- 04 Jun, 2014 40 commits
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Fabian Frederick authored
v9fs_sysfs_init is only called by __init init_v9fs Signed-off-by:
Fabian Frederick <fabf@skynet.be> Cc: Eric Van Hensbergen <ericvh@gmail.com> Cc: Ron Minnich <rminnich@sandia.gov> Signed-off-by:
Andrew Morton <akpm@linux-foundation.org> Signed-off-by:
Linus Torvalds <torvalds@linux-foundation.org>
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Xue jiufei authored
dlm_recovery_ctxt.received is unused. ocfs2_should_refresh_lock_res() can only return 0 or 1, so the error handling code in ocfs2_super_lock() is unneeded. Signed-off-by:
joyce.xue <xuejiufei@huawei.com> Cc: Joel Becker <jlbec@evilplan.org> Cc: Mark Fasheh <mfasheh@suse.com> Signed-off-by:
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Joseph Qi authored
Ocfs2 cluster size may be 1MB, which has 20 bits. When resize, the input new clusters is mostly the number of clusters in a group descriptor(32256). Since the input clusters is defined as type int, so it will overflow when shift left 20 bits and then lead to incorrect global bitmap i_size. Signed-off-by:
Joseph Qi <joseph.qi@huawei.com> Cc: Mark Fasheh <mfasheh@suse.com> Cc: Joel Becker <jlbec@evilplan.org> Signed-off-by:
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Joseph Qi authored
Parameters new_clusters and first_new_cluster are not used in ocfs2_update_last_group_and_inode, so remove them. Signed-off-by:
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Xue jiufei authored
We found a race situation when dlm recovery and node joining occurs simultaneously if the network state is bad. N1 N4 start joining dlm and send query join to all live nodes set joining node to N1, return OK send query join to other live nodes and it may take a while call dlm_send_join_assert() to send assert join message when N2 is down, so keep trying to send message to N2 until find N2 is down send assert join message to N3, but connection is down with N3, so it may take a while become the recovery master for N2 and send begin reco message to other nodes in domain map but no N1 connection with N3 is rebuild, then send assert join to N4 call dlm_assert_joined_handler(), add N1 to domain_map dlm recovery done, send finalize message to nodes in domain map, including N1 receiving finalize message, trigger the BUG() because recovery master mismatch. Signed-off-by: -
Xue jiufei authored
Revert commit 75f82eaa ("ocfs2: fix NULL pointer dereference when dismount and ocfs2rec simultaneously") because it may cause a umount hang while shutting down the truncate log. fix NULL pointer dereference when dismount and ocfs2rec simultaneously The situation is as followes: ocfs2_dismout_volume -> ocfs2_recovery_exit -> free osb->recovery_map -> ocfs2_truncate_shutdown -> lock global bitmap inode -> ocfs2_wait_for_recovery -> check whether osb->recovery_map->rm_used is zero Because osb->recovery_map is already freed, rm_used can be any other values, so it may yield umount hang. To prevent NULL pointer dereference while getting sys_root_inode, we use a osb_tl_disable flag to disable schedule osb_truncate_log_wq after truncate log shutdown. Signed-off-by:
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Fabian Frederick authored
ocfs_info_foo() and ocfs2_get_request_ptr functions are only used in ioctl.c Signed-off-by:
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Xue jiufei authored
We found there is a conversion deadlock when the owner of lockres happened to crash before send DLM_PROXY_AST_MSG for a downconverting lock. The situation is as follows: Node1 Node2 Node3 the owner of lockresA lock_1 granted at EX mode and call ocfs2_cluster_unlock to decrease ex_holders. converting lock_3 from NL to EX send DLM_PROXY_AST_MSG to Node1, asking Node 1 to downconvert. receiving DLM_PROXY_AST_MSG, thread ocfs2dc send DLM_CONVERT_LOCK_MSG to Node2 to downconvert lock_1(EX->NL). lock_1 can be granted and put it into pending_asts list, return DLM_NORMAL. then something happened and Node2 crashed. received DLM_NORMAL, waiting for DLM_PROXY_AST_MSG. selected as the recovery master, receving migrate lock from Node1, queue lock_1 to the tail of converting list. After dlm recovery, converting list in the master of lockresA(Node3) will be: converting list head <-> lock_3(NL->EX) <->lock_1(EX<->NL). Requested mode of lock_3 is not compatible with the granted mode of lock_1, so it can not be granted. and lock_1 can not downconvert because covnerting queue is strictly FIFO. So a deadlock is created. We think function dlm_process_recovery_data() should queue_ast for lock_1 or alter the order of lock_1 and lock_3, so dlm_thread can process lock_1 first. And if there are multiple downconverting locks, they must convert form PR to NL, so no need to sort them. Signed-off-by: -
Joseph Qi authored
Once JBD2_ABORT is set, ocfs2_commit_cache will fail in ocfs2_commit_thread. Then it will get into a loop with mass logs. This will meaninglessly consume a larger number of resource and may lead to the system hanging. So limit printk in this case. [akpm@linux-foundation.org: document the msleep] Signed-off-by:
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George Spelvin authored
There are two standard techniques for dereferencing structures pointed to by void *: cast to the right type each time they're used, or assign to local variables of the right type. But there's no need to do *both*. Signed-off-by:
George Spelvin <linux@horizon.com> Cc: Mark Fasheh <mfasheh@suse.com> Acked-by:
Joel Becker <jlbec@evilplan.org> Reviewed-by:
Jie Liu <jeff.liu@oracle.com> Signed-off-by:
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Fabian Frederick authored
Replace strncpy(size 63) by defined value. Signed-off-by:
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Fabian Frederick authored
Static values are automatically initialized to NULL. Signed-off-by:
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Fabian Frederick authored
Direct conversion of one KERN_DEBUG message without DEBUG definition (suggested by Josh Triplett) That message will now be disabled by default. (see Documentation/CodingStyle Chapter 13) Signed-off-by:
Josh Triplett <josh@joshtriplett.org> Signed-off-by:
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Fabian Frederick authored
Add ODEBUG: prefix to pr_fmt Signed-off-by:
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Fabian Frederick authored
Convert all printk to pr_foo() except KERN_DEBUG (see Documentation/CodingStyle Chapter 13) Signed-off-by:
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Fabian Frederick authored
Add pr_fmt based on module name. Signed-off-by:
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Fabian Frederick authored
Signed-off-by:
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Fabian Frederick authored
Fix function parameter documentation EXPORT_SYMBOLS moved after corresponding functions Small coding style and checkpatch warning fixes Signed-off-by:
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Andrew Morton authored
__uc32_ioremap_pfn_caller() should return NULL when the pfn is found to be invalid. From a recommendation by Guan Xuetao. Cc: Guan Xuetao <gxt@mprc.pku.edu.cn> Cc: Fabian Frederick <fabf@skynet.be> Signed-off-by:
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Fabian Frederick authored
Coalesce formats. [akpm@linux-foundation.org: undo crazy long line] Signed-off-by:
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Fabian Frederick authored
Update the last pr_warning callsite in fs branch Signed-off-by:
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Christoph Lameter authored
__get_cpu_var() is used for multiple purposes in the kernel source. One of them is address calculation via the form &__get_cpu_var(x). This calculates the address for the instance of the percpu variable of the current processor based on an offset. Other use cases are for storing and retrieving data from the current processors percpu area. __get_cpu_var() can be used as an lvalue when writing data or on the right side of an assignment. __get_cpu_var() is defined as : #define __get_cpu_var(var) (*this_cpu_ptr(&(var))) __get_cpu_var() always only does an address determination. However, store and retrieve operations could use a segment prefix (or global register on other platforms) to avoid the address calculation. this_cpu_write() and this_cpu_read() can directly take an offset into a percpu area and use optimized assembly code to read and write per cpu variables. This patch converts __get_cpu_var into either an explicit address calculation using this_cpu_ptr() or into a use of this_cpu operations that use the offset. Thereby address calculations are avoided and less registers are used when code is generated. At the end of the patch set all uses of __get_cpu_var have been removed so the macro is removed too. The patch set includes passes over all arches as well. Once these operations are used throughout then specialized macros can be defined in non -x86 arches as well in order to optimize per cpu access by f.e. using a global register that may be set to the per cpu base. Transformations done to __get_cpu_var() 1. Determine the address of the percpu instance of the current processor. DEFINE_PER_CPU(int, y); int *x = &__get_cpu_var(y); Converts to int *x = this_cpu_ptr(&y); 2. Same as #1 but this time an array structure is involved. DEFINE_PER_CPU(int, y[20]); int *x = __get_cpu_var(y); Converts to int *x = this_cpu_ptr(y); 3. Retrieve the content of the current processors instance of a per cpu variable. DEFINE_PER_CPU(int, y); int x = __get_cpu_var(y) Converts to int x = __this_cpu_read(y); 4. Retrieve the content of a percpu struct DEFINE_PER_CPU(struct mystruct, y); struct mystruct x = __get_cpu_var(y); Converts to memcpy(&x, this_cpu_ptr(&y), sizeof(x)); 5. Assignment to a per cpu variable DEFINE_PER_CPU(int, y) __get_cpu_var(y) = x; Converts to __this_cpu_write(y, x); 6. Increment/Decrement etc of a per cpu variable DEFINE_PER_CPU(int, y); __get_cpu_var(y)++ Converts to __this_cpu_inc(y) Signed-off-by:Christoph Lameter <cl@linux.com> Tested-by: Geert Uytterhoeven <geert@linux-m68k.org> [compilation only] Cc: Paul Mundt <lethal@linux-sh.org> Signed-off-by:
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Fabian Frederick authored
Static values are automatically initialized to NULL. Signed-off-by:
Anton Altaparmakov <anton@tuxera.com> Signed-off-by:
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Heinrich Schuchardt authored
Without this patch fanotify_init does not validate the value passed in event_f_flags. When a fanotify event is read from the fanotify file descriptor a new file descriptor is created where file.f_flags = event_f_flags. Internal and external open flags are stored together in field f_flags of struct file. Hence, an application might create file descriptors with internal flags like FMODE_EXEC, FMODE_NOCMTIME set. Jan Kara and Eric Paris both aggreed that this is a bug and the value of event_f_flags should be checked: https://lkml.org/lkml/2014/4/29/522 https://lkml.org/lkml/2014/4/29/539 This updated patch version considers the comments by Michael Kerrisk in https://lkml.org/lkml/2014/5/4/10 With the patch the value of event_f_flags is checked. When specifying an invalid value error EINVAL is returned. Internal flags are disallowed. File creation flags are disallowed: O_CREAT, O_DIRECTORY, O_EXCL, O_NOCTTY, O_NOFOLLOW, O_TRUNC, and O_TTY_INIT. Flags which do not make sense with fanotify are disallowed: __O_TMPFILE, O_PATH, FASYNC, and O_DIRECT. This leaves us with the following allowed values: O_RDONLY, O_WRONLY, O_RDWR are basic functionality. The are stored in the bits given by O_ACCMODE. O_APPEND is working as expected. The value might be useful in a logging application which appends the current status each time the log is opened. O_LARGEFILE is needed for files exceeding 4GB on 32bit systems. O_NONBLOCK may be useful when monitoring slow devices like tapes. O_NDELAY is equal to O_NONBLOCK except for platform parisc. To avoid code breaking on parisc either both flags should be allowed or none. The patch allows both. __O_SYNC and O_DSYNC may be used to avoid data loss on power disruption. O_NOATIME may be useful to reduce disk activity. O_CLOEXEC may be useful, if separate processes shall be used to scan files. Once this patch is accepted, the fanotify_init.2 manpage has to be updated. Signed-off-by:
Heinrich Schuchardt <xypron.glpk@gmx.de> Reviewed-by:
Jan Kara <jack@suse.cz> Cc: Michael Kerrisk <mtk.manpages@gmail.com> Cc: Valdis Kletnieks <Valdis.Kletnieks@vt.edu> Signed-off-by:
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Heinrich Schuchardt authored
If fanotify_mark is called with illegal value of arguments flags and marks it usually returns EINVAL. When fanotify_mark is called with FAN_MARK_FLUSH the argument flags is not checked for irrelevant flags like FAN_MARK_IGNORED_MASK. The patch removes this inconsistency. If an irrelevant flag is set error EINVAL is returned. Signed-off-by:
Michael Kerrisk <mtk.manpages@gmail.com> Acked-by:
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David Cohen authored
Do not initialize private_destroy_list twice. list_replace_init() already takes care of initializing private_destroy_list. We don't need to initialize it with LIST_HEAD() beforehand. Signed-off-by:
David Cohen <david.a.cohen@linux.intel.com> Cc: Jan Kara <jack@suse.cz> Signed-off-by:
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Heinrich Schuchardt authored
Before the patch, read creates FAN_ACCESS_PERM and FAN_ACCESS events, readdir creates only FAN_ACCESS_PERM events. This is inconsistent. After the patch, readdir creates FAN_ACCESS_PERM and FAN_ACCESS events. Signed-off-by:
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Heinrich Schuchardt authored
Originally from Tvrtko Ursulin (https://lkml.org/lkml/2011/1/12/112) Avoid having to provide a fake/invalid fd and path when flushing marks Currently for a group to flush marks it has set it needs to provide a fake or invalid (but resolvable) file descriptor and path when calling fanotify_mark. This patch pulls the flush handling a bit up so file descriptor and path are completely ignored when flushing. I reworked the patch to be applicable again (the signature of fanotify_mark has changed since Tvrtko's work). Signed-off-by:
Eric Paris <eparis@redhat.com> Signed-off-by:
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Fabian Frederick authored
Replace seq_printf where possible + coalesce formats from 2 existing seq_puts Signed-off-by:
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Fabian Frederick authored
All printk converted to pr_foo() except internal.h: printk(KERN_DEBUG Coalesce formats. Add pr_fmt Signed-off-by:
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Tetsuo Handa authored
Commit 786235ee ("kthread: make kthread_create() killable") meant for allowing kthread_create() to abort as soon as killed by the OOM-killer. But returning -ENOMEM is wrong if killed by SIGKILL from userspace. Change kthread_create() to return -EINTR upon SIGKILL. Signed-off-by:
Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp> Cc: Oleg Nesterov <oleg@redhat.com> Acked-by:
David Rientjes <rientjes@google.com> Cc: <stable@vger.kernel.org> [3.13+] Signed-off-by:
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Naoya Horiguchi authored
Currently hugepage migration is available for all archs which support pmd-level hugepage, but testing is done only for x86_64 and there're bugs for other archs. So to avoid breaking such archs, this patch limits the availability strictly to x86_64 until developers of other archs get interested in enabling this feature. Simply disabling hugepage migration on non-x86_64 archs is not enough to fix the reported problem where sys_move_pages() hits the BUG_ON() in follow_page(FOLL_GET), so let's fix this by checking if hugepage migration is supported in vma_migratable(). Signed-off-by:
Naoya Horiguchi <n-horiguchi@ah.jp.nec.com> Reported-by:
Michael Ellerman <mpe@ellerman.id.au> Tested-by:
Hugh Dickins <hughd@google.com> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Tony Luck <tony.luck@intel.com> Cc: Russell King <rmk@arm.linux.org.uk> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: James Hogan <james.hogan@imgtec.com> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: David Miller <davem@davemloft.net> Cc: <stable@vger.kernel.org> [3.12+] Signed-off-by:
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Hugh Dickins authored
Trinity reports BUG: sleeping function called from invalid context at kernel/locking/rwsem.c:47 in_atomic(): 0, irqs_disabled(): 0, pid: 5787, name: trinity-c27 __might_sleep < down_write < __put_anon_vma < page_get_anon_vma < migrate_pages < compact_zone < compact_zone_order < try_to_compact_pages .. Right, since conversion to mutex then rwsem, we should not put_anon_vma() from inside an rcu_read_lock()ed section: fix the two places that did so. And add might_sleep() to anon_vma_free(), as suggested by Peter Zijlstra. Fixes: 88c22088 ("mm: optimize page_lock_anon_vma() fast-path") Reported-by:
Dave Jones <davej@redhat.com> Signed-off-by:
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Andi Kleen authored
Horiguchi-san has done most of the work on hwpoison in the last years and he also does most of the reviewing. So I'm passing on the hwpoison maintainership to him. Signed-off-by:
Andi Kleen <ak@linux.intel.com> Cc: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com> Signed-off-by:
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Joe Perches authored
Might as well be the get_maintainer maintainer... Signed-off-by:
Joe Perches <joe@perches.com> Signed-off-by:
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Konstantin Khlebnikov authored
Recently added page-cache dumping is known to be a little bit racy. But after race with truncate it just dies due to unhandled SIGBUS when it tries to poke pages beyond the new end of file. This patch adds handler for SIGBUS which skips the rest of the file. Signed-off-by:
Konstantin Khlebnikov <koct9i@gmail.com> Cc: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com> Cc: <stable@vger.kernel.org> Signed-off-by:
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Linus Torvalds authored
Merge tag 'devicetree-for-3.16' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux into next Pull DeviceTree updates from Rob Herring: - Another round of clean-up of FDT related code in architecture code. This removes knowledge of internal FDT details from most architectures except powerpc. - Conversion of kernel's custom FDT parsing code to use libfdt. - DT based initialization for generic serial earlycon. The introduction of generic serial earlycon support went in through the tty tree. - Improve the platform device naming for DT probed devices to ensure unique naming and use parent names instead of a global index. - Fix a race condition in of_update_property. - Unify the various linker section OF match tables and fix several function prototype errors. - Update platform_get_irq_byname to work in deferred probe cases. - 2 binding doc updates * tag 'devicetree-for-3.16' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux: (58 commits) of: handle NULL node in next_child iterators of/irq: provide more wrappers for !CONFIG_OF devicetree: bindings: Document micrel vendor prefix dt: bindings: dwc2: fix required value for the phy-names property of_pci_irq: kill useless variable in of_irq_parse_pci() of/irq: do irq resolution in platform_get_irq_byname() of: Add a testcase for of_find_node_by_path() of: Make of_find_node_by_path() handle /aliases of: Create unlocked version of for_each_child_of_node() lib: add glibc style strchrnul() variant of: Handle memory@0 node on PPC32 only pci/of: Remove dead code of: fix race between search and remove in of_update_property() of: Use NULL for pointers of: Stop naming platform_device using dcr address of: Ensure unique names without sacrificing determinism tty/serial: pl011: add DT based earlycon support of/fdt: add FDT serial scanning for earlycon of/fdt: add FDT address translation support serial: earlycon: add DT support ...
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git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/soundLinus Torvalds authored
Pull sound updates from Takashi Iwai: "At this time, majority of changes come from ASoC world while we got a few new drivers in other places for FireWire and USB. There have been lots of ASoC core cleanups / refactoring, but very little visible to external users. ASoC: - Support for specifying aux CODECs in DT - Removal of the deprecated mux and enum macros - More moves towards full componentisation - Removal of some unused I/O code - Lots of cleanups, fixes and enhancements to the davinci, Freescale, Haswell and Realtek drivers - Several drivers exposed directly in Kconfig for use with simple-card - GPIO descriptor support for jacks - More updates and fixes to the Freescale SSI, Intel and rsnd drivers - New drivers for Cirrus CS42L56, Realtek RT5639, RT5642 and RT5651 and ST STA350, Analog Devices ADAU1361, ADAU1381, ADAU1761 and ADAU1781, and Realtek RT5677 HD-audio: - Clean up Dell headset quirks - Noise fixes for Dell and Sony laptops - Thinkpad T440 dock fix - Realtek codec updates (ALC293,ALC233,ALC3235) - Tegra HD-audio HDMI support FireWire-audio: - FireWire audio stack enhancement (AMDTP, MIDI), support for incoming isochronous stream and duplex streams with timestamp synchronization - BeBoB-based devices support - Fireworks-based device support USB-audio: - Behringer BCD2000 USB device support Misc: - Clean up of a few old drivers, atmel, fm801, etc" * tag 'sound-3.16-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound: (480 commits) ASoC: Fix wrong argument for card remove callbacks ASoC: free jack GPIOs before the sound card is freed ALSA: firewire-lib: Remove a comment about restriction of asynchronous operation ASoC: cache: Fix error code when not using ASoC level cache ALSA: hda/realtek - Fix COEF widget NID for ALC260 replacer fixup ALSA: hda/realtek - Correction of fixup codes for PB V7900 laptop ALSA: firewire-lib: Use IEC 61883-6 compliant labels for Raw Audio data ASoC: add RT5677 CODEC driver ASoC: intel: The Baytrail/MAX98090 driver depends on I2C ASoC: rt5640: Add the function "get_clk_info" to RL6231 shared support ASoC: rt5640: Add the function of the PLL clock calculation to RL6231 shared support ASoC: rt5640: Add RL6231 class device shared support for RT5640, RT5645 and RT5651 ASoC: cache: Fix possible ZERO_SIZE_PTR pointer dereferencing error. ASoC: Add helper functions to cast from DAPM context to CODEC/platform ALSA: bebob: sizeof() vs ARRAY_SIZE() typo ASoC: wm9713: correct mono out PGA sources ALSA: synth: emux: soundfont.c: Cleaning up memory leak ASoC: fsl: Remove dependencies of boards for SND_SOC_EUKREA_TLV320 ASoC: fsl-ssi: Use regmap ASoC: fsl-ssi: reorder and document fsl_ssi_private ... -
git://git.kernel.org/pub/scm/linux/kernel/git/tomba/linuxLinus Torvalds authored
Pull omap fbdev changes from Tomi Valkeinen: - DT support for the panel drivers that were still missing it - TI AM43xx support - TI OMAP5 support * tag 'fbdev-omap-3.16' of git://git.kernel.org/pub/scm/linux/kernel/git/tomba/linux: (46 commits) OMAPDSS: move 'compatible' converter to omapdss driver OMAPDSS: HDMI: fix devm_ioremap_resource error checks OMAPDSS: HDMI: remove unused defines OMAPDSS: HDMI: cleanup WP ioremaps OMAPDSS: panel NEC-NL8048HL11 DT support Doc/DT: Add DT binding documentation for TPO td043mtea1 panel OMAPDSS: Panel TPO-TD043MTEA1 DT support Doc/DT: Add DT binding documentation for SHARP LS037V7DW01 OMAPDSS: panel sharp-ls037v7dw01 DT support OMAPDSS: panel-sharp-ls037v7dw01: update to use gpiod Doc/DT: Add binding doc for lgphilips,lb035q02.txt OMAPDSS: panel-lgphilips-lb035q02: Add DT support OMAPDSS: panel-lgphilips-lb035q02: use gpiod for enable gpio OMAPDSS: hdmi5_core: Fix compilation with OMAP5_DSS_HDMI_AUDIO OMAPDSS: panel-dpi: enable-gpio OMAPDSS: Fix writes to DISPC_POL_FREQ Doc/DT: Add OMAP5 DSS DT bindings OMAPDSS: HDMI: cleanup ioremaps OMAPDSS: HDMI: Add OMAP5 HDMI support OMAPDSS: HDMI: PLL changes for OMAP5 ...
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git://git.kernel.org/pub/scm/linux/kernel/git/tomba/linuxLinus Torvalds authored
Pull main fbdev changes from Tomi Valkeinen: "Mainly fixes and small improvements. The biggest change seems to be backlight control support for mx3fb" * tag 'fbdev-main-3.16' of git://git.kernel.org/pub/scm/linux/kernel/git/tomba/linux: (31 commits) drivers/video/fbdev/fb-puv3.c: Add header files for function unifb_mmap video: fbdev: s3fb.c: Fix for possible null pointer dereference video: fbdev: grvga.c: Fix for possible null pointer dereference matroxfb: perform a dummy read of M_STATUS video: of: display_timing: fix default native-mode setting video: delete unneeded call to platform_get_drvdata video: mx3fb: Add backlight control support video: omap: delete support for early fbmem allocation video: of: display_timing: remove two unsafe error messages fbdev: fbmem: remove positive test on unsigned values fbcon: Fix memory leak in con2fb_release_oldinfo() video: Kconfig: Add a dependency to the Goldfish framebuffer driver video: exynos: Add a dependency to the menu video: mx3fb: Use devm_kzalloc video/nuc900: allow modular build video: atmel needs FB_BACKLIGHT video: export fb_prepare_logo video/mbx: fix building debugfs support video/omap: fix modular build video: clarify I2C dependencies ...
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