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2010-10-18Merge branch 'hotplug' into develRussell King
Conflicts: arch/arm/kernel/head-common.S
2010-10-18Merge branches 'at91', 'dcache', 'ftrace', 'hwbpt', 'misc', 'mmci', 's3c', ↵Russell King
'st-ux' and 'unwind' into devel
2010-10-18ARM: 6441/1: ux500: The platform is not just based on early drop silicon ↵Srinidhi Kasagar
version. Update Kconfig text accordingly. Signed-off-by: srinidhi kasagar <srinidhi.kasagar@stericsson.com> Acked-by: Linus Walleij <linus.walleij@stericsson.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2010-10-11ARM: 6367/1: PL330: Accept different revisionJassi Brar
The driver can handle different revisions of the core which vary only minorly. Signed-off-by: Jassi Brar <jassi.brar@samsung.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2010-10-08ARM: add register documentation for __enable_mmuRussell King
Add some additional documentation on register usage in __enable_mmu to help complete the overall picture. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2010-10-08ARM: hotplug cpu: move secondary_startup, __enable_mmu to cpuinitRussell King
Move these two functions, both of which are required for secondary CPU booting, into the cpuinit section. Ensure bad processors call __error_p for better diagnostics, rather than just __error. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2010-10-08ARM: hotplug cpu: ensure that __enable_mmu is identity mappedRussell King
__enable_mmu is required to be executed in an identity mapped region to ensure that variances in CPUs do not cause a crash. We currently achieve this by assuming that it will be co-located with __create_page_tables. With hotplug CPU support, this assumption becomes invalid. Implement a better solution which ensures that it will be appropriately mapped no matter where it is placed. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2010-10-08ARM: cleanup lookup_machine_type data and ensure these are placed in __HEADRussell King
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2010-10-08ARM: hotplug cpu: move __error and __error_p to cpuinit sectionRussell King
__error and __error_p may be used by secondary CPUs, so these need to be in the cpuinit section. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2010-10-08ARM: move __mmap_switched, C-API functions to init sectionRussell King
Move these functions, which are only ever used during boot CPU initialization, to the init section. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2010-10-08ARM: cleanup boot cpu calling __mmap_switchedRussell King
This allows us to relocate __mmap_switched and associated data away from the head section. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2010-10-08ARM: hotplug cpu: Keep processor information, startup code & ↵Russell King
__lookup_processor_type When hotplug CPU is enabled, we need to keep the list of supported CPUs, their setup functions, and __lookup_processor_type in place so that we can find and initialize secondary CPUs. Move these into the __CPUINIT section. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2010-10-08ARM: hotplug cpu: setup 1:1 map for entire kernel image for secondary CPUsRussell King
Make the entire kernel image available for secondary CPUs rather than just the first MB of memory. This allows the startup code to appear in the cpuinit sections. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2010-10-08ARM: no need for nommu to jump through the hoops that mmu doesRussell King
nommu can jump directly to __mmap_switched without the absolute address branching which the mmuful kernel does. Acked-by: Greg Ungerer <gerg@uclinux.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2010-10-08ARM: 6369/1: Update RealView SMP defconfigLinus Walleij
This patches the condensed RealView SMP defconfig activating the same 2.6.36 features mentioned in the vanilla RealView defconfig patch submitted earlier. Signed-off-by: Linus Walleij <linus.walleij@stericsson.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2010-10-08ARM: 6365/1: Update RealView defconfigLinus Walleij
This patches the condensed RealView defconfig activating some stuff that has been missing from this config for some time and some stuff that was merged in the 2.6.36 merge window: - The new character LCD driver is enabled - The Versatile I2C is enabled - The PL022 SPI driver is enabled - gpiolib is enabled (and makes MMC detection work properly) - The new LEDs code is enabled with a heartbeat trigger - The RTC class is enabled, and the PL031 RTC (onchip) and the offchip DS1307 on I2C is enabled Signed-off-by: Linus Walleij <linus.walleij@stericsson.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2010-10-08ARM: vmlinux.lds: Move unwind tables into _stext.._etextRussell King
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2010-10-08ARM: vmlinux.lds: Refer to start of .data using _sdata rather than _dataRussell King
Use _sdata as the start of the data section, rather than _data. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2010-10-08ARM: 6428/1: add cpu_idle_wait() to support CPUidle on SMP systems.Kevin Hilman
In order for CPUidle to work on SMP systems, an implementation of cpu_idle_wait() is needed. This patch duplicates the x86 implementation of cpu_idle_wait() for ARM. Tested-by: Colin Cross <ccross@android.com> Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2010-10-08ARM: 6429/1: Check for is_smp for tlb_ops and cache_ops broadcastTony Lindgren
Broadcast should not be needed when running SMP kernel on UP systems. Also, this fixes an undefined instruction for SMP_ON_UP on earlier ARM cores without the extended CPUID_EXT_MMFR3 register. Signed-off-by: Tony Lindgren <tony@atomide.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2010-10-08ARM: 6431/1: fix isb regression on CPU < v7Linus Walleij
The kernel does not compile for my ARM926EJ-S system U300 due to the isb instruction inserted in generic assember statement from commit 8925ec4c530094b878e7e28a1fd78e7122afd973, "ARM: 6385/1: setup: detect aliasing I-cache when D-cache is non-aliasing" hey the isb is only available when assembling for v7 so let's use the generic isb() macro from setup.h instead. Acked-by: Will Deacon <will.deacon@arm.com> Signed-off-by: Linus Walleij <linus.walleij@stericsson.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2010-10-04ARM: 6386/1: flush_ptrace_access: invalidate correct I-cache aliasWill Deacon
copy_to_user_page can be used by access_process_vm to write to an executable page of a process using a mapping acquired by kmap. For systems with I-cache aliasing, flushing the I-cache using the Kernel mapping may leave stale data in the I-cache if the user mapping is of a different colour. This patch introduces a flush_icache_alias function to flush.c, which calls flush_icache_range with a mapping of the specified colour. flush_ptrace_access is then modified to call this new function instead of coherent_kern_range in the case of an aliasing I-cache and a non-aliasing D-cache. Signed-off-by: Will Deacon <will.deacon@arm.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2010-10-04ARM: 6385/1: setup: detect aliasing I-cache when D-cache is non-aliasingWill Deacon
Currently, the Kernel assumes that if a CPU has a non-aliasing D-cache then the I-cache is also non-aliasing. This may not be true on ARM cores from v6 onwards, which may have aliasing I-caches but non-aliasing D-caches. This patch adds a cpu_has_aliasing_icache function, which is called from cacheid_init and adds CACHEID_VIPT_I_ALIASING to the cacheid when appropriate. A utility macro, icache_is_vipt_aliasing(), is also provided. Signed-off-by: Will Deacon <will.deacon@arm.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2010-10-04ARM: 6366/1: Update U300 defconfigLinus Walleij
This mainly removes a lot of unused subsystems (as for the mainline drivers) in the U300 defconfig, switch of MMC debugging by default and enables debugfs on the builds. Once we merge the drivers we'll configure it on again. Signed-off-by: Linus Walleij <linus.walleij@stericsson.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2010-10-04ARM: 6393/1: AT91: Add flexibity board supportMaxim Osipov
This patch adds support for Flexibity Connect platform from http://www.flexibity.com/ (AT91SAM9260 based). Signed-off-by: Maxim Osipov <maxim.osipov@gmail.com> Acked-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com> Acked-by: Andrew Victor <linux@maxim.org.za> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2010-10-04ARM: 6405/1: Handle __flush_icache_all for CONFIG_SMP_ON_UPTony Lindgren
Do this by adding flush_icache_all to cache_fns for ARMv6 and 7. As flush_icache_all may neeed to be called from flush_kern_cache_all, add it as the first entry in the cache_fns. Note that now we can remove the ARM_ERRATA_411920 dependency to !SMP so it can be selected on UP ARMv6 processors, such as omap2. Signed-off-by: Tony Lindgren <tony@atomide.com> Signed-off-by: Anand Gadiyar <gadiyar@ti.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2010-10-04ARM: 6402/1: Don't send IPI in smp_send_stop if there's only one CPUTony Lindgren
No need to send IPI if there's one CPU, especially when booting systems with CONFIG_SMP_ON_UP that may not even support IPI. Signed-off-by: Tony Lindgren <tony@atomide.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2010-10-04ARM: Allow SMP kernels to boot on UP systemsRussell King
UP systems do not implement all the instructions that SMP systems have, so in order to boot a SMP kernel on a UP system, we need to rewrite parts of the kernel. Do this using an 'alternatives' scheme, where the kernel code and data is modified prior to initialization to replace the SMP instructions, thereby rendering the problematical code ineffectual. We use the linker to generate a list of 32-bit word locations and their replacement values, and run through these replacements when we detect a UP system. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2010-10-04ARM: Provide common header for hard_smp_processor_id()Russell King
Provide a common header to read the SMP CPU number from the MPIDR. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2010-10-04ARM: Simplify SMP/SCU/TWD dependenciesRussell King
All platforms which currently support SMP also support the ARM SCU and ARM TWD blocks, so it's pointless to make these config symbols conditional on the platform symbols which SMP is already conditional on. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2010-10-04ARM: 6349/1: sa1111: move __sa1111_probe() to .devinit.textUwe Kleine-König
__sa1111_probe is only called by sa1111_probe that lives in .devinit.text. So it's save to move the former to .devinit.text, too. Acked-by: Kristoffer Ericson <kristoffer.ericson@gmail.com> Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2010-10-04ARM: 6293/1: coresight: cosmetic fixesAlexander Shishkin
Use BIT() macro whenever it is sensible to do so. Cc: linux-arm-kernel@lists.infradead.org Cc: linux-kernel@vger.kernel.org Signed-off-by: Alexander Shishkin <virtuoso@slind.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2010-10-04ARM: 6291/1: coresight: move struct tracectx inside etm driverAlexander Shishkin
This is done so as to be able to make use of the coresight components' registers in assembler code (like omap sleep code). Also, there shouldn't be any users of this structure outside the etm driver. Cc: linux-arm-kernel@lists.infradead.org Cc: linux-kernel@vger.kernel.org Signed-off-by: Alexander Shishkin <virtuoso@slind.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2010-10-04ARM: 6418/1: ux500: rename DB8500 DMA event line macrosRabin Vincent
Change the DMA event line macros to have the name of the SoC. Also, have the event line number encoded in the macro since on DB5500 several event lines are present at multiple alternate numbers. Acked-by: Linus Walleij <linus.walleij@stericsson.com> Signed-off-by: Rabin Vincent <rabin.vincent@stericsson.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2010-10-04ARM: 6417/1: ux500: build configuration for DB5500 mbox and modem irq handlerLinus Walleij
This rounds of the DB5500 mailbox patches by adding the Kconfig options to enable the modem IRQs and mailboxes. Signed-off-by: Stefan Nilsson XK <stefan.xk.nilsson@stericsson.com> Signed-off-by: Linus Walleij <linus.walleij@stericsson.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2010-10-04ARM: 6415/1: ux500: DB5500 mailbox driverLinus Walleij
This is a driver for the mailboxes used to communicate with the DB5500 modem portions. Signed-off-by: Stefan Nilsson XK <stefan.xk.nilsson@stericsson.com> Signed-off-by: Linus Walleij <linus.walleij@stericsson.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2010-10-04ARM: 6414/1: ux500: DB5500 generic modem IRQ handlerLinus Walleij
This is a (threaded) IRQ handler for the modems that appear from the modem part of the DB5500 ASIC. Signed-off-by: Stefan Nilsson XK <stefan.xk.nilsson@stericsson.com> Signed-off-by: Linus Walleij <linus.walleij@stericsson.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2010-10-04ARM: 6413/1: ux500: resources for DB5500 mbox driver and modem irq handlerLinus Walleij
Platform resources found in the DB5500 for mailboxes and the modem IRQ controller. Signed-off-by: Stefan Nilsson XK <stefan.xk.nilsson@stericsson.com> Signed-off-by: Linus Walleij <linus.walleij@stericsson.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2010-09-28MN10300: Handle missing sys_cacheflush() when caching disabledDavid Howells
When caching is disabled on the MN10300 arch, the sys_cacheflush() function is removed by conditional stuff in the makefiles, but is still referred to by the syscall table. Provide a null version that just returns 0 when caching is disabled (or -EINVAL if the arguments are silly). Signed-off-by: David Howells <dhowells@redhat.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-09-28alpha: fix compile problem in arch/alpha/kernel/signal.cLinus Torvalds
Tssk. Apparently Al hadn't checked commit c52c2ddc1dfa ("alpha: switch osf_sigprocmask() to use of sigprocmask()") at all. It doesn't compile. Fixed as per suggestions from Michael Cree. Reported-by: Michael Cree <mcree@orcon.net.nz> Cc: Al Viro <viro@ftp.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-09-27Merge branch 'x86/urgent' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'x86/urgent' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: x86: Avoid 'constant_test_bit()' misoptimization due to cast to non-volatile
2010-09-27MN10300: Default config choice GDBSTUB_TTYSM0 should be GDBSTUB_ON_TTYSM0David Howells
The configuration choice for the port on which the GDB stub listens has a default of GDBSTUB_TTYSM0, but this should be GDBSTUB_ON_TTYSM0 to match the option. Signed-off-by: David Howells <dhowells@redhat.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-09-27Merge master.kernel.org:/home/rmk/linux-2.6-armLinus Torvalds
* master.kernel.org:/home/rmk/linux-2.6-arm: (28 commits) ARM: 6411/1: vexpress: set RAM latencies to 1 cycle for PL310 on ct-ca9x4 tile ARM: 6409/1: davinci: map sram using MT_MEMORY_NONCACHED instead of MT_DEVICE ARM: 6408/1: omap: Map only available sram memory ARM: 6407/1: mmu: Setup MT_MEMORY and MT_MEMORY_NONCACHED L1 entries ARM: pxa: remove pr_<level> uses of KERN_<level> ARM: pxa168fb: clear enable bit when not active ARM: pxa: fix cpu_is_pxa*() not expanding to zero when not configured ARM: pxa168: fix corrected reset vector ARM: pxa: Use PIO for PI2C communication on Palm27x ARM: pxa: Fix Vpac270 gpio_power for MMC ARM: 6401/1: plug a race in the alignment trap handler ARM: 6406/1: at91sam9g45: fix i2c bus speed leds: leds-ns2: fix locking ARM: dove: fix __io() definition to use bus based offset dmaengine: fix interrupt clearing for mv_xor ARM: kirkwood: Unbreak PCIe I/O port ARM: Fix build error when using KCONFIG_CONFIG ARM: 6383/1: Implement phys_mem_access_prot() to avoid attributes aliasing ARM: 6400/1: at91: fix arch_gettimeoffset fallout ARM: 6398/1: add proc info for ARM11MPCore/Cortex-A9 from ARM ...
2010-09-27Merge branch 'x86-fixes-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: x86/amd-iommu: Fix rounding-bug in __unmap_single x86/amd-iommu: Work around S3 BIOS bug x86/amd-iommu: Set iommu configuration flags in enable-loop x86, setup: Fix earlyprintk=serial,0x3f8,115200 x86, setup: Fix earlyprintk=serial,ttyS0,115200
2010-09-27Merge branch 'perf-fixes-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'perf-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: perf, x86: Catch spurious interrupts after disabling counters tracing/x86: Don't use mcount in kvmclock.c tracing/x86: Don't use mcount in pvclock.c
2010-09-27mn10300: check __get_user/__put_user results...Al Viro
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-09-27mn10300: get rid of set_fs(USER_DS) in sigframe setupAl Viro
It really has no business being there; short of a serious kernel bug we should already have USER_DS at that point. It shouldn't have been done on x86 either... Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-09-27mn10300: ->restart_block.fn needs to be reset on sigreturnAl Viro
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-09-27mn10300: prevent double syscall restartsAl Viro
set ->orig_d0 to -1, same as what sigreturn does Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-09-27mn10300: avoid SIGSEGV delivery loopAl Viro
force_sigsegv() is there for purpose... Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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