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* mm, x86, ptrace, bts: defer branch trace stoppingMarkus Metzger2009-04-075-104/+179
| | | | | | | | | | | | | | | | | | | | | When a ptraced task is unlinked, we need to stop branch tracing for that task. Since the unlink is called with interrupts disabled, and we need interrupts enabled to stop branch tracing, we defer the work. Collect all branch tracing related stuff in a branch tracing context. Reviewed-by: Oleg Nesterov <oleg@redhat.com> Signed-off-by: Markus Metzger <markus.t.metzger@intel.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: roland@redhat.com Cc: eranian@googlemail.com Cc: juan.villacis@intel.com Cc: ak@linux.jf.intel.com LKML-Reference: <20090403144550.712401000@intel.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* sched, hw-branch-tracer: add wait_task_context_switch() function to sched.hMarkus Metzger2009-04-072-0/+45
| | | | | | | | | | | | | | | | | | Add a function to wait until some other task has been switched out at least once. This differs from wait_task_inactive() subtly, in that the latter will wait until the task has left the CPU. Signed-off-by: Markus Metzger <markus.t.metzger@intel.com> Cc: markus.t.metzger@gmail.com Cc: roland@redhat.com Cc: eranian@googlemail.com Cc: oleg@redhat.com Cc: juan.villacis@intel.com Cc: ak@linux.jf.intel.com LKML-Reference: <20090403144549.794157000@intel.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* x86, bts: fix race when bts tracer is removedMarkus Metzger2009-04-071-21/+37
| | | | | | | | | | | | | | | | | | | | | | | | | | When the bts tracer is removed while the traced task is running, the write to clear the bts tracer pointer races with context switch code. Read the tracer once during a context switch. When a new tracer is installed, the bts tracer is set in the ds context before the tracer is initialized in order to claim the context for that tracer. This may result in write accesses using an uninitialized trace configuration when scheduling timestamps have been requested. Store active tracing flags separately and only set active flags after the tracing configuration has been initialized. Reviewed-by: Oleg Nesterov <oleg@redhat.com> Signed-off-by: Markus Metzger <markus.t.metzger@intel.com> Cc: roland@redhat.com Cc: eranian@googlemail.com Cc: juan.villacis@intel.com Cc: ak@linux.jf.intel.com LKML-Reference: <20090403144548.881338000@intel.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* Merge branch 'linus' into tracing/hw-branch-tracingIngo Molnar2009-04-077852-344691/+895547
|\ | | | | | | | | | | Merge reason: update to latest tracing and ptrace APIs Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * 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>
| | * | | [MTD] Fix a bad dependency in the Blackfin codeBernd Schmidt2009-03-241-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Fix a bad dependency in the Blackfin code on a RomFS config symbol that doesn't exist upstream. Signed-off-by: Bernd Schmidt <bernd.schmidt@analog.com> Signed-off-by: David Howells <dhowells@redhat.com> Tested-by: Bernd Schmidt <bernd.schmidt@analog.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
| | * | | NOMMU: Fix the RomFS Kconfig to ensure at least one backing store is selectedDavid Howells2009-03-241-6/+28
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Fix the configuration of the RomFS to make sure that at least one backing store method is always selected. This is done by rendering it down to a choice item that selects between Block, MTD and both. This also works correctly in the case that CONFIG_MTD=m: MTD cannot be selected as a backing store unless CONFIG_ROMFS_FS is also 'm'. Signed-off-by: David Howells <dhowells@redhat.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
| | * | | NOMMU: Make it possible for RomFS to use MTD devices directlyDavid Howells2009-03-247-667/+1062
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Change RomFS so that it can use MTD devices directly - without the intercession of the block layer - as well as using block devices. This permits RomFS: (1) to use the MTD direct mapping facility available under NOMMU conditions if the underlying device is directly accessible by the CPU (including XIP); (2) and thus to be used when the block layer is disabled. RomFS can be configured with support just for MTD devices, just for Block devices or for both. If RomFS is configured for both, then it will treat mtdblock device files as MTD backing stores, not block layer backing stores. I tested this using a CONFIG_MMU=n CONFIG_BLOCK=n kernel running on my FRV board with a RomFS image installed on the mtdram test device. I see my test program being run XIP: # cat /proc/maps ... c0c000b0-c0c01f8c r-xs 00000000 1f:00 144 /mnt/doshm ... GDB on the kernel can be used to show that these addresses are within the set-aside RAM space. Signed-off-by: David Howells <dhowells@redhat.com> Tested-by: Bernd Schmidt <bernd.schmidt@analog.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
| | * | | NOMMU: Add support for direct mapping through mtdconcat if possibleDavid Howells2009-03-241-0/+47
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add support for direct mapping through mtdconcat, if possible, by attaching the samebacking_dev_info structure to the master. It has some restrictions: (1) It won't permit direct mapping of concatenated devices that have differing BDIs. (2) It doesn't support maps that span the 'gap' between devices, although it possibly could if the devices spanned across return compatible (ie. contiguous) addresses from their get_unmapped_area() ops. Signed-off-by: Gavin Lambert <gavinl@compacsort.com> Signed-off-by: David Howells <dhowells@redhat.com> Tested-by: Bernd Schmidt <bernd.schmidt@analog.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-01 09:06:01 +0000