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2013-02-08ARM: GIC: fix GIC cpumask initializationRussell King1-2/+23
Punit Agrawal reports: > I was trying to boot 3.8-rc5 on Realview EB 11MPCore using > realview-smp_defconfig as a starting point but the kernel failed to > progress past the log below (config attached). > > Pawel suggested I try reverting 384a290283f - "ARM: gic: use a private > mapping for CPU target interfaces" that you've authored. With this > commit reverted the kernel boots. > > I am not quite sure why the commit breaks 11MPCore but Pawel (cc'd) > might be able to shed light on that. Some early GIC implementations return zero for the first distributor CPU routing register. This means we can't rely on that telling us which CPU interface we're connected to. We know that these platforms implement PPIs for IRQs 29-31 - but we shouldn't assume that these will always be populated. So, instead, scan for a non-zero CPU routing register in the first 32 IRQs and use that as our CPU mask. Reported-by: Punit Agrawal <punit.agrawal@arm.com> Reviewed-by: Nicolas Pitre <nico@linaro.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2013-01-09Merge branch 'fixes' of git://git.linaro.org/people/rmk/linux-armLinus Torvalds1-2/+7
Pull ARM fixes from Russell King. * 'fixes' of git://git.linaro.org/people/rmk/linux-arm: ARM: 7616/1: cache-l2x0: aurora: Use writel_relaxed instead of writel ARM: 7615/1: cache-l2x0: aurora: Invalidate during clean operation with WT enable ARM: 7614/1: mm: fix wrong branch from Cortex-A9 to PJ4b ARM: 7612/1: imx: Do not select some errata that depends on !ARCH_MULTIPLATFORM ARM: 7611/1: VIC: fix bug in VIC irqdomain code ARM: 7610/1: versatile: bump IRQ numbers ARM: 7609/1: disable errata work-arounds which access secure registers ARM: 7608/1: l2x0: Only set .set_debug on PL310 r3p0 and earlier
2013-01-03ARM: drivers: remove __dev* attributes.Greg Kroah-Hartman2-6/+5
CONFIG_HOTPLUG is going away as an option. As a result, the __dev* markings need to be removed. This change removes the use of __devinit, __devexit_p, __devinitdata, and __devexit from these drivers. Based on patches originally written by Bill Pemberton, but redone by me in order to handle some of the coding style issues better, by hand. Cc: Bill Pemberton <wfp5p@virginia.edu> Cc: Russell King <linux@arm.linux.org.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-01-02ARM: 7611/1: VIC: fix bug in VIC irqdomain codeLinus Walleij1-2/+7
The VIC irqdomain code added in commit 07c9249f1fa90cc8189bed44c0bcece664596a72 "ARM: 7554/1: VIC: use irq_domain_add_simple()" Had two bugs: 1) It didn't call irq_create_mapping() once on each valid irq source in the slowpath when registering the controller. 2) It passed a -1 as IRQ offset for the DT case, whereas 0 should be passed as invalid IRQ instead. Cc: Grant Likely <grant.likely@secretlab.ca> Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2012-12-11Merge branch 'devel-stable' into for-linusRussell King1-9/+36
2012-12-11Merge branches 'cache-l2x0', 'fixes', 'hdrs', 'misc', 'mmci', 'vic' and ↵Russell King2-14/+7
'warnings' into for-next
2012-11-28ARM: 7586/1: sp804: set cpumask to cpu_possible_mask for clock event deviceWill Deacon1-1/+1
The SP804 driver statically initialises the cpumask of the clock event device to be cpu_all_mask, which is derived from the compile-time constant NR_CPUS. This breaks SMP_ON_UP systems where the interrupt controller handling the sp804 doesn't have the irq_set_affinity callback on the irq_chip, because the common timer code fails to identify the device as cpu-local and ends up treating it as a broadcast device instead. This patch fixes the problem by using cpu_possible_mask at runtime, which will correctly represent the possible CPUs when SMP_ON_UP is being used. Signed-off-by: Will Deacon <will.deacon@arm.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2012-11-19ARM: gic: use a private mapping for CPU target interfacesNicolas Pitre1-9/+36
The GIC interface numbering does not necessarily follow the logical CPU numbering, especially for complex topologies such as multi-cluster systems. Fortunately we can easily probe the GIC to create a mapping as the Interrupt Processor Targets Registers for the first 32 interrupts are read-only, and each field returns a value that always corresponds to the processor reading the register. Initially all mappings target all CPUs in case an IPI is required to boot secondary CPUs. It is refined as those CPUs discover what their actual mapping is. Signed-off-by: Nicolas Pitre <nico@linaro.org> Acked-by: Will Deacon <will.deacon@arm.com>
2012-11-08ARM: vic: fix build warning caused by previous commitRussell King1-1/+0
07c9249f1f (ARM: 7554/1: VIC: use irq_domain_add_simple()) removed the use of 'irq_base' but did not remove the variable itself, which causes: arch/arm/common/vic.c: In function 'vic_of_init': arch/arm/common/vic.c:410:6: warning: unused variable 'irq_base' Remove this now unused variable. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2012-10-18ARM: 7554/1: VIC: use irq_domain_add_simple()Linus Walleij1-12/+6
Instead of allocating descriptors on-the-fly for the device tree initialization case, use irq_domain_add_simple() which will take care of this if you pass negative as the first_irq. Alter the signature of __vic_init() to pass the first_irq as signed so this works as expected. Switching the VIC to use irq_domain_add_simple() also has the upside of displaying the same WARNING when you boot with pre-allocated descriptors on systems using SPARSE_IRQ but yet not using device tree. Cc: Grant Likely <grant.likely@secretlab.ca> Acked-by: Rob Herring <rob.herring@calxeda.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2012-10-13ARM: config: sort select statements alphanumericallyRussell King1-2/+2
As suggested by Andrew Morton: This is a pet peeve of mine. Any time there's a long list of items (header file inclusions, kconfig entries, array initalisers, etc) and someone wants to add a new item, they *always* go and stick it at the end of the list. Guys, don't do this. Either put the new item into a randomly-chosen position or, probably better, alphanumerically sort the list. lets sort all our select statements alphanumerically. This commit was created by the following perl: while (<>) { while (/\\\s*$/) { $_ .= <>; } undef %selects if /^\s*config\s+/; if (/^\s+select\s+(\w+).*/) { if (defined($selects{$1})) { if ($selects{$1} eq $_) { print STDERR "Warning: removing duplicated $1 entry\n"; } else { print STDERR "Error: $1 differently selected\n". "\tOld: $selects{$1}\n". "\tNew: $_\n"; exit 1; } } $selects{$1} = $_; next; } if (%selects and (/^\s*$/ or /^\s+help/ or /^\s+---help---/ or /^endif/ or /^endchoice/)) { foreach $k (sort (keys %selects)) { print "$selects{$k}"; } undef %selects; } print; } if (%selects) { foreach $k (sort (keys %selects)) { print "$selects{$k}"; } } It found two duplicates: Warning: removing duplicated S5P_SETUP_MIPIPHY entry Warning: removing duplicated HARDIRQS_SW_RESEND entry and they are identical duplicates, hence the shrinkage in the diffstat of two lines. We have four testers reporting success of this change (Tony, Stephen, Linus and Sekhar.) Acked-by: Jason Cooper <jason@lakedaemon.net> Acked-by: Tony Lindgren <tony@atomide.com> Acked-by: Stephen Warren <swarren@nvidia.com> Acked-by: Linus Walleij <linus.walleij@linaro.org> Acked-by: Sekhar Nori <nsekhar@ti.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2012-10-09ARM: pxa: armcore: fix PCI PIO warningsArnd Bergmann1-3/+9
The it8152 PCI host used on the pxa/cm_x2xx machines uses the old-style I/O window registration. This should eventually get converted to pci_ioremap_io() but for now, let's cast the IT8152_IO_BASE constant to an integer type to get rid of the warnings. Without this patch, building cm_x2xx_defconfig results in: arch/arm/common/it8152.c: In function 'it8152_pci_setup': arch/arm/common/it8152.c:287:18: warning: assignment makes integer from pointer without a cast [enabled by default] arch/arm/common/it8152.c:288:16: warning: assignment makes integer from pointer without a cast [enabled by default] arch/arm/common/it8152.c:291:17: warning: assignment makes integer from pointer without a cast [enabled by default] Signed-off-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Igor Grinberg <grinberg@compulab.co.il> Cc: Bjorn Helgaas <bhelgaas@google.com> Cc: Krzysztof Halasa <khc@pm.waw.pl> Cc: Mike Rapoport <mike@compulab.co.il> Cc: Haojian Zhuang <haojian.zhuang@gmail.com> Cc: Eric Miao <eric.y.miao@gmail.com>
2012-07-30ARM: dma-mapping: add support for dma_get_sgtable()Marek Szyprowski1-0/+1
This patch adds support for dma_get_sgtable() function which is required to let drivers to share the buffers allocated by DMA-mapping subsystem. Generic implementation based on virt_to_page() is not suitable for ARM dma-mapping subsystem. Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com> Reviewed-by: Kyungmin Park <kyungmin.park@samsung.com>
2012-06-13ARM: dma-mapping: fix debug messages in dmabounce codeMarek Szyprowski1-8/+8
This patch fixes the usage of uninitialized variables in dmabounce code intoduced by commit a227fb92 ('ARM: dma-mapping: remove offset parameter to prepare for generic dma_ops'): arch/arm/common/dmabounce.c: In function ‘dmabounce_sync_for_device’: arch/arm/common/dmabounce.c:409: warning: ‘off’ may be used uninitialized in this function arch/arm/common/dmabounce.c:407: note: ‘off’ was declared here arch/arm/common/dmabounce.c: In function ‘dmabounce_sync_for_cpu’: arch/arm/common/dmabounce.c:369: warning: ‘off’ may be used uninitialized in this function arch/arm/common/dmabounce.c:367: note: ‘off’ was declared here Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
2012-05-25Merge branch 'for-linus' of ↵Linus Torvalds1-19/+65
git://git.linaro.org/people/mszyprowski/linux-dma-mapping Pull CMA and ARM DMA-mapping updates from Marek Szyprowski: "These patches contain two major updates for DMA mapping subsystem (mainly for ARM architecture). First one is Contiguous Memory Allocator (CMA) which makes it possible for device drivers to allocate big contiguous chunks of memory after the system has booted. The main difference from the similar frameworks is the fact that CMA allows to transparently reuse the memory region reserved for the big chunk allocation as a system memory, so no memory is wasted when no big chunk is allocated. Once the alloc request is issued, the framework migrates system pages to create space for the required big chunk of physically contiguous memory. For more information one can refer to nice LWN articles: - 'A reworked contiguous memory allocator': http://lwn.net/Articles/447405/ - 'CMA and ARM': http://lwn.net/Articles/450286/ - 'A deep dive into CMA': http://lwn.net/Articles/486301/ - and the following thread with the patches and links to all previous versions: https://lkml.org/lkml/2012/4/3/204 The main client for this new framework is ARM DMA-mapping subsystem. The second part provides a complete redesign in ARM DMA-mapping subsystem. The core implementation has been changed to use common struct dma_map_ops based infrastructure with the recent updates for new dma attributes merged in v3.4-rc2. This allows to use more than one implementation of dma-mapping calls and change/select them on the struct device basis. The first client of this new infractructure is dmabounce implementation which has been completely cut out of the core, common code. The last patch of this redesign update introduces a new, experimental implementation of dma-mapping calls on top of generic IOMMU framework. This lets ARM sub-platform to transparently use IOMMU for DMA-mapping calls if one provides required IOMMU hardware. For more information please refer to the following thread: http://www.spinics.net/lists/arm-kernel/msg175729.html The last patch merges changes from both updates and provides a resolution for the conflicts which cannot be avoided when patches have been applied on the same files (mainly arch/arm/mm/dma-mapping.c)." Acked by Andrew Morton <akpm@linux-foundation.org>: "Yup, this one please. It's had much work, plenty of review and I think even Russell is happy with it." * 'for-linus' of git://git.linaro.org/people/mszyprowski/linux-dma-mapping: (28 commits) ARM: dma-mapping: use PMD size for section unmap cma: fix migration mode ARM: integrate CMA with DMA-mapping subsystem X86: integrate CMA with DMA-mapping subsystem drivers: add Contiguous Memory Allocator mm: trigger page reclaim in alloc_contig_range() to stabilise watermarks mm: extract reclaim code from __alloc_pages_direct_reclaim() mm: Serialize access to min_free_kbytes mm: page_isolation: MIGRATE_CMA isolation functions added mm: mmzone: MIGRATE_CMA migration type added mm: page_alloc: change fallbacks array handling mm: page_alloc: introduce alloc_contig_range() mm: compaction: export some of the functions mm: compaction: introduce isolate_freepages_range() mm: compaction: introduce map_pages() mm: compaction: introduce isolate_migratepages_range() mm: page_alloc: remove trailing whitespace ARM: dma-mapping: add support for IOMMU mapper ARM: dma-mapping: use alloc, mmap, free from dma_ops ARM: dma-mapping: remove redundant code and do the cleanup ... Conflicts: arch/x86/include/asm/dma-mapping.h
2012-05-22Merge tag 'cleanup' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-socLinus Torvalds2-509/+0
Pull first batch of arm-soc cleanups from Olof Johansson: "These cleanups are basically all over the place. The idea is to collect changes with minimal impact but large number of changes so we can avoid them from distracting in the diffstat in the other series. A significant number of lines get removed here, in particular because the ixp2000 and ixp23xx platforms get removed. These have never been extremely popular and have fallen into disuse over time with no active maintainer taking care of them. The u5500 soc never made it into a product, so we are removing it from the ux500 platform. Many good cleanups also went into the at91 and omap platforms, as has been the case for a number of releases." Trivial modify-delete conflicts in arch/arm/mach-{ixp2000,ixp23xx} * tag 'cleanup' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (152 commits) ARM: clps711x: Cleanup IRQ handling ARM clps711x: Removed unused header mach/time.h ARM: clps711x: Added note about support EP731x CPU to Kconfig ARM: clps711x: Added missing register definitions ARM: clps711x: Used own subarch directory for store header file Dove: Fix Section mismatch warnings ARM: orion5x: ts78xx debugging changes ARM: orion5x: remove PM dependency from ts78xx ARM: orion5x: ts78xx fix NAND resource off by one ARM: orion5x: ts78xx whitespace cleanups Orion5x: Fix Section mismatch warnings Orion5x: Fix warning: struct pci_dev declared inside paramter list ARM: clps711x: Combine header files into one for clps711x-targets ARM: S3C24XX: Use common macro to define resources on mach-qt2410.c ARM: S3C24XX: Use common macro to define resources on mach-osiris.c ARM: EXYNOS: Adapt to cpuidle core time keeping and irq enable ARM: S5PV210: Use common macro to define resources on mach-smdkv210.c ARM: S5PV210: Use common macro to define resources on dev-audio.c ARM: S5PC100: Use common macro to define resources on dev-audio.c ARM: S5P64X0: Use common macro to define resources on dev-audio.c ...
2012-05-21Merge branch 'misc' into for-linusRussell King1-25/+31
Conflicts: arch/arm/kernel/ptrace.c
2012-05-21ARM: dma-mapping: use alloc, mmap, free from dma_opsMarek Szyprowski1-0/+3
This patch converts dma_alloc/free/mmap_{coherent,writecombine} functions to use generic alloc/free/mmap methods from dma_map_ops structure. A new DMA_ATTR_WRITE_COMBINE DMA attribute have been introduced to implement writecombine methods. Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com> Acked-by: Kyungmin Park <kyungmin.park@samsung.com> Acked-by: Arnd Bergmann <arnd@arndb.de> Tested-By: Subash Patel <subash.ramaswamy@linaro.org>
2012-05-21ARM: dma-mapping: move all dma bounce code to separate dma ops structureMarek Szyprowski1-13/+49
This patch removes dma bounce hooks from the common dma mapping implementation on ARM architecture and creates a separate set of dma_map_ops for dma bounce devices. Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com> Acked-by: Kyungmin Park <kyungmin.park@samsung.com> Tested-By: Subash Patel <subash.ramaswamy@linaro.org>
2012-05-21ARM: dma-mapping: remove offset parameter to prepare for generic dma_opsMarek Szyprowski1-3/+10
This patch removes the need for the offset parameter in dma bounce functions. This is required to let dma-mapping framework on ARM architecture to use common, generic dma_map_ops based dma-mapping helpers. Background and more detailed explaination: dma_*_range_* functions are available from the early days of the dma mapping api. They are the correct way of doing a partial syncs on the buffer (usually used by the network device drivers). This patch changes only the internal implementation of the dma bounce functions to let them tunnel through dma_map_ops structure. The driver api stays unchanged, so driver are obliged to call dma_*_range_* functions to keep code clean and easy to understand. The only drawback from this patch is reduced detection of the dma api abuse. Let us consider the following code: dma_addr = dma_map_single(dev, ptr, 64, DMA_TO_DEVICE); dma_sync_single_range_for_cpu(dev, dma_addr+16, 0, 32, DMA_TO_DEVICE); Without the patch such code fails, because dma bounce code is unable to find the bounce buffer for the given dma_address. After the patch the above sync call will be equivalent to: dma_sync_single_range_for_cpu(dev, dma_addr, 16, 32, DMA_TO_DEVICE); which succeeds. I don't consider this as a real problem, because DMA API abuse should be caught by debug_dma_* function family. This patch lets us to simplify the internal low-level implementation without chaning the driver visible API. Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com> Acked-by: Kyungmin Park <kyungmin.park@samsung.com> Tested-By: Subash Patel <subash.ramaswamy@linaro.org>
2012-05-21ARM: dma-mapping: introduce DMA_ERROR_CODE constantMarek Szyprowski1-3/+3
Replace all uses of ~0 with DMA_ERROR_CODE, what should make the code easier to read. Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com> Acked-by: Kyungmin Park <kyungmin.park@samsung.com> Tested-By: Subash Patel <subash.ramaswamy@linaro.org>
2012-05-13ARM: PCI: provide a default bus scan implementationRussell King2-16/+2
Most PCI implementations perform simple root bus scanning. Rather than having each group of platforms provide a duplicated bus scan function, provide the PCI configuration ops structure via the hw_pci structure, and call the root bus scanning function from core ARM PCI code. Acked-by: Krzysztof Hałasa <khc@pm.waw.pl> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2012-04-25ARM: 7395/1: VIC: use the domain mapping function to assign handlersLinus Walleij1-20/+24
This removes the internal functions for assigning IRQ handlers to each interrupt in favor of using the internal map iterator in the irq domain code. Cc: Will Deacon <will.deacon@arm.com> Cc: Grant Likely <grant.likely@secretlab.ca> Cc: Rob Herring <rob.herring@calxeda.com> Acked-by: Jamie Iles <jamie@jamieiles.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2012-04-25ARM: 7394/1: VIC: respect list of valid sourcesLinus Walleij1-5/+7
The current IRQ domain implementation in the VIC allocates 32 interrupts for each VIC instance no matter whether the controller actually use all the IRQs or not. Alter this so we only allocate a domain up until the last IRQ marked valid. Cc: Will Deacon <will.deacon@arm.com> Cc: Grant Likely <grant.likely@secretlab.ca> Cc: Rob Herring <rob.herring@calxeda.com> Acked-by: Jamie Iles <jamie@jamieiles.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2012-04-22Merge tag 'at91-3.5-cleanup' of git://github.com/at91linux/linux-at91 into ↵Arnd Bergmann1-5/+4
next/cleanup Nicolas Ferre <nicolas.ferre@atmel.com> writes: First batch of AT91 cleanup for 3.5 kernel. - The biggest improvement of this series is the ability to compile several AT91 SoCs in one kernel image. For now on it's limited to the DT-enabled boards but we can compile all the core together. - The Kconfig series is stacked before other patches as it is simple and non-intrusive. Its goal is to remove too restrictive dependencies on SoC names. This will allow to add support for newer SoC seamlessly. - Some very "cosmetic" Kconfig changes are also added (entry names, comments, etc.). * tag 'at91-3.5-cleanup' of git://github.com/at91linux/linux-at91: (19 commits) ARM: at91: add defconfig for device tree ARM: at91/dt: do not specify the board any more ARN: at91: introduce SOC_AT91xxx define to allow to compile SoC core support ARM: at91: add SOC_AT91SAM9 kconfig option to factorise select ARM: at91: pm select memory controler at runtime ARM: at91: move at91_init_leds to board init ARM: at91: do not pin mux the UARTs in init_early ARM: at91: drop at91_set_serial_console ARM: at91: uncompress: autodetect the uart to use ARM: at91: uncompress Store UART address in a variable hwrng: Kconfig: remove dependency for atmel-rng driver Input: Kconfig: remove dependency for atmel_tsadcc driver rtc: Kconfig: remove dependency for AT91 rtc driver ARM: at91/Kconfig: website link for AT91SAM9G20-EK ARM: at91/Kconfig: add AT91SAM9x5 family to AT91_EARLY_DBGU0 entry ARM: at91/Kconfig: add clarifications to AT91SAM9M10G45-EK entry ARM: at91/Kconfig: add comment to at91sam9x5 family entry ARM: at91/Kconfig: change at91sam9g45 entry ARM: at91: change AT91 Kconfig entry comment Also updates the cleanup branch to v3.4-rc3. Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2012-04-10ARM: 7377/1: vic: re-read status register before dispatching each IRQ handlerWill Deacon1-5/+4
handle_IRQ may briefly cause interrupts to be re-enabled during soft IRQ processing on the exit path, leading to nested handling of VIC interrupts. Since the current code does not re-read the VIC_IRQ_STATUS register, this can lead to multiple invocations of the same interrupt handler and spurious interrupts to be reported. This patch changes the VIC interrupt dispatching code to re-read the status register each time, avoiding duplicate invocations of the same handler. Acked-and-Tested-by: H Hartley Sweeten <hsweeten@visionengravers.com> Reviewed-by: Jamie Iles <jamie@jamieiles.com> Signed-off-by: Will Deacon <will.deacon@arm.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2012-04-06ARM: remove ixp23xx and ixp2000 platformsRob Herring2-509/+0
ixp2xxx platforms have had no real changes since ~2006 and the maintainer has said on irc that they can be removed: 13:05 < nico> do you still care about ixp2000? 13:22 < lennert> not really, no 13:58 < nico> do you think we could remove it from the kernel tree? 14:01 < lennert> go for it, and remove ixp23xx too while you're at it Removing will help simplify ARM consolidation in general and PCI re-work specifically. Signed-off-by: Rob Herring <rob.herring@calxeda.com> Cc: Randy Dunlap <rdunlap@xenotime.net> Acked-by: Lennert Buytenhek <buytenh@wantstofly.org>
2012-03-29Merge branch 'for-linus' of git://git.linaro.org/people/rmk/linux-armLinus Torvalds1-7/+6
Pull more ARM updates from Russell King. This got a fair number of conflicts with the <asm/system.h> split, but also with some other sparse-irq and header file include cleanups. They all looked pretty trivial, though. * 'for-linus' of git://git.linaro.org/people/rmk/linux-arm: (59 commits) ARM: fix Kconfig warning for HAVE_BPF_JIT ARM: 7361/1: provide XIP_VIRT_ADDR for no-MMU builds ARM: 7349/1: integrator: convert to sparse irqs ARM: 7259/3: net: JIT compiler for packet filters ARM: 7334/1: add jump label support ARM: 7333/2: jump label: detect %c support for ARM ARM: 7338/1: add support for early console output via semihosting ARM: use set_current_blocked() and block_sigmask() ARM: exec: remove redundant set_fs(USER_DS) ARM: 7332/1: extract out code patch function from kprobes ARM: 7331/1: extract out insn generation code from ftrace ARM: 7330/1: ftrace: use canonical Thumb-2 wide instruction format ARM: 7351/1: ftrace: remove useless memory checks ARM: 7316/1: kexec: EOI active and mask all interrupts in kexec crash path ARM: Versatile Express: add NO_IOPORT ARM: get rid of asm/irq.h in asm/prom.h ARM: 7319/1: Print debug info for SIGBUS in user faults ARM: 7318/1: gic: refactor irq_start assignment ARM: 7317/1: irq: avoid NULL check in for_each_irq_desc loop ARM: 7315/1: perf: add support for the Cortex-A7 PMU ...
2012-03-29Merge branch 'next' of git://git.infradead.org/users/vkoul/slave-dmaLinus Torvalds3-1964/+0
Pull slave-dmaengine update from Vinod Koul: "This includes the cookie cleanup by Russell, the addition of context parameter for dmaengine APIs, more arm dmaengine driver cleanup by moving code to dmaengine, this time for imx by Javier and pl330 by Boojin along with the usual driver fixes." Fix up some fairly trivial conflicts with various other cleanups. * 'next' of git://git.infradead.org/users/vkoul/slave-dma: (67 commits) dmaengine: imx: fix the build failure on x86_64 dmaengine: i.MX: Fix merge of cookie branch. dmaengine: i.MX: Add support for interleaved transfers. dmaengine: imx-dma: use 'dev_dbg' and 'dev_warn' for messages. dmaengine: imx-dma: remove 'imx_dmav1_baseaddr' and 'dma_clk'. dmaengine: imx-dma: remove unused arg of imxdma_sg_next. dmaengine: imx-dma: remove internal structure. dmaengine: imx-dma: remove 'resbytes' field of 'internal' structure. dmaengine: imx-dma: remove 'in_use' field of 'internal' structure. dmaengine: imx-dma: remove sg member from internal structure. dmaengine: imx-dma: remove 'imxdma_setup_sg_hw' function. dmaengine: imx-dma: remove 'imxdma_config_channel_hw' function. dmaengine: imx-dma: remove 'imxdma_setup_mem2mem_hw' function. dmaengine: imx-dma: remove dma_mode member of internal structure. dmaengine: imx-dma: remove data member from internal structure. dmaengine: imx-dma: merge old dma-v1.c with imx-dma.c dmaengine: at_hdmac: add slave config operation dmaengine: add context parameter to prep_slave_sg and prep_dma_cyclic dmaengine/dma_slave: introduce inline wrappers dma: imx-sdma: Treat firmware messages as warnings instead of erros ...
2012-03-28Merge tag 'split-asm_system_h-for-linus-20120328' of ↵Linus Torvalds1-1/+0
git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-asm_system Pull "Disintegrate and delete asm/system.h" from David Howells: "Here are a bunch of patches to disintegrate asm/system.h into a set of separate bits to relieve the problem of circular inclusion dependencies. I've built all the working defconfigs from all the arches that I can and made sure that they don't break. The reason for these patches is that I recently encountered a circular dependency problem that came about when I produced some patches to optimise get_order() by rewriting it to use ilog2(). This uses bitops - and on the SH arch asm/bitops.h drags in asm-generic/get_order.h by a circuituous route involving asm/system.h. The main difficulty seems to be asm/system.h. It holds a number of low level bits with no/few dependencies that are commonly used (eg. memory barriers) and a number of bits with more dependencies that aren't used in many places (eg. switch_to()). These patches break asm/system.h up into the following core pieces: (1) asm/barrier.h Move memory barriers here. This already done for MIPS and Alpha. (2) asm/switch_to.h Move switch_to() and related stuff here. (3) asm/exec.h Move arch_align_stack() here. Other process execution related bits could perhaps go here from asm/processor.h. (4) asm/cmpxchg.h Move xchg() and cmpxchg() here as they're full word atomic ops and frequently used by atomic_xchg() and atomic_cmpxchg(). (5) asm/bug.h Move die() and related bits. (6) asm/auxvec.h Move AT_VECTOR_SIZE_ARCH here. Other arch headers are created as needed on a per-arch basis." Fixed up some conflicts from other header file cleanups and moving code around that has happened in the meantime, so David's testing is somewhat weakened by that. We'll find out anything that got broken and fix it.. * tag 'split-asm_system_h-for-linus-20120328' of git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-asm_system: (38 commits) Delete all instances of asm/system.h Remove all #inclusions of asm/system.h Add #includes needed to permit the removal of asm/system.h Move all declarations of free_initmem() to linux/mm.h Disintegrate asm/system.h for OpenRISC Split arch_align_stack() out from asm-generic/system.h Split the switch_to() wrapper out of asm-generic/system.h Move the asm-generic/system.h xchg() implementation to asm-generic/cmpxchg.h Create asm-generic/barrier.h Make asm-generic/cmpxchg.h #include asm-generic/cmpxchg-local.h Disintegrate asm/system.h for Xtensa Disintegrate asm/system.h for Unicore32 [based on ver #3, changed by gxt] Disintegrate asm/system.h for Tile Disintegrate asm/system.h for Sparc Disintegrate asm/system.h for SH Disintegrate asm/system.h for Score Disintegrate asm/system.h for S390 Disintegrate asm/system.h for PowerPC Disintegrate asm/system.h for PA-RISC Disintegrate asm/system.h for MN10300 ...
2012-03-28Disintegrate asm/system.h for ARMDavid Howells1-1/+0
Disintegrate asm/system.h for ARM. Signed-off-by: David Howells <dhowells@redhat.com> cc: Russell King <linux@arm.linux.org.uk> cc: linux-arm-kernel@lists.infradead.org
2012-03-27Merge branch 'platforms' of git://git.linaro.org/people/rmk/linux-armLinus Torvalds4-195/+185
Pull ARM platform updates from Russell King: "This covers platform stuff for platforms I have a direct interest in (iow, I have the hardware). Essentially: - as we no longer support any other Acorn platforms other than RiscPC anymore, we can collect all that code into mach-rpc. - convert Acorn expansion card stuff to use IRQ allocation functions, and get rid of NO_IRQ from there. - cleanups to the ebsa110 platform to move some private stuff out of its header files. - large amount of SA11x0 updates: - conversion of private DMA implementation to DMA engine support (this actually gives us greater flexibility in drivers over the old API.) - re-worked ucb1x00 updates - convert to genirq, remove sa11x0 dependencies, fix various minor issues - move platform specific sa11x0 framebuffer data into platform files in arch/arm instead of keeping this in the driver itself - update sa11x0 IrDA driver for DMA engine, and allow it to use DMA for SIR transmissions as well as FIR - rework sa1111 support for genirq, and irq allocation - fix sa1111 IRQ support so it works again - use sparse IRQ support After this, I have one more pull request remaining from my current set, which I think is going to be the most problematical as it generates 8 conflicts." Fixed up the trivial conflict in arch/arm/mach-rpc/Makefile as per Russell. * 'platforms' of git://git.linaro.org/people/rmk/linux-arm: (125 commits) ARM: 7343/1: sa11x0: convert to sparse IRQ ARM: 7342/2: sa1100: prepare for sparse irq conversion ARM: 7341/1: input: prepare jornada720 keyboard and ts for sa11x0 sparse irq ARM: 7340/1: rtc: sa1100: include mach/irqs.h instead of asm/irq.h ARM: sa11x0: remove unused DMA controller definitions ARM: sa11x0: remove old SoC private DMA driver USB: sa1111: add hcd .reset method USB: sa1111: add OHCI shutdown methods USB: sa1111: reorganize ohci-sa1111.c USB: sa1111: get rid of nasty printk(KERN_DEBUG "%s: ...", __FILE__) USB: sa1111: sparse and checkpatch cleanups ARM: sa11x0: don't static map sa1111 ARM: sa1111: use dev_err() rather than printk() ARM: sa1111: cleanup sub-device registration and unregistration ARM: sa1111: only setup DMA for DMA capable devices ARM: sa1111: register sa1111 devices with dmabounce in bus notifier ARM: sa1111: move USB interface register definitions to ohci-sa1111.c ARM: sa1111: move PCMCIA interface register definitions to sa1111_generic.c ARM: sa1111: move PS/2 interface register definitions to sa1111p2.c ARM: sa1111: delete unused physical GPIO register definitions ...
2012-03-27Merge tag 'soc' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-socLinus Torvalds1-1/+16
Pull "ARM: SoC specific updates" from Arnd Bergmann: "These changes are all specific to an soc family or the code for one soc. Lots of work for Tegra3 this time, but also a lot of other platforms. There will be another (smaller) set of soc patches later in the merge window for stuff that has dependencies on external trees or that was sent just before the merge window opened. The asoc tree added a few devices to the i.mx platform, which conflict with other devices added in the same place here. The tegra Makefile conflicts between a number of branches, mostly because of changes regarding localtimer.c, which was removed in the end. Signed-off-by: Arnd Bergmann <arnd@arndb.de>" Fix up some trivial conflicts, including the mentioned Tegra Makefile. * tag 'soc' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (51 commits) ARM: EXYNOS: fix cycle count for periodic mode of clock event timers ARM: EXYNOS: add support JPEG ARM: EXYNOS: Add DMC1, allow PPMU access for DMC ARM: SAMSUNG: Correct MIPI-CSIS io memory resource definition ARM: SAMSUNG: fix __init attribute on regarding s3c_set_platdata() ARM: SAMSUNG: Add __init attribute to samsung_bl_set() ARM: S5PV210: Add usb otg phy control ARM: S3C64XX: Add usb otg phy control ARM: EXYNOS: Enable l2 configuration through device tree ARM: EXYNOS: remove useless code to save/restore L2 ARM: EXYNOS: save L2 settings during bootup ARM: S5P: add L2 early resume code ARM: EXYNOS: Add support AFTR mode on EXYNOS4210 ARM: mx35: Setup the AIPS registers ARM: mx5: Use common function for configuring AIPS ARM: mx3: Setup AIPS registers ARM: mx3: Let mx31 and mx35 enter in LPM mode in WFI ARM: defconfig: imx_v6_v7: build in REGULATOR_FIXED_VOLTAGE ARM: imx: update imx_v6_v7_defconfig ARM: tegra: Demote EMC clock inconsistency BUG to WARN ...
2012-03-25Merge branches 'acorn', 'ebsa110' and 'sa11x0' into platformsRussell King1-96/+185
2012-03-24ARM: sa1111: use dev_err() rather than printk()Russell King1-1/+1
Use dev_err() to report device specific errors rather than printk(). Acked-by: Nicolas Pitre <nico@linaro.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2012-03-24ARM: sa1111: cleanup sub-device registration and unregistrationRussell King1-11/+16
Move the releasing of resources out of the release function - this allows a cleaner and more conventional arrangement of the registration failure paths and a saner unregistration process for these devices. Acked-by: Nicolas Pitre <nico@linaro.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2012-03-24ARM: sa1111: only setup DMA for DMA capable devicesRussell King1-3/+6
It's pointless registering the PS/2 interfaces with the dmabounce code when there's no DMA support for these in hardware, so only setup the DMA masks for two subdevices which support DMA - the OHCI and SAC. Acked-by: Nicolas Pitre <nico@linaro.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2012-03-24ARM: sa1111: register sa1111 devices with dmabounce in bus notifierRussell King1-55/+74
Use the bus notifier to register sa1111 devices with dmabounce, rather than after the device has been registered, potentially racing with driver binding. Acked-by: Nicolas Pitre <nico@linaro.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2012-03-24ARM: sa1111: provide a generic way to prevent devices from registeringRussell King1-5/+2
Some platforms don't want certain devices to be registered, because, eg, the interface is not wired. Provide a way for platforms to prevent various devices from being registered via a devid bitmask in the platform data. Acked-by: Nicolas Pitre <nico@linaro.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2012-03-24ARM: 7318/1: gic: refactor irq_start assignmentWill Deacon1-7/+6
The irq_start and hwirq_base assignment code is fairly hairy and ended up being difficult to read following a conflict resolution for 3.2. This patch rearranges the code slightly to make it easier to read. Cc: Marc Zyngier <marc.zyngier@arm.com> Signed-off-by: Will Deacon <will.deacon@arm.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2012-03-24ARM: riscpc: move time-acorn.c to mach-rpcRussell King3-99/+0
Nothing but RiscPC makes use of the Acorn timekeeping code, so move it into mach-rpc. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2012-03-23Merge branch 'linux-next' of ↵Linus Torvalds1-2/+2
git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci Pull PCI changes (including maintainer change) from Jesse Barnes: "This pull has some good cleanups from Bjorn and Yinghai, as well as some more code from Yinghai to better handle resource re-allocation when enabled. There's also a new initcall_debug feature from Arjan which will print out quirk timing information to help identify slow quirks for fixing or refinement (Yinghai sent in a few patches to do just that once the new debug code landed). Beyond that, I'm handing off PCI maintainership to Bjorn Helgaas. He's been a core PCI and Linux contributor for some time now, and has kindly volunteered to take over. I just don't feel I have the time for PCI review and work that it deserves lately (I've taken on some other projects), and haven't been as responsive lately as I'd like, so I approached Bjorn asking if he'd like to manage things. He's going to give it a try, and I'm confident he'll do at least as well as I have in keeping the tree managed, patches flowing, and keeping things stable." Fix up some fairly trivial conflicts due to other cleanups (mips device resource fixup cleanups clashing with list handling cleanup, ppc iseries removal clashing with pci_probe_only cleanup etc) * 'linux-next' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci: (112 commits) PCI: Bjorn gets PCI hotplug too PCI: hand PCI maintenance over to Bjorn Helgaas unicore32/PCI: move <asm-generic/pci-bridge.h> include to asm/pci.h sparc/PCI: convert devtree and arch-probed bus addresses to resource powerpc/PCI: allow reallocation on PA Semi powerpc/PCI: convert devtree bus addresses to resource powerpc/PCI: compute I/O space bus-to-resource offset consistently arm/PCI: don't export pci_flags PCI: fix bridge I/O window bus-to-resource conversion x86/PCI: add spinlock held check to 'pcibios_fwaddrmap_lookup()' PCI / PCIe: Introduce command line option to disable ARI PCI: make acpihp use __pci_remove_bus_device instead PCI: export __pci_remove_bus_device PCI: Rename pci_remove_behind_bridge to pci_stop_and_remove_behind_bridge PCI: Rename pci_remove_bus_device to pci_stop_and_remove_bus_device PCI: print out PCI device info along with duration PCI: Move "pci reassigndev resource alignment" out of quirks.c PCI: Use class for quirk for usb host controller fixup PCI: Use class for quirk for ti816x class fixup PCI: Use class for quirk for intel e100 interrupt fixup ...
2012-03-21Merge tag 'irqdomain-for-linus' of git://git.secretlab.ca/git/linux-2.6Linus Torvalds2-64/+47
Pull irq_domain support for all architectures from Grant Likely: "Generialize powerpc's irq_host as irq_domain This branch takes the PowerPC irq_host infrastructure (reverse mapping from Linux IRQ numbers to hardware irq numbering), generalizes it, renames it to irq_domain, and makes it available to all architectures. Originally the plan has been to create an all-new irq_domain implementation which addresses some of the powerpc shortcomings such as not handling 1:1 mappings well, but doing that proved to be far more difficult and invasive than generalizing the working code and refactoring it in-place. So, this branch rips out the 'new' irq_domain and replaces it with the modified powerpc version (in a fully bisectable way of course). It converts all users over to the new API and makes irq_domain selectable on any architecture. No architecture is forced to enable irq_domain, but the infrastructure is required for doing OpenFirmware style irq translations. It will even work on SPARC even though SPARC has it's own mechanism for translating irqs at boot time. MIPS, microblaze, embedded x86 and c6x are converted too. The resulting irq_domain code is probably still too verbose and can be optimized more, but that can be done incrementally and is a task for follow-on patches." * tag 'irqdomain-for-linus' of git://git.secretlab.ca/git/linux-2.6: (31 commits) dt: fix twl4030 for non-dt compile on x86 mfd: twl-core: Add IRQ_DOMAIN dependency devicetree: Add empty of_platform_populate() for !CONFIG_OF_ADDRESS (sparc) irq_domain: Centralize definition of irq_dispose_mapping() irq_domain/mips: Allow irq_domain on MIPS irq_domain/x86: Convert x86 (embedded) to use common irq_domain ppc-6xx: fix build failure in flipper-pic.c and hlwd-pic.c irq_domain/microblaze: Convert microblaze to use irq_domains irq_domain/powerpc: Replace custom xlate functions with library functions irq_domain/powerpc: constify irq_domain_ops irq_domain/c6x: Use library of xlate functions irq_domain/c6x: constify irq_domain structures irq_domain/c6x: Convert c6x to use generic irq_domain support. irq_domain: constify irq_domain_ops irq_domain: Create common xlate functions that device drivers can use irq_domain: Remove irq_domain_add_simple() irq_domain: Remove 'new' irq_domain in favour of the ppc one mfd: twl-core.c: Fix the number of interrupts managed by twl4030 of/address: add empty static inlines for !CONFIG_OF irq_domain: Add support for base irq and hwirq in legacy mappings ...
2012-03-08DMA: PL330: Merge PL330 driver into drivers/dma/Boojin Kim3-1963/+0
Currently there were two part of DMAC PL330 driver for support old styled s3c-pl330 which has been merged into drivers/dma/pl330.c driver. Actually, there is no reason to separate them now. Basically this patch merges arch/arm/common/pl330.c into drivers/dma/pl330.c driver and removes useless exported symbol, externed function and so on. The newer pl330 driver tested on SMDKV310 and SMDK4212 boards Cc: Jassi Brar <jassisinghbrar@gmail.com> Cc: Russell King <rmk+kernel@arm.linux.org.uk> Acked-by: Linus Walleij <linus.walleij@linaro.org> Acked-by: Vinod Koul <vinod.koul@intel.com> Signed-off-by: Boojin Kim <boojin.kim@samsung.com> Signed-off-by: Kukjin Kim <kgene.kim@samsung.com> Acked-by: Jassi Brar <jassisinghbrar@gmail.com> Signed-off-by: Vinod Koul <vinod.koul@linux.intel.com>
2012-02-28Merge branch 'imx/defconfig' of ↵Arnd Bergmann2-8/+2
git://git.linaro.org/people/shawnguo/linux-2.6 into next/soc * 'imx/defconfig' of git://git.linaro.org/people/shawnguo/linux-2.6: (2 commits) ARM: defconfig: imx_v6_v7: build in REGULATOR_FIXED_VOLTAGE ARM: imx: update imx_v6_v7_defconfig (upadte to v3.3-rc5)
2012-02-23arm/PCI: get rid of device resource fixupsBjorn Helgaas1-2/+2
Tell the PCI core about host bridge address translation so it can take care of bus-to-resource conversion for us. CC: Russell King <linux@arm.linux.org.uk> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
2012-02-21ARM/PCI: Remove ARM's duplicate definition of 'pcibios_max_latency'Myron Stowe1-7/+0
The patch series to re-factor PCI's 'latency timer' setup (re: http://marc.info/?l=linux-kernel&m=131983853831049&w=2) forgot to remove the ARM specific definition of 'pcibios_max_latency' once such had been moved into the pci core resulting in ARM related compile errors - drivers/built-in.o:(.data+0x230): multiple definition of `pcibios_max_latency' arch/arm/common/built-in.o:(.data+0x40c): first defined here make[1]: *** [vmlinux.o] Error 1 In the series, patch 2/16 (commit 168c8619fd8) converted the ARM specific version of 'pcibios_set_master()' to a non-inlined version. This was done in preperation for hosting it up into PCI's core, which was done in patch 10/16 (commit 96c5590058d) of the series (and where the removal of ARM's 'pcibios_max_latency' was overlooked). Reported-by: Russell King <rmk+kernel@arm.linux.org.uk> Signed-off-by: Myron Stowe <myron.stowe@redhat.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2012-02-16irq_domain/c6x: constify irq_domain structuresGrant Likely1-1/+1
Signed-off-by: Grant Likely <grant.likely@secretlab.ca> Cc: Mark Salter <msalter@redhat.com> Cc: Thomas Gleixner <tglx@linutronix.de>
2012-02-16irq_domain: Remove 'new' irq_domain in favour of the ppc oneGrant Likely2-59/+42
This patch removes the simplistic implementation of irq_domains and enables the powerpc infrastructure for all irq_domain users. The powerpc infrastructure includes support for complex mappings between Linux and hardware irq numbers, and can manage allocation of irq_descs. This patch also converts the few users of irq_domain_add()/irq_domain_del() to call irq_domain_add_legacy() instead. v3: Fix bug that set up too many irqs in translation range. v2: Fix removal of irq_alloc_descs() call in gic driver Signed-off-by: Grant Likely <grant.likely@secretlab.ca> Cc: Rob Herring <rob.herring@calxeda.com> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Milton Miller <miltonm@bga.com> Tested-by: Olof Johansson <olof@lixom.net>
2012-02-15ARM: 7326/2: PL330: fix null pointer dereference in pl330_chan_ctrl()Javi Merino1-1/+2
This fixes the thrd->req_running field being accessed before thrd is checked for null. The error was introduced in abb959f: ARM: 7237/1: PL330: Fix driver freeze Reference: <1326458191-23492-1-git-send-email-mans.rullgard@linaro.org> Cc: stable@kernel.org Signed-off-by: Mans Rullgard <mans.rullgard@linaro.org> Acked-by: Javi Merino <javi.merino@arm.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>