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* ARM: remove LITMUS^RT IPI notifierBjoern Brandenburg2017-06-15
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* Integrate preemption state machine with Linux schedulerBjoern Brandenburg2017-05-26
| | | | Track when a processor is going to schedule "soon".
* arm: rescheduling handler IPI does not call irq_enter()Bjoern Brandenburg2017-05-26
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* Feather-Trace: add platform independent implementationBjoern Brandenburg2017-05-26
| | | | | | | | | | | This patch adds the simple fallback implementation and creates dummy hooks in the x86 and ARM Kconfig files. Feather-Buffer: convert to atomic_t Feather-Trace: remove custom atomic ops - patch by Namhoon Kim (UNC). Feather-Trace: switch to correct portable atomics header - thanks Andrea Bastoni
* Add LITMUS^RT directoryBjoern Brandenburg2017-05-26
| | | | Hookup litmus/ with kernel and add extra version.
* ARM: dts: imx6sx-sdb: Remove OPP overrideLeonard Crestez2017-05-25
| | | | | | | | | | | | | | | | | | | | | | | commit d8581c7c8be172dac156a19d261f988a72ce596f upstream. The board file for imx6sx-sdb overrides cpufreq operating points to use higher voltages. This is done because the board has a shared rail for VDD_ARM_IN and VDD_SOC_IN and when using LDO bypass the shared voltage needs to be a value suitable for both ARM and SOC. This only applies to LDO bypass mode, a feature not present in upstream. When LDOs are enabled the effect is to use higher voltages than necessary for no good reason. Setting these higher voltages can make some boards fail to boot with ugly semi-random crashes reminiscent of memory corruption. These failures only happen on board rev. C, rev. B is reported to still work. Signed-off-by: Leonard Crestez <leonard.crestez@nxp.com> Fixes: 54183bd7f766 ("ARM: imx6sx-sdb: add revb board and make it default") Signed-off-by: Shawn Guo <shawnguo@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* ARM: dts: at91: sama5d3_xplained: not all ADC channels are availableLudovic Desroches2017-05-25
| | | | | | | | | | | | | commit d3df1ec06353e51fc44563d2e7e18d42811af290 upstream. Remove ADC channels that are not available by default on the sama5d3_xplained board (resistor not populated) in order to not create confusion. Signed-off-by: Ludovic Desroches <ludovic.desroches@microchip.com> Acked-by: Nicolas Ferre <nicolas.ferre@microchip.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* ARM: dts: at91: sama5d3_xplained: fix ADC vrefLudovic Desroches2017-05-25
| | | | | | | | | | | | | commit 9cdd31e5913c1f86dce7e201b086155b3f24896b upstream. The voltage reference for the ADC is not 3V but 3.3V since it is connected to VDDANA. Signed-off-by: Ludovic Desroches <ludovic.desroches@microchip.com> Acked-by: Nicolas Ferre <nicolas.ferre@microchip.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* ARM: 8670/1: V7M: Do not corrupt vector table around v7m_invalidate_l1 callVladimir Murzin2017-05-25
| | | | | | | | | | | | | | | commit 6d80594936914e798b1b54b3bfe4bd68d8418966 upstream. We save/restore registers around v7m_invalidate_l1 to address pointed by r12, which is vector table, so the first eight entries are overwritten with a garbage. We already have stack setup at that stage, so use it to save/restore register. Fixes: 6a8146f420be ("ARM: 8609/1: V7M: Add support for the Cortex-M7 processor") Signed-off-by: Vladimir Murzin <vladimir.murzin@arm.com> Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* ARM: 8662/1: module: split core and init PLT sectionsArd Biesheuvel2017-05-25
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | commit b7ede5a1f5905ac394cc8e61712a13e3c5cb7b8f upstream. Since commit 35fa91eed817 ("ARM: kernel: merge core and init PLTs"), the ARM module PLT code allocates all PLT entries in a single core section, since the overhead of having a separate init PLT section is not justified by the small number of PLT entries usually required for init code. However, the core and init module regions are allocated independently, and there is a corner case where the core region may be allocated from the VMALLOC region if the dedicated module region is exhausted, but the init region, being much smaller, can still be allocated from the module region. This puts the PLT entries out of reach of the relocated branch instructions, defeating the whole purpose of PLTs. So split the core and init PLT regions, and name the latter ".init.plt" so it gets allocated along with (and sufficiently close to) the .init sections that it serves. Also, given that init PLT entries may need to be emitted for branches that target the core module, modify the logic that disregards defined symbols to only disregard symbols that are defined in the same section. Fixes: 35fa91eed817 ("ARM: kernel: merge core and init PLTs") Reported-by: Angus Clark <angus@angusclark.org> Tested-by: Angus Clark <angus@angusclark.org> Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* KVM: arm: plug potential guest hardware debug leakageZhichao Huang2017-05-25
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | commit 661e6b02b5aa82db31897f36e96324b77450fd7a upstream. Hardware debugging in guests is not intercepted currently, it means that a malicious guest can bring down the entire machine by writing to the debug registers. This patch enable trapping of all debug registers, preventing the guests to access the debug registers. This includes access to the debug mode(DBGDSCR) in the guest world all the time which could otherwise mess with the host state. Reads return 0 and writes are ignored (RAZ_WI). The result is the guest cannot detect any working hardware based debug support. As debug exceptions are still routed to the guest normal debug using software based breakpoints still works. To support debugging using hardware registers we need to implement a debug register aware world switch as well as special trapping for registers that may affect the host state. Signed-off-by: Zhichao Huang <zhichao.huang@linaro.org> Signed-off-by: Alex Bennée <alex.bennee@linaro.org> Reviewed-by: Christoffer Dall <cdall@linaro.org> Signed-off-by: Christoffer Dall <cdall@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* arm: KVM: Do not use stack-protector to compile HYP codeMarc Zyngier2017-05-25
| | | | | | | | | | | | | | | | | | commit 501ad27c67ed0b90df465f23d33e9aed64058a47 upstream. We like living dangerously. Nothing explicitely forbids stack-protector to be used in the HYP code, while distributions routinely compile their kernel with it. We're just lucky that no code actually triggers the instrumentation. Let's not try our luck for much longer, and disable stack-protector for code living at HYP. Signed-off-by: Marc Zyngier <marc.zyngier@arm.com> Acked-by: Christoffer Dall <cdall@linaro.org> Signed-off-by: Christoffer Dall <cdall@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* ARM: tegra: paz00: Mark panel regulator as enabled on bootMarc Dietrich2017-05-25
| | | | | | | | | | | | | commit 0c18927f51f4d390abdcf385bff5f995407ee732 upstream. Current U-Boot enables the display already. Marking the regulator as enabled on boot fixes sporadic panel initialization failures. Signed-off-by: Marc Dietrich <marvin24@gmx.de> Tested-by: Misha Komarovskiy <zombah@gmail.com> Signed-off-by: Thierry Reding <treding@nvidia.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* KVM: arm/arm64: fix races in kvm_psci_vcpu_onAndrew Jones2017-05-20
| | | | | | | | | | | | | | | | | | | | | | commit 6c7a5dce22b3f3cc44be098e2837fa6797edb8b8 upstream. Fix potential races in kvm_psci_vcpu_on() by taking the kvm->lock mutex. In general, it's a bad idea to allow more than one PSCI_CPU_ON to process the same target VCPU at the same time. One such problem that may arise is that one PSCI_CPU_ON could be resetting the target vcpu, which fills the entire sys_regs array with a temporary value including the MPIDR register, while another looks up the VCPU based on the MPIDR value, resulting in no target VCPU found. Resolves both races found with the kvm-unit-tests/arm/psci unit test. Reviewed-by: Marc Zyngier <marc.zyngier@arm.com> Reviewed-by: Christoffer Dall <cdall@linaro.org> Reported-by: Levente Kurusa <lkurusa@redhat.com> Suggested-by: Christoffer Dall <cdall@linaro.org> Signed-off-by: Andrew Jones <drjones@redhat.com> Signed-off-by: Christoffer Dall <cdall@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* ARM: dts: sun7i: lamobo-r1: Fix CPU port RGMII settingsFlorian Fainelli2017-05-14
| | | | | | | | | | | | | | | | commit 0cdefd5b5485ee6eb3512a75739d09a4090176ed upstream. The CPU port of the BCM53125 is configured with RGMII (no delays) but this should actually be RGMII with transmit delay (rgmii-txid) because STMMAC takes care of inserting the transmitter delay. This fixes occasional packet loss encountered. Fixes: d7b9eaff5f0c ("ARM: dts: sun7i: Add BCM53125 switch nodes to the lamobo-r1 board") Reported-by: Hartmut Knaack <knaack.h@gmx.de> Signed-off-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* ARM: OMAP5 / DRA7: Fix HYP mode boot for thumb2 buildMatthijs van Duin2017-05-14
| | | | | | | | | | | | | commit 448c077eeb02240c430db2a2c3bf5285a4c65d66 upstream. 'adr' yields a data-pointer, not a function-pointer. Fixes: 999f934de195 ("ARM: omap5/dra7xx: Enable booting secondary CPU in HYP mode") Signed-off-by: Matthijs van Duin <matthijsvanduin@gmail.com> Signed-off-by: Tony Lindgren <tony@atomide.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* ARM: dts: NSP: GPIO reboot open-sourceJon Mason2017-05-14
| | | | | | | | | | | | | | | | | | | | | commit acfa28b3649ec07775efaac0c00de2db39d71634 upstream. The libgpio code pre-sets the GPIO values for the gpio-reset in the device tree. This results in the device being reset during bringup. To prevent this pre-setting, use the "open-source" flag in the device tree. Signed-off-by: Jon Mason <jon.mason@broadcom.com> Fixes: b1aaf88 ("ARM: dts: NSP: Add GPIO reboot method to bcm958625hr DTS file") Fixes: 10baed1 ("ARM: dts: NSP: Add GPIO reboot method to bcm958625xmc DTS file") Fixes: 088e3148 ("ARM: dts: NSP: Add new DT file for bcm958522er") Fixes: e3227c1 ("ARM: dts: NSP: Add new DT file for bcm958525er") Fixes: 2f8bc00 ("ARM: dts: NSP: Add new DT file for bcm958622hr") Fixes: d454c37 ("ARM: dts: NSP: Add new DT file for bcm958623hr") Fixes: f27eacf ("ARM: dts: NSP: Add new DT file for bcm988312hr") Signed-off-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* arm: dts: qcom: Fix ipq board clock ratesStephen Boyd2017-05-14
| | | | | | | | | | | | | | commit 06dbf468a2c42bf6c327a8eaf11ecb3ea96196f9 upstream. The ipq board has these rates as 25MHz, and not 19.2 and 27. I copy/pasted from other boards that have those rates but forgot to fix the rates here. Fixes: 30fc4212d541 ("arm: dts: qcom: Add more board clocks") Signed-off-by: Stephen Boyd <sboyd@codeaurora.org> Signed-off-by: Andy Gross <andy.gross@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* arm: kernel: Add SMC structure parameterAndy Gross2017-04-12
| | | | | | | | | | | | | | | | | | [ Upstream commit 680a0873e193bae666439f4b5e32c758e68f114c ] This patch adds a quirk parameter to the arm_smccc_(smc/hvc) calls. The quirk structure allows for specialized SMC operations due to SoC specific requirements. The current arm_smccc_(smc/hvc) is renamed and macros are used instead to specify the standard arm_smccc_(smc/hvc) or the arm_smccc_(smc/hvc)_quirk function. This patch and partial implementation was suggested by Will Deacon. Signed-off-by: Andy Gross <andy.gross@linaro.org> Reviewed-by: Will Deacon <will.deacon@arm.com> Signed-off-by: Will Deacon <will.deacon@arm.com> Signed-off-by: Sasha Levin <alexander.levin@verizon.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* ARM: dts: STiH407-family: set snps,dis_u3_susphy_quirkPatrice Chotard2017-04-12
| | | | | | | | | | | | | | | | | | | [ Upstream commit 8413299cb3933dade6186bbee8363f190032107e ] Since v4.10-rc1, the following logs appears in loop : [ 801.953836] usb usb6-port1: Cannot enable. Maybe the USB cable is bad? [ 801.960455] xhci-hcd xhci-hcd.0.auto: Cannot set link state. [ 801.966611] usb usb6-port1: cannot disable (err = -32) [ 806.083772] usb usb6-port1: Cannot enable. Maybe the USB cable is bad? [ 806.090370] xhci-hcd xhci-hcd.0.auto: Cannot set link state. [ 806.096494] usb usb6-port1: cannot disable (err = -32) After analysis, xhci try to set link in U3 and returns an error. Using snps,dis_u3_susphy_quirk fix this issue. Signed-off-by: Patrice Chotard <patrice.chotard@st.com> Signed-off-by: Sasha Levin <alexander.levin@verizon.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* ARM: davinci: PM: support da8xx DT platformsKevin Hilman2017-04-12
| | | | | | | | | | | [ Upstream commit 7e431af8fa0b9ed9d74378c99514856211cb9db8 ] Add PM support for DA850 device-tree boot. Signed-off-by: Kevin Hilman <khilman@baylibre.com> Signed-off-by: Sekhar Nori <nsekhar@ti.com> Signed-off-by: Sasha Levin <alexander.levin@verizon.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* kvm: arm/arm64: Fix locking for kvm_free_stage2_pgdSuzuki K Poulose2017-04-12
| | | | | | | | | | | | | | | | | | | | | | | | commit 8b3405e345b5a098101b0c31b264c812bba045d9 upstream. In kvm_free_stage2_pgd() we don't hold the kvm->mmu_lock while calling unmap_stage2_range() on the entire memory range for the guest. This could cause problems with other callers (e.g, munmap on a memslot) trying to unmap a range. And since we have to unmap the entire Guest memory range holding a spinlock, make sure we yield the lock if necessary, after we unmap each PUD range. Fixes: commit d5d8184d35c9 ("KVM: ARM: Memory virtualization setup") Cc: Paolo Bonzini <pbonzin@redhat.com> Cc: Marc Zyngier <marc.zyngier@arm.com> Cc: Christoffer Dall <christoffer.dall@linaro.org> Cc: Mark Rutland <mark.rutland@arm.com> Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com> [ Avoid vCPU starvation and lockup detector warnings ] Signed-off-by: Marc Zyngier <marc.zyngier@arm.com> Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com> Signed-off-by: Christoffer Dall <cdall@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* arm/arm64: KVM: Take mmap_sem in kvm_arch_prepare_memory_regionMarc Zyngier2017-04-12
| | | | | | | | | | | | | | | | | commit 72f310481a08db821b614e7b5d00febcc9064b36 upstream. We don't hold the mmap_sem while searching for VMAs (via find_vma), in kvm_arch_prepare_memory_region, which can end up in expected failures. Fixes: commit 8eef91239e57 ("arm/arm64: KVM: map MMIO regions at creation time") Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org> Cc: Eric Auger <eric.auger@rehat.com> Reviewed-by: Christoffer Dall <cdall@linaro.org> [ Handle dirty page logging failure case ] Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com> Signed-off-by: Marc Zyngier <marc.zyngier@arm.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* arm/arm64: KVM: Take mmap_sem in stage2_unmap_vmMarc Zyngier2017-04-12
| | | | | | | | | | | | | | | commit 90f6e150e44a0dc3883110eeb3ab35d1be42b6bb upstream. We don't hold the mmap_sem while searching for the VMAs when we try to unmap each memslot for a VM. Fix this properly to avoid unexpected results. Fixes: commit 957db105c997 ("arm/arm64: KVM: Introduce stage2_unmap_vm") Reviewed-by: Christoffer Dall <cdall@linaro.org> Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com> Signed-off-by: Marc Zyngier <marc.zyngier@arm.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* ARM: dts: BCM5301X: Correct GIC_PPI interrupt flagsJon Mason2017-04-08
| | | | | | | | | | | | | | | | | | commit 0c2bf9f95983fe30aa2f6463cb761cd42c2d521a upstream. GIC_PPI flags were misconfigured for the timers, resulting in errors like: [ 0.000000] GIC: PPI11 is secure or misconfigured Changing them to being edge triggered corrects the issue Suggested-by: Rafał Miłecki <rafal@milecki.pl> Signed-off-by: Jon Mason <jon.mason@broadcom.com> Fixes: d27509f1 ("ARM: BCM5301X: add dts files for BCM4708 SoC") Signed-off-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: Amit Pundir <amit.pundir@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* ARM: BCM5301X: Add back handler ignoring external imprecise abortsRafał Miłecki2017-04-08
| | | | | | | | | | | | | | | | | | | | | | | | | commit 09f3510fb70a46c8921f2cf4a90dbcae460a6820 upstream. Since early BCM5301X days we got abort handler that was removed by commit 937b12306ea79 ("ARM: BCM5301X: remove workaround imprecise abort fault handler"). It assumed we need to deal only with pending aborts left by the bootloader. Unfortunately this isn't true for BCM5301X. When probing PCI config space (device enumeration) it is expected to have master aborts on the PCI bus. Most bridges don't forward (or they allow disabling it) these errors onto the AXI/AMBA bus but not the Northstar (BCM5301X) one. iProc PCIe controller on Northstar seems to be some older one, without a control register for errors forwarding. It means we need to workaround this at platform level. All newer platforms are not affected by this issue. Signed-off-by: Rafał Miłecki <rafal@milecki.pl> Signed-off-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: Amit Pundir <amit.pundir@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* ARM: at91: pm: cpu_idle: switch DDR to power-down modeNicolas Ferre2017-03-30
| | | | | | | | | | | | | | | | | | | | | | | | | | commit 60b89f1928af80b546b5c3fd8714a62f6f4b8844 upstream. On some DDR controllers, compatible with the sama5d3 one, the sequence to enter/exit/re-enter the self-refresh mode adds more constrains than what is currently written in the at91_idle driver. An actual access to the DDR chip is needed between exit and re-enter of this mode which is somehow difficult to implement. This sequence can completely hang the SoC. It is particularly experienced on parts which embed a L2 cache if the code run between IDLE calls fits in it... Moreover, as the intention is to enter and exit pretty rapidly from IDLE, the power-down mode is a good candidate. So now we use power-down instead of self-refresh. As we can simplify the code for sama5d3 compatible DDR controllers, we instantiate a new sama5d3_ddr_standby() function. Signed-off-by: Nicolas Ferre <nicolas.ferre@microchip.com> Fixes: 017b5522d5e3 ("ARM: at91: Add new binding for sama5d3-ddramc") Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* Revert "ARM: at91/dt: sama5d2: Use new compatible for ohci node"Romain Izard2017-03-30
| | | | | | | | | | | | | | | | | | | | | | | commit 9e10889a3177340dcda7d29c6d8fbd97247b007b upstream. This reverts commit cab43282682e ("ARM: at91/dt: sama5d2: Use new compatible for ohci node") It depends from commit 7150bc9b4d43 ("usb: ohci-at91: Forcibly suspend ports while USB suspend") which was reverted and implemented differently. With the new implementation, the compatible string must remain the same. The compatible string introduced by this commit has been used in the default SAMA5D2 dtsi starting from Linux 4.8. As it has never been working correctly in an official release, removing it should not be breaking the stability rules. Fixes: cab43282682e ("ARM: at91/dt: sama5d2: Use new compatible for ohci node") Signed-off-by: Romain Izard <romain.izard.pro@gmail.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* arm/arm64: KVM: Enforce unconditional flush to PoC when mapping to stage-2Marc Zyngier2017-03-12
| | | | | | | | | | | | | | | | | | | | | | commit 8f36ebaf21fdae99c091c67e8b6fab33969f2667 upstream. When we fault in a page, we flush it to the PoC (Point of Coherency) if the faulting vcpu has its own caches off, so that it can observe the page we just brought it. But if the vcpu has its caches on, we skip that step. Bad things happen when *another* vcpu tries to access that page with its own caches disabled. At that point, there is no garantee that the data has made it to the PoC, and we access stale data. The obvious fix is to always flush to PoC when a page is faulted in, no matter what the state of the vcpu is. Fixes: 2d58b733c876 ("arm64: KVM: force cache clean on page fault when caches are off") Reviewed-by: Christoffer Dall <christoffer.dall@linaro.org> Signed-off-by: Marc Zyngier <marc.zyngier@arm.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* ARM: dts: at91: Enable DMA on sama5d2_xplained consoleAlexandre Belloni2017-03-12
| | | | | | | | | | | commit 78162d48466d23c45a784034630c5928af631e3d upstream. Enable DMA on uart1 to get a more reliable console. Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* ARM: dts: at91: Enable DMA on sama5d4_xplained consoleAlexandre Belloni2017-03-12
| | | | | | | | | | | | | commit ef8d02d4a2c36f7a93e74c95a9c419353b310117 upstream. Enable DMA on usart3 to get a more reliable console. This is especially useful for automation and kernelci were a kernel with PROVE_LOCKING enabled is quite susceptible to character loss, resulting in tests failure. Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* ARM: 8658/1: uaccess: fix zeroing of 64-bit get_user()Kees Cook2017-02-23
| | | | | | | | | | | | | commit 9e3440481845b2ec22508f60837ee2cab2b6054f upstream. The 64-bit get_user() wasn't clearing the high word due to a typo in the error handler. The exception handler entry was already correct, though. Noticed during recent usercopy test additions in lib/test_user_copy.c. Signed-off-by: Kees Cook <keescook@chromium.org> Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* ARM: 8642/1: LPAE: catch pending imprecise abort on unmaskAlexander Sverdlin2017-02-14
| | | | | | | | | | | | | | | commit 97a98ae5b8acf08d07d972c087b2def060bc9b73 upstream. Asynchronous external abort is coded differently in DFSR with LPAE enabled. Fixes: 9254970c "ARM: 8447/1: catch pending imprecise abort on unmask". Signed-off-by: Alexander Sverdlin <alexander.sverdlin@nokia.com> Cc: Russell King <linux@armlinux.org.uk> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: linux-arm-kernel@lists.infradead.org Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* ARM: dts: imx6dl: fix GPIO4 rangeSébastien Szymanski2017-02-14
| | | | | | | | | | | | | | | | | | | | | | | | commit 7f59b319111bbc3a5f32730c8a43b201e9522f52 upstream. GPIO4_11 is on pin 152(MX6DL_PAD_KEY_ROW2) and not on pin 151(MX6DL_PAD_KEY_ROW1). I found the error while booting a mainline kernel on APF6S SoM and noticed the following message: [ 2.609337] imx6dl-pinctrl 20e0000.iomuxc: pin MX6DL_PAD_KEY_ROW1 already requested by 20a8000.gpio:105; cannot claim for 20a8000.gpio:107 [ 2.621884] imx6dl-pinctrl 20e0000.iomuxc: pin-151 (20a8000.gpio:107) status -22 [ 2.629303] spi_imx 2008000.ecspi: Can't get CS GPIO 107 With this patch, the message is gone and spi_imx driver probes correctly. Fixes: bb728d662bed ("ARM: dts: add gpio-ranges property to iMX GPIO controllers") Signed-off-by: Sébastien Szymanski <sebastien.szymanski@armadeus.com> Signed-off-by: Shawn Guo <shawnguo@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* ARM: 8643/3: arm/ptrace: Preserve previous registers for short regset writeDave Martin2017-02-14
| | | | | | | | | | | | | | | commit 228dbbfb5d77f8e047b2a1d78da14b7158433027 upstream. Ensure that if userspace supplies insufficient data to PTRACE_SETREGSET to fill all the registers, the thread's old registers are preserved. Fixes: 5be6f62b0059 ("ARM: 6883/1: ptrace: Migrate to regsets framework") Signed-off-by: Dave Martin <Dave.Martin@arm.com> Acked-by: Russell King <rmk+kernel@armlinux.org.uk> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* ARM: 8613/1: Fix the uaccess crash on PB11MPCoreLinus Walleij2017-01-26
| | | | | | | | | | | | | | | | | | | | | | | | | | | | commit 90f92c631b210c1e97080b53a9d863783281a932 upstream. The following patch was sketched by Russell in response to my crashes on the PB11MPCore after the patch for software-based priviledged no access support for ARMv8.1. See this thread: http://marc.info/?l=linux-arm-kernel&m=144051749807214&w=2 I am unsure what is going on, I suspect everyone involved in the discussion is. I just want to repost this to get the discussion restarted, as I still have to apply this patch with every kernel iteration to get my PB11MPCore Realview running. Testing by Neil Armstrong on the Oxnas NAS has revealed that this bug exist also on that widely deployed hardware, so we are probably currently regressing all ARM11MPCore systems. Cc: Russell King <linux@armlinux.org.uk> Cc: Will Deacon <will.deacon@arm.com> Fixes: a5e090acbf54 ("ARM: software-based priviledged-no-access support") Tested-by: Neil Armstrong <narmstrong@baylibre.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* ARM: ux500: fix prcmu_is_cpu_in_wfi() calculationArnd Bergmann2017-01-26
| | | | | | | | | | | | | | | | | | | | | commit f0e8faa7a5e894b0fc99d24be1b18685a92ea466 upstream. This function clearly never worked and always returns true, as pointed out by gcc-7: arch/arm/mach-ux500/pm.c: In function 'prcmu_is_cpu_in_wfi': arch/arm/mach-ux500/pm.c:137:212: error: ?: using integer constants in boolean context, the expression will always evaluate to 'true' [-Werror=int-in-bool-context] With the added braces, the condition actually makes sense. Fixes: 34fe6f107eab ("mfd : Check if the other db8500 core is in WFI") Signed-off-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Daniel Lezcano <daniel.lezcano@linaro.org> Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* ARM: dts: omap3: Fix Card Detect and Write Protect on Logic PD SOM-LVAdam Ford2017-01-26
| | | | | | | | | | | | | | commit 1ea6af3216b092ec97129ac81bd95cf254c4b140 upstream. This fixes commit ab8dd3aed011 ("ARM: DTS: Add minimal Support for Logic PD DM3730 SOM-LV") where the Card Detect and Write Protect pins were improperly configured. Fixes: ab8dd3aed011 ("ARM: DTS: Add minimal Support for Logic PD DM3730 SOM-LV") Signed-off-by: Adam Ford <aford173@gmail.com> Signed-off-by: Tony Lindgren <tony@atomide.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* ARM: dts: imx6qdl-nitrogen6_max: fix sgtl5000 pinctrl initGary Bisson2017-01-26
| | | | | | | | | | | | | | | | | | | commit 6ab5c2b662e2dcbb964099bf7f19e9dbc9ae5a41 upstream. This patch fixes the following error: sgtl5000 0-000a: Error reading chip id -6 imx-sgtl5000 sound: ASoC: CODEC DAI sgtl5000 not registered imx-sgtl5000 sound: snd_soc_register_card failed (-517) The problem was that the pinctrl group was linked to the sound driver instead of the codec node. Since the codec is probed first, the sys_mclk was missing and it would therefore fail to initialize. Fixes: b32e700256bc ("ARM: dts: imx: add Boundary Devices Nitrogen6_Max board") Signed-off-by: Gary Bisson <gary.bisson@boundarydevices.com> Signed-off-by: Shawn Guo <shawnguo@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* ARM: dts: omap2: Add an empty chosen node to top level DTSIJavier Martinez Canillas2017-01-26
| | | | | | | | | | | | | | | | | | | commit 3d37d41a148c32389ed360e10a9f8a7cd37ce166 upstream. Commit d1f3156fc8c7 ("ARM: dts: omap2: Remove skeleton.dtsi usage") removed the skeleton.dtsi usage since we want to get rid of it. But this can cause issues when booting a kernel with a boot-loader that doesn't create a chosen node if this isn't present in the DTB since the decompressor relies on a pre-existing chosen node to be available to insert the command line and merge other ATAGS info. Fixes: d1f3156fc8c7 ("ARM: dts: omap2: Remove skeleton.dtsi usage") Reported-by: Pali Rohar <pali.rohar@gmail.com> Signed-off-by: Javier Martinez Canillas <javier@osg.samsung.com> Signed-off-by: Tony Lindgren <tony@atomide.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* ARM: dts: omap3: Add an empty chosen node to top level DTSIJavier Martinez Canillas2017-01-26
| | | | | | | | | | | | | | | | | | | commit 23ab4c6183ac0679d80888b5c4cc1d528fcc21c2 upstream. Commit 008a2ebcd677 ("ARM: dts: omap3: Remove skeleton.dtsi usage") removed the skeleton.dtsi usage since we want to get rid of it. But this can cause issues when booting a kernel with a boot-loader that doesn't create a chosen node if this isn't present in the DTB since the decompressor relies on a pre-existing chosen node to be available to insert the command line and merge other ATAGS info. Fixes: 008a2ebcd677 ("ARM: dts: omap3: Remove skeleton.dtsi usage") Reported-by: Pali Rohar <pali.rohar@gmail.com> Signed-off-by: Javier Martinez Canillas <javier@osg.samsung.com> Signed-off-by: Tony Lindgren <tony@atomide.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* ARM: dts: am4372: Add an empty chosen node to top level DTSIJavier Martinez Canillas2017-01-26
| | | | | | | | | | | | | | | | | | | commit ce95077d0cdfcc8e40dea10a1680249831ccec77 upstream. Commit 75813028bbd7 ("ARM: dts: am4372: Remove skeleton.dtsi usage") removed the skeleton.dtsi usage since we want to get rid of it. But this can cause issues when booting a kernel with a boot-loader that doesn't create a chosen node if this isn't present in the DTB since the decompressor relies on a pre-existing chosen node to be available to insert the command line and merge other ATAGS info. Fixes: 75813028bbd7 ("ARM: dts: am4372: Remove skeleton.dtsi usage") Reported-by: Pali Rohar <pali.rohar@gmail.com> Signed-off-by: Javier Martinez Canillas <javier@osg.samsung.com> Signed-off-by: Tony Lindgren <tony@atomide.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* ARM: dts: omap5: Add an empty chosen node to top level DTSIJavier Martinez Canillas2017-01-26
| | | | | | | | | | | | | | | | | | | commit c9faa84cb9c34852ad70cb175457ae21fc06f39b upstream. Commit 76a8548ea987 ("ARM: dts: omap5: Remove skeleton.dtsi usage") removed the skeleton.dtsi usage since we want to get rid of it. But this can cause issues when booting a kernel with a boot-loader that doesn't create a chosen node if this isn't present in the DTB since the decompressor relies on a pre-existing chosen node to be available to insert the command line and merge other ATAGS info. Fixes: 76a8548ea987 ("ARM: dts: omap5: Remove skeleton.dtsi usage") Reported-by: Pali Rohar <pali.rohar@gmail.com> Signed-off-by: Javier Martinez Canillas <javier@osg.samsung.com> Signed-off-by: Tony Lindgren <tony@atomide.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* ARM: dts: omap4: Add an empty chosen node to top level DTSIJavier Martinez Canillas2017-01-26
| | | | | | | | | | | | | | | | | | | commit 6c565d1a63ce241a0100f5d327c48dde87b4df76 upstream. Commit da6269e7e3dd ("ARM: dts: omap4: Remove skeleton.dtsi usage") removed the skeleton.dtsi usage since we want to get rid of it. But this can cause issues when booting a kernel with a boot-loader that doesn't create a chosen node if this isn't present in the DTB since the decompressor relies on a pre-existing chosen node to be available to insert the command line and merge other ATAGS info. Fixes: da6269e7e3dd ("ARM: dts: omap4: Remove skeleton.dtsi usage") Reported-by: Pali Rohar <pali.rohar@gmail.com> Signed-off-by: Javier Martinez Canillas <javier@osg.samsung.com> Signed-off-by: Tony Lindgren <tony@atomide.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* ARM: dts: am33xx: Add an empty chosen node to top level DTSIJavier Martinez Canillas2017-01-26
| | | | | | | | | | | | | | | | | | | commit 1d8d6d3f2f7d553c479f24ab93767974a8c2dfad upstream. Commit f8bf01611c99 ("ARM: dts: am33xx: Remove skeleton.dtsi usage") removed the skeleton.dtsi usage since we want to get rid of it. But this can cause issues when booting a kernel with a boot-loader that doesn't create a chosen node if this isn't present in the DTB since the decompressor relies on a pre-existing chosen node to be available to insert the command line and merge other ATAGS info. Fixes: f8bf01611c99 ("ARM: dts: am33xx: Remove skeleton.dtsi usage") Reported-by: Pali Rohar <pali.rohar@gmail.com> Signed-off-by: Javier Martinez Canillas <javier@osg.samsung.com> Signed-off-by: Tony Lindgren <tony@atomide.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* ARM: dts: dm814x: Add an empty chosen node to top level DTSIJavier Martinez Canillas2017-01-26
| | | | | | | | | | | | | | | | | | | commit 9536fd30d41ae4f30d04762676e5f5f602e16aa8 upstream. Commit 76155b378c59 ("ARM: dts: dm814x: Remove skeleton.dtsi usage") removed the skeleton.dtsi usage since we want to get rid of it. But this can cause issues when booting a kernel with a boot-loader that doesn't create a chosen node if this isn't present in the DTB since the decompressor relies on a pre-existing chosen node to be available to insert the command line and merge other ATAGS info. Fixes: 76155b378c59 ("ARM: dts: dm814x: Remove skeleton.dtsi usage") Reported-by: Pali Rohar <pali.rohar@gmail.com> Signed-off-by: Javier Martinez Canillas <javier@osg.samsung.com> Signed-off-by: Tony Lindgren <tony@atomide.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* ARM: dts: dm816x: Add an empty chosen node to top level DTSIJavier Martinez Canillas2017-01-26
| | | | | | | | | | | | | | | | | | | commit 6ed80b3a232e61da6d0189bbbe2b2b9afaefe3b3 upstream. Commit 06bfb9c19957 ("ARM: dts: dm816x: Remove skeleton.dtsi usage") removed the skeleton.dtsi usage since we want to get rid of it. But this can cause issues when booting a kernel with a boot-loader that doesn't create a chosen node if this isn't present in the DTB since the decompressor relies on a pre-existing chosen node to be available to insert the command line and merge other ATAGS info. Fixes: 06bfb9c19957 ("ARM: dts: dm816x: Remove skeleton.dtsi usage") Reported-by: Pali Rohar <pali.rohar@gmail.com> Signed-off-by: Javier Martinez Canillas <javier@osg.samsung.com> Signed-off-by: Tony Lindgren <tony@atomide.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* ARM: dts: dra7: Add an empty chosen node to top level DTSIJavier Martinez Canillas2017-01-26
| | | | | | | | | | | | | | | | | | | commit 7f6c857b12911ed56b2056f9d5491e16b5fc95ea upstream. Commit 55871eb6e2cc ("ARM: dts: dra7: Remove skeleton.dtsi usage") removed the skeleton.dtsi usage since we want to get rid of it. But this can cause issues when booting a kernel with a boot-loader that doesn't create a chosen node if this isn't present in the DTB since the decompressor relies on a pre-existing chosen node to be available to insert the command line and merge other ATAGS info. Fixes: 55871eb6e2cc ("ARM: dts: dra7: Remove skeleton.dtsi usage") Reported-by: Pali Rohar <pali.rohar@gmail.com> Signed-off-by: Javier Martinez Canillas <javier@osg.samsung.com> Signed-off-by: Tony Lindgren <tony@atomide.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* ARM: dts: da850-evm: fix read access to SPI flashFabien Parent2017-01-26
| | | | | | | | | | | | | | | | | | | | | | commit 43849785e1079f6606a31cb7fda92d1200849728 upstream. Read access to the SPI flash are broken on da850-evm, i.e. the data read is not what is actually programmed on the flash. According to the datasheet for the M25P64 part present on the da850-evm, if the SPI frequency is higher than 20MHz then the READ command is not usable anymore and only the FAST_READ command can be used to read data. This commit specifies in the DTS that we should use FAST_READ command instead of the READ command. Tested-by: Kevin Hilman <khilman@baylibre.com> Signed-off-by: Fabien Parent <fparent@baylibre.com> [nsekhar@ti.com: subject line adjustment] Signed-off-by: Sekhar Nori <nsekhar@ti.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Olof Johansson <olof@lixom.net>
* ARM: dts: OMAP5 / DRA7: indicate that SATA port 0 is available.Jean-Jacques Hiblot2017-01-26
| | | | | | | | | | | | | | | | | | | | | | | | | | commit 87cb12910a2ab6ed41ae951ea4d9c1cc1120199a upstream. AHCI provides the register PORTS_IMPL to let the software know which port is supported. The register must be initialized by the bootloader. However in some cases u-boot doesn't properly initialize this value (if it is not compiled with SATA support for example or if the SATA initialization fails). The DTS entry "ports-implemented" can be used to override the value in PORTS_IMPL. Without this patch the SATA will not work in the following two cases: * if there has been a failure to initialize SATA in u-boot. * if ahci_platform module has been removed and re-inserted. The reason is that the content of PORTS_IMPL is lost after the module is removed. I suspect that it's because the controller is reset by the hwmod. Signed-off-by: Jean-Jacques Hiblot <jjhiblot@ti.com> Acked-by: Roger Quadros <rogerq@ti.com> [tony@atomide.com: updated comments with what goes wrong] Signed-off-by: Tony Lindgren <tony@atomide.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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