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2016-01-27vfio/noiommu: Don't use iommu_present() to track fake groupsAlex Williamson
Using iommu_present() to determine whether an IOMMU group is real or fake has some problems. First, apparently Power systems don't register an IOMMU on the device bus, so the groups and containers get marked as noiommu and then won't bind to their actual IOMMU driver. Second, I expect we'll run into the same issue as we try to support vGPUs through vfio, since they're likely to emulate this behavior of creating an IOMMU group on a virtual device and then providing a vfio IOMMU backend tailored to the sort of isolation they provide, which won't necessarily be fully compatible with the IOMMU API. The solution here is to use the existing iommudata interface to IOMMU groups, which allows us to easily identify the fake groups we've created for noiommu purposes. The iommudata we set is purely arbitrary since we're only comparing the address, so we use the address of the noiommu switch itself. Reported-by: Alexey Kardashevskiy <aik@ozlabs.ru> Reviewed-by: Alexey Kardashevskiy <aik@ozlabs.ru> Tested-by: Alexey Kardashevskiy <aik@ozlabs.ru> Tested-by: Anatoly Burakov <anatoly.burakov@intel.com> Tested-by: Santosh Shukla <sshukla@mvista.com> Fixes: 03a76b60f8ba ("vfio: Include No-IOMMU mode") Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2016-01-27ARM: wire up copy_file_range() syscallRussell King
Add the copy_file_range() syscall to ARM. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2016-01-27drm/radeon: fix DP audio support for APU with DCE4.1 display engineSlava Grigorev
Properly setup the DFS divider for DP audio for DCE4.1. Signed-off-by: Slava Grigorev <slava.grigorev@amd.com> Reviewed-by: Alex Deucher <alexander.deucher@amd.com> Reviewed-by: Christian König <christian.koenig@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com> Cc: stable@vger.kernel.org
2016-01-27drm/radeon: Add a common function for DFS handlingSlava Grigorev
Move encoding of DFS (digital frequency synthesizer) divider into a separate function and improve calculation precision. Signed-off-by: Slava Grigorev <slava.grigorev@amd.com> Reviewed-by: Alex Deucher <alexander.deucher@amd.com> Reviewed-by: Christian König <christian.koenig@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com> Cc: stable@vger.kernel.org
2016-01-27drm/radeon: cleaned up VCO output settings for DP audioSlava Grigorev
This is preparation for the fixes in the following patches. Signed-off-by: Slava Grigorev <slava.grigorev@amd.com> Reviewed-by: Alex Deucher <alexander.deucher@amd.com> Reviewed-by: Christian König <christian.koenig@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com> Cc: stable@vger.kernel.org
2016-01-27ARM: dts: am57xx: sbc-am57x: correct Eth PHY settingsDmitry Lifshitz
Update Eth PHY settings to make it possible to run both phys at 1Gbps. Signed-off-by: Dmitry Lifshitz <lifshitz@compulab.co.il> Signed-off-by: Tony Lindgren <tony@atomide.com>
2016-01-27ARM: dts: am57xx: cl-som-am57x: fix CPSW EMAC pinmuxDmitry Lifshitz
Fix CPSW EMAC pinmux Signed-off-by: Dmitry Lifshitz <lifshitz@compulab.co.il> Signed-off-by: Tony Lindgren <tony@atomide.com>
2016-01-27ARM: dts: am57xx: sbc-am57x: fix UART3 pinmuxDmitry Lifshitz
Fix UART3 pinmux. Signed-off-by: Dmitry Lifshitz <lifshitz@compulab.co.il> Signed-off-by: Tony Lindgren <tony@atomide.com>
2016-01-27ARM: dts: am57xx: cl-som-am57x: update SPI Flash frequencyDmitry Lifshitz
On-board SPI flash cat act at 48Mhz SPI bus frequency. Update the DT frequency property. Signed-off-by: Dmitry Lifshitz <lifshitz@compulab.co.il> Signed-off-by: Tony Lindgren <tony@atomide.com>
2016-01-27ARM: dts: am57xx: cl-som-am57x: set HOST mode for USB2Dmitry Lifshitz
Setup USB2 to act in "HOST" mode by default. Signed-off-by: Dmitry Lifshitz <lifshitz@compulab.co.il> Signed-off-by: Tony Lindgren <tony@atomide.com>
2016-01-27ARM: dts: am57xx: sbc-am57x: fix SB-SOM EEPROM I2C addressDmitry Lifshitz
Fix SB-SOM EEPROM I2C address Signed-off-by: Dmitry Lifshitz <lifshitz@compulab.co.il> Signed-off-by: Tony Lindgren <tony@atomide.com>
2016-01-27ARM: dts: LogicPD Torpedo: Revert Duplicative EntriesAdam Ford
Revert commit 7cd6ca770d1b ("ARM: dts: Change I2C2 and I2C3 to 400KHz for LogicPD Torpedo DM3730 devkit") It was already done and it is just a duplicate. Signed-off-by: Adam Ford <aford173@gmail.com> Signed-off-by: Tony Lindgren <tony@atomide.com>
2016-01-27ARM: dts: am437x: pixcir_tangoc: use correct flags for irq typesGrygorii Strashko
Now IRQs for Pixcir Tangoc touchscreen are defined using IRQ_TYPE_NONE in am437x-gp-evm.dts and am43x-epos-evm.dts wich do not correspond HW. Hence, update am437x-gp-evm.dts and am43x-epos-evm.dts files and use correct flag IRQ_TYPE_EDGE_FALLING for irq types. While here, remove duplicated irq declaration for pixcir_ts@5c node in am437x-gp-evm.dts. Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com> Signed-off-by: Tony Lindgren <tony@atomide.com>
2016-01-27ARM: dts: am4372: fix irq type for arm twd and global timerGrygorii Strashko
As per ARM documentation PPI(0) ID27 - global timer interrupt is rising-edge sensitive. PPI(2) ID29 - twd interrupt is rising-edge sensitive. and the same is proved by GIC distributor register value GIC_DIST_CONFIG(0xC04) = 0x7DC00000. Hence, set IRQ triggering type to IRQ_TYPE_EDGE_RISING for ARM TWD and Global timers. Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com> Signed-off-by: Tony Lindgren <tony@atomide.com>
2016-01-27drm/amd/powerplay: Update SMU firmware loading for StoneyRex Zhu
Fix firmware init on Stoney when powerplay is enabled. Signed-off-by: Rex Zhu <Rex.Zhu@amd.com> Reviewed-by: Alex Deucher <alexander.deucher@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2016-01-27seccomp: always propagate NO_NEW_PRIVS on tsyncJann Horn
Before this patch, a process with some permissive seccomp filter that was applied by root without NO_NEW_PRIVS was able to add more filters to itself without setting NO_NEW_PRIVS by setting the new filter from a throwaway thread with NO_NEW_PRIVS. Signed-off-by: Jann Horn <jann@thejh.net> Cc: stable@vger.kernel.org Signed-off-by: Kees Cook <keescook@chromium.org>
2016-01-27btrfs: don't use GFP_HIGHMEM for free-space-tree bitmap kzallocChris Mason
This was copied incorrectly from the __vmalloc call. Signed-off-by: Chris Mason <clm@fb.com>
2016-01-27debugobjects: Allow bigger number of early boot objectsChristian Borntraeger
On my bigger s390 systems I always get "Out of memory. ODEBUG disabled". Since the number of objects is needed at compile time, we can not change the size dynamically before the caches etc are available. Doubling the size seems to do the trick. Since it is init data it will be freed anyway, this should be ok. Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com> Link: http://lkml.kernel.org/r/1453905478-13409-1-git-send-email-borntraeger@de.ibm.com Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2016-01-27include/linux/cleancache.h: Clean up codeChen Gang
Let cleancache_fs_enabled() call cleancache_fs_enabled_mapping() directly. Remove redundant variable ret in cleancache_get_page(). Signed-off-by: Chen Gang <gang.chen.5i5j@gmail.com> Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
2016-01-27cleancache: constify cleancache_ops structureJulia Lawall
The cleancache_ops structure is never modified, so declare it as const. Done with the help of Coccinelle. Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr> Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
2016-01-27Merge branch 'dev/fst-followup' of ↵Chris Mason
git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux into for-linus-4.5
2016-01-27btrfs: sysfs: check initialization state before updating featuresDavid Sterba
If the mount phase is not finished, we can't update the sysfs files. Reported-by: Chris Mason <clm@fb.com> Signed-off-by: David Sterba <dsterba@suse.com> Signed-off-by: Chris Mason <clm@fb.com>
2016-01-27irqchip/atmel-aic: Fix wrong bit operation for IRQ priorityMilo Kim
Atmel AIC has common structure for SMR (Source Mode Register). bit[6:5] Interrupt source type bit[2:0] Priority level Other bits are unused. To update new priority value, bit[2:0] should be cleared first and then new priority level can be written. However, aic_common_set_priority() helper clears source type bits instead of priority bits. This patch fixes wrong mask bit operation. Fixes: b1479ebb7720 "irqchip: atmel-aic: Add atmel AIC/AIC5 drivers" Signed-off-by: Milo Kim <milo.kim@ti.com> Acked-by: Boris Brezillon <boris.brezillon@free-electrons.com> Cc: Jason Cooper <jason@lakedaemon.net> Cc: Marc Zyngier <marc.zyngier@arm.com> Cc: Ludovic Desroches <ludovic.desroches@atmel.com> Cc: Nicholas Ferre <nicolas.ferre@atmel.com> Cc: stable@vger.kernel.org #v3.17+ Link: http://lkml.kernel.org/r/1452669592-3401-2-git-send-email-milo.kim@ti.com Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2016-01-27tick/nohz: Set the correct expiry when switching to nohz/lowres modeWanpeng Li
commit 0ff53d096422 sets the next tick interrupt to the last jiffies update, i.e. in the past, because the forward operation is invoked before the set operation. There is no resulting damage (yet), but we get an extra pointless tick interrupt. Revert the order so we get the next tick interrupt in the future. Fixes: commit 0ff53d096422 "tick: sched: Force tick interrupt and get rid of softirq magic" Signed-off-by: Wanpeng Li <wanpeng.li@hotmail.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: stable@vger.kernel.org Link: http://lkml.kernel.org/r/1453893967-3458-1-git-send-email-wanpeng.li@hotmail.com Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2016-01-27ARM: dts: at91: sama5d4 xplained: fix phy0 IRQ typeNicolas Ferre
For phy0 KSZ8081, the type of GPIO IRQ should be "level low" instead of "edge falling". Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com> Fixes: 38153a017896 ("ARM: at91/dt: sama5d4: add dts for sama5d4 xplained board") Cc: <stable@vger.kernel.org> # 4.1+
2016-01-27ARM: dts: at91: sama5d4 xplained: properly mux phy interruptAlexandre Belloni
No interrupt were received from the phy because PIOE 1 may not be properly muxed. It prevented proper link detection, especially since commit 321beec5047a ("net: phy: Use interrupts when available in NOLINK state") disables polling. Cc: <stable@vger.kernel.org> # 4.4 Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com> Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
2016-01-27ARM: dts: at91: sama5d4ek: add phy address and IRQ for macb0Wenyou Yang
On SAMA5D4EK board, the Ethernet doesn't work after resuming from the suspend state. Signed-off-by: Wenyou Yang <wenyou.yang@atmel.com> [nicolas.ferre@atmel.com: adapt to newer kernel] Fixes: 38153a017896 ("ARM: at91/dt: sama5d4: add dts for sama5d4 xplained board") Cc: <stable@vger.kernel.org> # 4.1+ Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
2016-01-27ARM: dts: at91: sama5d2 xplained: add phy address and IRQ for macb0Nicolas Ferre
After 57a38effa598 (net: phy: micrel: disable broadcast for KSZ8081/KSZ8091) the macb0 interface has difficulties to come back from power saving mode if address not explicitly set up. As the micrel phy on the board is actually configured to show up at address 1 we use this explicitly. Adding the phy node and its real address fixes the issue. The phy IRQ and associated pinmux node is also added. Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com> Acked-by: Alexandre Belloni <alexandre.belloni@free-electrons.com> Cc: stable@vger.kernel.org # 4.4+ // manual merge needed
2016-01-27ARM: dts: at91: at91sam9n12ek: fix panel compatible stringAlexandre Belloni
Properly use qiaodian as the vendor prefix for the panel. Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com> Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
2016-01-27ARM: dts: at91: sama5d4: fix instance id of DBGUMohamed Jamsheeth Hajanajubudeen
Change instance id of DBGU to 45. Signed-off-by: Mohamed Jamsheeth Hajanajubudeen <mohamedjamsheeth.hajanajubudeen@atmel.com> Fixes: 7c661394c56c ("ARM: at91: dt: add device tree file for SAMA5D4 SoC") Cc: stable@vger.kernel.org # 3.18+ Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
2016-01-26staging/speakup: Use tty_ldisc_ref() for paste kworkerPeter Hurley
As the function documentation for tty_ldisc_ref_wait() notes, it is only callable from a tty file_operations routine; otherwise there is no guarantee the ref won't be NULL. The key difference with the VT's paste_selection() is that is an ioctl, where __speakup_paste_selection() is completely async kworker, kicked off from interrupt context. Fixes: 28a821c30688 ("Staging: speakup: Update __speakup_paste_selection() tty (ab)usage to match vt") Cc: <stable@vger.kernel.org> Signed-off-by: Peter Hurley <peter@hurleysoftware.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-01-26n_tty: Fix unsafe reference to "other" ldiscPeter Hurley
Although n_tty_check_unthrottle() has a valid ldisc reference (since the tty core gets the ldisc ref in tty_read() before calling the line discipline read() method), it does not have a valid ldisc reference to the "other" pty of a pty pair. Since getting an ldisc reference for tty->link essentially open-codes tty_wakeup(), just replace with the equivalent tty_wakeup(). Cc: <stable@vger.kernel.org> Signed-off-by: Peter Hurley <peter@hurleysoftware.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-01-26tty: Fix unsafe ldisc reference via ioctl(TIOCGETD)Peter Hurley
ioctl(TIOCGETD) retrieves the line discipline id directly from the ldisc because the line discipline id (c_line) in termios is untrustworthy; userspace may have set termios via ioctl(TCSETS*) without actually changing the line discipline via ioctl(TIOCSETD). However, directly accessing the current ldisc via tty->ldisc is unsafe; the ldisc ptr dereferenced may be stale if the line discipline is changing via ioctl(TIOCSETD) or hangup. Wait for the line discipline reference (just like read() or write()) to retrieve the "current" line discipline id. Cc: <stable@vger.kernel.org> Signed-off-by: Peter Hurley <peter@hurleysoftware.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-01-26tty: Retry failed reopen if tty teardown in-progressPeter Hurley
A small window exists where a tty reopen will observe the tty just prior to imminent teardown (tty->count == 0); in this case, open() returns EIO to userspace. Instead, retry the open after checking for signals and yielding; this interruptible retry loop allows teardown to commence and initialize a new tty on retry. Never retry the BSD master pty reopen; there is no guarantee the pty pair teardown is imminent since the slave file descriptors may remain open indefinitely. Signed-off-by: Peter Hurley <peter@hurleysoftware.com> Cc: stable <stable@vger.kernel.org> # 4.4 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-01-26tty: Wait interruptibly for tty lock on reopenPeter Hurley
Allow a signal to interrupt the wait for a tty reopen; eg., if the tty has starting final close and is waiting for the device to drain. Signed-off-by: Peter Hurley <peter@hurleysoftware.com> Cc: stable <stable@vger.kernel.org> # 4.4 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-01-27ALSA: Add missing dependency on CONFIG_SND_TIMERTakashi Iwai
Since the build of PCM timer may be disabled via Kconfig now, each driver that provides a timer interface needs to set CONFIG_SND_TIMER explicitly. Otherwise it may get a build error due to missing symbol. Fixes: 90bbaf66ee7b ('ALSA: timer: add config item to export PCM timer disabling for expert') Reported-by: kbuild test robot <fengguang.wu@intel.com> Cc: <stable@vger.kernel.org> # v4.4+ Signed-off-by: Takashi Iwai <tiwai@suse.de>
2016-01-26Merge remote-tracking branch 'mkp-scsi/4.5/scsi-fixes' into fixesJames Bottomley
2016-01-26SCSI: fix crashes in sd and sr runtime PMAlan Stern
Runtime suspend during driver probe and removal can cause problems. The driver's runtime_suspend or runtime_resume callbacks may invoked before the driver has finished binding to the device or after the driver has unbound from the device. This problem shows up with the sd and sr drivers, and can cause disk or CD/DVD drives to become unusable as a result. The fix is simple. The drivers store a pointer to the scsi_disk or scsi_cd structure as their private device data when probing is finished, so we simply have to be sure to clear the private data during removal and test it during runtime suspend/resume. This fixes <https://bugs.debian.org/801925>. Signed-off-by: Alan Stern <stern@rowland.harvard.edu> Reported-by: Paul Menzel <paul.menzel@giantmonkey.de> Reported-by: Erich Schubert <erich@debian.org> Reported-by: Alexandre Rossi <alexandre.rossi@gmail.com> Tested-by: Paul Menzel <paul.menzel@giantmonkey.de> Tested-by: Erich Schubert <erich@debian.org> CC: <stable@vger.kernel.org> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
2016-01-27powerpc/eeh: Fix PE location codeGavin Shan
In eeh_pe_loc_get(), the PE location code is retrieved from the "ibm,loc-code" property of the device node for the bridge of the PE's primary bus. It's not correct because the property indicates the parent PE's location code. This reads the correct PE location code from "ibm,io-base-loc-code" or "ibm,slot-location-code" property of PE parent bus's device node. Cc: stable@vger.kernel.org # v3.16+ Fixes: 357b2f3dd9b7 ("powerpc/eeh: Dump PE location code") Signed-off-by: Gavin Shan <gwshan@linux.vnet.ibm.com> Tested-by: Russell Currey <ruscur@russell.cc> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2016-01-26ARM: 8500/1: fix atags_to_fdt with stack-protector-strongKees Cook
Building with CONFIG_CC_STACKPROTECTOR_STRONG triggers protection code generation under CONFIG_ARM_ATAG_DTB_COMPAT but this is too early for being able to use any of the stack_chk code. Explicitly disable it for only the atags_to_fdt bits. Suggested-by: zhxihu <zhxihu@marvell.com> Signed-off-by: Kees Cook <keescook@chromium.org> Acked-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2016-01-26x86/mm: Fix types used in pgprot cacheability flags translationsJan Beulich
For PAE kernels "unsigned long" is not suitable to hold page protection flags, since _PAGE_NX doesn't fit there. This is the reason for quite a few W+X pages getting reported as insecure during boot (observed namely for the entire initrd range). Fixes: 281d4078be ("x86: Make page cache mode a real type") Signed-off-by: Jan Beulich <jbeulich@suse.com> Reviewed-by: Juergen Gross <JGross@suse.com> Cc: stable@vger.kernel.org Link: http://lkml.kernel.org/r/56A7635602000078000CAFF1@prv-mh.provo.novell.com Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2016-01-26drm/etnaviv: call correct function when trying to vmap a DMABUFLucas Stach
When trying to get the vmap address of an imported buffer, we must call into the appropriate helper function, to allow the exporter to establish the vmap, instead of trying to vmap the buffer on our own. Add an indirection through etnaviv_gem_ops to allow the correct implementation to be called. Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
2016-01-26drm/etnaviv: rename etnaviv_gem_vaddr to etnaviv_gem_vmapLucas Stach
This function follows the semantics of vmap() by returning NULL in case of an error. To make things less confusing rename it to make make both functions more closely related. Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
2016-01-26drm/etnaviv: fix get pages error path in etnaviv_gem_vaddrLucas Stach
In case that etnaviv_gem_get_pages is unable to get the required pages the object mutex needs to be unlocked. Also return NULL in this case instead of propagating the error, as callers of this function might not be prepared to handle a pointer error, but expect this call to follow the semantics of a plain vmap to return NULL in case of an error. Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
2016-01-26drm/etnaviv: fix memory leak in IOMMU init pathLucas Stach
Plug in error handling to free any allocated ressources in the IOMMU init path. Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
2016-01-26drm/etnaviv: add further minor features and varyings countRussell King
Export further minor feature bitmasks and the varyings count from the GPU specifications registers to userspace. Acked-by: Christian Gmeiner <christian.gmeiner@gmail.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
2016-01-26drm/etnaviv: add helper for comparing model/revision IDsRussell King
Add and use a helper for comparing the model and revision IDs. Acked-by: Christian Gmeiner <christian.gmeiner@gmail.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
2016-01-26drm/etnaviv: add helper to extract bitfieldsRussell King
Add a helper to extract etnaviv bitfields from register values. Acked-by: Christian Gmeiner <christian.gmeiner@gmail.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
2016-01-26drm/etnaviv: use defined constants for the chip modelRussell King
Use the defined constants in common.xml.h for the chip model rather than coding these as hex numbers. Acked-by: Christian Gmeiner <christian.gmeiner@gmail.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
2016-01-26drm/etnaviv: update common and state_hi xml.h filesRussell King
Update the common and state_hi xml.h header files from the etnaviv repository. Acked-by: Christian Gmeiner <christian.gmeiner@gmail.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> Signed-off-by: Lucas Stach <l.stach@pengutronix.de>