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* cfq-iosched: kill two unused cfqq flagsJens Axboe2009-04-071-14/+1
| | | | | | | We only manipulate the must_dispatch and queue_new flags, they are not tested anymore. So get rid of them. Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
* cfq-iosched: change dispatch logic to deal with single requests at the timeJens Axboe2009-04-071-76/+90
| | | | | | | | | | | | | | | | The IO scheduler core calls into the IO scheduler dispatch_request hook to move requests from the IO scheduler and into the driver dispatch list. It only does so when the dispatch list is empty. CFQ moves several requests to the dispatch list, which can cause higher latencies if we suddenly have to switch to some important sync IO. Change the logic to move one request at the time instead. This should almost be functionally equivalent to what we did before, except that we now honor 'quantum' as the maximum queue depth at the device side from any single cfqq. If there's just a single active cfqq, we allow up to 4 times the normal quantum. Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
* mflash: initial supportunsik Kim2009-04-076-0/+1315
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This driver supports mflash IO mode for linux. Mflash is embedded flash drive and mainly targeted mobile and consumer electronic devices. Internally, mflash has nand flash and other hardware logics and supports 2 different operation (ATA, IO) modes. ATA mode doesn't need any new driver and currently works well under standard IDE subsystem. Actually it's one chip SSD. IO mode is ATA-like custom mode for the host that doesn't have IDE interface. Followings are brief descriptions about IO mode. A. IO mode based on ATA protocol and uses some custom command. (read confirm, write confirm) B. IO mode uses SRAM bus interface. C. IO mode supports 4kB boot area, so host can boot from mflash. This driver is quitely similar to a standard ATA driver, but because of following reasons it is currently seperated with ATA layer. 1. ATA layer deals standard ATA protocol. ATA layer have many low- level device specific interface, but data transfer keeps ATA rule. But, mflash IO mode doesn't. 2. Even though currently not used in mflash driver code, mflash has some custom command and modes. (nand fusing, firmware patch, etc) If this feature supported in linux kernel, ATA layer more altered. 3. Currently PATA platform device driver doesn't support interrupt. (I'm not sure) But, mflash uses interrupt (polling mode is just for debug). 4. mflash is somewhat under-develop product. Even though some company already using mflash their own product, I think more time is needed for standardization of custom command and mode. That time (maybe October) I will talk to with ATA people. If they accept integration, I will integrate. Signed-off-by: unsik Kim <donari75@gmail.com> Cc: Alan Cox <alan@lxorguk.ukuu.org.uk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
* cciss: change to discover first memory BARMike Miller2009-04-071-5/+14
| | | | | | | | | | | Add a method for discovering the first memory BAR. All Smart Array controllers to date have always had the the memory BAR as the first BAR. A new controller to be released later this year breaks that model. Signed-off-by: Mike Miller <mike.miller@hp.com> Cc: James Bottomley <James.Bottomley@HansenPartnership.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
* cciss: kernel scan thread for MSA2012Mike Miller2009-04-073-2/+111
| | | | | | | | | | | | | | | The MSA2012 cannot inform the driver of configuration changes since all management is out of band. This is a departure from any storage we have supported in the past. We need some way to detect changes on the topology so we implement this kernel thread. In some instances there's nothing we can do from the driver (like LUN failure) so just print out a message. In the case where logical volumes are added or deleted we call rebuild_lun_table to refresh the driver's view of the world. Signed-off-by: Mike Miller <mike.miller@hp.com> Cc: James Bottomley <James.Bottomley@HansenPartnership.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
* cciss: fix residual count for block pc requestsJens Axboe2009-04-071-1/+9
| | | | | | | We must complete the full request, so store the request count and then set the ->data_len to the residual count from the hardware. Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
* block: fix inconsistency in I/O stat accounting codeJerome Marchand2009-04-076-26/+33
| | | | | | | | | This forces in_flight to be zero when turning off or on the I/O stat accounting and stops updating I/O stats in attempt_merge() when accounting is turned off. Signed-off-by: Jerome Marchand <jmarchan@redhat.com> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
* block: elevator quiescing helpersJens Axboe2009-04-072-13/+31
| | | | | | | | | Simple helper functions to quiesce the request queue. These are currently only used for switching IO schedulers on-the-fly, but we can use them to properly switch IO accounting on and off as well. Signed-off-by: Jerome Marchand <jmarchan@redhat.com> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
* NFS: Fix a double free in nfs_parse_mount_options()Trond Myklebust2009-04-061-1/+1
| | | | | | | | | | Due to an apparent typo, commit a67d18f89f5782806135aad4ee012ff78d45aae7 (NFS: load the rpc/rdma transport module automatically) lead to the 'proto=' mount option doing a double free, while Opt_mountproto leaks a string. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* ext3: make default data ordering mode configurableLinus Torvalds2009-04-062-1/+26
| | | | | | | | | | | This makes the defautl ext3 data ordering mode (when no explicit ordering is set) configurable, so as to allow people to default to 'data=writeback' and get the resulting latency improvements. This is a non-issue if a filesystem has been explicitly set to some ordering (with 'tune2fs'). Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* Merge branch 'linux-next' of git://git.infradead.org/ubifs-2.6Linus Torvalds2009-04-0617-265/+482
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * 'linux-next' of git://git.infradead.org/ubifs-2.6: UBIFS: fix recovery bug UBIFS: add R/O compatibility UBIFS: fix compiler warnings UBIFS: fully sort GCed nodes UBIFS: fix commentaries UBIFS: introduce a helpful variable UBIFS: use KERN_CONT UBIFS: fix lprops committing bug UBIFS: fix bogus assertion UBIFS: fix bug where page is marked uptodate when out of space UBIFS: amend key_hash return value UBIFS: improve find function interface UBIFS: list usage cleanup UBIFS: fix dbg_chk_lpt_sz()
| * UBIFS: fix recovery bugAdrian Hunter2009-03-311-47/+23
| | | | | | | | | | | | | | | | | | | | | | UBIFS did not recovery in a situation in which it could have. The relevant function assumed there could not be more nodes in an eraseblock after a corrupted node, but in fact the last (NAND) page written might contain anything. The correct approach is to check for empty space (0xFF bytes) from then on. Signed-off-by: Adrian Hunter <adrian.hunter@nokia.com>
| * UBIFS: add R/O compatibilityArtem Bityutskiy2009-03-264-11/+72
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Now UBIFS is supported by u-boot. If we ever decide to change the media format, then people will have to upgrade their u-boots to mount new format images. However, very often it is possible to preserve R/O forward-compatibility, even though the write forward-compatibility is not preserved. This patch introduces a new super-block field which stores the R/O compatibility version. Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Acked-by: Adrian Hunter <Adrian.Hunter@nokia.com>
| * UBIFS: fix compiler warningsHunter Adrian2009-03-201-4/+4
| | | | | | | | | | | | | | | | | | | | | | | | fs/ubifs/super.c: In function ‘ubifs_show_options’: fs/ubifs/super.c:425: warning: format not a string literal and no format arguments fs/ubifs/super.c: In function ‘mount_ubifs’: fs/ubifs/super.c:1204: warning: format not a string literal and no format arguments fs/ubifs/super.c: In function ‘ubifs_remount_rw’: fs/ubifs/super.c:1557: warning: format not a string literal and no format arguments Signed-off-by: Adrian Hunter <adrian.hunter@nokia.com> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
| * UBIFS: fully sort GCed nodesArtem Bityutskiy2009-03-201-132/+296
| | | | | | | | | | | | | | | | | | | | The 'joinup()' function cannot deal with situations when nodes go in reverse order - it just leaves them in this order. This patch implement full nodes sorting using n*log(n) algorithm. It sorts data nodes for bulk-read, and direntry nodes for readdir(). Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
| * UBIFS: fix commentariesArtem Bityutskiy2009-03-208-9/+9
| | | | | | | | Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
| * UBIFS: introduce a helpful variableArtem Bityutskiy2009-03-164-21/+23
| | | | | | | | | | | | | | | | This patch introduces a helpful @c->idx_leb_size variable. The patch also fixes some spelling issues and makes comments use "LEB" instead of "eraseblock", which is more correct. Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
| * UBIFS: use KERN_CONTArtem Bityutskiy2009-03-162-6/+6
| | | | | | | | Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
| * UBIFS: fix lprops committing bugArtem Bityutskiy2009-03-161-4/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When writing lprop nodes, do not forget to set @from to 0 when switching the LEB. This fixes the following bug: UBIFS error (pid 27768): ubifs_leb_write: writing -15456 bytes at 16:15880, error -22 UBIFS error (pid 27768): do_commit: commit failed, error -22 UBIFS warning (pid 27768): ubifs_ro_mode: switched to read-only mode, error -22 Pid: 27768, comm: freespace Not tainted 2.6.29-rc4-ubifs-2.6 #43 Call Trace: [<ffffffffa00c46d6>] ubifs_ro_mode+0x54/0x56 [ubifs] [<ffffffffa00cfa16>] do_commit+0x4f5/0x50a [ubifs] [<ffffffffa00cfae7>] ubifs_run_commit+0xbc/0xdb [ubifs] [<ffffffffa00d42b9>] ubifs_budget_space+0x742/0x9ed [ubifs] [<ffffffff812daf45>] ? __mutex_lock_common+0x361/0x3ae [<ffffffffa00bc437>] ? ubifs_write_begin+0x18d/0x44c [ubifs] [<ffffffffa00bc5cb>] ubifs_write_begin+0x321/0x44c [ubifs] [<ffffffff8106222b>] ? trace_hardirqs_on_caller+0x1f/0x14d [<ffffffff81097ce2>] generic_file_buffered_write+0x12f/0x2d9 [<ffffffff8109828d>] __generic_file_aio_write_nolock+0x261/0x295 [<ffffffff81098aff>] generic_file_aio_write+0x69/0xc5 [<ffffffffa00bb914>] ubifs_aio_write+0x14c/0x19e [ubifs] [<ffffffff810c8f42>] do_sync_write+0xe7/0x12d [<ffffffff81055378>] ? autoremove_wake_function+0x0/0x38 [<ffffffff81149edc>] ? security_file_permission+0x11/0x13 [<ffffffff810c9827>] vfs_write+0xab/0x105 [<ffffffff810c9945>] sys_write+0x47/0x6f [<ffffffff8100c35b>] system_call_fastpath+0x16/0x1b Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
| * UBIFS: fix bogus assertionArtem Bityutskiy2009-03-151-4/+8
| | | | | | | | | | | | | | | | Empty journal head LEBs are accounted as taken empty as well, so the GC LEB does not have to be the only taken empty LEB when nounting/remounting. Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
| * UBIFS: fix bug where page is marked uptodate when out of spaceAdrian Hunter2009-03-141-2/+12
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | UBIFS fast path in write_begin may mark a page up to date and then discover that there may not be enough space to do the write, and so fall back to a slow path. The slow path tries harder, but may still find no space - leaving the page marked up to date, when it is not. This patch ensures that the page is marked not up to date in that case. The bug that this patch fixes becomes evident when the write is into a hole (sparse file) or is at the end of the file and a subsequent read is off the end of the file. In both cases, the file system should return zeros but was instead returning the page that had not been written because the file system was out of space. Signed-off-by: Adrian Hunter <ext-adrian.hunter@nokia.com> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
| * UBIFS: amend key_hash return valueArtem Bityutskiy2009-03-081-3/+3
| | | | | | | | | | | | ... which should be uint32_t, not int. Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
| * UBIFS: improve find function interfaceArtem Bityutskiy2009-03-083-10/+9
| | | | | | | | | | | | | | | | Make 'ubifs_find_free_space()' return offset where free space starts, rather than the amount of free space. This is just more appropriat for its caller. Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
| * UBIFS: list usage cleanupEric Sesterhenn2009-02-172-6/+3
| | | | | | | | | | | | | | | | | | Trivial cleanup, list_del(); list_add{,_tail}() is equivalent to list_move{,_tail}(). Semantic patch for coccinelle can be found at www.cccmz.de/~snakebyte/list_move_tail.spatch Signed-off-by: Eric Sesterhenn <snakebyte@gmx.de> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
| * UBIFS: fix dbg_chk_lpt_sz()Adrian Hunter2009-02-091-8/+13
| | | | | | | | | | | | | | | | The debugging function dbg_chk_lpt_sz() was not working correctly for small min_io_unit size e.g. NOR flash. Signed-off-by: Adrian Hunter <ext-adrian.hunter@nokia.com> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
* | Merge branch 'linux-next' of git://git.infradead.org/ubi-2.6Linus Torvalds2009-04-061-0/+11
|\ \ | | | | | | | | | | | | * 'linux-next' of git://git.infradead.org/ubi-2.6: UBI: add fsync capability
| * | UBI: add fsync capabilityCorentin Chary2009-02-201-0/+11
| | | | | | | | | | | | | | | | | | | | | Now, we can call fsync() on an UBI volume. Signed-off-by: Corentin Chary <corentincj@iksaif.net> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
* | | exit_notify: kill the wrong capable(CAP_KILL) checkOleg Nesterov2009-04-061-2/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The CAP_KILL check in exit_notify() looks just wrong, kill it. Whatever logic we have to reset ->exit_signal, the malicious user can bypass it if it execs the setuid application before exiting. Signed-off-by: Oleg Nesterov <oleg@redhat.com> Acked-by: Serge Hallyn <serue@us.ibm.com> Acked-by: Roland McGrath <roland@redhat.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | Merge git://git.infradead.org/mtd-2.6Linus Torvalds2009-04-0678-996/+4080
|\ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * git://git.infradead.org/mtd-2.6: (53 commits) [MTD] struct device - replace bus_id with dev_name(), dev_set_name() [MTD] [NOR] Fixup for Numonyx M29W128 chips [MTD] mtdpart: Make ecc_stats more realistic. powerpc/85xx: TQM8548: Update DTS file for multi-chip support powerpc: NAND: FSL UPM: document new bindings [MTD] [NAND] FSL-UPM: Add wait flags to support board/chip specific delays [MTD] [NAND] FSL-UPM: add multi chip support [MTD] [NOR] Add device parent info to physmap_of [MTD] [NAND] Add support for NAND on the Socrates board [MTD] [NAND] Add support for 4KiB pages. [MTD] sysfs support should not depend on CONFIG_PROC_FS [MTD] [NAND] Add parent info for CAFÉ controller [MTD] support driver model updates [MTD] driver model updates (part 2) [MTD] driver model updates [MTD] [NAND] move gen_nand's probe function to .devinit.text [MTD] [MAPS] move sa1100 flash's probe function to .devinit.text [MTD] fix use after free in register_mtd_blktrans [MTD] [MAPS] Drop now unused sharpsl-flash map [MTD] ofpart: Check name property to determine partition nodes. ... Manually fix trivial conflict in drivers/mtd/maps/Makefile
| * | | [MTD] struct device - replace bus_id with dev_name(), dev_set_name()Kay Sievers2009-04-061-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | Acked-by: Greg Kroah-Hartman <gregkh@suse.de> Signed-off-by: Kay Sievers <kay.sievers@vrfy.org> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
| * | | [MTD] [NOR] Fixup for Numonyx M29W128 chipsDarius Augulis2009-04-061-0/+11
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Prevent NUMONYX M29W128G memories from using write buffer, because it doesn't work properly. Signed-off-by: Darius Augulis <augulis.darius@gmail.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
| * | | [MTD] mtdpart: Make ecc_stats more realistic.Yauhen Kharuzhy2009-04-061-2/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | In the existing implementation, ecc_stats fields are incremented only by one, regardless of master mtd errors number. For example, if there are N errors were corrected by ECC, partition ecc_stats.corrected will be incremented by one. This commit changes simple increment to sum of old value and parent mtd error count. Signed-off-by: Yauhen Kharuzhy <jekhor@gmail.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
| * | | powerpc/85xx: TQM8548: Update DTS file for multi-chip supportWolfgang Grandegger2009-04-062-4/+10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch adds multi-chip support for the Micron MT29F8G08FAB NAND flash memory on the TQM8548 modules. Signed-off-by: Wolfgang Grandegger <wg@grandegger.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
| * | | powerpc: NAND: FSL UPM: document new bindingsWolfgang Grandegger2009-04-061-2/+37
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch adds documentation for the new NAND FSL UPM bindings for: NAND: FSL-UPM: add multi chip support NAND: FSL-UPM: Add wait flags to support board/chip specific delays It also documents the old binding for "chip-delay". Signed-off-by: Wolfgang Grandegger <wg@grandegger.com> Acked-by: Anton Vorontsov <avorontsov@ru.mvista.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
| * | | [MTD] [NAND] FSL-UPM: Add wait flags to support board/chip specific delaysWolfgang Grandegger2009-04-061-2/+18
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The NAND flash on the TQM8548_BE modules requires a short delay after running the UPM pattern. The TQM8548_BE requires a further short delay after writing out a buffer. Normally the R/B pin should be checked, but it's not connected on the TQM8548_BE. The existing driver uses similar fixed delay points. To manage these extra delays in a more general way, I introduced the "fsl,ump-wait-flags" property allowing the board- specific driver to specify various types of extra delay. Signed-off-by: Wolfgang Grandegger <wg@grandegger.com> Acked-by: Anton Vorontsov <avorontsov@ru.mvista.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
| * | | [MTD] [NAND] FSL-UPM: add multi chip supportWolfgang Grandegger2009-04-062-24/+77
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch adds support for multi-chip NAND devices to the FSL-UPM driver. This requires support for multiple GPIOs for the RNB pins. The NAND chips are selected through address lines defined by the FDT property "fsl,upm-addr-line-cs-offsets". Signed-off-by: Wolfgang Grandegger <wg@grandegger.com> Acked-by: Anton Vorontsov <avorontsov@ru.mvista.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
| * | | [MTD] [NOR] Add device parent info to physmap_ofDavid Woodhouse2009-04-061-0/+1
| | | | | | | | | | | | | | | | Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
| * | | [MTD] [NAND] Add support for NAND on the Socrates boardWolfgang Grandegger2009-04-063-0/+332
| | | | | | | | | | | | | | | | | | | | | | | | Signed-off-by: Ilya Yanok <yanok@emcraft.com> Acked-by: Wolfgang Grandegger <wg@grandegger.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
| * | | [MTD] [NAND] Add support for 4KiB pages.Thomas Gleixner2009-04-062-2/+20
| | | | | | | | | | | | | | | | | | | | | | | | Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Sebastian Siewior <bigeasy@linutronix.de> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
| * | | [MTD] sysfs support should not depend on CONFIG_PROC_FSKevin Cernekee2009-04-041-3/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Move the driver model init code out of the "#ifdef CONFIG_PROC_FS" block. Tested with both values of CONFIG_PROC_FS . Tested with CONFIG_MTD=m . Issue was reported here: http://lkml.org/lkml/2009/4/4/107 Signed-off-by: Kevin Cernekee <kpc.mtd@gmail.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
| * | | [MTD] [NAND] Add parent info for CAFÉ controllerDavid Woodhouse2009-04-041-0/+1
| | | | | | | | | | | | | | | | Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
| * | | [MTD] support driver model updatesDavid Brownell2009-04-048-0/+13
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Follow-on patch to the previous driver model patch for the MTD framework. This one makes various MTD drivers connect to the driver model tree, so /sys/devices/virtual/mtd/* nodes are no longer present ... mostly drivers used on boards I have handy. Based on a patch from Kay Sievers. Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
| * | | [MTD] driver model updates (part 2)Kevin Cernekee2009-04-041-21/+90
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 1) Add more sysfs attributes: flags, size, erasesize, writesize, oobsize, numeraseregions, name 2) Move core_initcall() code into init_mtd(). The original approach does not work if CONFIG_MTD=m . 3) Add device_unregister() in del_mtd_device() so that devices get removed from sysfs as each driver is unloaded. Signed-off-by: Kevin Cernekee <kpc.mtd@gmail.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
| * | | [MTD] driver model updatesDavid Brownell2009-04-045-42/+137
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Update driver model support in the MTD framework, so it fits better into the current udev-based hotplug framework: - Each mtd_info now has a device node. MTD drivers should set the dev.parent field to point to the physical device, before setting up partitions or otherwise declaring MTDs. - Those device nodes always map to /sys/class/mtdX device nodes, which no longer depend on MTD_CHARDEV. - Those mtdX sysfs nodes have a "starter set" of attributes; it's not yet sufficient to replace /proc/mtd. - Enabling MTD_CHARDEV provides /sys/class/mtdXro/ nodes and the /sys/class/mtd*/dev attributes (for udev, mdev, etc). - Include a MODULE_ALIAS_CHARDEV_MAJOR macro. It'll work with udev creating the /dev/mtd* nodes, not just a static rootfs. So the sysfs structure is pretty much what you'd expect, except that readonly chardev nodes are a bit quirky. Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
| * | | [MTD] [NAND] move gen_nand's probe function to .devinit.textUwe Kleine-König2009-04-031-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | A pointer to plat_nand_probe is passed to the core via platform_driver_register and so the function must not disappear when the .init sections are discarded. Otherwise (if also having HOTPLUG=y) unbinding and binding a device to the driver via sysfs will result in an oops as does a device being registered late. An alternative to this patch is using platform_driver_probe instead of platform_driver_register plus removing the pointer to the probe function from the struct platform_driver. Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Cc: Kay Sievers <kay.sievers@vrfy.org> Cc: Hamish Moffatt <hamish@cloud.net.au> Cc: David Brownell <dbrownell@users.sourceforge.net> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Li Zefan <lizf@cn.fujitsu.com> Cc: Vitaly Wool <vitalywool@gmail.com> Cc: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
| * | | [MTD] [MAPS] move sa1100 flash's probe function to .devinit.textUwe Kleine-König2009-04-031-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | A pointer to sa1100_mtd_probe is passed to the core via platform_driver_register and so the function must not disappear when the .init sections are discarded. Otherwise (if also having HOTPLUG=y) unbinding and binding a device to the driver via sysfs will result in an oops as does a device being registered late. An alternative to this patch is using platform_driver_probe instead of platform_driver_register plus removing the pointer to the probe function from the struct platform_driver. Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Cc: Nicolas Pitre <nico@marvell.com> Cc: Russell King <rmk+kernel@arm.linux.org.uk> Cc: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
| * | | [MTD] fix use after free in register_mtd_blktransMarcin Slusarz2009-04-031-1/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Reported-by: Dan Carpenter <error27@gmail.com> Cc: Christoph Hellwig <hch@lst.de> Signed-off-by: Marcin Slusarz <marcin.slusarz@gmail.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
| * | | [MTD] [MAPS] Drop now unused sharpsl-flash mapDmitry Eremin-Solenikov2009-03-253-123/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Now as all PXA Zaurii are converted to use the physmap map, drop the sharpsl-flash map completely. Signed-off-by: Dmitry Eremin-Solenikov <dbaryshkov@gmail.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
| * | | [MTD] ofpart: Check name property to determine partition nodes.Benjamin Krill2009-03-241-0/+7
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | SLOF has a further node which could not be evaluated by the current routine. The current routine returns because the node hasn't the required reg property. As fix this patch adds a check to determine the partition child nodes. If the node is not a partition the number of total partitions will be decreased and loop continues with the next nodes. Signed-off-by: Benjamin Krill <ben@codiert.org> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
| * | | [MTD] [NAND] sh_flctl: fix hardware ecc handling for 2048 byte pageYoshihiro Shimoda2009-03-241-6/+12
| | | | | | | | | | | | | | | | | | | | | | | | Signed-off-by: Jeremy Baker <Jeremy.Baker@renesas.com> Signed-off-by: Yoshihiro Shimoda <shimoda.yoshihiro@renesas.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
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