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2007-02-12[PATCH] mark struct file_operations const 2Arjan van de Ven
Many struct file_operations in the kernel can be "const". Marking them const moves these to the .rodata section, which avoids false sharing with potential dirty data. In addition it'll catch accidental writes at compile time to these shared resources. [akpm@osdl.org: sparc64 fix] Signed-off-by: Arjan van de Ven <arjan@linux.intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-02-12[PATCH] Dynamic kernel command-line: armAlon Bar-Lev
1. Rename saved_command_line into boot_command_line. 2. Set command_line as __initdata. Signed-off-by: Alon Bar-Lev <alon.barlev@gmail.com> Cc: Russell King <rmk@arm.linux.org.uk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-02-12[PATCH] AT91 GPIO wrappersDavid Brownell
This is a first cut at making the AT91 code use the generic GPIO calls. Note that the original AT91 GPIO calls merged the "mux pin as GPIO" and "set GPIO direction" functionality into one API call, contrary to what's specified as a cross-platform portable model. So this involved a few non-inlinable functions. [akpm@osdl.org: cleanups] Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-02-11[PATCH] sort the devres mess outAl Viro
* Split the implementation-agnostic stuff in separate files. * Make sure that targets using non-default request_irq() pull kernel/irq/devres.o * Introduce new symbols (HAS_IOPORT and HAS_IOMEM) defaulting to positive; allow architectures to turn them off (we needed these symbols anyway for dependencies of quite a few drivers). * protect the ioport-related parts of lib/devres.o with CONFIG_HAS_IOPORT. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-02-11[PATCH] Consolidate default sched_clock()Alexey Dobriyan
Use attribute(weak). Signed-off-by: Alexey Dobriyan <adobriyan@openvz.org> Acked-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-02-11[PATCH] disable init/initramfs.c: architecturesJean-Paul Saman
Update all arch/*/kernel/vmlinux.lds.S to not include space for initramfs when CONFIG_BLK_DEV_INITRAMFS is not selected. This saves another 4 kbytes on most platfoms (some reserve PAGE_SIZE for initramfs). Signed-off-by: Jean-Paul Saman <jean-paul.saman@nxp.com> Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: <linux-arch@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-02-11[PATCH] Set CONFIG_ZONE_DMA for arches with GENERIC_ISA_DMAChristoph Lameter
As Andi pointed out: CONFIG_GENERIC_ISA_DMA only disables the ISA DMA channel management. Other functionality may still expect GFP_DMA to provide memory below 16M. So we need to make sure that CONFIG_ZONE_DMA is set independent of CONFIG_GENERIC_ISA_DMA. Undo the modifications to mm/Kconfig where we made ZONE_DMA dependent on GENERIC_ISA_DMA and set theses explicitly in each arches Kconfig. Reviews must occur for each arch in order to determine if ZONE_DMA can be switched off. It can only be switched off if we know that all devices supported by a platform are capable of performing DMA transfers to all of memory (Some arches already support this: uml, avr32, sh sh64, parisc and IA64/Altix). In order to switch ZONE_DMA off conditionally, one would have to establish a scheme by which one can assure that no drivers are enabled that are only capable of doing I/O to a part of memory, or one needs to provide an alternate means of performing an allocation from a specific range of memory (like provided by alloc_pages_range()) and insure that all drivers use that call. In that case the arches alloc_dma_coherent() may need to be modified to call alloc_pages_range() instead of relying on GFP_DMA. Signed-off-by: Christoph Lameter <clameter@sgi.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-02-09[APM] ARM: Convert to use shared APM emulation.Ralf Baechle
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2007-01-29[ARM] 4117/1: S3C2412: Fix writel() usage in selection codeBen Dooks
The S3C2412 DMA selection code has the arguments to writel() the wrong way around. Signed-off-by: Ben Dooks <ben-linux@fluff.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2007-01-25[ARM] 4111/1: Allow VFP to work with thread migration on SMPCatalin Marinas
The current lazy saving of the VFP registers is no longer possible with thread migration on SMP. This patch implements a per-CPU vfp-state pointer and the saving of the VFP registers at every context switch. The registers restoring is still performed in a lazy way. Signed-off-by: Catalin Marinas <catalin.marinas@arm.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2007-01-25[ARM] 4112/1: Only ioremap to supersections if DOMAIN_IO is zeroCatalin Marinas
Supersections do not have a field for the domain and it is always 0. This patch prevents the creation of supersections during ioremap when DOMAIN_IO is not zero (i.e. !defined(CONFIG_IO_36)). Signed-off-by: Catalin Marinas <catalin.marinas@arm.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2007-01-24[ARM] 4102/1: Allow for PHYS_OFFSET on any valid 2MiB addressLinus Walleij
This patchs allows the offset to the first page of physical memory to be on any 2MB boundary whereas the previous code could only handle psysical offset to any 16MB boundary (0xNN000000) or any 1MB boundary below 0x01000000 (e.g. 0x00N00000). The problem is a consequence of the orr one-byte syntax, so we fix this and we can place the first bank of memory at 0x28e00000. I have also included an explicit check that disallow compilation when PHYS_OFFSET is not on a 2MiB boundary. head.S would be the proper place to have this at since this is the first file that attempts to use PHYS_OFFSET during compile. Signed-off-by: Linus Walleij <triad@df.lth.se> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2007-01-24[ARM] 4100/1: iop3xx: fix cpu mask for iop333Dan Williams
cosmetic fix so iop333 is not reported as ixp46x iop333 cpuid = 0x69054210 Signed-off-by: Dan Williams <dan.j.williams@intel.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2007-01-24[ARM] Update mach-typesRussell King
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2007-01-24[ARM] Fix show_mem() for discontigmemRussell King
show_mem() was assuming incorrectly that the mem_map for any node started at PFN 0. This is obviously wrong; fix it to take account of node_start_pfn. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2007-01-24[ARM] 4096/1: S3C24XX: change return code form s3c2410_gpio_getcfg()Ben Dooks
The s3c2410_gpio_getcfg() currently returns a value which is dependant on the GPIO no passed in. Now we have more generic constants it is sensible to use those as return codes so that any function dealing with >1 GPIO does not need to do it's own number processing. Since this function is only currently used in pm.c, it is easy to fixup (and correct pm.c to use the generic constants) Signed-off-by: Ben Dooks <ben-linux@fluff.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2007-01-24[ARM] 4095/1: S3C24XX: Fix GPIO set for Bank ABen Dooks
GPIO bank A can only be output or a special function, and the regs-gpio.h header has mistakenly got this as input or output. The mistake is carried on into the gpio.c s3c2410_gpio_cfgpin() call which will set the wrong value if S3C2410_GPIO_OUTPUT is passed. Signed-off-by: Ben Dooks <ben-linux@fluff.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2007-01-24[ARM] 4092/1: i.MX/MX1 CPU Frequency scaling latency definitionPavel Pisa
The transition latency has to be defined and reasonably small to allow on-demand and conservative governors. The value has been defined according to manual. The imx_set_target() protected against seen out of range requests now. Signed-off-by: Pavel Pisa <pisa@cmp.felk.cvut.cz> Acked-by: Sascha Hauer <s.hauer@pengutronix.de> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2007-01-24[ARM] 4089/1: AT91: GPIO wake IRQ cleanupAndrew Victor
Cleanup of at91 platform level gpio wake and suspend/resume logic. The GPIO core now delegates wakeups to the parent AIC by refcounting, and delegates clock management to the clock API. This makes these system modules more independent of each other, which is cleaner and will also help with the AT91SAM9263 (where some GPIO controllers share the same irq and clock). Original patch by David Brownell. Signed-off-by: Andrew Victor <andrew@sanpeople.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2007-01-24[ARM] 4087/1: AT91: CPU reset for SAM9x processorsAndrew Victor
This patch implements CPU and peripheral reset on AT91SAM9260 and AT91SAM9261. Original patch from Wojtek Kaniewski. Signed-off-by: Andrew Victor <andrew@sanpeople.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2007-01-24[ARM] 4086/1: AT91: Whitespace cleanupAndrew Victor
A couple of whitespace cleanups, mainly in the AT91 header files. Signed-off-by: Andrew Victor <andrew@sanpeople.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2007-01-24[ARM] 4084/1: Remove CONFIG_DEBUG_WAITQAndrew Victor
Remove the legacy CONFIG_DEBUG_WAITQ from the SAM9260-EK and SAM9261-EK default configuration files. Signed-off-by: Andrew Victor <andrew@sanpeople.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2007-01-08[ARM] Provide basic printk_clock() implementationRussell King
Current sched_clock() implementations on ARM cause unbootable kernels with PRINTK_TIME support enabled. To avoid this, provide a basic printk_clock() implementation which avoids sched_clock() being called before the page tables have been set up. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2007-01-08[ARM] Resolve fuse and direct-IO failures due to missing cache flushesRussell King
fuse does not work on ARM due to cache incoherency issues - fuse wants to use get_user_pages() to copy data from the current process into kernel space. However, since this accesses userspace via the kernel mapping, the kernel mapping can be out of date wrt data written to userspace. This can lead to unpredictable behaviour (in the case of fuse) or data corruption for direct-IO. This resolves debian bug #402876 Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2007-01-06[ARM] Fix kernel-mode undefined instruction abortsRussell King
If the kernel attempts to execute a CP1 or CP2 instruction and it aborts, and a FP emulator is not loaded, we try to return as if to a user context, instead of the proper kernel context. Since the fault came from kernel mode, we must use the kernel return paths. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2007-01-06[ARM] 4070/1: arch/arm/kernel: fix warnings from missing includesBen Dooks
Include <asm/io.h> to fix the warning: arch/arm/kernel/traps.c:647:6: warning: symbol '__readwrite_bug' was not declared. Should it be static? Include <linux/mc146818rtc.h> to fix the warning: arch/arm/kernel/time.c:42:1: warning: symbol 'rtc_lock' was not declared. Should it be static? Signed-off-by: Ben Dooks <ben-linux@fluff.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2007-01-02Merge branch 'for-linus' of master.kernel.org:/home/rmk/linux-2.6-armLinus Torvalds
* 'for-linus' of master.kernel.org:/home/rmk/linux-2.6-arm: [ARM] 4081/1: Add definition for TI Sync Serial Protocol [ARM] 4080/1: Fix for the SSCR0_SlotsPerFrm macro [ARM] Fix VFP initialisation issue for SMP systems [ARM] 4078/1: Fix ARM copypage cache coherency problems [ARM] 4077/1: iop13xx: fix __io() macro [ARM] 4074/1: Flat loader stack alignment [ARM] 4073/1: Prevent s3c24xx drivers from including asm/arch/hardware.h and asm/arch/irqs.h [ARM] 4071/1: S3C24XX: Documentation update [ARM] 4066/1: correct a comment about PXA's sched_clock range [ARM] 4065/1: S3C24XX: dma printk fixes [ARM] 4064/1: make pxa_get_cycles() static [ARM] 4063/1: ep93xx: fix IRQ_EP93XX_GPIO?MUX numbering
2007-01-02[ARM] Fix VFP initialisation issue for SMP systemsRussell King
When we install the handlers for context switching, we must enable VFP on all CPU cores, otherwise undefined (and random) effects occur. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-12-30[PATCH] ARM: OMAP: fix missing header on apollon boardKyungmin Park
Fix apollon board compiler error Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by: Tony Lindgren <tony@atomide.com> Cc: Russell King <rmk@arm.linux.org.uk> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-12-30[PATCH] ARM: OMAP: fix GPMC compiler errorsKyungmin Park
Fix GPMC compiler errors on OMAP2 Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by: Tony Lindgren <tony@atomide.com> Cc: Russell King <rmk@arm.linux.org.uk> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-12-30[ARM] 4078/1: Fix ARM copypage cache coherency problemsRichard Purdie
If PG_dcache_dirty is set for a page, we need to flush the source page before performing any copypage operation using a different virtual address. This fixes the copypage implementations for XScale, StrongARM and ARMv6. This patch fixes segmentation faults seen in the dynamic linker under the usage patterns in glibc 2.4/2.5. Signed-off-by: Richard Purdie <rpurdie@rpsys.net> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-12-30[ARM] 4077/1: iop13xx: fix __io() macroDan Williams
Since iop13xx defines the PCI I/O spaces with physical resource addresses the __io macro needs to perform the physical to virtual conversion. I incorrectly assumed that this would be handled by ioremap, but drivers (like e1000) directly dereference the address returned from __io. Signed-off-by: Dan Williams <dan.j.williams@intel.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-12-30[ARM] 4066/1: correct a comment about PXA's sched_clock rangeNicolas Pitre
Signed-off-by: Nicolas Pitre <nico@cam.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-12-30[ARM] 4065/1: S3C24XX: dma printk fixesArnaud Patard
The commit 505788cccbb96cd496b646594c8a5fcdc26bc2d9 in linus kernel tree introduced some printks (for debugging ?) which are flooding the logs on my h1940. This patch replace them with pr_debug calls. Signed-off-by: Arnaud Patard <arnaud.patard@rtp-net.org> Signed-off-by: Ben Dooks <ben-linux@fluff.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-12-30[ARM] 4064/1: make pxa_get_cycles() staticNicolas Pitre
... and fix a comment as well. Signed-off-by: Nicolas Pitre <nico@cam.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-12-19[ARM] 4062/1: S3C24XX: Anubis and Osiris shuld have CONFIG_PM_SIMTECBen Dooks
Both CONFIG_MACH_OSIRIS and CONFIG_MACH_ANUBIS should select CONFIG_PM_SIMTEC. This patch moves the selection of CONFIG_PM_SIMTEC to the machines that require it, as currently done with other machines in the S3C2410 architecture. Signed-off-by: Ben Dooks <ben-linux@fluff.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-12-19[ARM] 4060/1: update several ARM defconfigsLennert Buytenhek
Update the ep93xx, iop13xx, iop32x, iop33x, ixp2000, ixp23xx, lpd270 and onearm defconfigs to 2.6.20-rc1. Signed-off-by: Lennert Buytenhek <buytenh@wantstofly.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-12-19[ARM] 4061/1: xsc3: change of maintainerLennert Buytenhek
Deepak Saxena has agreed to hand xsc3 maintainership over to me. Signed-off-by: Lennert Buytenhek <buytenh@wantstofly.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-12-19[ARM] 4059/1: VR1000: fix LED3's platform device numberBen Dooks
LED 3 should have been registered with the platform deviceid of 3, instead of 1 (which was used for LED 1). Signed-off-by: Ben Dooks <ben-linux@fluff.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-12-19[ARM] 4022/1: iop13xx: generic irq fixupsDan Williams
* use irq_chip * use handle_level_irq Signed-off-by: Dan Williams <dan.j.williams@intel.com> Signed-off-by: Lennert Buytenhek <buytenh@wantstofly.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-12-18[ARM] 4015/1: s3c2410 cpu ifdefsKrzysztof Helt
The patch adds ifdefs around per cpu definitions. Otherwise, if not all cpu types are selected, the kernel does not link. Signed-off-by: Krzysztof Helt <krzysztof.h1@wp.pl> Signed-off-by: Ben Dooks <ben-linux@fluff.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-12-18[ARM] 4056/1: iop13xx: fix resource.end off-by-one in flash setupLennert Buytenhek
The struct resource 'end' field is inclusive, the iop13xx flash setup code got this wrong. Signed-off-by: Lennert Buytenhek <buytenh@wantstofly.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-12-18[ARM] 4055/1: iop13xx: fix phys_io/io_pg_offst for iq81340mc/scLennert Buytenhek
The phys_io/io_pg_offst machine record variables were being set to bogus values, causing problems when enabling DEBUG_LL. Signed-off-by: Lennert Buytenhek <buytenh@wantstofly.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-12-18[ARM] 4054/1: ep93xx: add HWCAP_CRUNCHLennert Buytenhek
Add HWCAP_CRUNCH so that the dynamic linker knows whether it can use Crunch-optimised libraries or not. Signed-off-by: Lennert Buytenhek <buytenh@wantstofly.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-12-18[ARM] 4052/1: S3C24XX: Fix PM in arch/arm/mach-s3c2410/KconfigBen Dooks
Fix up the CONFIG_PM mixups in arch/arm/mach-s3c2410/Kconfig causing CONFIG_S3C2410_PM and CONFIG_PM_H1940 to get enabled permanently. Signed-off-by: Ben Dooks <ben-linux@fluff.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-12-18[ARM] Fix warnings from asm/system.hRussell King
Move adjust_cr() into arch/arm/mm/mmu.c, and move irqflags.h to a more appropriate place in the header file. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-12-17[ARM] 4051/1: S3C24XX: clean includes in S3C2440 and S3C2442 supportBen Dooks
Clean the includes in arch/arm/mach-s3c2410/s3c2440.c and arch/arm/mach-s3c2410/s3c2442.c which should have been pruned when these where split and updated. Signed-off-by: Ben Dooks <ben-linux@fluff.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-12-17[ARM] 4050/1: S3C24XX: remove old changelogs in arch/arm/mach-s3c2410Ben Dooks
Remove old changelog entries in arch/arm/mach-s3c2410 which should be available from the version control system. Signed-off-by: Ben Dooks <ben-linux@fluff.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-12-17[ARM] 4049/1: S3C24XX: fix sparse warning due to upf_t in regs-serial.hBen Dooks
Change the include/asm-arm/arch-s3c2410/regs-serial.h platform data to use the prorper type (upf_t) for the uart_flags. Fix all the other parts of arch/arm/mach-s3c2410 to include <linux/serial_core.h> and all other uses of the include file. mach-rx3715.c:101:18: warning: incorrect type in initializer (different base types) mach-rx3715.c:101:18: expected unsigned long [unsigned] uart_flags mach-rx3715.c:101:18: got restricted unsigned int [usertype] [force] <noident> Signed-off-by: Ben Dooks <ben-linux@fluff.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-12-17[ARM] 4048/1: S3C24XX: make s3c2410_pm_resume() staticBen Dooks
Remove warning from s3c2410_pm_resume() not being declared by making it static. Signed-off-by: Ben Dooks <ben-linux@fluff.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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