Cc: cocci@diku.dk Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2010-02-25mtd: nandsim: fix spellingAndrey Yurovsky
s/nanodeconds/nanoseconds Signed-off-by: Andrey Yurovsky <yurovsky@gmail.com> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2010-02-15omap2/3/4: Introducing 'gpmc-nand.c' for GPMC specific NAND initVimal Singh
Introducing 'gpmc-nand.c' for GPMC specific NAND init. For example: GPMC timing parameters and all. This patch also migrates gpmc related calls from 'nand/omap2.c' to 'gpmc-nand.c'. Signed-off-by: Vimal Singh <vimalsingh@ti.com> Signed-off-by: Tony Lindgren <tony@atomide.com>
2010-02-15MTD: remove no longer used OMAP flash mapLadislav Michl
All OMAP boards are now using physmap-flash. Cc: linux-mtd@lists.infradead.org Signed-off-by: Ladislav Michl <ladis@linux-mips.org> Signed-off-by: Tony Lindgren <tony@atomide.com>
2010-02-10mtd: orion_nand: Fix build failure caused by typoPeter Huewe
Commit e99030609e27abff7e1a868cb56384c678b09984 ("mtd: orion_nand.c: add error handling and use resource_size()") introduced a build error -- it assigns something to a undeclared variable 'err', whereas the rest of the code uses 'ret' for this task. This patch fixes this typo and thus removes the build failure. Signed-off-by: Peter Huewe <peterhuewe@gmx.de> Reviewed-by: H Hartley Sweeten <hsweeten@visionengravers.com> Acked-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2010-02-09tree-wide: Assorted spelling fixesDaniel Mack
In particular, several occurances of funny versions of 'success', 'unknown', 'therefore', 'acknowledge', 'argument', 'achieve', 'address', 'beginning', 'desirable', 'separate' and 'necessary' are fixed. Signed-off-by: Daniel Mack <daniel@caiaq.de> Cc: Joe Perches <joe@perches.com> Cc: Junio C Hamano <gitster@pobox.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2010-02-05Fix spelling of 'platform' in comments and docStefan Weil
Replace platfrom -> platform. This is a frequent spelling bug. Signed-off-by: Stefan Weil <weil@mail.berlios.de> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2010-02-04tree wide: remove execute flag from .c filesSebastian Andrzej Siewior
Signed-off-by: Sebastian Andrzej Siewior <sebastian@breakpoint.cc> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2010-02-02mtd: sh_flctl SHBUSSEL and SEL_16BIT supportMagnus Damm
This patch extends the sh_flctl driver with support for 16-bit bus configuration using SEL_16BIT and support for multiplexed pins using SHBUSSEL. Signed-off-by: Magnus Damm <damm@opensource.se> Acked-by: Yoshihiro Shimoda <shimoda.yoshihiro@renesas.com> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2010-02-02mtd: trivial sh_flctl changesMagnus Damm
This patch contains a few changes for the sh_flctl driver: - not sh7723-only driver - get rid of kconfig dependency - use dev_err() instead of printk() - use __devinit and __devexit for probe()/remove() - fix probe() return values Signed-off-by: Magnus Damm <damm@opensource.se> Acked-by: Yoshihiro Shimoda <shimoda.yoshihiro@renesas.com> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2010-02-01UBI: add write checkingArtem Bityutskiy
Add an extra debugging check function which validates writes. After every write it reads the data back, compares it with the original data, and complains if they mismatch. Useful for debugging. No-op if extra debugging checks are disabled. Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
2010-02-01UBI: simplify debugging return codesArtem Bityutskiy
UBI debugging functions were a little bit over-engineered and returned more error codes than needed, and the callers had to do useless checks. Simplify the return codes. Impact: only debugging code is affected, which means that for non-developers this is a no-op patch. Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
2010-02-01UBI: fix attaching error pathArtem Bityutskiy
In the error path of 'ubi_attach_mtd_dev()' we have a tricky situation: we have to release things differently depending on at which point the failure happening. Namely, if @ubi->dev is not initialized, we have to free everything ourselves. But if it was, we should not free the @ubi object, because it will be freed in the 'dev_release()' function. And we did not get this situation right. This patch introduces additional argument to the 'uif_init()' function. On exit, this argument indicates whether the final 'free(ubi)' will happen in 'dev_release()' or not. So the caller always knows how to properly release the resources. Impact: all memory is now correctly released when UBI fails to attach an MTD device. Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
2010-02-01UBI: support attaching by MTD character device nameArtem Bityutskiy
This patch adds a capability to attach MTD devices by their character device paths. For example, one can do: $ modprobe ubi mtd=/dev/mtd0 to attach /dev/mtd0. Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
2010-02-01UBI: mark few variables as __initdataArtem Bityutskiy
The @mtd_devs and @mtd_dev_param variables are used only during the initialization, and all functions that use the variables have the __init prefix. This means we can safely mark the variables as __initdata, which is a tiny optimization. Impact: tiny RAM consumption optimization when UBI is used as a kernel module. Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
2010-01-28Merge branch 'for-linus' of git://git.infradead.org/ubi-2.6Linus Torvalds
* 'for-linus' of git://git.infradead.org/ubi-2.6: UBI: fix volume creation input checking
2010-01-27UBI: fix volume creation input checkingMika Westerberg
Do not use an unchecked variable UBI_IOCMKVOL ioctl. Signed-off-by: Mika Westerberg <ext-mika.1.westerberg@nokia.com> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Cc: stable@vger.kernel.org
2010-01-25Merge branch 'linux-next' of git://git.infradead.org/ubi-2.6Linus Torvalds
* 'linux-next' of git://git.infradead.org/ubi-2.6: UBI: fix memory leak in update path UBI: add more checks to chdev open UBI: initialise update marker
2010-01-24Merge git://git.infradead.org/~dwmw2/mtd-2.6.33Linus Torvalds
* git://git.infradead.org/~dwmw2/mtd-2.6.33: mtd: tests: fix read, speed and stress tests on NOR flash mtd: Really add ARM pismo support kmsg_dump: Dump on crash_kexec as well
2010-01-18UBI: fix memory leak in update pathArtem Bityutskiy
When truncating an UBI volume, UBI should allocates a PEB-sized buffer but does not release it, which leads to memory leaks. This patch fixes the issue. Reported-by: Marek Skuczynski <mareksk7@gmail.com> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Tested-by: Marek Skuczynski <mareksk7@gmail.com> Cc: stable@kernel.org
2010-01-14mtd: mxc_nand: add MX25 to KconfigBaruch Siach
Signed-off-by: Baruch Siach <baruch@tkos.co.il> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
2010-01-13mtd: tests: fix read, speed and stress tests on NOR flashMorten Thunberg Svendsen
Before using block_isbad() check if mtd->block_isbad() is defined. Calculating pgcnt must be done using pgsize defined to 512 on NOR and mtd->writesize for NAND, not using mtd->writesize directly. Signed-off-by: Morten Thunberg Svendsen <mts.doredevelopment@gmail.com> Acked-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2010-01-13mtd: Really add ARM pismo supportRussell King - ARM Linux
(Commit 7cb777a3d71f9d1f7eb149c7a504d21f24219ae8 (mtd: add ARM pismo support) intended to add this, but seems only to have patched the Makefile without touching Kconfig or providing any code...) The following patch adds support for PISMO modules found on ARM Ltd development platforms. These are MTD modules, and can have a selection of SRAM, flash or DOC devices as described by an on-board I2C EEPROM. We support SRAM and NOR flash devices only by registering appropriate conventional MTD platform devices as children of the 'pismo' device. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2010-01-12UBI: add more checks to chdev openArtem Bityutskiy
When opening UBI volumes by their character device names, make sure we are opening character devices, not block devices or any other inode type. Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
2010-01-12UBI: initialise update markerPeter Horton
The in kernel copy of a volume's update marker is not initialised from the volume table. This means that volumes where an update was unfinnished will not be treated as "forbidden to use". This is basically that the update functionality was broken. Signed-off-by: Peter Horton <zero@colonel-panic.org> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Cc: stable@kernel.org
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