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* scripts/spelling.txt: add "disble(d)" pattern and fix typo instancesMasahiro Yamada2017-03-091-1/+1
| | | | | | | | | | | | | | | | Fix typos and add the following to the scripts/spelling.txt: disble||disable disbled||disabled I kept the TSL2563_INT_DISBLED in /drivers/iio/light/tsl2563.c untouched. The macro is not referenced at all, but this commit is touching only comment blocks just in case. Link: http://lkml.kernel.org/r/1481573103-11329-20-git-send-email-yamada.masahiro@socionext.com Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* Merge branch 'rebased-statx' of ↵Linus Torvalds2017-03-032-2/+2
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs Pull vfs 'statx()' update from Al Viro. This adds the new extended stat() interface that internally subsumes our previous stat interfaces, and allows user mode to specify in more detail what kind of information it wants. It also allows for some explicit synchronization information to be passed to the filesystem, which can be relevant for network filesystems: is the cached value ok, or do you need open/close consistency, or what? From David Howells. Andreas Dilger points out that the first version of the extended statx interface was posted June 29, 2010: https://www.spinics.net/lists/linux-fsdevel/msg33831.html * 'rebased-statx' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: statx: Add a system call to make enhanced file info available
| * statx: Add a system call to make enhanced file info availableDavid Howells2017-03-022-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add a system call to make extended file information available, including file creation and some attribute flags where available through the underlying filesystem. The getattr inode operation is altered to take two additional arguments: a u32 request_mask and an unsigned int flags that indicate the synchronisation mode. This change is propagated to the vfs_getattr*() function. Functions like vfs_stat() are now inline wrappers around new functions vfs_statx() and vfs_statx_fd() to reduce stack usage. ======== OVERVIEW ======== The idea was initially proposed as a set of xattrs that could be retrieved with getxattr(), but the general preference proved to be for a new syscall with an extended stat structure. A number of requests were gathered for features to be included. The following have been included: (1) Make the fields a consistent size on all arches and make them large. (2) Spare space, request flags and information flags are provided for future expansion. (3) Better support for the y2038 problem [Arnd Bergmann] (tv_sec is an __s64). (4) Creation time: The SMB protocol carries the creation time, which could be exported by Samba, which will in turn help CIFS make use of FS-Cache as that can be used for coherency data (stx_btime). This is also specified in NFSv4 as a recommended attribute and could be exported by NFSD [Steve French]. (5) Lightweight stat: Ask for just those details of interest, and allow a netfs (such as NFS) to approximate anything not of interest, possibly without going to the server [Trond Myklebust, Ulrich Drepper, Andreas Dilger] (AT_STATX_DONT_SYNC). (6) Heavyweight stat: Force a netfs to go to the server, even if it thinks its cached attributes are up to date [Trond Myklebust] (AT_STATX_FORCE_SYNC). And the following have been left out for future extension: (7) Data version number: Could be used by userspace NFS servers [Aneesh Kumar]. Can also be used to modify fill_post_wcc() in NFSD which retrieves i_version directly, but has just called vfs_getattr(). It could get it from the kstat struct if it used vfs_xgetattr() instead. (There's disagreement on the exact semantics of a single field, since not all filesystems do this the same way). (8) BSD stat compatibility: Including more fields from the BSD stat such as creation time (st_btime) and inode generation number (st_gen) [Jeremy Allison, Bernd Schubert]. (9) Inode generation number: Useful for FUSE and userspace NFS servers [Bernd Schubert]. (This was asked for but later deemed unnecessary with the open-by-handle capability available and caused disagreement as to whether it's a security hole or not). (10) Extra coherency data may be useful in making backups [Andreas Dilger]. (No particular data were offered, but things like last backup timestamp, the data version number and the DOS archive bit would come into this category). (11) Allow the filesystem to indicate what it can/cannot provide: A filesystem can now say it doesn't support a standard stat feature if that isn't available, so if, for instance, inode numbers or UIDs don't exist or are fabricated locally... (This requires a separate system call - I have an fsinfo() call idea for this). (12) Store a 16-byte volume ID in the superblock that can be returned in struct xstat [Steve French]. (Deferred to fsinfo). (13) Include granularity fields in the time data to indicate the granularity of each of the times (NFSv4 time_delta) [Steve French]. (Deferred to fsinfo). (14) FS_IOC_GETFLAGS value. These could be translated to BSD's st_flags. Note that the Linux IOC flags are a mess and filesystems such as Ext4 define flags that aren't in linux/fs.h, so translation in the kernel may be a necessity (or, possibly, we provide the filesystem type too). (Some attributes are made available in stx_attributes, but the general feeling was that the IOC flags were to ext[234]-specific and shouldn't be exposed through statx this way). (15) Mask of features available on file (eg: ACLs, seclabel) [Brad Boyer, Michael Kerrisk]. (Deferred, probably to fsinfo. Finding out if there's an ACL or seclabal might require extra filesystem operations). (16) Femtosecond-resolution timestamps [Dave Chinner]. (A __reserved field has been left in the statx_timestamp struct for this - if there proves to be a need). (17) A set multiple attributes syscall to go with this. =============== NEW SYSTEM CALL =============== The new system call is: int ret = statx(int dfd, const char *filename, unsigned int flags, unsigned int mask, struct statx *buffer); The dfd, filename and flags parameters indicate the file to query, in a similar way to fstatat(). There is no equivalent of lstat() as that can be emulated with statx() by passing AT_SYMLINK_NOFOLLOW in flags. There is also no equivalent of fstat() as that can be emulated by passing a NULL filename to statx() with the fd of interest in dfd. Whether or not statx() synchronises the attributes with the backing store can be controlled by OR'ing a value into the flags argument (this typically only affects network filesystems): (1) AT_STATX_SYNC_AS_STAT tells statx() to behave as stat() does in this respect. (2) AT_STATX_FORCE_SYNC will require a network filesystem to synchronise its attributes with the server - which might require data writeback to occur to get the timestamps correct. (3) AT_STATX_DONT_SYNC will suppress synchronisation with the server in a network filesystem. The resulting values should be considered approximate. mask is a bitmask indicating the fields in struct statx that are of interest to the caller. The user should set this to STATX_BASIC_STATS to get the basic set returned by stat(). It should be noted that asking for more information may entail extra I/O operations. buffer points to the destination for the data. This must be 256 bytes in size. ====================== MAIN ATTRIBUTES RECORD ====================== The following structures are defined in which to return the main attribute set: struct statx_timestamp { __s64 tv_sec; __s32 tv_nsec; __s32 __reserved; }; struct statx { __u32 stx_mask; __u32 stx_blksize; __u64 stx_attributes; __u32 stx_nlink; __u32 stx_uid; __u32 stx_gid; __u16 stx_mode; __u16 __spare0[1]; __u64 stx_ino; __u64 stx_size; __u64 stx_blocks; __u64 __spare1[1]; struct statx_timestamp stx_atime; struct statx_timestamp stx_btime; struct statx_timestamp stx_ctime; struct statx_timestamp stx_mtime; __u32 stx_rdev_major; __u32 stx_rdev_minor; __u32 stx_dev_major; __u32 stx_dev_minor; __u64 __spare2[14]; }; The defined bits in request_mask and stx_mask are: STATX_TYPE Want/got stx_mode & S_IFMT STATX_MODE Want/got stx_mode & ~S_IFMT STATX_NLINK Want/got stx_nlink STATX_UID Want/got stx_uid STATX_GID Want/got stx_gid STATX_ATIME Want/got stx_atime{,_ns} STATX_MTIME Want/got stx_mtime{,_ns} STATX_CTIME Want/got stx_ctime{,_ns} STATX_INO Want/got stx_ino STATX_SIZE Want/got stx_size STATX_BLOCKS Want/got stx_blocks STATX_BASIC_STATS [The stuff in the normal stat struct] STATX_BTIME Want/got stx_btime{,_ns} STATX_ALL [All currently available stuff] stx_btime is the file creation time, stx_mask is a bitmask indicating the data provided and __spares*[] are where as-yet undefined fields can be placed. Time fields are structures with separate seconds and nanoseconds fields plus a reserved field in case we want to add even finer resolution. Note that times will be negative if before 1970; in such a case, the nanosecond fields will also be negative if not zero. The bits defined in the stx_attributes field convey information about a file, how it is accessed, where it is and what it does. The following attributes map to FS_*_FL flags and are the same numerical value: STATX_ATTR_COMPRESSED File is compressed by the fs STATX_ATTR_IMMUTABLE File is marked immutable STATX_ATTR_APPEND File is append-only STATX_ATTR_NODUMP File is not to be dumped STATX_ATTR_ENCRYPTED File requires key to decrypt in fs Within the kernel, the supported flags are listed by: KSTAT_ATTR_FS_IOC_FLAGS [Are any other IOC flags of sufficient general interest to be exposed through this interface?] New flags include: STATX_ATTR_AUTOMOUNT Object is an automount trigger These are for the use of GUI tools that might want to mark files specially, depending on what they are. Fields in struct statx come in a number of classes: (0) stx_dev_*, stx_blksize. These are local system information and are always available. (1) stx_mode, stx_nlinks, stx_uid, stx_gid, stx_[amc]time, stx_ino, stx_size, stx_blocks. These will be returned whether the caller asks for them or not. The corresponding bits in stx_mask will be set to indicate whether they actually have valid values. If the caller didn't ask for them, then they may be approximated. For example, NFS won't waste any time updating them from the server, unless as a byproduct of updating something requested. If the values don't actually exist for the underlying object (such as UID or GID on a DOS file), then the bit won't be set in the stx_mask, even if the caller asked for the value. In such a case, the returned value will be a fabrication. Note that there are instances where the type might not be valid, for instance Windows reparse points. (2) stx_rdev_*. This will be set only if stx_mode indicates we're looking at a blockdev or a chardev, otherwise will be 0. (3) stx_btime. Similar to (1), except this will be set to 0 if it doesn't exist. ======= TESTING ======= The following test program can be used to test the statx system call: samples/statx/test-statx.c Just compile and run, passing it paths to the files you want to examine. The file is built automatically if CONFIG_SAMPLES is enabled. Here's some example output. Firstly, an NFS directory that crosses to another FSID. Note that the AUTOMOUNT attribute is set because transiting this directory will cause d_automount to be invoked by the VFS. [root@andromeda ~]# /tmp/test-statx -A /warthog/data statx(/warthog/data) = 0 results=7ff Size: 4096 Blocks: 8 IO Block: 1048576 directory Device: 00:26 Inode: 1703937 Links: 125 Access: (3777/drwxrwxrwx) Uid: 0 Gid: 4041 Access: 2016-11-24 09:02:12.219699527+0000 Modify: 2016-11-17 10:44:36.225653653+0000 Change: 2016-11-17 10:44:36.225653653+0000 Attributes: 0000000000001000 (-------- -------- -------- -------- -------- -------- ---m---- --------) Secondly, the result of automounting on that directory. [root@andromeda ~]# /tmp/test-statx /warthog/data statx(/warthog/data) = 0 results=7ff Size: 4096 Blocks: 8 IO Block: 1048576 directory Device: 00:27 Inode: 2 Links: 125 Access: (3777/drwxrwxrwx) Uid: 0 Gid: 4041 Access: 2016-11-24 09:02:12.219699527+0000 Modify: 2016-11-17 10:44:36.225653653+0000 Change: 2016-11-17 10:44:36.225653653+0000 Signed-off-by: David Howells <dhowells@redhat.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* | sched/headers: Prepare for new header dependencies before moving code to ↵Ingo Molnar2017-03-021-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | <linux/sched/task_stack.h> We are going to split <linux/sched/task_stack.h> out of <linux/sched.h>, which will have to be picked up from other headers and a couple of .c files. Create a trivial placeholder <linux/sched/task_stack.h> file that just maps to <linux/sched.h> to make this patch obviously correct and bisectable. Include the new header in the files that are going to need it. Acked-by: Linus Torvalds <torvalds@linux-foundation.org> Cc: Mike Galbraith <efault@gmx.de> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: linux-kernel@vger.kernel.org Signed-off-by: Ingo Molnar <mingo@kernel.org>
* | sched/headers: Prepare to move signal wakeup & sigpending methods from ↵Ingo Molnar2017-03-021-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | <linux/sched.h> into <linux/sched/signal.h> Fix up affected files that include this signal functionality via sched.h. Acked-by: Linus Torvalds <torvalds@linux-foundation.org> Cc: Mike Galbraith <efault@gmx.de> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: linux-kernel@vger.kernel.org Signed-off-by: Ingo Molnar <mingo@kernel.org>
* | sched/headers: Prepare for new header dependencies before moving code to ↵Ingo Molnar2017-03-021-0/+1
|/ | | | | | | | | | | | | | | | | | <linux/sched/nmi.h> We are going to move softlockup APIs out of <linux/sched.h>, which will have to be picked up from other headers and a couple of .c files. <linux/nmi.h> already includes <linux/sched.h>. Include the <linux/nmi.h> header in the files that are going to need it. Acked-by: Linus Torvalds <torvalds@linux-foundation.org> Cc: Mike Galbraith <efault@gmx.de> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: linux-kernel@vger.kernel.org Signed-off-by: Ingo Molnar <mingo@kernel.org>
* Merge branch 'for-linus' of git://git.armlinux.org.uk/~rmk/linux-armLinus Torvalds2017-02-281-12/+12
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Pull ARM updates from Russell King: - nommu updates from Afzal Mohammed cleaning up the vectors support - allow DMA memory "mapping" for nommu Benjamin Gaignard - fixing a correctness issue with R_ARM_PREL31 relocations in the module linker - add strlen() prototype for the decompressor - support for DEBUG_VIRTUAL from Florian Fainelli - adjusting memory bounds after memory reservations have been registered - unipher cache handling updates from Masahiro Yamada - initrd and Thumb Kconfig cleanups * 'for-linus' of git://git.armlinux.org.uk/~rmk/linux-arm: (23 commits) ARM: mm: round the initrd reservation to page boundaries ARM: mm: clean up initrd initialisation ARM: mm: move initrd init code out of arm_memblock_init() ARM: 8655/1: improve NOMMU definition of pgprot_*() ARM: 8654/1: decompressor: add strlen prototype ARM: 8652/1: cache-uniphier: clean up active way setup code ARM: 8651/1: cache-uniphier: include <linux/errno.h> instead of <linux/types.h> ARM: 8650/1: module: handle negative R_ARM_PREL31 addends correctly ARM: 8649/2: nommu: remove Hivecs configuration is asm ARM: 8648/2: nommu: display vectors base ARM: 8647/2: nommu: dynamic exception base address setting ARM: 8646/1: mmu: decouple VECTORS_BASE from Kconfig ARM: 8644/1: Reduce "CPU: shutdown" message to debug level ARM: 8641/1: treewide: Replace uses of virt_to_phys with __pa_symbol ARM: 8640/1: Add support for CONFIG_DEBUG_VIRTUAL ARM: 8639/1: Define KERNEL_START and KERNEL_END ARM: 8638/1: mtd: lart: Rename partition defines to be prefixed with PART_ ARM: 8637/1: Adjust memory boundaries after reservations ARM: 8636/1: Cleanup sanity_check_meminfo ARM: add CPU_THUMB_CAPABLE to indicate possible Thumb support ...
| * ARM: 8638/1: mtd: lart: Rename partition defines to be prefixed with PART_Florian Fainelli2017-02-281-12/+12
| | | | | | | | | | | | | | | | | | | | In preparation for defining KERNEL_START on ARM, rename KERNEL_START to PART_KERNEL_START, and to be consistent, do this for all partition-related constants. Acked-by: Boris Brezillon <boris.brezillon@free-electrons.com> Signed-off-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* | Merge tag 'for-4.11/linus-merge-signed' of git://git.kernel.dk/linux-blockLinus Torvalds2017-02-212-15/+13
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Pull block layer updates from Jens Axboe: - blk-mq scheduling framework from me and Omar, with a port of the deadline scheduler for this framework. A port of BFQ from Paolo is in the works, and should be ready for 4.12. - Various fixups and improvements to the above scheduling framework from Omar, Paolo, Bart, me, others. - Cleanup of the exported sysfs blk-mq data into debugfs, from Omar. This allows us to export more information that helps debug hangs or performance issues, without cluttering or abusing the sysfs API. - Fixes for the sbitmap code, the scalable bitmap code that was migrated from blk-mq, from Omar. - Removal of the BLOCK_PC support in struct request, and refactoring of carrying SCSI payloads in the block layer. This cleans up the code nicely, and enables us to kill the SCSI specific parts of struct request, shrinking it down nicely. From Christoph mainly, with help from Hannes. - Support for ranged discard requests and discard merging, also from Christoph. - Support for OPAL in the block layer, and for NVMe as well. Mainly from Scott Bauer, with fixes/updates from various others folks. - Error code fixup for gdrom from Christophe. - cciss pci irq allocation cleanup from Christoph. - Making the cdrom device operations read only, from Kees Cook. - Fixes for duplicate bdi registrations and bdi/queue life time problems from Jan and Dan. - Set of fixes and updates for lightnvm, from Matias and Javier. - A few fixes for nbd from Josef, using idr to name devices and a workqueue deadlock fix on receive. Also marks Josef as the current maintainer of nbd. - Fix from Josef, overwriting queue settings when the number of hardware queues is updated for a blk-mq device. - NVMe fix from Keith, ensuring that we don't repeatedly mark and IO aborted, if we didn't end up aborting it. - SG gap merging fix from Ming Lei for block. - Loop fix also from Ming, fixing a race and crash between setting loop status and IO. - Two block race fixes from Tahsin, fixing request list iteration and fixing a race between device registration and udev device add notifiations. - Double free fix from cgroup writeback, from Tejun. - Another double free fix in blkcg, from Hou Tao. - Partition overflow fix for EFI from Alden Tondettar. * tag 'for-4.11/linus-merge-signed' of git://git.kernel.dk/linux-block: (156 commits) nvme: Check for Security send/recv support before issuing commands. block/sed-opal: allocate struct opal_dev dynamically block/sed-opal: tone down not supported warnings block: don't defer flushes on blk-mq + scheduling blk-mq-sched: ask scheduler for work, if we failed dispatching leftovers blk-mq: don't special case flush inserts for blk-mq-sched blk-mq-sched: don't add flushes to the head of requeue queue blk-mq: have blk_mq_dispatch_rq_list() return if we queued IO or not block: do not allow updates through sysfs until registration completes lightnvm: set default lun range when no luns are specified lightnvm: fix off-by-one error on target initialization Maintainers: Modify SED list from nvme to block Move stack parameters for sed_ioctl to prevent oversized stack with CONFIG_KASAN uapi: sed-opal fix IOW for activate lsp to use correct struct cdrom: Make device operations read-only elevator: fix loading wrong elevator type for blk-mq devices cciss: switch to pci_irq_alloc_vectors block/loop: fix race between I/O and set_status blk-mq-sched: don't hold queue_lock when calling exit_icq block: set make_request_fn manually in blk_mq_update_nr_hw_queues ...
| * | block: fold cmd_type into the REQ_OP_ spaceChristoph Hellwig2017-01-312-15/+13
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Instead of keeping two levels of indirection for requests types, fold it all into the operations. The little caveat here is that previously cmd_type only applied to struct request, while the request and bio op fields were set to plain REQ_OP_READ/WRITE even for passthrough operations. Instead this patch adds new REQ_OP_* for SCSI passthrough and driver private requests, althought it has to add two for each so that we can communicate the data in/out nature of the request. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jens Axboe <axboe@fb.com>
* | | mtd: aspeed: remove redundant dev_err call in aspeed_smc_probe()Wei Yongjun2017-02-101-6/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | There is a error message within devm_ioremap_resource already, so remove the dev_err call to avoid redundant error message. Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com> Reviewed-by: Marek Vasut <marek.vasut@gmail.com> Signed-off-by: Brian Norris <computersforpeace@gmail.com>
* | | Merge tag 'spi-nor/for-4.11-v2' of git://github.com/spi-nor/linuxBrian Norris2017-02-1012-90/+1934
|\ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | From Cyrille: """ This pull request contains the following notable changes: - add support to the 4-byte address instruction set. - add support to new memory parts. - add support to S3AN memories. - add support to the Intel SPI controller. - add support to the Aspeed AST2400 and AST2550 controllers. - fix max SPI transfer and message sizes in m25p80_read(). - fix the Candence QSPI driver. - fix the Freescale QSPI driver. """
| * | | mtd: spi-nor: cqspi: remove redundant dead code on error return checkColin Ian King2017-02-101-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Checking for ret < 0 is redundant because a previous check on ret being non-zero already handles the ret < 0 case. Remove the redundant code. Found by CoverityScan, CID#1398863, CID#1398864 Signed-off-by: Colin Ian King <colin.king@canonical.com> Reviewed-by: Richard Weinberger <richard@nod.at> Acked-by: Marek Vasut <marek.vasut@gmail.com> Signed-off-by: Cyrille Pitchen <cyrille.pitchen@atmel.com>
| * | | mtd: fsl-quadspi: Rename SEQID_QUAD_READ to SEQID_READYunhui Cui2017-02-101-4/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | There are some read modes for flash, such as NORMAL, FAST, QUAD, DDR QUAD. These modes will use the identical lut table base So rename SEQID_QUAD_READ to SEQID_READ. Signed-off-by: Yunhui Cui <B56489@freescale.com> Signed-off-by: Yunhui Cui <yunhui.cui@nxp.com> Acked-by: Han xu <han.xu@nxp.com> Signed-off-by: Cyrille Pitchen <cyrille.pitchen@atmel.com>
| * | | mtd:fsl-quadspi:use the property fields of SPI-NORYunhui Cui2017-02-101-28/+12
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | We can get the read/write/erase opcode from the spi nor framework directly. This patch uses the information stored in the SPI-NOR to remove the hardcode in the fsl_qspi_init_lut(). Signed-off-by: Yunhui Cui <B56489@freescale.com> Signed-off-by: Yunhui Cui <yunhui.cui@nxp.com> Acked-by: Han xu <han.xu@nxp.com> Signed-off-by: Cyrille Pitchen <cyrille.pitchen@atmel.com>
| * | | mtd: spi-nor: Add support for gd25q16Kamal Dasu2017-02-101-0/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add GigaDevice GD25Q16 (16M-bit) to supported list. Signed-off-by: Kamal Dasu <kdasu.kdev@gmail.com> Acked-by: Marek Vasut <marek.vasut@gmail.com> Signed-off-by: Cyrille Pitchen <cyrille.pitchen@atmel.com>
| * | | mtd: spi-nor: Fix S3AN addressing calculationRicardo Ribalda2017-02-101-3/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The page calculation under spi_nor_s3an_addr_convert() was wrong. On Default Address Mode we need to perform a divide by page_size. Signed-off-by: Ricardo Ribalda Delgado <ricardo.ribalda@gmail.com> Acked-by: Marek Vasut <marek.vasut@gmail.com> Signed-off-by: Cyrille Pitchen <cyrille.pitchen@atmel.com>
| * | | mtd: aspeed: fix compile warning in aspeed_smc_read_from_ahb()Cédric Le Goater2017-02-101-2/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The first argument of ioread32_rep() and ioread8_rep is not const. Change aspeed_smc_read_from_ahb() prototype to fix compile warning : drivers/mtd/spi-nor/aspeed-smc.c: In function 'aspeed_smc_read_from_ahb': drivers/mtd/spi-nor/aspeed-smc.c:212:16: warning: passing argument 1 of 'ioread32_rep' discards 'const' qualifier from pointer target type [-Wdiscarded-qualifiers] ioread32_rep(src, buf, len >> 2); Signed-off-by: Cédric Le Goater <clg@kaod.org> Reviewed-by: Marek Vasut <marek.vasut@gmail.com> Signed-off-by: Cyrille Pitchen <cyrille.pitchen@atmel.com>
| * | | mtd: spi-nor: add dt support for Everspin MRAMsUwe Kleine-König2017-02-101-1/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The MR25 family doesn't support JEDEC, so they need explicit mentioning in the list of supported spi IDs. This makes it possible to add these using for example: compatible = "everspin,mr25h40"; There was already an entry for mr25h256. Move that one out of the "keep for compatibility" section and put in a new group for Everspin MRAMs. Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Acked-by: Rob Herring <robh@kernel.org> Signed-off-by: Cyrille Pitchen <cyrille.pitchen@atmel.com>
| * | | Merge tag 'ib-mfd-mtd-v4.11' of ↵Cyrille Pitchen2017-02-105-0/+880
| |\ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd From Lee Jones: """ Immutable branch between MFD and MTD due for the v4.11 merge window """
| | * | | spi-nor: Add support for Intel SPI serial flash controllerMika Westerberg2017-01-035-0/+880
| | | |/ | | |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add support for the SPI serial flash host controller found on many Intel CPUs including Baytrail and Braswell. The SPI serial flash controller is used to access BIOS and other platform specific information. By default the driver exposes a single read-only MTD device but with a module parameter "writeable=1" the MTD device can be made read-write which makes it possible to upgrade BIOS directly from Linux. Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com> Acked-by: Cyrille Pitchen <cyrille.pitchen@atmel.com> Signed-off-by: Lee Jones <lee.jones@linaro.org>
| * | | mtd: spi-nor: Add lock/unlock support for f25l32paVictor Shyba2017-02-101-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This chip has write protection enabled on power-up, so this flag is necessary to support write operations. Signed-off-by: Victor Shyba <victor1984@riseup.net> Acked-by: Marek Vasut <marek.vasut@gmail.com> Signed-off-by: Cyrille Pitchen <cyrille.pitchen@atmel.com>
| * | | mtd: spi-nor: add a stateless method to support memory size above 128MibCyrille Pitchen2017-02-101-21/+80
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch provides an alternative mean to support memory above 16MiB (128Mib) by replacing 3byte address op codes by their associated 4byte address versions. Using the dedicated 4byte address op codes doesn't change the internal state of the SPI NOR memory as opposed to using other means such as updating a Base Address Register (BAR) and sending command to enter/leave the 4byte mode. Hence when a CPU reset occurs, early bootloaders don't need to be aware of BAR value or 4byte mode being enabled: they can still access the first 16MiB of the SPI NOR memory using the regular 3byte address op codes. Signed-off-by: Cyrille Pitchen <cyrille.pitchen@atmel.com> Tested-by: Vignesh R <vigneshr@ti.com> Acked-by: Marek Vasut <marek.vasut@gmail.com>
| * | | mtd: spi-nor: rename SPINOR_OP_* macros of the 4-byte address op codesCyrille Pitchen2017-02-103-25/+18
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch renames the SPINOR_OP_* macros of the 4-byte address instruction set so the new names all share a common pattern: the 4-byte address name is built from the 3-byte address name appending the "_4B" suffix. The patch also introduces new op codes to support other SPI protocols such as SPI 1-4-4 and SPI 1-2-2. This is a transitional patch and will help a later patch of spi-nor.c to automate the translation from the 3-byte address op codes into their 4-byte address version. Signed-off-by: Cyrille Pitchen <cyrille.pitchen@atmel.com> Acked-by: Mark Brown <broonie@kernel.org> Acked-by: Marek Vasut <marek.vasut@gmail.com>
| * | | mtd: m25p80: consider max message size in m25p80_readHeiner Kallweit2017-02-101-1/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Consider a message size limit when calculating the maximum amount of data that can be read. The message size limit has been introduced with 4.9, so cc it to stable. Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com> Signed-off-by: Cyrille Pitchen <cyrille.pitchen@atmel.com>
| * | | mtd: aspeed: add memory controllers for the Aspeed AST2400 SoCCédric Le Goater2017-02-102-1/+34
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This driver adds mtd support for the Aspeed AST2400 SoC static memory controllers: * New Static Memory Controller (referred as FMC) . BMC firmware . AST2500 compatible register set . 5 chip select pins (CE0 ∼ CE4) . supports NOR flash, NAND flash and SPI flash memory. * SPI Flash Controller (SPI) . host Firmware . slightly different register set, between AST2500 and the legacy controller . supports SPI flash memory . 1 chip select pin (CE0) The legacy static memory controller (referred as SMC) is not supported, as well as types other than SPI. Signed-off-by: Cédric Le Goater <clg@kaod.org> Reviewed-by: Joel Stanley <joel@jms.id.au> Signed-off-by: Cyrille Pitchen <cyrille.pitchen@atmel.com>
| * | | mtd: spi-nor: add memory controllers for the Aspeed AST2500 SoCCédric Le Goater2017-02-103-0/+737
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This driver adds mtd support for the Aspeed AST2500 SoC static memory controllers : * Firmware SPI Memory Controller (FMC) . BMC firmware . 3 chip select pins (CE0 ~ CE2) . supports SPI type flash memory (CE0-CE1) . CE2 can be of NOR type flash but this is not supported by the driver * SPI Flash Controller (SPI1 and SPI2) . host firmware . 2 chip select pins (CE0 ~ CE1) . supports SPI type flash memory Each controller has a memory range on which it maps its flash module slaves. Each slave is assigned a memory window for its mapping that can be changed at bootime with the Segment Address Register. Each SPI flash slave can then be accessed in two modes: Command and User. When in User mode, accesses to the memory segment of the slaves are translated in SPI transfers. When in Command mode, the HW generates the SPI commands automatically and the memory segment is accessed as if doing a MMIO. Currently, only the User mode is supported. Command mode needs a little more work to check that the memory window on the AHB bus fits the module size. Based on previous work from Milton D. Miller II <miltonm@us.ibm.com> Signed-off-by: Cédric Le Goater <clg@kaod.org> Reviewed-by: Joel Stanley <joel@jms.id.au> Reviewed-by: Marek Vasut <marek.vasut@gmail.com> Signed-off-by: Cyrille Pitchen <cyrille.pitchen@atmel.com>
| * | | mtd: spi-nor: remove WARN_ONCE() message in spi_nor_write()Cyrille Pitchen2017-02-101-3/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch removes the WARN_ONCE() test in spi_nor_write(). This macro triggers the display of a warning message almost every time we use a UBI file-system because a write operation is performed at offset 64, which is in the middle of the SPI NOR memory page. This is a valid operation for ubifs. Hence this warning is pretty annoying and useless so we just remove it. Signed-off-by: Cyrille Pitchen <cyrille.pitchen@atmel.com> Suggested-by: Richard Weinberger <richard@nod.at> Suggested-by: Andras Szemzo <szemzo.andras@gmail.com> Acked-by: Boris Brezillon <boris.brezillon@free-electrons.com>
| * | | mtd: spi-nor: improve macronix_quad_enable()Cyrille Pitchen2017-02-101-0/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The patch checks whether the Quad Enable bit is already set in the Status Register. If so, the function exits immediately with a successful return code. Signed-off-by: Cyrille Pitchen <cyrille.pitchen@atmel.com> Reviewed-by: Jagan Teki <jagan@openedev.com> Acked-by: Marek Vasut <marek.vasut@gmail.com>
| * | | mtd: spi-nor: Add support for S3AN spi-nor devicesRicardo Ribalda2017-02-101-5/+149
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Xilinx Spartan-3AN FPGAs contain an In-System Flash where they keep their configuration data and (optionally) some user data. The protocol of this flash follows most of the spi-nor standard. With the following differences: - Page size might not be a power of two. - The address calculation (default addressing mode). - The spi nor commands used. Protocol is described on Xilinx User Guide UG333 Signed-off-by: Ricardo Ribalda Delgado <ricardo.ribalda@gmail.com> Cc: Boris Brezillon <boris.brezillon@free-electrons.com> Cc: Brian Norris <computersforpeace@gmail.com> Cc: Marek Vasut <marek.vasut@gmail.com> Reviewed-by: Marek Vasut <marek.vasut@gmail.com> Signed-off-by: Cyrille Pitchen <cyrille.pitchen@atmel.com>
| * | | mtd: spi-nor: cqspi: Fix build on arches missing readsl/writeslMarek Vasut2017-01-042-3/+5
| |/ / | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The x86-64 and some other architectures are missing readsl/writesl functions, so this driver won't build on them. Use a more portable ioread32_rep()/iowrite32_rep() instead. Signed-off-by: Marek Vasut <marex@denx.de> Cc: Alan Tull <atull@opensource.altera.com> Cc: Brian Norris <computersforpeace@gmail.com> Cc: David Woodhouse <dwmw2@infradead.org> Cc: Dinh Nguyen <dinguyen@opensource.altera.com> Cc: Graham Moore <grmoore@opensource.altera.com> Cc: Vignesh R <vigneshr@ti.com> Cc: Yves Vandervennet <yvanderv@opensource.altera.com> Suggested-by: Stefan Roese <sr@denx.de> Signed-off-by: Cyrille Pitchen <cyrille.pitchen@atmel.com>
* | | mtd: physmap_of: fixup gemini/versatile dependenciesBrian Norris2017-02-103-4/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | physmap_of sort of depends on the gemini and versatile modules (when they're enabled), but this isn't expressed in Kconfig. Let's just merge the modules all together, when enabled. Then we can avoid exporting a few symbols, and the versatile and gemini code can now be modular again (the below commit accidentally made them built-in only). Resolves errors like this: ERROR: "of_flash_probe_versatile" [drivers/mtd/maps/physmap_of.ko] undefined! ERROR: "of_flash_probe_gemini" [drivers/mtd/maps/physmap_of.ko] undefined! Fixes: 56ff337ea433 ("mtd: physmap_of: add a hook for Gemini flash probing") Cc: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Brian Norris <computersforpeace@gmail.com> Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
* | | mtd: Add partition device node to mtd partition devicesSascha Hauer2017-02-092-0/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | The user visible change here is that mtd partitions get an of_node link in sysfs. Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Signed-off-by: Brian Norris <computersforpeace@gmail.com>
* | | mtd: bcm47xxpart: support layouts with multiple TRX partitionsRafał Miłecki2017-02-091-10/+46
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Some devices may have an extra TRX partition used as failsafe one. If we detect such partition we should set a proper name for it and don't parse it. Signed-off-by: Rafał Miłecki <rafal@milecki.pl> Acked-by: Marek Vasut <marek.vasut@gmail.com> Signed-off-by: Brian Norris <computersforpeace@gmail.com>
* | | mtd: bcm47xxpart: move TRX parsing code to separated functionRafał Miłecki2017-02-091-47/+74
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This change simplifies main parsing loop logic a bit. In future it may be useful for moving TRX support to separated module / parser (if we implement support for them at some point). Finally parsing TRX at the end puts us in a better position as we have better flash layout knowledge. It may be useful e.g. if it appears there is more than 1 TRX partition. Signed-off-by: Rafał Miłecki <rafal@milecki.pl> Acked-by: Marek Vasut <marek.vasut@gmail.com> Signed-off-by: Brian Norris <computersforpeace@gmail.com>
* | | mtd: bcm47xxsflash: support reading flash out of mapping windowRafał Miłecki2017-02-082-3/+24
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | For reading flash content we use MMIO but it's possible to read only first 16 MiB this way. It's simply an arch design/limitation. To support flash sizes bigger than 16 MiB implement indirect access using ChipCommon registers. This has been tested using MX25L25635F. Signed-off-by: Rafał Miłecki <rafal@milecki.pl> Acked-by: Marek Vasut <marek.vasut@gmail.com> Signed-off-by: Brian Norris <computersforpeace@gmail.com>
* | | Merge tag 'nand/for-4.11' of github.com:linux-nand/linuxBrian Norris2017-02-087-40/+170
|\ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | From Boris: """ This pull request contains minor fixes/improvements on existing drivers: - sunxi: avoid busy-waiting for NAND events - ifc: fix ECC handling on IFC v1.0 - OX820: add explicit dependency on ARCH_OXNAS in Kconfig - core: add a new manufacture ID and fix a kernel-doc warning - fsmc: kill pdata support - lpc32xx_slc: remove unneeded NULL check """ Conflicts: include/linux/mtd/nand.h [Brian: trivial conflict in the comment section]
| * | | mtd: nand: Add Winbond manufacturer idAndrey Jr. Melnikov2017-02-061-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Add WINBOND manufacturer id. Signed-off-by: Andrey Jr. Melnikov <temnota.am@gmail.com> Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
| * | | mtd: nand: sunxi: Improve sunxi_nfc_cmd_ctrl()Boris Brezillon2017-02-061-4/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | We only need to call sunxi_nfc_wait_cmd_fifo_empty() if we want to send a new command. Move the sunxi_nfc_wait_cmd_fifo_empty() call to right place to avoid extra register reads. Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
| * | | mtd: nand: sunxi: Stop using polling mode when waiting for long operationsBoris Brezillon2017-02-061-6/+18
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Some operations, like read/write an entire page of data with the ECC engine enabled, are known to take a lot of time. Use the interrupt-based waiting mode in these situation. Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
| * | | mtd: nand: sunxi: Fix the non-polling case in sunxi_nfc_wait_events()Boris Brezillon2017-02-061-0/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | wait_for_completion_timeout() returns 0 if a timeout occurred, 1 otherwise. Fix the sunxi_nfc_wait_events() accordingly. Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
| * | | mtd: nand: ifc: Fix location of eccstat registers for IFC V1.0Mark Marshall2017-02-061-1/+7
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The commit 7a654172161c ("mtd/ifc: Add support for IFC controller version 2.0") added support for version 2.0 of the IFC controller. The version 2.0 controller has the ECC status registers at a different location to the previous versions. Correct the fsl_ifc_nand structure so that the ECC status can be read from the correct location for both version 1.0 and 2.0 of the controller. Cc: stable@vger.kernel.org Fixes: 7a654172161c ("mtd/ifc: Add support for IFC controller version 2.0") Signed-off-by: Mark Marshall <mark.marshall@omicronenergy.com> Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
| * | | mtd: nand: mediatek: remove redundant dev_err call in mtk_nfc_probe()Wei Yongjun2017-01-301-1/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | There is a error message within devm_ioremap_resource already, so remove the dev_err call to avoid redundant error message. Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com> Acked-by: Marek Vasut <marek.vasut@gmail.com> Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
| * | | mtd: nand: Add OX820 NAND hardware dependencyJean Delvare2017-01-301-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The oxnas NAND driver is only needed for a specific platform, do not propose it on other platforms unless build-testing. Signed-off-by: Jean Delvare <jdelvare@suse.de> Fixes: 668592492409 ("mtd: nand: Add OX820 NAND Support") Cc: Rob Herring <robh@kernel.org> Cc: Neil Armstrong <narmstrong@baylibre.com> Cc: Boris Brezillon <boris.brezillon@free-electrons.com> Cc: Richard Weinberger <richard@nod.at> Cc: David Woodhouse <dwmw2@infradead.org> Cc: Brian Norris <computersforpeace@gmail.com> Cc: Marek Vasut <marek.vasut@gmail.com> Cc: Cyrille Pitchen <cyrille.pitchen@atmel.com> Acked-by: Marek Vasut <marek.vasut@gmail.com> Acked-by: Neil Armstrong <narmstrong@baylibre.com> Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
| * | | mtd: nand: fsmc: remove stale non-DT probe pathLinus Walleij2017-01-302-21/+133
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The FSMC driver has an execution path and a header file in <linux/mtd/fsmc.h> that serves to support passing in platform data through board files, albeit no upstream users of this mechanism exist. The header file also contains function headers for functions that do not exist in the kernel. Delete this and move the platform data struct, parsing and handling into the driver, assume we are using OF and make the driver depend on OF, remove the ifdefs making that optional. Cc: Viresh Kumar <viresh.kumar@linaro.org> Cc: Stefan Roese <sr@denx.de> Cc: Vipin Kumar <vipin.kumar@st.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Reviewed-by: Stefan Roese <sr@denx.de> Acked-by: Viresh Kumar <viresh.kumar@linaro.org> Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
| * | | mtd: nand: lpc32xx_slc: Remove unneeded NULL check on 'rc'Fabio Estevam2017-01-301-7/+2
| | |/ | |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | devm_ioremap_resource() does a NULL check on the 'rc' argument, so remove the unneeded manual NULL check. While at it, place the 'rc' assignment just before devm_ioremap_resource() to improve readability. Signed-off-by: Fabio Estevam <fabio.estevam@nxp.com> Acked-by: Marek Vasut <marek.vasut@gmail.com> Acked-by: Vladimir Zapolskiy <vz@mleia.com> Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
* | | mtd: Fix typo: "occured" -> "occurred"Nobuhiro Iwamatsu2017-02-082-3/+3
| | | | | | | | | | | | | | | | | | | | | Trivial typo fix in comment. Signed-off-by: Nobuhiro Iwamatsu <nobuhiro.iwamatsu.kw@hitachi.com> Signed-off-by: Brian Norris <computersforpeace@gmail.com>
* | | mtd: nand: set max_bb_per_die and blocks_per_die for ONFI compliant chipsZach Brown2017-02-081-0/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | ONFI compliant chips contain the values for the max_bb_per_die and blocks_per_die fields in the parameter page. When the ONFI paged is retrieved/parsed the chip's fields are set by the corresponding fields in the param page. Signed-off-by: Zach Brown <zach.brown@ni.com> Acked-by: Boris Brezillon <boris.brezillon@free-electron.com> Acked-by: Brian Norris <computersforpeace@gmail.com> Signed-off-by: Brian Norris <computersforpeace@gmail.com>
* | | mtd: nand: implement 'max_bad_blocks' mtd functionZach Brown2017-02-081-0/+37
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Implement the new mtd function 'max_bad_blocks'. Using the chip's max_bb_per_die and blocks_per_die fields to determine the maximum bad blocks to reserve for an MTD. Signed-off-by: Jeff Westfahl <jeff.westfahl@ni.com> Signed-off-by: Zach Brown <zach.brown@ni.com> Acked-by: Boris Brezillon <boris.brezillon@free-electron.com> Acked-by: Brian Norris <computersforpeace@gmail.com> Signed-off-by: Brian Norris <computersforpeace@gmail.com>
* | | mtd: ichxrom: maybe-uninitialized with gcc-4.9Arnd Bergmann2017-02-081-2/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | pci_read_config_word() might fail and not initialize its output, as pointed out by older versions of gcc when using the -Wmaybe-unintialized flag: drivers/mtd/maps/ichxrom.c: In function ‘ichxrom_cleanup’: drivers/mtd/maps/ichxrom.c:63:2: error: ‘word’ is used uninitialized in this function [-Werror=uninitialized] This is apparently a correct warning, though it does not show up with newer compilers. Changing the code to not attempt to write back uninitialized data into PCI config space is a correct fix for the problem and avoids the warning. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Reviewed-by: Marek Vasut <marex@denx.de> Signed-off-by: Brian Norris <computersforpeace@gmail.com>
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