- 05 Nov, 2016 1 commit
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Joshua Clayton authored
imx-weim should always set address-cells to 2, and size_cells to 1. On imx6, fsl,weim-cs-gpr will always be &gpr Set these common parameters in the dtsi file, rather than in a downstream dts. Signed-off-by:
Joshua Clayton <stillcompiling@gmail.com> Reviewed-by:
Fabio Estevam <fabio.estevam@nxp.com> Signed-off-by:
Shawn Guo <shawnguo@kernel.org>
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- 02 Nov, 2016 6 commits
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Jagan Teki authored
Fixed code indent tabs in respetcive imx23, imx51, imx53, imx6dl, imx6q and imx6sx dtsi and dts files. Signed-off-by:
Jagan Teki <jagan@openedev.com> Signed-off-by:
Shawn Guo <shawnguo@kernel.org>
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Gary Bisson authored
Therefore aligning the panel nodes name across all platforms. Signed-off-by:
Gary Bisson <gary.bisson@boundarydevices.com> Signed-off-by:
Shawn Guo <shawnguo@kernel.org>
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Gary Bisson authored
Therefore aligning the panel nodes name across all platforms. Also removing the bt_rfkill node since the mainline rfkill-gpio driver doesn't support device trees. Signed-off-by:
Gary Bisson <gary.bisson@boundarydevices.com> Signed-off-by:
Shawn Guo <shawnguo@kernel.org>
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Gary Bisson authored
Also aligning the panel nodes name across all platforms. Signed-off-by:
Gary Bisson <gary.bisson@boundarydevices.com> Signed-off-by:
Shawn Guo <shawnguo@kernel.org>
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Gary Bisson authored
Also aligning the panel nodes name across all platforms. Signed-off-by:
Gary Bisson <gary.bisson@boundarydevices.com> Signed-off-by:
Shawn Guo <shawnguo@kernel.org>
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Gary Bisson authored
SoM based on i.MX6 Quad with 1GB of DDR3. https://boundarydevices.com/product/nit6x-som-v2/Signed-off-by:
Gary Bisson <gary.bisson@boundarydevices.com> Signed-off-by:
Shawn Guo <shawnguo@kernel.org>
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- 01 Nov, 2016 4 commits
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Jagan Teki authored
Add FEC support for Engicam i.CoreM6 dql modules. Observed similar 'eth0: link is not ready' issue which was discussed in [1] due rmii mode with external ref_clk, so added clock node along with the properties mentioned by Shawn in [2] FEC link log: ------------ $ ifconfig eth0 up [ 27.905187] SMSC LAN8710/LAN8720 2188000.ethernet:00: attached PHY driver [SMSC LAN8710/LAN8720] (mii_bus:phy_addr=2188000.ethernet:00, irq=-1) [ 27.918982] IPv6: ADDRCONF(NETDEV_UP): eth0: link is not ready [1] https://patchwork.kernel.org/patch/3491061/ [2] https://patchwork.kernel.org/patch/3490511/ Cc: Sascha Hauer <kernel@pengutronix.de> Cc: Fabio Estevam <fabio.estevam@nxp.com> Cc: Matteo Lisi <matteo.lisi@engicam.com> Cc: Michael Trimarchi <michael@amarulasolutions.com> Signed-off-by:
Jagan Teki <jagan@amarulasolutions.com> Signed-off-by:
Shawn Guo <shawnguo@kernel.org>
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Jagan Teki authored
i.CoreM6 DualLite/Solo modules are system on module solutions manufactured by Engicam with following characteristics: CPU NXP i.MX6 DL, 800MHz RAM 1GB, 32, 64 bit, DDR3-800/1066 NAND SLC,512MB Power supply Single 5V MAX LCD RES FULLHD and more info at http://www.engicam.com/en/products/embedded/som/sodimm/i-core-m6s-dl-d-q Cc: Sascha Hauer <kernel@pengutronix.de> Cc: Fabio Estevam <fabio.estevam@nxp.com> Cc: Matteo Lisi <matteo.lisi@engicam.com> Cc: Michael Trimarchi <michael@amarulasolutions.com> Signed-off-by:
Jagan Teki <jagan@amarulasolutions.com> Signed-off-by:
Shawn Guo <shawnguo@kernel.org>
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Jagan Teki authored
i.CoreM6 Quad/Dual modules are system on module solutions manufactured by Engicam with following characteristics: CPU NXP i.MX6 DQ, 800MHz RAM 1GB, 32, 64 bit, DDR3-800/1066 NAND SLC,512MB Power supply Single 5V MAX LCD RES FULLHD and more info at http://www.engicam.com/en/products/embedded/som/sodimm/i-core-m6s-dl-d-q Cc: Sascha Hauer <kernel@pengutronix.de> Cc: Fabio Estevam <fabio.estevam@nxp.com> Cc: Matteo Lisi <matteo.lisi@engicam.com> Cc: Michael Trimarchi <michael@amarulasolutions.com> Signed-off-by:
Jagan Teki <jagan@amarulasolutions.com> Signed-off-by:
Shawn Guo <shawnguo@kernel.org>
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Peter Chen authored
With commit 851ce932 ("usb: chipidea: otg: don't wait vbus drops below BSV when starts host"), the driver can support enabling vbus output without software control, so this board (control vbus output through ID pin) can support dual-role now. Signed-off-by:
Peter Chen <peter.chen@nxp.com> Reviewed-by:
Fabio Estevam <fabio.estevam@nxp.com> Signed-off-by:
Shawn Guo <shawnguo@kernel.org>
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- 24 Oct, 2016 12 commits
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Marcin Niestroj authored
liteBoard is a development board which uses liteSOM as its base. Hardware specification: * liteSOM (i.MX6UL, DRAM, eMMC) * Ethernet PHY (id 0) * USB host (usb_otg1) * MicroSD slot (uSDHC1) Signed-off-by:
Marcin Niestroj <m.niestroj@grinn-global.com> Reviewed-by:
Fabio Estevam <fabio.estevam@nxp.com> Signed-off-by:
Shawn Guo <shawnguo@kernel.org>
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Marcin Niestroj authored
This is a SOM (System on Module), so it will be part of another boards. Hence, this is a "dtsi" file that will be included from another device tree files. Hardware specification: * Freescale i.MX6UL SoC * up to 512 MB RAM * eMMC on uSDHC2 Signed-off-by:
Marcin Niestroj <m.niestroj@grinn-global.com> Reviewed-by:
Fabio Estevam <fabio.estevam@nxp.com> Signed-off-by:
Shawn Guo <shawnguo@kernel.org>
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Marek Vasut authored
Enable PWM1, otherwise the backlight cannot work. Signed-off-by:
Marek Vasut <marex@denx.de> Cc: Fabio Estevam <fabio.estevam@nxp.com> Signed-off-by:
Shawn Guo <shawnguo@kernel.org>
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Andreas Färber authored
Add initial device trees for UDOO Neo Basic, Extended and Full boards: * Serial console is enabled, other serial ports are prepared. * I2C based PMIC is enabled. * Ethernet is enabled for Basic and Full. * SDHC is enabled, with the SDIO_PWR GPIO modeled as a regulator. * Both user LEDs are enabled, with the orange one reserved for the M4 and with the SD card as default trigger for the red LED. The decision on a board compatible string is deferred to later. Cc: Ettore Chimenti <ettore.chimenti@udoo.org> Signed-off-by:
Andreas Färber <afaerber@suse.de> Signed-off-by:
Shawn Guo <shawnguo@kernel.org>
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Hongtao Jia authored
Also add nodes and properties for thermal management support. Signed-off-by:
Jia Hongtao <hongtao.jia@nxp.com> Signed-off-by:
Shawn Guo <shawnguo@kernel.org>
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Sanchayan Maity authored
Enable DMA for DSPI on Vybrid. Signed-off-by:
Sanchayan Maity <maitysanchayan@gmail.com> Signed-off-by:
Shawn Guo <shawnguo@kernel.org>
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Marek Vasut authored
The LCDIF interrupt should be triggered by the rising edge of the IRQ line because we only want the interrupt to trigger once per each frame. It seems the LCDIF IRQ line cannot be explicitly de-asserted by software, so the previous behavior before this patch, where the interrupt was triggered by level-high status of the IRQ line, caused the interrupt to fire again immediatelly after it was handled, which caused the system to lock up due to the high rate of interrupts. Signed-off-by:
Marek Vasut <marex@denx.de> Cc: Lucas Stach <l.stach@pengutronix.de> Cc: Fabio Estevam <fabio.estevam@nxp.com> Signed-off-by:
Shawn Guo <shawnguo@kernel.org>
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Andrey Smirnov authored
Add node corresponding to OCOTP IP block. Signed-off-by:
Andrey Smirnov <andrew.smirnov@gmail.com> Signed-off-by:
Shawn Guo <shawnguo@kernel.org>
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Andrey Smirnov authored
I2C3 bus was only brought out in revision A1 of the board and revision B1 only brings out 3 I2C busses (I2C0, I2C1 and I2C2). Signed-off-by:
Andrey Smirnov <andrew.smirnov@gmail.com> Reviewed-by:
Andrew Lunn <andrew@lunn.ch> Signed-off-by:
Shawn Guo <shawnguo@kernel.org>
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Jagan Teki authored
Fixed error in trailing whitespace in wandboard-rev1 dtsi. Signed-off-by:
Jagan Teki <jteki@openedev.com> Signed-off-by:
Shawn Guo <shawnguo@kernel.org>
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Jagan Teki authored
Fixed code indent tabs in respetcive imx6qdl dtsi files. Signed-off-by:
Jagan Teki <jteki@openedev.com> Signed-off-by:
Shawn Guo <shawnguo@kernel.org>
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Jagan Teki authored
Fixed no space before tabs warnings in respetcive imx6qdl dtsi files. Signed-off-by:
Jagan Teki <jteki@openedev.com> Signed-off-by:
Shawn Guo <shawnguo@kernel.org>
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- 23 Oct, 2016 1 commit
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Jaret Cantu authored
Calibrate the USB PHY TX settings to pass the eye diagram signal integrity test. The settings are taken from the i.MX6 reference manual's recommended configuration for USB certification (66.2.6). Signed-off-by:
Jaret Cantu <jaret.cantu@timesys.com> Signed-off-by:
Shawn Guo <shawnguo@kernel.org>
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- 22 Oct, 2016 3 commits
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Sanchayan Maity authored
Use enable-gpios property of PWM backlight driver for backlight control. Signed-off-by:
Sanchayan Maity <maitysanchayan@gmail.com> Signed-off-by:
Shawn Guo <shawnguo@kernel.org>
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Sanchayan Maity authored
Remove use of pwm-leds and use the standard /sys/class/pwm interface from PWM subsystem. Signed-off-by:
Sanchayan Maity <maitysanchayan@gmail.com> Acked-by:
Marcel Ziswiler <marcel.ziswiler@toradex.com> Signed-off-by:
Shawn Guo <shawnguo@kernel.org>
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Sanchayan Maity authored
Add support for Toradex Colibri iMX6 module. Signed-off-by:
Sanchayan Maity <maitysanchayan@gmail.com> Acked-by:
Marcel Ziswiler <marcel.ziswiler@toradex.com> Signed-off-by:
Shawn Guo <shawnguo@kernel.org>
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- 15 Oct, 2016 13 commits
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Linus Torvalds authored
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git://github.com/luisbg/linux-befsLinus Torvalds authored
Pull befs fixes from Luis de Bethencourt: "I recently took maintainership of the befs file system [0]. This is the first time I send you a git pull request, so please let me know if all the below is OK. Salah Triki and myself have been cleaning the code and fixing a few small bugs. Sorry I couldn't send this sooner in the merge window, I was waiting to have my GPG key signed by kernel members at ELCE in Berlin a few days ago." [0] https://lkml.org/lkml/2016/7/27/502 * tag 'befs-v4.9-rc1' of git://github.com/luisbg/linux-befs: (39 commits) befs: befs: fix style issues in datastream.c befs: improve documentation in datastream.c befs: fix typos in datastream.c befs: fix typos in btree.c befs: fix style issues in super.c befs: fix comment style befs: add check for ag_shift in superblock befs: dump inode_size superblock information befs: remove unnecessary initialization befs: fix typo in befs_sb_info befs: add flags field to validate superblock state befs: fix typo in befs_find_key befs: remove unused BEFS_BT_PARMATCH fs: befs: remove ret variable fs: befs: remove in vain variable assignment fs: befs: remove unnecessary *befs_sb variable fs: befs: remove useless initialization to zero fs: befs: remove in vain variable assignment fs: befs: Insert NULL inode to dentry fs: befs: Remove useless calls to brelse in befs_find_brun_dblindirect ...
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git://git.kernel.org/pub/scm/linux/kernel/git/kees/linuxLinus Torvalds authored
Pull gcc plugins update from Kees Cook: "This adds a new gcc plugin named "latent_entropy". It is designed to extract as much possible uncertainty from a running system at boot time as possible, hoping to capitalize on any possible variation in CPU operation (due to runtime data differences, hardware differences, SMP ordering, thermal timing variation, cache behavior, etc). At the very least, this plugin is a much more comprehensive example for how to manipulate kernel code using the gcc plugin internals" * tag 'gcc-plugins-v4.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux: latent_entropy: Mark functions with __latent_entropy gcc-plugins: Add latent_entropy plugin
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git://git.linux-mips.org/pub/scm/ralf/upstream-linusLinus Torvalds authored
Pull MIPS updates from Ralf Baechle: "This is the main MIPS pull request for 4.9: MIPS core arch code: - traps: 64bit kernels should read CP0_EBase 64bit - traps: Convert ebase to KSEG0 - c-r4k: Drop bc_wback_inv() from icache flush - c-r4k: Split user/kernel flush_icache_range() - cacheflush: Use __flush_icache_user_range() - uprobes: Flush icache via kernel address - KVM: Use __local_flush_icache_user_range() - c-r4k: Fix flush_icache_range() for EVA - Fix -mabi=64 build of vdso.lds - VDSO: Drop duplicated -I*/-E* aflags - tracing: move insn_has_delay_slot to a shared header - tracing: disable uprobe/kprobe on compact branch instructions - ptrace: Fix regs_return_value for kernel context - Squash lines for simple wrapper functions - Move identification of VP(E) into proc.c from smp-mt.c - Add definitions of SYNC barrierstype values - traps: Ensure full EBase is written - tlb-r4k: If there are wired entries, don't use TLBINVF - Sanitise coherentio semantics - dma-default: Don't check hw_coherentio if device is non-coherent - Support per-device DMA coherence - Adjust MIPS64 CAC_BASE to reflect Config.K0 - Support generating Flattened Image Trees (.itb) - generic: Introduce generic DT-based board support - generic: Convert SEAD-3 to a generic board - Enable hardened usercopy - Don't specify STACKPROTECTOR in defconfigs Octeon: - Delete dead code and files across the platform. - Change to use all memory into use by default. - Rename upper case variables in setup code to lowercase. - Delete legacy hack for broken bootloaders. - Leave maintaining the link state to the actual ethernet/PHY drivers. - Add DTS for D-Link DSR-500N. - Fix PCI interrupt routing on D-Link DSR-500N. Pistachio: - Remove ANDROID_TIMED_OUTPUT from defconfig TX39xx: - Move GPIO setup from .mem_setup() to .arch_init() - Convert to Common Clock Framework TX49xx: - Move GPIO setup from .mem_setup() to .arch_init() - Convert to Common Clock Framework txx9wdt: - Add missing clock (un)prepare calls for CCF BMIPS: - Add PW, GPIO SDHCI and NAND device node names - Support APPENDED_DTB - Add missing bcm97435svmb to DT_NONE - Rename bcm96358nb4ser to bcm6358-neufbox4-sercom - Add DT examples for BCM63268, BCM3368 and BCM6362 - Add support for BCM3368 and BCM6362 PCI - Reduce stack frame usage - Use struct list_head lists - Support for CONFIG_PCI_DOMAINS_GENERIC - Make pcibios_set_cache_line_size an initcall - Inline pcibios_assign_all_busses - Split pci.c into pci.c & pci-legacy.c - Introduce CONFIG_PCI_DRIVERS_LEGACY - Support generic drivers CPC - Convert bare 'unsigned' to 'unsigned int' - Avoid lock when MIPS CM >= 3 is present GIC: - Delete unused file smp-gic.c mt7620: - Delete unnecessary assignment for the field "owner" from PCI BCM63xx: - Let clk_disable() return immediately if clk is NULL pm-cps: - Change FSB workaround to CPU blacklist - Update comments on barrier instructions - Use MIPS standard lightweight ordering barrier - Use MIPS standard completion barrier - Remove selection of sync types - Add MIPSr6 CPU support - Support CM3 changes to Coherence Enable Register SMP: - Wrap call to mips_cpc_lock_other in mips_cm_lock_other - Introduce mechanism for freeing and allocating IPIs cpuidle: - cpuidle-cps: Enable use with MIPSr6 CPUs. SEAD3: - Rewrite to use DT and generic kernel feature. USB: - host: ehci-sead3: Remove SEAD-3 EHCI code FBDEV: - cobalt_lcdfb: Drop SEAD3 support dt-bindings: - Document a binding for simple ASCII LCDs auxdisplay: - img-ascii-lcd: driver for simple ASCII LCD displays irqchip i8259: - i8259: Add domain before mapping parent irq - i8259: Allow platforms to override poll function - i8259: Remove unused i8259A_irq_pending Malta: - Rewrite to use DT of/platform: - Probe "isa" busses by default CM: - Print CM error reports upon bus errors Module: - Migrate exception table users off module.h and onto extable.h - Make various drivers explicitly non-modular: - Audit and remove any unnecessary uses of module.h mailmap: - Canonicalize to Qais' current email address. Documentation: - MIPS supports HAVE_REGS_AND_STACK_ACCESS_API Loongson1C: - Add CPU support for Loongson1C - Add board support - Add defconfig - Add RTC support for Loongson1C board All this except one Documentation fix has sat in linux-next and has survived Imagination's automated build test system" * 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus: (127 commits) Documentation: MIPS supports HAVE_REGS_AND_STACK_ACCESS_API MIPS: ptrace: Fix regs_return_value for kernel context MIPS: VDSO: Drop duplicated -I*/-E* aflags MIPS: Fix -mabi=64 build of vdso.lds MIPS: Enable hardened usercopy MIPS: generic: Convert SEAD-3 to a generic board MIPS: generic: Introduce generic DT-based board support MIPS: Support generating Flattened Image Trees (.itb) MIPS: Adjust MIPS64 CAC_BASE to reflect Config.K0 MIPS: Print CM error reports upon bus errors MIPS: Support per-device DMA coherence MIPS: dma-default: Don't check hw_coherentio if device is non-coherent MIPS: Sanitise coherentio semantics MIPS: PCI: Support generic drivers MIPS: PCI: Introduce CONFIG_PCI_DRIVERS_LEGACY MIPS: PCI: Split pci.c into pci.c & pci-legacy.c MIPS: PCI: Inline pcibios_assign_all_busses MIPS: PCI: Make pcibios_set_cache_line_size an initcall MIPS: PCI: Support for CONFIG_PCI_DOMAINS_GENERIC MIPS: PCI: Use struct list_head lists ...
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git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/soundLinus Torvalds authored
Pull sound fixes from Takashi Iwai: "Just a few trivial small fixes" * tag 'sound-fix-4.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound: ALSA: line6: fix a crash in line6_hwdep_write() ALSA: seq: fix passing wrong pointer in function call of compatibility layer ALSA: hda - Fix a failure of micmute led when having multi adcs ALSA: line6: Fix POD X3 Live audio input
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git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfsLinus Torvalds authored
Pull more misc uaccess and vfs updates from Al Viro: "The rest of the stuff from -next (more uaccess work) + assorted fixes" * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: score: traps: Add missing include file to fix build error fs/super.c: don't fool lockdep in freeze_super() and thaw_super() paths fs/super.c: fix race between freeze_super() and thaw_super() overlayfs: Fix setting IOP_XATTR flag iov_iter: kernel-doc import_iovec() and rw_copy_check_uvector() blackfin: no access_ok() for __copy_{to,from}_user() arm64: don't zero in __copy_from_user{,_inatomic} arm: don't zero in __copy_from_user_inatomic()/__copy_from_user() arc: don't leak bits of kernel stack into coredump alpha: get rid of tail-zeroing in __copy_user()
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git://git.samba.org/sfrench/cifs-2.6Linus Torvalds authored
Pull cifs fixes from Steve French: "Including: - nine bug fixes for stable. Some of these we found at the recent two weeks of SMB3 test events/plugfests. - significant improvements in reconnection (e.g. if server or network crashes) especially when mounted with "persistenthandles" or to server which advertises Continuous Availability on the share. - a new mount option "idsfromsid" which improves POSIX compatibility in some cases (when winbind not configured e.g.) by better (and faster) fetching uid/gid from acl (when "cifsacl" mount option is enabled). NB: we are almost complete work on "cifsacl" (querying mode/uid/gid from ACL) for SMB3, but SMB3 support for cifsacl is not included in this set. - improved handling for SMB3 "credits" (even if server is buggy) Still working on two sets of changes: - cifsacl enablement for SMB3 - cleanup of RFC1001 length calculation (so we can handle encryption and multichannel and RDMA) And a couple of new bugs were reported recently (unrelated to above) so will probably have another merge request next week" * 'for-next' of git://git.samba.org/sfrench/cifs-2.6: (21 commits) CIFS: Retrieve uid and gid from special sid if enabled CIFS: Add new mount option to set owner uid and gid from special sids in acl CIFS: Reset read oplock to NONE if we have mandatory locks after reopen CIFS: Fix persistent handles re-opening on reconnect SMB2: Separate RawNTLMSSP authentication from SMB2_sess_setup SMB2: Separate Kerberos authentication from SMB2_sess_setup Expose cifs module parameters in sysfs Cleanup missing frees on some ioctls Enable previous version support Do not send SMB3 SET_INFO request if nothing is changing SMB3: Add mount parameter to allow user to override max credits fs/cifs: reopen persistent handles on reconnect Clarify locking of cifs file and tcon structures and make more granular Fix regression which breaks DFS mounting fs/cifs: keep guid when assigning fid to fileinfo SMB3: GUIDs should be constructed as random but valid uuids Set previous session id correctly on SMB3 reconnect cifs: Limit the overall credit acquired Display number of credits available Add way to query creation time of file via cifs xattr ...
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git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfsLinus Torvalds authored
Pull btrfs fixes from Chris Mason: "Some fixes from Omar and Dave Sterba for our new free space tree. This isn't heavily used yet, but as we move toward making it the new default we wanted to nail down an endian bug" * 'for-linus-4.9' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs: btrfs: tests: uninline member definitions in free_space_extent btrfs: tests: constify free space extent specs Btrfs: expand free space tree sanity tests to catch endianness bug Btrfs: fix extent buffer bitmap tests on big-endian systems Btrfs: catch invalid free space trees Btrfs: fix mount -o clear_cache,space_cache=v2 Btrfs: fix free space tree bitmaps on big-endian systems
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Al Viro authored
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Guenter Roeck authored
score images fail to build as follows. arch/score/kernel/traps.c: In function 'show_stack': arch/score/kernel/traps.c:55:3: error: implicit declaration of function '__get_user' __get_user() is declared in asm/uaccess.h, which was previously included through asm/module.h. Cc: Al Viro <viro@zeniv.linux.org.uk> Fixes: 88dd4a74 ("score: separate extable.h, switch module.h to it") Signed-off-by:
Guenter Roeck <linux@roeck-us.net> Signed-off-by:
Al Viro <viro@zeniv.linux.org.uk>
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Oleg Nesterov authored
sb_wait_write()->percpu_rwsem_release() fools lockdep to avoid the false-positives. Now that xfs was fixed by Dave's commit dbad7c99 ("xfs: stop holding ILOCK over filldir callbacks") we can remove it and change freeze_super() and thaw_super() to run with s_writers.rw_sem locks held; we add two trivial helpers for that, lockdep_sb_freeze_release() and lockdep_sb_freeze_acquire(). xfstests-dev/check `grep -il freeze tests/*/???` does not trigger any warning from lockdep. Signed-off-by:
Oleg Nesterov <oleg@redhat.com> Signed-off-by:
Al Viro <viro@zeniv.linux.org.uk>
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git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/vfsLinus Torvalds authored
Pull overlayfs updates from Miklos Szeredi: "This update contains fixes to the "use mounter's permission to access underlying layers" area, and miscellaneous other fixes and cleanups. No new features this time" * 'overlayfs-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/vfs: ovl: use vfs_get_link() vfs: add vfs_get_link() helper ovl: use generic_readlink ovl: explain error values when removing acl from workdir ovl: Fix info leak in ovl_lookup_temp() ovl: during copy up, switch to mounter's creds early ovl: lookup: do getxattr with mounter's permission ovl: copy_up_xattr(): use strnlen
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Oleg Nesterov authored
Change thaw_super() to check frozen != SB_FREEZE_COMPLETE rather than frozen == SB_UNFROZEN, otherwise it can race with freeze_super() which drops sb->s_umount after SB_FREEZE_WRITE to preserve the lock ordering. In this case thaw_super() will wrongly call s_op->unfreeze_fs() before it was actually frozen, and call sb_freeze_unlock() which leads to the unbalanced percpu_up_write(). Unfortunately lockdep can't detect this, so this triggers misc BUG_ON()'s in kernel/rcu/sync.c. Reported-and-tested-by:
Nikolay Borisov <kernel@kyup.com> Signed-off-by:
Oleg Nesterov <oleg@redhat.com> Cc: stable@vger.kernel.org Signed-off-by:
Al Viro <viro@zeniv.linux.org.uk>
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