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2015-02-27Merge branch 'rhashtable'David S. Miller
Daniel Borkmann says: ==================== rhashtable updates As discussed, I'm sending out rhashtable fixups for -net. I have a couple of more patches I was working on last week pending, i.e. to get rid of ht->nelems and ht->shift atomic operations which speed-up pure insertions/deletions, e.g. on my laptop I have 2 threads, inserting 7M entries each, that will reduce insertion time from ~1,450 ms to 865 ms (performance should even be better after removing the grow/shrink indirections). I guess that however is rather something for net-next. ==================== Signed-off-by: David S. Miller <davem@davemloft.net>
2015-02-27rhashtable: remove indirection for grow/shrink decision functionsDaniel Borkmann
Currently, all real users of rhashtable default their grow and shrink decision functions to rht_grow_above_75() and rht_shrink_below_30(), so that there's currently no need to have this explicitly selectable. It can/should be generic and private inside rhashtable until a real use case pops up. Since we can make this private, we'll save us this additional indirection layer and can improve insertion/deletion time as well. Reference: http://patchwork.ozlabs.org/patch/443040/ Suggested-by: David S. Miller <davem@davemloft.net> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Acked-by: Thomas Graf <tgraf@suug.ch> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-02-27rhashtable: unconditionally grow when max_shift is not specifiedDaniel Borkmann
While commit c0c09bfdc415 ("rhashtable: avoid unnecessary wakeup for worker queue") rightfully moved part of the decision making of whether we should expand or shrink from the expand/shrink functions themselves into insert/delete functions in order to avoid unnecessary worker wake-ups, it however introduced a regression by doing so. Before that change, if no max_shift was specified (= 0) on rhashtable initialization, rhashtable_expand() would just grow unconditionally and lets the available memory be the limiting factor. After that change, if no max_shift was specified, there would be _no_ expansion step at all. Given that netlink and tipc have a max_shift specified, it was not visible there, but Josh Hunt reported that if nft that starts out with a default element hint of 3 if not otherwise provided, would slow i.e. inserts down trememdously as it cannot grow larger to relax table occupancy. Given that the test case verifies shrinks/expands manually, we also must remove pointer to the helper functions to explicitly avoid parallel resizing on insertions/deletions. test_bucket_stats() and test_rht_lookup() could also be wrapped around rhashtable mutex to explicitly synchronize a walk from resizing, but I think that defeats the actual test case which intended to have explicit test steps, i.e. 1) inserts, 2) expands, 3) shrinks, 4) deletions, with object verification after each stage. Reported-by: Josh Hunt <johunt@akamai.com> Fixes: c0c09bfdc415 ("rhashtable: avoid unnecessary wakeup for worker queue") Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Cc: Ying Xue <ying.xue@windriver.com> Cc: Josh Hunt <johunt@akamai.com> Acked-by: Thomas Graf <tgraf@suug.ch> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-02-27vhost: drop hard-coded num_buffers sizeMichael S. Tsirkin
The 2 that we use for copy_to_iter comes from sizeof(u16), it used to be that way before the iov iter update. Fix it up, making it obvious the size of stack access is right. Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-02-27vhost: cleanup iterator update logicMichael S. Tsirkin
Recent iterator-related changes in vhost made it harder to follow the logic fixing up the header. In fact, the fixup always happens at the same offset: sizeof(virtio_net_hdr): sometimes the fixup iterator is updated by copy_to_iter, sometimes-by iov_iter_advance. Rearrange code to make this obvious. Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-02-27rocker: silence shift wrapping warningDan Carpenter
"val" is declared as a u64 so static checkers complain that this shift can wrap. I don't have the hardware but probably it's doesn't have over 31 ports. Still we may as well silence the warning even if it's not a real bug. Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Acked-by: Jiri Pirko <jiri@resnulli.us> Acked-by: Scott Feldman <sfeldma@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-02-27rocker: add a check for NULL in rocker_probe_ports()Dan Carpenter
Make sure kmalloc() succeeds. Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Acked-by: Scott Feldman <sfeldma@gmail.com> Acked-by: Jiri Pirko <jiri@resnulli.us> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-02-27cxgb4: Fix PCI-E Memory window interface for big-endian systemsHariprasad Shenai
When doing reads and writes to adapter memory via the PCI-E Memory Window interface, data gets swizzled on 4-byte boundaries on Big-Endian systems because we need to account for the register read/write interface which incorporates a swizzle onto the Little-Endian PCI-E Bus. Based on original work by Casey Leedom <leedom@chelsio.com> Signed-off-by: Hariprasad Shenai <hariprasad@chelsio.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-02-27enic: do notify_check before returning creditsSujith Sankar
We should complete notify_check before returning the credits. Once we return the credits, adaptor may access the notify data. Signed-off-by: Sujith Sankar <ssujith@cisco.com> Signed-off-by: Govindarajulu Varadarajan <_govind@gmx.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-02-27Code of ConflictGreg Kroah-Hartman
This file provides a basic guide for how to handle conflict resolution when it comes up in the development process. Acked-by: Alex Deucher <alexander.deucher@amd.com> Acked-by: Arjan van de Ven <arjanvandeven@gmail.com> Acked-by: Arnaldo Carvalho de Melo <acme@redhat.com> Acked-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Acked-by: Chris Ball <chris@printf.net> Acked-by: Chris Mason <clm@fb.com> Acked-by: Chris Metcalf <cmetcalf@ezchip.com> Acked-by: Dan Carpenter <dan.carpenter@oracle.com> Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch> Acked-by: Dave Airlie <airlied@redhat.com> Acked-by: David Herrmann <dh.herrmann@gmail.com> Acked-by: Fabio Estevam <festevam@gmail.com> Acked-by: Felipe Balbi <balbi@ti.com> Acked-by: Geert Uytterhoeven <geert@linux-m68k.org> Acked-by: Gerd Hoffmann <kraxel@redhat.com> Acked-by: Grant Likely <grant.likely@linaro.org> Acked-by: Guenter Roeck <linux@roeck-us.net> Acked-by: H Hartley Sweeten <hsweeten@visionengravers.com> Acked-by: Hannes Reinecke <hare@suse.de> Acked-by: Hans Verkuil <hans.verkuil@cisco.com> Acked-by: Hans de Goede <hdegoede@redhat.com> Acked-by: Hugh Dickins <hughd@google.com> Acked-by: Ingo Molnar <mingo@kernel.org> Acked-by: Jaegeuk Kim <jaegeuk@kernel.org> Acked-by: James Bottomley <James.Bottomley@HansenPartnership.com> Acked-by: Jens Axboe <axboe@kernel.dk> Acked-by: Jes Sorensen <Jes.Sorensen@gmail.com> Acked-by: Johan Hedberg <johan.hedberg@intel.com> Acked-by: Johan Hovold <johan@kernel.org> Acked-by: Johannes Berg <johannes@sipsolutions.net> Acked-by: John W. Linville <linville@tuxdriver.com> Acked-by: Jonathan Corbet <corbet@lwn.net> Acked-by: Josh Triplett <josh@joshtriplett.org> Acked-by: Julia Lawall <julia.lawall@lip6.fr> Acked-by: Kees Cook <keescook@chromium.org> Acked-by: Kevin Hilman <khilman@linaro.org> Acked-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> Acked-by: Kristen Carlson Accardi <kristen@linux.intel.com> Acked-by: Kyungmin Park <kyungmin.park@samsung.com> Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Acked-by: Linus Walleij <linus.walleij@linaro.org> Acked-by: Luis R. Rodriguez <mcgrof@do-not-panic.com> Acked-by: Magnus Damm <damm@opensource.se> Acked-by: Mark Brown <broonie@kernel.org> Acked-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com> Acked-by: Maxime Ripard <maxime.ripard@free-electrons.com> Acked-by: Mimi Zohar <zohar@linux.vnet.ibm.com> Acked-by: NeilBrown <neilb@suse.de> Acked-by: Olof Johansson <olof@lixom.net> Acked-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Acked-by: Rafael J. Wysocki <rafael@kernel.org> Acked-by: Rik van Riel <riel@redhat.com> Acked-by: Sachin Prabhu <sprabhu@redhat.com> Acked-by: Shuah Khan <shuahkh@osg.samsung.com> Acked-by: Simon Horman <horms@verge.net.au> Acked-by: Stephen Rothwell <sfr@canb.auug.org.au> Acked-by: Stephen Warren <swarren@wwwdotorg.org> Acked-by: Steven Rostedt <rostedt@goodmis.org> Acked-by: Takashi Iwai <tiwai@suse.de> Acked-by: Tejun Heo <tj@kernel.org> Acked-by: Theodore Ts'o <tytso@mit.edu> Acked-by: Tony Luck <tony.luck@intel.com> Acked-by: Will Deacon <will.deacon@arm.com> Acked-by: Willy Tarreau <w@1wt.eu> Acked-by: Zefan Li <lizefan@huawei.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-02-27arm64: cpuidle: add asm/proc-fns.h inclusionLorenzo Pieralisi
ARM64 CPUidle driver requires the cpu_do_idle function so that it can be used to enter the shallowest idle state, and it is declared in asm/proc-fns.h. The current ARM64 CPUidle driver does not include asm/proc-fns.h explicitly and it has so far relied on implicit inclusion from other header files. Owing to some header dependencies reshuffling this currently triggers build failures when CONFIG_ARM64_64K_PAGES=y: drivers/cpuidle/cpuidle-arm64.c: In function "arm64_enter_idle_state" drivers/cpuidle/cpuidle-arm64.c:42:3: error: implicit declaration of function "cpu_do_idle" [-Werror=implicit-function-declaration] cpu_do_idle(); ^ This patch adds the explicit inclusion of the asm/proc-fns.h header file in the arm64 asm/cpuidle.h header file, so that the build breakage is fixed and the required header inclusion is added to the appropriate arch back-end CPUidle header, already included by the CPUidle arm64 driver, where CPUidle arch related function declarations belong. Reported-by: Laura Abbott <lauraa@codeaurora.org> Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Acked-by: Will Deacon <will.deacon@arm.com> Tested-by: Mark Rutland <mark.rutland@arm.com> Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2015-02-27arm64: compat Fix siginfo_t -> compat_siginfo_t conversion on big endianCatalin Marinas
The native (64-bit) sigval_t union contains sival_int (32-bit) and sival_ptr (64-bit). When a compat application invokes a syscall that takes a sigval_t value (as part of a larger structure, e.g. compat_sys_mq_notify, compat_sys_timer_create), the compat_sigval_t union is converted to the native sigval_t with sival_int overlapping with either the least or the most significant half of sival_ptr, depending on endianness. When the corresponding signal is delivered to a compat application, on big endian the current (compat_uptr_t)sival_ptr cast always returns 0 since sival_int corresponds to the top part of sival_ptr. This patch fixes copy_siginfo_to_user32() so that sival_int is copied to the compat_siginfo_t structure. Cc: <stable@vger.kernel.org> Reported-by: Bamvor Jian Zhang <bamvor.zhangjian@huawei.com> Tested-by: Bamvor Jian Zhang <bamvor.zhangjian@huawei.com> Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2015-02-27arm64: Increase the swiotlb buffer size 64MBCatalin Marinas
With commit 3690951fc6d4 (arm64: Use swiotlb late initialisation), the swiotlb buffer size is limited to MAX_ORDER_NR_PAGES. However, there are platforms with 32-bit only devices that require bounce buffering via swiotlb. This patch changes the swiotlb initialisation to an early 64MB memblock allocation. In order to get the swiotlb buffer correctly allocated (via memblock_virt_alloc_low_nopanic), this patch also defines ARCH_LOW_ADDRESS_LIMIT to the maximum physical address capable of 32-bit DMA. Reported-by: Kefeng Wang <wangkefeng.wang@huawei.com> Tested-by: Kefeng Wang <wangkefeng.wang@huawei.com> Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2015-02-27s390/pci: unify pci_iomap symbol exportsSebastian Ott
Since commit 8cfc99b58366 ("s390: add pci_iomap_range") we use EXPORT_SYMBOL for pci_iomap but EXPORT_SYMBOL_GPL for pci_iounmap. Change the related functions to use EXPORT_SYMBOL like the asm-generic variants do. Signed-off-by: Sebastian Ott <sebott@linux.vnet.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2015-02-27s390/pci: fix [un]map_resources sequenceSebastian Ott
Commit 8cfc99b58366 ("s390: add pci_iomap_range") introduced counters to keep track of the number of mappings created. This revealed that we don't have our internal mappings in order when using hotunplug or resume from hibernate. This patch addresses both issues. Signed-off-by: Sebastian Ott <sebott@linux.vnet.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2015-02-27x86/xen: correct bug in p2m list initializationJuergen Gross
Commit 054954eb051f35e74b75a566a96fe756015352c8 ("xen: switch to linear virtual mapped sparse p2m list") introduced an error. During initialization of the p2m list a p2m identity area mapped by a complete identity pmd entry has to be split up into smaller chunks sometimes, if a non-identity pfn is introduced in this area. If this non-identity pfn is not at index 0 of a p2m page the new p2m page needed is initialized with wrong identity entries, as the identity pfns don't start with the value corresponding to index 0, but with the initial non-identity pfn. This results in weird wrong mappings. Correct the wrong initialization by starting with the correct pfn. Cc: stable@vger.kernel.org # 3.19 Reported-by: Stefan Bader <stefan.bader@canonical.com> Signed-off-by: Juergen Gross <jgross@suse.com> Tested-by: Stefan Bader <stefan.bader@canonical.com> Signed-off-by: David Vrabel <david.vrabel@citrix.com>
2015-02-27ALSA: oxfw: fix a condition and return code in start_stream()Takashi Sakamoto
The amdtp_stream_wait_callback() doesn't return minus value and the return code is not for error code. This commit fixes with a propper condition and an error code. Fixes: f3699e2c7745 ('ALSA: oxfw: Change the way to start stream') Reported-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp> Cc: <stable@vger.kernel.org> # 3.19+ Signed-off-by: Takashi Iwai <tiwai@suse.de>
2015-02-27USB: serial: cp210x: Adding Seletek device id'sMichiel vd Garde
These device ID's are not associated with the cp210x module currently, but should be. This patch allows the devices to operate upon connecting them to the usb bus as intended. Signed-off-by: Michiel van de Garde <mgparser@gmail.com> Cc: stable <stable@vger.kernel.org> Signed-off-by: Johan Hovold <johan@kernel.org>
2015-02-27ARC: Fix thread_saved_pc()Vineet Gupta
The old implementation assumed that SP at the time of __switch_to() is right above pt_regs which is almost certainly not the case as there will be some stack build up between entry into kernel and leading up to __switch_to Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
2015-02-27ARC: Fix KSTK_ESP()Vineet Gupta
/proc/<pid>/maps currently don't annotate stack vma with "[stack]" This is because KSTK_ESP ie expected to return usermode SP of tsk while currently it returns the kernel mode SP of a sleeping tsk. While the fix is trivial, we also need to adjust the ARC kernel stack unwinder to not use KSTK_SP and friends any more. Cc: <stable@vger.kernel.org> Reported-and-suggested-by: Alexey Brodkin <abrodkin@synopsys.com> Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
2015-02-27ARC: perf: Enable generic software eventsVineet Gupta
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
2015-02-27ARC: Make arc_unwind_core accessible externallyVineet Gupta
The arc unwinder can also be used for perf callchains. Signed-off-by: Mischa Jonker <mjonker@synopsys.com> Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
2015-02-27Merge branch 'drm-atmel-hlcdc-fixes' of ↵Dave Airlie
git://github.com/bbrezillon/linux-at91 into drm-fixes minor atmel hclcdc fixes. * 'drm-atmel-hlcdc-fixes' of git://github.com/bbrezillon/linux-at91: drm: atmel-hlcdc: remove clock polarity from crtc driver drm: atmel-hlcdc: remove useless pm_runtime_put_sync in probe drm: atmel-hlcdc: reset layer A2Q and UPDATE bits when disabling it
2015-02-27Merge tag 'drm-intel-fixes-2015-02-26' of ↵Dave Airlie
git://anongit.freedesktop.org/drm-intel into drm-fixes First batch of fixes for v4.0-rc, plenty of cc: stable material. * tag 'drm-intel-fixes-2015-02-26' of git://anongit.freedesktop.org/drm-intel: drm/i915: Fix frontbuffer false positve. drm/i915: Align initial plane backing objects correctly drm/i915: avoid processing spurious/shared interrupts in low-power states drm/i915: Check obj->vma_list under the struct_mutex drm/i915: Fix a use after free, and unbalanced refcounting drm/i915: Dell Chromebook 11 has PWM backlight drm/i915/skl: handle all pixel formats in skylake_update_primary_plane() drm/i915/bdw: PCI IDs ending in 0xb are ULT.
2015-02-27Merge branch 'drm-fixes-4.0' of git://people.freedesktop.org/~agd5f/linux ↵Dave Airlie
into drm-fixes misc radeon fixes. * 'drm-fixes-4.0' of git://people.freedesktop.org/~agd5f/linux: drm/radeon: only enable DP audio if the monitor supports it drm/radeon: fix atom aux payload size check for writes (v2) drm/radeon: fix 1 RB harvest config setup for TN/RL drm/radeon: enable SRBM timeout interrupt on EG/NI drm/radeon: enable SRBM timeout interrupt on SI drm/radeon: enable SRBM timeout interrupt on CIK v2 drm/radeon: dump full IB if we hit a packet error drm/radeon: disable mclk switching with 120hz+ monitors drm/radeon: use drm_mode_vrefresh() rather than mode->vrefresh drm/radeon: enable native backlight control on old macs
2015-02-26Merge tag 'hwmon-for-linus-v4.0-rc2' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging Pull hwmon fix from Guenter Roeck: "Add missing return value check to ads7828 driver" * tag 'hwmon-for-linus-v4.0-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging: hwmon: (ads7828) Check return value of devm_regmap_init_i2c
2015-02-27ARM: EXYNOS: Fix wrong hwirq of RTC interrupt for Exynos3250 SoCChanwoo Choi
This patch fixes wrong hwirq of RTC irq for Exynos3250 SoC. When entering suspend state, 'enable_irq_wake fail' happen because of the mismatch of RTC hwirq. [ 429.200937] Freezing user space processes ... (elapsed 0.002 seconds) done. [ 429.203383] Freezing remaining freezable tasks ... (elapsed 0.000 seconds) done. [ 429.209914] Suspending console(s) (use no_console_suspend to debug) [ 429.370685] wake enabled for irq 65 [ 429.370837] wake enabled for irq 64 [ 429.370868] wake enabled for irq 79 ... [ 429.372120] s3c-rtc 10070000.rtc: enable_irq_wake failed Fixes: a4f582f5c5fe3 (ARM: EXYNOS: Add exynos3250 suspend-to-ram support) Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com> Acked-by: Kyungmin Park <kyungmin.park@samsung.com> Reviewed-by: Krzysztof Kozlowski <k.kozlowski@samsung.com> Signed-off-by: Kukjin Kim <kgene@kernel.org>
2015-02-27ARM: EXYNOS: Don't use LDREX and STREX after disabling cache coherencyKrzysztof Kozlowski
During CPU shutdown the exynos_cpu_power_down() is called after disabling cache coherency and it uses LDREX and STREX instructions (by calling of_machine_is_compatible() -> kobject_get() -> kref_get()). The LDREX and STREX should not be used after disabling the cache coherency so just use soc_is_exynos(). Fixes: adc548d77c22 ("ARM: EXYNOS: Use MCPM call-backs to support S2R on exynos5420") Reported-by: Stephen Boyd <sboyd@codeaurora.org> Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com> Cc: <stable@vger.kernel.org> Reviewed-by: Stephen Boyd <sboyd@codeaurora.org> Signed-off-by: Kukjin Kim <kgene@kernel.org>
2015-02-26sunrpc: integer underflow in rsc_parse()Dan Carpenter
If we call groups_alloc() with invalid values then it's might lead to memory corruption. For example, with a negative value then we might not allocate enough for sizeof(struct group_info). (We're doing this in the caller for consistency with other callers of groups_alloc(). The other alternative might be to move the check out of all the callers into groups_alloc().) Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Reviewed-by: Simo Sorce <simo@redhat.com> Signed-off-by: J. Bruce Fields <bfields@redhat.com>
2015-02-26nfsd: fix clp->cl_revoked list deletion causing softlock in nfsdAndrew Elble
commit 2d4a532d385f ("nfsd: ensure that clp->cl_revoked list is protected by clp->cl_lock") removed the use of the reaplist to clean out clp->cl_revoked. It failed to change list_entry() to walk clp->cl_revoked.next instead of reaplist.next Fixes: 2d4a532d385f ("nfsd: ensure that clp->cl_revoked list is protected by clp->cl_lock") Cc: stable@vger.kernel.org Reported-by: Eric Meddaugh <etmsys@rit.edu> Tested-by: Eric Meddaugh <etmsys@rit.edu> Signed-off-by: Andrew Elble <aweits@rit.edu> Reviewed-by: Jeff Layton <jeff.layton@primarydata.com> Signed-off-by: J. Bruce Fields <bfields@redhat.com>
2015-02-27ARM: dts: add display power domain for exynos5250Andrzej Hajda
The patch adds domain definition and references to it in appropriate devices. Signed-off-by: Andrzej Hajda <a.hajda@samsung.com> [mszyprow: rebased onto generic power domains dt bindings] Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com> Tested-by: Javier Martinez Canillas <javier.martinez@collabora.co.uk> Reviewed-by: Javier Martinez Canillas <javier.martinez@collabora.co.uk> Signed-off-by: Kukjin Kim <kgene@kernel.org>
2015-02-27ARM: dts: add 'hdmi' clock to mixer nodes for exynos5250 and exynos5420Marek Szyprowski
Mixed block needs to control hdmi clock to properly perform power on/off operation, so add 'hdmi' clock also to mixer nodes. Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com> Signed-off-by: Kukjin Kim <kgene@kernel.org>
2015-02-27ARM: dts: enable hdmi support for exynos4210-universal_c210Tomasz Stanislawski
This patch adds configuration of hw modules required to enable HDMI support on Universal C210 board. Signed-off-by: Tomasz Stanislawski <t.stanislaws@samsung.com> Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com> Signed-off-by: Kukjin Kim <kgene@kernel.org>
2015-02-27ARM: dts: enable hdmi support for exynos4412-odroid-commonMarek Szyprowski
This patch adds nodes specific to Exynos4412 based Odroid X/X2/U2/U3 boards required for enabling HDMI display. Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com> Signed-off-by: Kukjin Kim <kgene@kernel.org>
2015-02-27ARM: dts: add dependency between TV and LCD0 power domains for exynos4Marek Szyprowski
TV Mixer needs both TV and LCD0 domains enabled to be fully operational. This dependency is modelled by making TV power domains a sub-domain of LCD0 power domain. Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com> Signed-off-by: Kukjin Kim <kgene@kernel.org>
2015-02-27ARM: dts: add hdmi related nodes for exynos4 SoCsMarek Szyprowski
This patch adds entries for HDMI, Mixer and i2c with hdmi-phy modules found in Exynos 4210 and 4x12 SoCs. Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com> Signed-off-by: Kukjin Kim <kgene@kernel.org>
2015-02-27ARM: EXYNOS: add support for sub-power domainsMarek Szyprowski
This patch adds support for making one power domain a sub-domain of other domain. This is useful for modeling power dependences for devices like TV Mixer or Camera ISP, which needs to have more than one power domain enabled to be operational. Based on previous work by Amit Daniel Kachhap <amit.daniel@samsung.com>. Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com> Reviewed-by: Ulf Hansson <ulf.hansson@linaro.org> Signed-off-by: Kukjin Kim <kgene@kernel.org>
2015-02-27dt-bindings: document a note about power domain subdomainsMarek Szyprowski
This patch adds a note on defining subdomains to generic PM domain binding documentation to let power domain providers use common approach for defining power domain hierarchy. Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com> Acked-by: Geert Uytterhoeven <geert+renesas@glider.be> Reviewed-by: Ulf Hansson <ulf.hansson@linaro.org> Signed-off-by: Kukjin Kim <kgene@kernel.org>
2015-02-27ARM: dts: Provide dt bindings identical for Exynos TMULukasz Majewski
Presented device tree bindings provide data already hardcoded in the exynos_tmu_data.c file. After this commit, it should be possible to reuse common thermal core framework in Exynos SoCs. Signed-off-by: Lukasz Majewski <l.majewski@samsung.com> Acked-by: Eduardo Valentin <edubezval@gmail.com> Signed-off-by: Kukjin Kim <kgene@kernel.org>
2015-02-27ARM: dts: Trip points and sensor configuration data for exynos5440Lukasz Majewski
This commit provides information about Exynos5440 device configuration. Previously this information was available in exynos_tmu_data.c file. Now it is available in the device tree. Such approach allows reusing some common code for thermal. Signed-off-by: Lukasz Majewski <l.majewski@samsung.com> Acked-by: Eduardo Valentin <edubezval@gmail.com> Signed-off-by: Kukjin Kim <kgene@kernel.org>
2015-02-27ARM: dts: define default thermal-zones for exynos4Lukasz Majewski
Trip points corresponding to the one defined in the exynos_tmu_data.c for Exynos4 have been included. This thermal-zones attribute is afterwards reused for Exynos4210, Exynos4412 and Exynos5250. Signed-off-by: Lukasz Majewski <l.majewski@samsung.com> Acked-by: Eduardo Valentin <edubezval@gmail.com> Signed-off-by: Kukjin Kim <kgene@kernel.org>
2015-02-27ARM: dts: default trip points definition for exynos5420Lukasz Majewski
This code groups in one place default settings of trip points. It is used in SoCs with multiple instances of TMU sensor. Separate device tree file prevents from multiple copying of the same data. Signed-off-by: Lukasz Majewski <l.majewski@samsung.com> Acked-by: Eduardo Valentin <edubezval@gmail.com> Signed-off-by: Kukjin Kim <kgene@kernel.org>
2015-02-27ARM: dts: add TMU default definitions for exynos4412Lukasz Majewski
Exynos 4 and 5 family of SoCs uses almost identical TMU sensor to measure the on chip temperature. For this reason it is possible to group TMU configuration parameters in one dts file. Signed-off-by: Lukasz Majewski <l.majewski@samsung.com> Acked-by: Eduardo Valentin <edubezval@gmail.com> Signed-off-by: Kukjin Kim <kgene@kernel.org>
2015-02-27ARM: dts: Adding CPU cooling binding for Exynos SoCsLukasz Majewski
Presented patch aims to move data necessary for correct CPU cooling device configuration from exynos_tmu_data.c to device tree. Signed-off-by: Lukasz Majewski <l.majewski@samsung.com> Acked-by: Eduardo Valentin <edubezval@gmail.com> Signed-off-by: Kukjin Kim <kgene@kernel.org>
2015-02-27ARM: dts: Enable TMU for exynos4412-odriod-commonLukasz Majewski
This commit enables TMU IP block on the Exynos4412 Odroid based devices such as Odroid U3. Signed-off-by: Lukasz Majewski <l.majewski@samsung.com> Acked-by: Eduardo Valentin <edubezval@gmail.com> Signed-off-by: Kukjin Kim <kgene@kernel.org>
2015-02-27ARM: dts: Add LDO10 for TMU for exynos4412-odroid-commonLukasz Majewski
This patch adds LDO10 regulator node for TMU. Signed-off-by: Lukasz Majewski <l.majewski@samsung.com> Acked-by: Eduardo Valentin <edubezval@gmail.com> Signed-off-by: Kukjin Kim <kgene@kernel.org>
2015-02-27ARM: dts: Enable TMU for exynos4210-tratsLukasz Majewski
The thermal IP block (Thermal Management Unit) called TMU has been enabled in this device. Signed-off-by: Lukasz Majewski <l.majewski@samsung.com> Acked-by: Eduardo Valentin <edubezval@gmail.com> Signed-off-by: Kukjin Kim <kgene@kernel.org>
2015-02-26mac80211: Send EAPOL frames at lowest rateJouni Malinen
The current minstrel_ht rate control behavior is somewhat optimistic in trying to find optimum TX rate. While this is usually fine for normal Data frames, there are cases where a more conservative set of retry parameters would be beneficial to make the connection more robust. EAPOL frames are critical to the authentication and especially the EAPOL-Key message 4/4 (the last message in the 4-way handshake) is important to get through to the AP. If that message is lost, the only recovery mechanism in many cases is to reassociate with the AP and start from scratch. This can often be avoided by trying to send the frame with more conservative rate and/or with more link layer retries. In most cases, minstrel_ht is currently using the initial EAPOL-Key frames for probing higher rates and this results in only five link layer transmission attempts (one at high(ish) MCS and four at MCS0). While this works with most APs, it looks like there are some deployed APs that may have issues with the EAPOL frames using HT MCS immediately after association. Similarly, there may be issues in cases where the signal strength or radio environment is not good enough to be able to get frames through even at couple of MCS 0 tries. The best approach for this would likely to be to reduce the TX rate for the last rate (3rd rate parameter in the set) to a low basic rate (say, 6 Mbps on 5 GHz and 2 or 5.5 Mbps on 2.4 GHz), but doing that cleanly requires some more effort. For now, we can start with a simple one-liner that forces the minimum rate to be used for EAPOL frames similarly how the TX rate is selected for the IEEE 802.11 Management frames. This does result in a small extra latency added to the cases where the AP would be able to receive the higher rate, but taken into account how small number of EAPOL frames are used, this is likely to be insignificant. A future optimization in the minstrel_ht design can also allow this patch to be reverted to get back to the more optimized initial TX rate. It should also be noted that many drivers that do not use minstrel as the rate control algorithm are already doing similar workarounds by forcing the lowest TX rate to be used for EAPOL frames. Cc: stable@vger.kernel.org Reported-by: Linus Torvalds <torvalds@linux-foundation.org> Tested-by: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2015-02-26Merge tag 'sound-4.0-rc2' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound Pull sound fixes from Takashi Iwai: "Most of changes in this pull request are about the fixes of crash of FireWire drivers at hot-unplugging. In addition, there are a few HD-audio fixes (removal of wrong static, a pin quirk for an ASUS mobo, a regression fix for runtime PM on Panther Point) and a long-standing (but fairly minor) bug of PCM core" * tag 'sound-4.0-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound: ALSA: hda - Disable runtime PM for Panther Point again ALSA: hda: controller code - do not export static functions ALSA: pcm: Don't leave PREPARED state after draining ALSA: fireworks/bebob/dice/oxfw: make it possible to shutdown safely ALSA: fireworks/bebob/dice/oxfw: allow stream destructor after releasing runtime ALSA: firewire-lib: remove reference counting ALSA: fireworks/bebob/dice/oxfw: add reference-counting for FireWire unit ALSA: hda - Add pin configs for ASUS mobo with IDT 92HD73XX codec ALSA: firewire-lib: fix an unexpected byte sequence for micro sign
2015-02-26arm64: Fix text patching logic when using fixmapMarc Zyngier
Patch 2f896d586610 ("arm64: use fixmap for text patching") changed the way we patch the kernel text, using a fixmap when the kernel or modules are flagged as read only. Unfortunately, a flaw in the logic makes it fall over when patching modules without CONFIG_DEBUG_SET_MODULE_RONX enabled: [...] [ 32.032636] Call trace: [ 32.032716] [<fffffe00003da0dc>] __copy_to_user+0x2c/0x60 [ 32.032837] [<fffffe0000099f08>] __aarch64_insn_write+0x94/0xf8 [ 32.033027] [<fffffe000009a0a0>] aarch64_insn_patch_text_nosync+0x18/0x58 [ 32.033200] [<fffffe000009c3ec>] ftrace_modify_code+0x58/0x84 [ 32.033363] [<fffffe000009c4e4>] ftrace_make_nop+0x3c/0x58 [ 32.033532] [<fffffe0000164420>] ftrace_process_locs+0x3d0/0x5c8 [ 32.033709] [<fffffe00001661cc>] ftrace_module_init+0x28/0x34 [ 32.033882] [<fffffe0000135148>] load_module+0xbb8/0xfc4 [ 32.034044] [<fffffe0000135714>] SyS_finit_module+0x94/0xc4 [...] This is triggered by the use of virt_to_page() on a module address, which ends to pointing to Nowhereland if you're lucky, or corrupt your precious data if not. This patch fixes the logic by mimicking what is done on arm: - If we're patching a module and CONFIG_DEBUG_SET_MODULE_RONX is set, use vmalloc_to_page(). - If we're patching the kernel and CONFIG_DEBUG_RODATA is set, use virt_to_page(). - Otherwise, use the provided address, as we can write to it directly. Tested on 4.0-rc1 as a KVM guest. Reported-by: Richard W.M. Jones <rjones@redhat.com> Reviewed-by: Kees Cook <keescook@chromium.org> Acked-by: Mark Rutland <mark.rutland@arm.com> Acked-by: Laura Abbott <lauraa@codeaurora.org> Tested-by: Richard W.M. Jones <rjones@redhat.com> Cc: Will Deacon <will.deacon@arm.com> Signed-off-by: Marc Zyngier <marc.zyngier@arm.com> Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
generated by cgit (git 2.34.1) at 2025-09-13 16:23:15 +0000