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path: root/drivers/mtd/cmdlinepart.c
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2012-11-15mtd: cmdlinepart: fix the overflow of big mtd partitionsHuang Shijie
When the kernel parses the following cmdline #mtdparts=gpmi-nand:16m(boot),16m(kernel),1g(home),4g(test),-(usr) for a big nand chip Micron MT29F64G08AFAAAWP(8GB), we got the following wrong result: ............................................. "mtd: partition size too small (0)" ............................................. We can not get any partition. The "4g(test)" partition triggers a overflow of the "size". The memparse() returns 4g to the "size", but the size is "unsigned long" type, so a overflow occurs, the "size" becomes zero in the end. This patch changes the "size"/"offset" to "unsigned long long" type, and replaces the UINT_MAX with ULLONG_MAX for macros SIZE_REMAINING and OFFSET_CONTINUOUS. Signed-off-by: Huang Shijie <b32955@freescale.com> Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
2012-11-15mtd: cmdlinepart: Simplify parse_cmdline_partitionsShmulik Ladkani
Simply 'parse_cmdline_partitions': the outer loop iterating over 'partitions' is actually a search loop, it does not execute the inner loop for each partition, only for the matched partition. Let's break when search is successful, and move all inner code (relevant only for the matched partition) outside of the outer loop. Resulting code is much more readable, and makes the indent level sane. Signed-off-by: Shmulik Ladkani <shmulik.ladkani@gmail.com> Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
2012-09-29mtd: cmdlinepart: make the partitions rule more strictShmulik Ladkani
Huang Shijie <shijie8@gmail.com> explains: Assume we have a 1GiB(8Gib) NAND chip, and we set the partitions in the command line like this: #gpmi-nand:100m(boot),100m(kernel),1g(rootfs) In this case, the partition truncating occurs. The current code will get the following result: ---------------------------------- root@freescale ~$ cat /proc/mtd dev: size erasesize name mtd0: 06400000 00040000 "boot" mtd1: 06400000 00040000 "kernel" ---------------------------------- It is obvious that we lost the truncated partition `rootfs` which should be 824MiB in this case. Also, forbid 0-sized partitions. Signed-off-by: Shmulik Ladkani <shmulik.ladkani@gmail.com> Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-09-29mtd: cmdlinepart: minor cleanupsArtem Bityutskiy
Clean-up the driver a bit to make it easier to read and amend the coding style. Mostly these are changes like: if (a) { } => if (a) { } Some extra blank lines were added. Indentation was changed to use tabs instead of spaces. Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-09-29mtd: cmdlinepart: revise error handlingArtem Bityutskiy
This patch revises and fixes error handling in the command line mtd partitions parser. Namely: 1. we ignored return code of 'mtdpart_setup_real()'. 2. instead of returning 0 for failure and 1 for success, teach 'mtdpart_setup_real()' to return real error codes. Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-09-29mtd: cmdlinepart: remove unneeded initializationArtem Bityutskiy
We do not have to initialize variables for .bss to 0 in Linux. Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-05-13mtd: cmdlinepart: fix commentaryPeter Meerwald
Signed-off-by: Peter Meerwald <p.meerwald@bct-electronic.com> Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2011-11-07Merge git://git.infradead.org/mtd-2.6Linus Torvalds
* git://git.infradead.org/mtd-2.6: (226 commits) mtd: tests: annotate as DANGEROUS in Kconfig mtd: tests: don't use mtd0 as a default mtd: clean up usage of MTD_DOCPROBE_ADDRESS jffs2: add compr=lzo and compr=zlib options jffs2: implement mount option parsing and compression overriding mtd: nand: initialize ops.mode mtd: provide an alias for the redboot module name mtd: m25p80: don't probe device which has status of 'disabled' mtd: nand_h1900 never worked mtd: Add DiskOnChip G3 support mtd: m25p80: add EON flash EN25Q32B into spi flash id table mtd: mark block device queue as non-rotational mtd: r852: make r852_pm_ops static mtd: m25p80: add support for at25df321a spi data flash mtd: mxc_nand: preset_v1_v2: unlock all NAND flash blocks mtd: nand: switch `check_pattern()' to standard `memcmp()' mtd: nand: invalidate cache on unaligned reads mtd: nand: do not scan bad blocks with NAND_BBT_NO_OOB set mtd: nand: wait to set BBT version mtd: nand: scrub BBT on ECC errors ... Fix up trivial conflicts: - arch/arm/mach-at91/board-usb-a9260.c Merged into board-usb-a926x.c - drivers/mtd/maps/lantiq-flash.c add_mtd_partitions -> mtd_device_register vs changed to use mtd_device_parse_register.
2011-10-31mtd: Add module.h to drivers users that were implicitly using it.Paul Gortmaker
We are cleaning up the implicit presence of module.h that these drivers are taking advantage of. Fix them in advance of the cleanup operation. Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
2011-09-11mtd: abstract last MTD partition parser argumentDmitry Eremin-Solenikov
Encapsulate last MTD partition parser argument into a separate structure. Currently it holds only 'origin' field for RedBoot parser, but will be extended in future to contain at least device_node for OF devices. Amended commentary to make kerneldoc happy Signed-off-by: Dmitry Eremin-Solenikov <dbaryshkov@gmail.com> Signed-off-by: Artem Bityutskiy <dedekind1@gmail.com>
2011-09-11mtd: remove printk's for [kv][mz]alloc failuresBrian Norris
When a memory allocation fails, the kernel will print out a backtrace automatically. These print statements are unnecessary. Signed-off-by: Brian Norris <computersforpeace@gmail.com> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
2010-08-08mtd: Update copyright noticesDavid Woodhouse
Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2009-06-25mtd: cmdlineparts: Use 64-bit format when printing a debug message.Thadeu Lima de Souza Cascardo
Commit 69423d99fc182a81f3c5db3eb5c140acc6fc64be ("[MTD] update internal API to support 64-bit device size") has changed some structure values to 64-bit and has not updated this debug message, since it's not built by default. Signed-off-by: Thadeu Lima de Souza Cascardo <cascardo@holoscopio.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2009-03-20[MTD] mtdpart: Make all partition parsers return allocated arrayAtsushi Nemoto
Currently redboot and afx parser return allocated mtd_partition array and cmdlinepart and ar7 return persistent array. This patch make cmdlinepart and ar7 also return allocated array, so that all users can free it regardless of parser type. Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2008-10-18[MTD] cmdlineparts documentation change - explain where mtd-id comes fromPhilip Rakity
Signed-off-by: Philip Rakity <prakity@yahoo.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2008-07-11[MTD] Fix const assignment in the MTD command line partitioning driverDavid Howells
Fix const to non-const pointer assignment in the MTD command line partitioning driver. Signed-off-by: David Howells <dhowells@redhat.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2008-06-04MTD/JFFS2: remove CVS keywordsAdrian Bunk
Once upon a time, the MTD repository was using CVS. This patch therefore removes all usages of the no longer updated CVS keywords from the MTD code. This also includes code that printed them to the user. Signed-off-by: Adrian Bunk <bunk@kernel.org> Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2008-04-22[MTD] cmdlinepart: Missing partition info is not an errorPeter Korsgaard
Return 0 partitions instead of -EINVAL on no mtdpart= argument in kernel cmdline or missing partition info for device. Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk> Acked-by: Stefan Roese <sr@denx.de> Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2008-04-22[MTD] cmdlinepart.c: don't compare pointers with 0Adrian Bunk
Sparse spotted that 0 was compared to pointers. While I was at it, I also moved the assignments out of the if's. Signed-off-by: Adrian Bunk <bunk@kernel.org> Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2008-02-03[MTD] Unlocking all Intel flash that is locked on power up.Justin Treon
Patch for unlocking all Intel flash that has instant locking on power up. The patch has been tested on Intel M18, P30 and J3D Strata Flash. 1. The automatic unlocking can be disabled for a particular partition in the map or the command line. a. For the bit mask in the map it should look like: .mask_flags = MTD_POWERUP_LOCK, b. For the command line parsing it should look like: mtdparts=0x80000(bootloader)lk 2. This will only unlock parts with instant individual block locking. Intel parts with legacy unlocking will not be unlocked. Signed-off-by: Justin Treon <justin_treon@yahoo.com> Signed-off-by: Jared Hulbert <jaredeh@gmail.com> Acked-by: Nicolas Pitre <nico@cam.org> Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2006-11-28[MTD] replace kmalloc+memset with kzallocBurman Yan
Signed-off-by: Yan Burman <yan_952@hotmail.com> Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2006-11-28[MTD] make drivers/mtd/cmdlinepart.c:mtdpart_setup() staticAdrian Bunk
This patch makes the needlessly global mtdpart_setup() static. Signed-off-by: Adrian Bunk <bunk@stusta.de> Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2006-03-31[PATCH] mtd cmdlinepart: allow zero offset valueAtsushi Nemoto
Current cmdlinepart.c uses offset value 0 to specify a continuous partition. This prevents creating a second partition starting at 0. For example, I can split 4MB device using "mtdparts=id:2M,2M", but I can not do "mtdparts=id:2M@2M,2M@0" to swap mtd0 and mtd1. This patch introduces special OFFSET_CONTINUOUS value for a continuous partition and allows 0 for offset value. Also this patch replaces 0xffffffff with UINT_MAX for SIZE_REMAINING. Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp> Cc: Thomas Gleixner <tglx@linutronix.de> Acked-by: David Woodhouse <dwmw2@infradead.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-11-07[MTD] core: Clean up trailing white spacesThomas Gleixner
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2005-06-29[MTD] Fix commandline parser alignementJoern Engel
Add alignment to cmdline. From: "Timofei V. Bondarenko" <tim@ipi.ac.ru> Signed-off-by: Joern Engel <joern@wohnheim.fh-wedel.de> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2005-04-16Linux-2.6.12-rc2v2.6.12-rc2Linus Torvalds
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
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