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2013-04-19mtdchar: remove no-longer-used vma helpersLinus Torvalds
With the conversion to vm_iomap_memory(), these vma helpers are no longer used. Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-04-19vm: convert mtdchar mmap to vm_iomap_memory() helperLinus Torvalds
This is my example conversion of a few existing mmap users. The mtdchar case is actually disabled right now (and stays disabled), but I did it because it showed up on my "git grep", and I was familiar with the code due to fixing an overflow problem in the code in commit 9c603e53d380 ("mtdchar: fix offset overflow detection"). Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-03-18Merge tag 'for-linus-20130318' of git://git.infradead.org/linux-mtdLinus Torvalds
Pull MTD fixes from David Woodhouse: "This fixes a couple of problems. Firstly, some people are actually still using old small-page flash and we broke it by removing the ready check. Secondly. fix the handling of partitions on Broadcom 47xx devices. Recent changes had made it misdetect the location of the NVRAM and scribble over the bootloader when it tried to update the variables there. With predictably sad results." * tag 'for-linus-20130318' of git://git.infradead.org/linux-mtd: mtd: nand: reintroduce NAND_NO_READRDY as NAND_NEED_READRDY mtd: bcm47xxpart: look for NVRAM at the end of device Revert "mtd: bcm47xxpart: improve probing of nvram partition"
2013-03-14mtd: nand: reintroduce NAND_NO_READRDY as NAND_NEED_READRDYBrian Norris
This partially reverts commit 1696e6bc2ae83734e64e206ac99766ea19e9a14e ("mtd: nand: kill NAND_NO_READRDY"). In that patch I overlooked a few things. The original documentation for NAND_NO_READRDY included "True for all large page devices, as they do not support autoincrement." I was conflating "not support autoincrement" with the NAND_NO_AUTOINCR option, which was in fact doing nothing. So, when I dropped NAND_NO_AUTOINCR, I concluded that I then could harmlessly drop NAND_NO_READRDY. But of course the fact the NAND_NO_AUTOINCR was doing nothing didn't mean NAND_NO_READRDY was doing nothing... So, NAND_NO_READRDY is re-introduced as NAND_NEED_READRDY and applied only to those few remaining small-page NAND which needed it in the first place. Cc: stable@kernel.org [3.5+] Reported-by: Alexander Shiyan <shc_work@mail.ru> Tested-by: Alexander Shiyan <shc_work@mail.ru> Signed-off-by: Brian Norris <computersforpeace@gmail.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2013-03-08mtd: bcm47xxpart: look for NVRAM at the end of deviceRafał Miłecki
NVRAM is always placed at the end of device and it does not have to start at the beginning of a block, so check few possible offsets. Signed-off-by: Rafał Miłecki <zajec5@gmail.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2013-03-08Revert "mtd: bcm47xxpart: improve probing of nvram partition"Rafał Miłecki
This reverts commit be3781b71ac03723b552dc156931620634ef1b22. Some CFE bootloaders have NVRAM at offset 0x1000. With that patch we were detecting such a bootloaders as a standard NVRAM partition. Changing anything in this pseudo-NVRAM resulted in corrupted bootloader and bricked device! Signed-off-by: Rafał Miłecki <zajec5@gmail.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2013-03-03fs: Limit sys_mount to only request filesystem modules.Eric W. Biederman
Modify the request_module to prefix the file system type with "fs-" and add aliases to all of the filesystems that can be built as modules to match. A common practice is to build all of the kernel code and leave code that is not commonly needed as modules, with the result that many users are exposed to any bug anywhere in the kernel. Looking for filesystems with a fs- prefix limits the pool of possible modules that can be loaded by mount to just filesystems trivially making things safer with no real cost. Using aliases means user space can control the policy of which filesystem modules are auto-loaded by editing /etc/modprobe.d/*.conf with blacklist and alias directives. Allowing simple, safe, well understood work-arounds to known problematic software. This also addresses a rare but unfortunate problem where the filesystem name is not the same as it's module name and module auto-loading would not work. While writing this patch I saw a handful of such cases. The most significant being autofs that lives in the module autofs4. This is relevant to user namespaces because we can reach the request module in get_fs_type() without having any special permissions, and people get uncomfortable when a user specified string (in this case the filesystem type) goes all of the way to request_module. After having looked at this issue I don't think there is any particular reason to perform any filtering or permission checks beyond making it clear in the module request that we want a filesystem module. The common pattern in the kernel is to call request_module() without regards to the users permissions. In general all a filesystem module does once loaded is call register_filesystem() and go to sleep. Which means there is not much attack surface exposed by loading a filesytem module unless the filesystem is mounted. In a user namespace filesystems are not mounted unless .fs_flags = FS_USERNS_MOUNT, which most filesystems do not set today. Acked-by: Serge Hallyn <serge.hallyn@canonical.com> Acked-by: Kees Cook <keescook@chromium.org> Reported-by: Kees Cook <keescook@google.com> Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
2013-03-02Merge tag 'for-linus-20130301' of git://git.infradead.org/linux-mtdLinus Torvalds
Pull MTD update from David Woodhouse: "Fairly unexciting MTD merge for 3.9: - misc clean-ups in the MTD command-line partitioning parser (cmdlinepart) - add flash locking support for STmicro chips serial flash chips, as well as for CFI command set 2 chips. - new driver for the ELM error correction HW module found in various TI chips, enable the OMAP NAND driver to use the ELM HW error correction - added number of new serial flash IDs - various fixes and improvements in the gpmi NAND driver - bcm47xx NAND driver improvements - make the mtdpart module actually removable" * tag 'for-linus-20130301' of git://git.infradead.org/linux-mtd: (45 commits) mtd: map: BUG() in non handled cases mtd: bcm47xxnflash: use pr_fmt for module prefix in messages mtd: davinci_nand: Use managed resources mtd: mtd_torturetest can cause stack overflows mtd: physmap_of: Convert device allocation to managed devm_kzalloc() mtd: at91: atmel_nand: for PMECC, add code to check the ONFI parameter ECC requirement. mtd: atmel_nand: make pmecc-cap, pmecc-sector-size in dts is optional. mtd: atmel_nand: avoid to report an error when lookup table offset is 0. mtd: bcm47xxsflash: adjust names of bus-specific functions mtd: bcm47xxpart: improve probing of nvram partition mtd: bcm47xxpart: add support for other erase sizes mtd: bcm47xxnflash: register this as normal driver mtd: bcm47xxnflash: fix message mtd: bcm47xxsflash: register this as normal driver mtd: bcm47xxsflash: write number of written bytes mtd: gpmi: add sanity check for the ECC mtd: gpmi: set the Golois Field bit for mx6q's BCH mtd: devices: elm: Removes <xx> literals in elm DT node mtd: gpmi: fix a dereferencing freed memory error mtd: fix the wrong timeo for panic_nand_wait() ...
2013-03-02Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linusLinus Torvalds
Pull MIPS updates from Ralf Baechle: o Add basic support for the Mediatek/Ralink Wireless SoC family. o The Qualcomm Atheros platform is extended by support for the new QCA955X SoC series as well as a bunch of patches that get the code ready for OF support. o Lantiq and BCM47XX platform have a few improvements and bug fixes. o MIPS has sent a few patches that get the kernel ready for the upcoming microMIPS support. o The rest of the series is made up of small bug fixes and cleanups that relate to various parts of the MIPS code. The biggy in there is a whitespace cleanup. After I was sent another set of whitespace cleanup patches I decided it was the time to clean the whitespace "issues" for once and and that touches many files below arch/mips/. Fix up silly conflicts, mostly due to whitespace cleanups. * 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus: (105 commits) MIPS: Quit exporting kernel internel break codes to uapi/asm/break.h MIPS: remove broken conditional inside vpe loader code MIPS: SMTC: fix implicit declaration of set_vi_handler MIPS: early_printk: drop __init annotations MIPS: Probe for and report hardware virtualization support. MIPS: ath79: add support for the Qualcomm Atheros AP136-010 board MIPS: ath79: add USB controller registration code for the QCA955X SoCs MIPS: ath79: add PCI controller registration code for the QCA955X SoCs MIPS: ath79: add WMAC registration code for the QCA955X SoCs MIPS: ath79: register UART for the QCA955X SoCs MIPS: ath79: add QCA955X specific glue to ath79_device_reset_{set, clear} MIPS: ath79: add GPIO setup code for the QCA955X SoCs MIPS: ath79: add IRQ handling code for the QCA955X SoCs MIPS: ath79: add clock setup code for the QCA955X SoCs MIPS: ath79: add SoC detection code for the QCA955X SoCs MIPS: ath79: add early printk support for the QCA955X SoCs MIPS: ath79: fix WMAC IRQ resource assignment mips: reserve elfcorehdr mips: Make sure kernel memory is in iomem MIPS: ath79: use dynamically allocated USB platform devices ...
2013-02-27mtd: mtd_stresstest: use prandom_bytes()Akinobu Mita
Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com> Cc: Artem Bityutskiy <dedekind1@gmail.com> Cc: David Woodhouse <dwmw2@infradead.org> Cc: "Theodore Ts'o" <tytso@mit.edu> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: David Laight <david.laight@aculab.com> Cc: Eilon Greenstein <eilong@broadcom.com> Cc: Michel Lespinasse <walken@google.com> Cc: Robert Love <robert.w.love@intel.com> Cc: Valdis Kletnieks <valdis.kletnieks@vt.edu> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-02-27mtd: mtd_subpagetest: convert to use prandom libraryAkinobu Mita
This removes home-brewed pseudo-random number generator and use prandom library. Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com> Cc: Artem Bityutskiy <dedekind1@gmail.com> Cc: David Woodhouse <dwmw2@infradead.org> Cc: "Theodore Ts'o" <tytso@mit.edu> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: David Laight <david.laight@aculab.com> Cc: Eilon Greenstein <eilong@broadcom.com> Cc: Michel Lespinasse <walken@google.com> Cc: Robert Love <robert.w.love@intel.com> Cc: Valdis Kletnieks <valdis.kletnieks@vt.edu> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-02-27mtd: mtd_speedtest: use prandom_bytesAkinobu Mita
Use prandom_bytes instead of equivalent local function. Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com> Cc: Artem Bityutskiy <dedekind1@gmail.com> Cc: David Woodhouse <dwmw2@infradead.org> Cc: "Theodore Ts'o" <tytso@mit.edu> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: David Laight <david.laight@aculab.com> Cc: Eilon Greenstein <eilong@broadcom.com> Cc: Michel Lespinasse <walken@google.com> Cc: Robert Love <robert.w.love@intel.com> Cc: Valdis Kletnieks <valdis.kletnieks@vt.edu> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-02-27mtd: mtd_pagetest: convert to use prandom libraryAkinobu Mita
This removes home-brewed pseudo-random number generator and use prandom library. Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com> Cc: Artem Bityutskiy <dedekind1@gmail.com> Cc: David Woodhouse <dwmw2@infradead.org> Cc: "Theodore Ts'o" <tytso@mit.edu> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: David Laight <david.laight@aculab.com> Cc: Eilon Greenstein <eilong@broadcom.com> Cc: Michel Lespinasse <walken@google.com> Cc: Robert Love <robert.w.love@intel.com> Cc: Valdis Kletnieks <valdis.kletnieks@vt.edu> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-02-27mtd: mtd_oobtest: convert to use prandom libraryAkinobu Mita
This removes home-brewed pseudo-random number generator and use prandom library. Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com> Cc: Artem Bityutskiy <dedekind1@gmail.com> Cc: David Woodhouse <dwmw2@infradead.org> Cc: "Theodore Ts'o" <tytso@mit.edu> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: David Laight <david.laight@aculab.com> Cc: Eilon Greenstein <eilong@broadcom.com> Cc: Michel Lespinasse <walken@google.com> Cc: Robert Love <robert.w.love@intel.com> Cc: Valdis Kletnieks <valdis.kletnieks@vt.edu> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-02-27mtd: mtd_nandecctest: use prandom_bytes instead of get_random_bytes()Akinobu Mita
Using prandom_bytes() is enough. Because this data is only used for testing, not used for cryptographic use. Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com> Cc: Artem Bityutskiy <dedekind1@gmail.com> Cc: David Woodhouse <dwmw2@infradead.org> Cc: "Theodore Ts'o" <tytso@mit.edu> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: David Laight <david.laight@aculab.com> Cc: Eilon Greenstein <eilong@broadcom.com> Cc: Michel Lespinasse <walken@google.com> Cc: Robert Love <robert.w.love@intel.com> Cc: Valdis Kletnieks <valdis.kletnieks@vt.edu> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-02-27mtd: convert to idr_alloc()Tejun Heo
Convert to the much saner new idr interface. Signed-off-by: Tejun Heo <tj@kernel.org> Tested-by: Ezequiel Garcia <ezequiel.garcia@free-electrons.com> Cc: David Woodhouse <dwmw2@infradead.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-02-26Merge branch 'for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs Pull vfs pile (part one) from Al Viro: "Assorted stuff - cleaning namei.c up a bit, fixing ->d_name/->d_parent locking violations, etc. The most visible changes here are death of FS_REVAL_DOT (replaced with "has ->d_weak_revalidate()") and a new helper getting from struct file to inode. Some bits of preparation to xattr method interface changes. Misc patches by various people sent this cycle *and* ocfs2 fixes from several cycles ago that should've been upstream right then. PS: the next vfs pile will be xattr stuff." * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: (46 commits) saner proc_get_inode() calling conventions proc: avoid extra pde_put() in proc_fill_super() fs: change return values from -EACCES to -EPERM fs/exec.c: make bprm_mm_init() static ocfs2/dlm: use GFP_ATOMIC inside a spin_lock ocfs2: fix possible use-after-free with AIO ocfs2: Fix oops in ocfs2_fast_symlink_readpage() code path get_empty_filp()/alloc_file() leave both ->f_pos and ->f_version zero target: writev() on single-element vector is pointless export kernel_write(), convert open-coded instances fs: encode_fh: return FILEID_INVALID if invalid fid_type kill f_vfsmnt vfs: kill FS_REVAL_DOT by adding a d_weak_revalidate dentry op nfsd: handle vfs_getattr errors in acl protocol switch vfs_getattr() to struct path default SET_PERSONALITY() in linux/elf.h ceph: prepopulate inodes only when request is aborted d_hash_and_lookup(): export, switch open-coded instances 9p: switch v9fs_set_create_acl() to inode+fid, do it before d_instantiate() 9p: split dropping the acls from v9fs_set_create_acl() ...
2013-02-26Merge branch 'next' of git://git.infradead.org/users/vkoul/slave-dmaLinus Torvalds
Pull slave-dmaengine updates from Vinod Koul: "This is fairly big pull by my standards as I had missed last merge window. So we have the support for device tree for slave-dmaengine, large updates to dw_dmac driver from Andy for reusing on different architectures. Along with this we have fixes on bunch of the drivers" Fix up trivial conflicts, usually due to #include line movement next to each other. * 'next' of git://git.infradead.org/users/vkoul/slave-dma: (111 commits) Revert "ARM: SPEAr13xx: Pass DW DMAC platform data from DT" ARM: dts: pl330: Add #dma-cells for generic dma binding support DMA: PL330: Register the DMA controller with the generic DMA helpers DMA: PL330: Add xlate function DMA: PL330: Add new pl330 filter for DT case. dma: tegra20-apb-dma: remove unnecessary assignment edma: do not waste memory for dma_mask dma: coh901318: set residue only if dma is in progress dma: coh901318: avoid unbalanced locking dmaengine.h: remove redundant else keyword dma: of-dma: protect list write operation by spin_lock dmaengine: ste_dma40: do not remove descriptors for cyclic transfers dma: of-dma.c: fix memory leakage dw_dmac: apply default dma_mask if needed dmaengine: ioat - fix spare sparse complain dmaengine: move drivers/of/dma.c -> drivers/dma/of-dma.c ioatdma: fix race between updating ioat->head and IOAT_COMPLETION_PENDING dw_dmac: add support for Lynxpoint DMA controllers dw_dmac: return proper residue value dw_dmac: fill individual length of descriptor ...
2013-02-26export kernel_write(), convert open-coded instancesAl Viro
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2013-02-22new helper: file_inode(file)Al Viro
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2013-02-21Merge tag 'dt' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-socLinus Torvalds
Pull ARM SoC device tree conversions from Arnd Bergmann: "These are device tree conversions for a number of platforms, with the intention of turning code from board files into device tree descriptions. Notable changes are: - davinci bindings for pinctrl, MTD, RTC, watchdog and i2c - nomadik bindings for all devices, removing the board files - bcm2835 bindings for mmc and i2c - tegra bindings for hdmi, keyboard, audio, as well as some updates - at91 bindings for hardware ecc and for devices on RM9200 - mxs bindings for cfa100xx - sunxi support for Miniand Hackberry board" * tag 'dt' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (72 commits) Revert "sunxi: a10-cubieboard: Add user LEDs to the device tree" Revert "sunxi: a13-olinuxino: Add user LED to the device tree" clk: tegra: initialise parent of uart clocks ARM: tegra: remove clock-frequency properties from serial nodes clk: tegra: fix driver to match DT binding clk: tegra: local arrays should be static clk: tegra: Add missing spinlock for hclk and pclk clk: tegra: Implement locking for super clock clk: tegra: fix wrong clock index between se to sata_cold sunxi: a13-olinuxino: Add user LED to the device tree ARM: davinci: da850 DT: add support for machine reboot ARM: davinci: da850: add wdt DT node ARM: davinci: da850: add DT node for I2C0 ARM: at91: at91sam9n12: add DT parameters to enable PMECC ARM: at91: at91sam9x5: add DT parameters to enable PMECC ARM: at91: add EMAC bindings to RM9200 DT ARM: at91: add SSC bindings to RM9200 DT ARM: at91: add MMC bindings to RM9200 DT ARM: at91: Animeo IP: enable watchdog support ARM: nomadik: fix OF compilation regression ...
2013-02-21Merge tag 'drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-socLinus Torvalds
Pull ARM SoC driver specific changes from Arnd Bergmann: - Updates to the ux500 cpufreq code - Moving the u300 DMA controller driver to drivers/dma - Moving versatile express drivers out of arch/arm for sharing with arch/arm64 - Device tree bindings for the OMAP General Purpose Memory Controller * tag 'drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (27 commits) ARM: OMAP2+: gpmc: Add device tree documentation for elm handle ARM: OMAP2+: gpmc: add DT bindings for OneNAND ARM: OMAP2+: gpmc-onenand: drop __init annotation mtd: omap-onenand: pass device_node in platform data ARM: OMAP2+: Prevent potential crash if GPMC probe fails ARM: OMAP2+: gpmc: Remove unneeded of_node_put() arm: Move sp810.h to include/linux/amba/ ARM: OMAP: gpmc: add DT bindings for GPMC timings and NAND ARM: OMAP: gpmc: enable hwecc for AM33xx SoCs ARM: OMAP: gpmc-nand: drop __init annotation mtd: omap-nand: pass device_node in platform data ARM: OMAP: gpmc: don't create devices from initcall on DT dma: coh901318: cut down on platform data abstraction dma: coh901318: merge header files dma: coh901318: push definitions into driver dma: coh901318: push header down into the DMA subsystem dma: coh901318: skip hard-coded addresses dma: coh901318: remove hardcoded target addresses dma: coh901318: push platform data into driver dma: coh901318: create a proper platform data file ...
2013-02-21Merge tag 'driver-core-3.9-rc1' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core Pull driver core patches from Greg Kroah-Hartman: "Here is the big driver core merge for 3.9-rc1 There are two major series here, both of which touch lots of drivers all over the kernel, and will cause you some merge conflicts: - add a new function called devm_ioremap_resource() to properly be able to check return values. - remove CONFIG_EXPERIMENTAL Other than those patches, there's not much here, some minor fixes and updates" Fix up trivial conflicts * tag 'driver-core-3.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core: (221 commits) base: memory: fix soft/hard_offline_page permissions drivercore: Fix ordering between deferred_probe and exiting initcalls backlight: fix class_find_device() arguments TTY: mark tty_get_device call with the proper const values driver-core: constify data for class_find_device() firmware: Ignore abort check when no user-helper is used firmware: Reduce ifdef CONFIG_FW_LOADER_USER_HELPER firmware: Make user-mode helper optional firmware: Refactoring for splitting user-mode helper code Driver core: treat unregistered bus_types as having no devices watchdog: Convert to devm_ioremap_resource() thermal: Convert to devm_ioremap_resource() spi: Convert to devm_ioremap_resource() power: Convert to devm_ioremap_resource() mtd: Convert to devm_ioremap_resource() mmc: Convert to devm_ioremap_resource() mfd: Convert to devm_ioremap_resource() media: Convert to devm_ioremap_resource() iommu: Convert to devm_ioremap_resource() drm: Convert to devm_ioremap_resource() ...
2013-02-15MIPS: BCM47XX: add bcm47xx prefix in front of nvram function namesHauke Mehrtens
The nvram functions are exported and used by some normal drivers. To prevent name clashes with ofter parts of the kernel code add a bcm47xx_ prefix in front of the function names and the header file name. Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de> Patchwork: http://patchwork.linux-mips.org/patch/4744/ Signed-off-by: John Crispin <blogic@openwrt.org>
2013-02-13mtd: bcm47xxnflash: use pr_fmt for module prefix in messagesRafał Miłecki
Signed-off-by: Rafał Miłecki <zajec5@gmail.com> Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
2013-02-13mtd: davinci_nand: Use managed resourcesMrugesh Katepallewar
davinci_nand driver currently uses normal kzalloc, ioremap and get_clk routines. This patch replaces these routines with devm_kzalloc, devm_request_and_ioremap and devm_clk_get resp. Signed-off-by: Mrugesh Katepallewar <mrugesh.mk@ti.com> Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
2013-02-13mtd: mtd_torturetest can cause stack overflowsAl Cooper
mtd_torturetest uses the module parm "ebcnt" to control the size of a stack based array of int's. When "ebcnt" is large, Ex: 1000, it causes stack overflows on systems with small kernel stacks. The fix is to move the array from the stack to kmalloc memory. Signed-off-by: Al Cooper <alcooperx@gmail.com> Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
2013-02-12mtd: physmap_of: Convert device allocation to managed devm_kzalloc()Ezequiel Garcia
Signed-off-by: Ezequiel Garcia <ezequiel.garcia@free-electrons.com> Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
2013-02-12mtd: at91: atmel_nand: for PMECC, add code to check the ONFI parameter ECC ↵Josh Wu
requirement. This patch will check NAND flash's ecc minimum requirement in ONFI parameter. 1. if pmecc-cap, pmecc-sector-size is set in dts. then use it. Driver will print out a WARNING if the values are different from ONFI parameters. 2. if pmecc-cap, pmecc-sector-size is not set in dts, then use the value from ONFI parameters. * If ONFI ECC parameters are in ONFI extended parameter page, since we are not support it, so assume the minimum ecc requirement is 2 bits in 512 bytes. * For non-ONFI support nand flash, also assume the minimum ecc requirement is 2 bits in 512 bytes. Signed-off-by: Josh Wu <josh.wu@atmel.com> Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
2013-02-12mtd: atmel_nand: make pmecc-cap, pmecc-sector-size in dts is optional.Josh Wu
If those two are not specified in dts file, driver will report an error. TODO: in this case, driver will find ecc requirement in NAND ONFI parameters. Signed-off-by: Josh Wu <josh.wu@atmel.com> Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
2013-02-12mtd: atmel_nand: avoid to report an error when lookup table offset is 0.Josh Wu
Before this patch, we assume the whole ROM code are mapping to memory. So it is wrong if the lookup table offset is 0. After this patch, we can map only the lookup table of ROM code to memory intead of the whole ROM code (about 1M). In this case, one lookup table offset can be 0. Signed-off-by: Josh Wu <josh.wu@atmel.com> Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
2013-02-05Merge tag 'for-linus-20130204' of git://git.infradead.org/linux-mtdLinus Torvalds
Pull MTD fixes from David Woodhouse: "A small set of simple regression and build fixes for 3.8: - Fix a warning introduced in ONFI NAND probe - Fix commandline partition parsing - Require BITREVERSE for DiskOnChip G3 driver - Fix build failure for davinci_nand as module - Bump NFLASH_READY_RETRIES for bcm47xxnflash" * tag 'for-linus-20130204' of git://git.infradead.org/linux-mtd: mtd: nand: onfi don't WARN if we are in 16 bits mode mtd: physmap_of: fix cmdline partition method w/o linux, mtd-name mtd: docg3 fix missing bitreverse lib mtd: davinci_nand: fix modular build with CONFIG_OF=y mtd: bcm47xxnflash: increase NFLASH_READY_RETRIES
2013-02-04mtd: bcm47xxsflash: adjust names of bus-specific functionsRafał Miłecki
Signed-off-by: Rafał Miłecki <zajec5@gmail.com> Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
2013-02-04mtd: bcm47xxpart: improve probing of nvram partitionHauke Mehrtens
The nvram in the nvram partition does not start at the beginning of the partition on every device. Sometimes they are stating in the middle of a partition or the first 0x1000 bytes are free. Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de> Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
2013-02-04mtd: bcm47xxpart: add support for other erase sizesHauke Mehrtens
To make the partitions writable they should aligned to erase sizes of the flash. If the erase size is small use 0x10000. Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de> Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
2013-02-04mtd: bcm47xxnflash: register this as normal driverHauke Mehrtens
When platform_driver_probe() is used and no device is registered for this driver -ENODEV is returned and and error message is shown. Not all BCM47xx SoC have a nand flash chip controller and chip and for them an error message was shown. Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de> Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
2013-02-04mtd: bcm47xxnflash: fix messageHauke Mehrtens
This is not a serial flash driver, but a nand flash driver Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de> Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
2013-02-04mtd: bcm47xxsflash: register this as normal driverHauke Mehrtens
When platform_driver_probe() is used and no device is registered for this driver -ENODEV is returned and and error message is shown. Not all BCM47xx SoC have a serial flash chip controller and chip and for them an error message was shown. Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de> Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
2013-02-04mtd: bcm47xxsflash: write number of written bytesHauke Mehrtens
The callback assumes the number of read bytes is written to retlen. Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de> Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
2013-02-04mtd: gpmi: add sanity check for the ECCHuang Shijie
We do the check based on the following two facts: [1] The mx23/mx28 can only support 20-bits ECC, while the mx6 can supports 40-bits ECC. [2] The mx23/mx28 can only support the GF13, while the mx6 can supports GF13 and GF14. Signed-off-by: Huang Shijie <b32955@freescale.com> Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
2013-02-04mtd: gpmi: set the Golois Field bit for mx6q's BCHHuang Shijie
The GF13 can be only used in the following case: The ECC data chunk is less then 1K bytes. In mx23/mx28, the ecc data chunk is 512 bytes. So it is okay. But in mx6q, we begin to use some large nand chip whose ecc data chunk maybe 1K bytes long. So when the data chunk is 1K bytes, we have to use the GF14. This patch sets the Golois Field bit when the GF14 is needed. Signed-off-by: Huang Shijie <b32955@freescale.com> Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
2013-02-04mtd: devices: elm: Removes <xx> literals in elm DT nodePhilip Avinash
As part of removing generalized dependency, replace <xx> literal fields in DT compatible field with <52> for am335x platforms. Signed-off-by: Philip Avinash <avinashphilip@ti.com> Acked-by: Peter Korsgaard <jacmet@sunsite.dk> Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
2013-02-04mtd: gpmi: fix a dereferencing freed memory errorHuang Shijie
The patch "490e280 mtd: gpmi-nand: Convert to module_platform_driver()" introduced a "dereferencing freed memory" error. This patch fixes it. Signed-off-by: Huang Shijie <b32955@freescale.com> Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
2013-02-04mtd: fix the wrong timeo for panic_nand_wait()Huang Shijie
The panic_nand_wait() expects the timeo in ms and not in jiffies. But in nand_wait(), the timeo for panic_nand_wait() is assigned with wrong value(jiffies + some delay). The timeo should be set like the panic_nand_write() does. This patch passes timeo in ms to panic_nand_wait(). And this patch also passes timeo in jiffies(converted by msecs_to_jiffies) to time_before() which makes the code more readable. Signed-off-by: Huang Shijie <b32955@freescale.com> Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
2013-02-04mtd: cfi_cmdset_0002: Support Persistent Protection Bits (PPB) lockingStefan Roese
Currently cfi_cmdset_0002.c does not support PPB locking of sectors. This patch adds support for this locking/unlocking mechanism. It is needed on some platforms, since newer U-Boot versions do support this PPB locking and protect for example their environment sector(s) this way. This PPB locking/unlocking will be enabled for all devices supported by cfi_cmdset_0002 reporting 8 in the CFI word 0x49 (Sector Protect/Unprotect scheme). Please note that PPB locking does support sector-by-sector locking. But the whole chip can only be unlocked together. So unlocking one sector will automatically unlock all sectors of this device. Because of this chip limitation, the PPB unlocking function saves the current locking status of all sectors before unlocking the whole device. After unlocking the saved locking status is re-configured. This way only the addressed sectors will be unlocked. To selectively enable this advanced sector protection mechanism, the device-tree property "use-advanced-sector-protection" has been created. To enable support for this locking this property needs to be present in the flash DT node. E.g.: nor_flash@0,0 { compatible = "amd,s29gl256n", "cfi-flash"; bank-width = <2>; use-advanced-sector-protection; ... Tested with Spansion S29GL512S10THI and Micron JS28F512M29EWx flash devices. Signed-off-by: Stefan Roese <sr@denx.de> Tested-by: Holger Brunck <holger.brunck@keymile.com> Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
2013-02-04mtd: Allow removal of partitioning modulesLubomir Rintel
Signed-off-by: Lubomir Rintel <lkundrak@v3.sk> Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
2013-02-04mtd: cmdlinepart: Make it into a moduleLubomir Rintel
All other partitioning schemes can be compiled as modules Signed-off-by: Lubomir Rintel <lkundrak@v3.sk> Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
2013-02-04mtd: gpmi: dump the BCH registersHuang Shijie
Dump the BCH registers in gpmi_dump_info(). Signed-off-by: Huang Shijie <b32955@freescale.com> Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
2013-02-04mtd: nane: print source of error messageTormod Volden
Add the function name to the error message. These messages are not very helpful: [183356.176682] uncorrectable error : [183356.180273] uncorrectable error : [183356.184194] uncorrectable error : [183356.187773] uncorrectable error : [183356.191280] uncorrectable error : Artem: amended the patch a bit Signed-off-by: Tormod Volden <debian.tormod@gmail.com>
2013-02-04mtd: fsl_ifc_nand: use more portable i/o accessorsKim Phillips
in/out_be32 accessors are Power arch centric whereas ioread/writebe32 are available in other arches. Since the IFC device registers are annotated big endian in fsl_ifc.h, the accessor annotations now match, resulting in the pleasant side-effect of this patch silencing sparse endian warnings such as the following: drivers/mtd/nand/fsl_ifc_nand.c:179:19: warning: incorrect type in argument 1 (different base types) drivers/mtd/nand/fsl_ifc_nand.c:179:19: expected unsigned int volatile [noderef] [usertype] <asn:2>*addr drivers/mtd/nand/fsl_ifc_nand.c:179:19: got restricted __be32 [noderef] <asn:2>*<noident> Signed-off-by: Kim Phillips <kim.phillips@freescale.com> Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>