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* [ARM] 3364/1: [cleanup] warning fix - definitions for enable_hlt and disable_hltBen Dooks2006-03-15
| | | | | | | | | | | Patch from Ben Dooks The enable_hlt and disable_hlt should be declared in include/asm/setup.h. This fixes sparse errors from arch/arm/kernel/process.c Signed-off-by: Ben Dooks <ben-linux@fluff.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* [ARM] iwmmxt thread state alignmentRussell King2006-03-12
| | | | | | | | | This patch removes the reliance of iwmmxt on hand coded alignments. Since thread_info is always 8K aligned, specifying that fpstate is 8-byte aligned achieves the same effect without needing to resort to hand coded alignments. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* [ARM] 3352/1: DSB required for the completion of a TLB maintenance operationCatalin Marinas2006-03-07
| | | | | | | | | | | | | | | | Patch from Catalin Marinas Chapter B2.7.3 in the latest ARM ARM (with v6 information) states that the completion of a TLB maintenance operation is only guaranteed by the execution of a DSB (Data Syncronization Barrier, formerly Data Write Barrier or Drain Write Buffer). Note that a DSB is only needed in the flush_tlb_kernel_* functions since the completion is guaranteed by a mode change (i.e. switching back to user mode) for the flush_tlb_user_* functions. Signed-off-by: Catalin Marinas <catalin.marinas@arm.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* [ARM] 3325/2: GPIO function to control multi-drive (open collector) capabilityAndrew Victor2006-02-22
| | | | | | | | | | | | | | | | | | | Patch from Andrew Victor This patch adds the at91_set_multi_drive() function to enable/disable the multi-drive (open collector) pin capability on the AT91RM9200 processor. This is necessary to fix the UDC (USB Gadget) driver for the AT91RM9200 board as it will not allow the board reset line to be pulled low if the pullup is not driven as an open collector output as the boards are wired to the USB connector on both the DK/EK. This version of the patch updates it to 2.6.16-rc4. Orignal patch by Jeff Warren. Signed-off-by: Andrew Victor <andrew@sanpeople.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* [ARM] 3343/1: NAS100d: Fix incorrect I2C pin assignmentAlessandro Zummo2006-02-22
| | | | | | | | | | | | Patch from Alessandro Zummo The I2C pin assignment for the Iomega NAS100d board was incorrect. This patch fixes it. The correct assignment has now been tested using the new RTC class and a new driver for the RTC on the NAS100d. Signed-off-by: Rod Whitby <rod@whitby.id.au> Signed-off-by: Alessandro Zummo <a.zummo@towertech.it> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* Merge master.kernel.org:/home/rmk/linux-2.6-armLinus Torvalds2006-02-17
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| * [ARM] 3339/1: ARM EABI: make unmuxed syscalls visibleNicolas Pitre2006-02-16
| | | | | | | | | | | | | | | | | | | | | | | | | | Patch from Nicolas Pitre With EABI the multiplex sys_ipc and sys_socketcall syscalls are unavailable and their support code even removed from the compiled kernel, and the new unmuxed syscalls must be used instead. Make those syscall numbers visible. Signed-off-by: Nicolas Pitre <nico@cam.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| * [ARM] Fix SMP initialisation oopsRussell King2006-02-16
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | A change to the SMP initialisation caused the following oops: CPU1: Booted secondary processor CPU1: D VIPT write-back cache CPU1: I cache: 32768 bytes, associativity 4, 32 byte lines, 256 sets CPU1: D cache: 32768 bytes, associativity 4, 32 byte lines, 256 sets <7>Calibrating delay loop... 83.14 BogoMIPS (lpj=415744) <1>Unable to handle kernel NULL pointer dereference at virtual address 0000001c ... PC is at enqueue_task+0x1c/0x64 LR is at activate_task+0xcc/0xe4 SMP initialisation now requires cpu_possible_map to be initialised in setup_arch(). Move this from smp_prepare_cpus() to smp_init_cpus() and call it from our setup_arch() if CONFIG_SMP is enabled. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* | [PATCH] add asm-generic/mman.hMichael S. Tsirkin2006-02-15
|/ | | | | | | | | | | | | | Make new MADV_REMOVE, MADV_DONTFORK, MADV_DOFORK consistent across all arches. The idea is to make it possible to use them portably even before distros include them in libc headers. Move common flags to asm-generic/mman.h Signed-off-by: Michael S. Tsirkin <mst@mellanox.co.il> Cc: Roland Dreier <rolandd@cisco.com> Cc: Badari Pulavarty <pbadari@us.ibm.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] madvise MADV_DONTFORK/MADV_DOFORKMichael S. Tsirkin2006-02-14
| | | | | | | | | | | | | | | | | | | | | | | | Currently, copy-on-write may change the physical address of a page even if the user requested that the page is pinned in memory (either by mlock or by get_user_pages). This happens if the process forks meanwhile, and the parent writes to that page. As a result, the page is orphaned: in case of get_user_pages, the application will never see any data hardware DMA's into this page after the COW. In case of mlock'd memory, the parent is not getting the realtime/security benefits of mlock. In particular, this affects the Infiniband modules which do DMA from and into user pages all the time. This patch adds madvise options to control whether memory range is inherited across fork. Useful e.g. for when hardware is doing DMA from/into these pages. Could also be useful to an application wanting to speed up its forks by cutting large areas out of consideration. Signed-off-by: Michael S. Tsirkin <mst@mellanox.co.il> Acked-by: Hugh Dickins <hugh@veritas.com> Cc: Michael Kerrisk <mtk-manpages@gmx.net> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [ARM] 3326/1: H1940 - Control latchesBen Dooks2006-02-10
| | | | | | | | | | | Patch from Ben Dooks Define the bits for the two board control latches that control various items on the H1940 iPAQ. Signed-off-by: Ben Dooks <ben-linux@fluff.org> Signed-off-by: Arnaud Patard <arnaud.patard@rtp-net.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* [ARM] 3279/1: OMAP: 1/3 Fix low-level io initTony Lindgren2006-02-08
| | | | | | | | | | | | Patch from Tony Lindgren This patch adds the missing cache flushes to common low-level init that are needed to access the IO region. These flushes are normally done at the end of devicemaps_init(), but we need to detect the OMAP core type early. Signed-off-by: Tony Lindgren <tony@atomide.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* [ARM] 3311/1: clean up include/asm-arm/mutex.hNicolas Pitre2006-02-08
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Patch from Nicolas Pitre Since: if (unlikely(__res || __ex_flag)) produces worse code on ARM than: if (unlikely(__res | __ex_flag)) I therefore made it more explicit: __res |= __ex_flag; if (unlikely(__res != 0)) so it is not seen as a typo again. Also made everything static inline rather than macros for better readability (both produce the same code after all). And finally added missing \t from multi-line assembly code. Signed-off-by: Nicolas Pitre <nico@cam.org> Acked-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* [ARM] 3284/1: S3C2400 - adds support to GPIOLucas Correia Villa Real2006-02-01
| | | | | | | | | | | Patch from Lucas Correia Villa Real This patch adds support to GPIO on the S3C2400, which is going to be used by the GP32 machine and the SMDK2400 development board. Signed-off-by: Lucas Correia Villa Real <lucasvr@gobolinux.org> Signed-off-by: Ben Dooks <ben-linux@fluff.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* [ARM] 3292/1: Fix memory corruption in asm-arm/checksum.h: ip_fast_csum()Richard Purdie2006-02-01
| | | | | | | | | | | | | Patch from Richard Purdie ip_fast_csum() accesses memory via a pointer (iph) within an asm function. To prevent memory corruption when the function is inlined, it needs "memory" on the clobber list. This fixes ip checksum errors reported by a Zaurus user. Signed-off-by: Richard Purdie <rpurdie@rpsys.net> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* [ARM] 3269/1: Add ARMv6 MT_NONSHARED_DEVICE mem_types[] indexGeorge G. Davis2006-01-26
| | | | | | | | | | | | | Patch from George G. Davis This Freescale Semiconductor, Inc. contributed patch adds mem_types[] support for ARMv6 non-shared device memory region attributes. This implementation provides support for only first level section mapped non-shared devices. Second level non-shared device mappings are not yet supported. Signed-off-by: George G. Davis <gdavis@mvista.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* [ARM] 3266/1: S3C2400 - adds macro S3C24XXLucas Correia Villa Real2006-01-26
| | | | | | | | | | | Patch from Lucas Correia Villa Real This patch defines S3C2400 memory map and adds a S3C24XX macro for common resources between S3C2400, S3C2410 and S3C2440 cpus. Signed-off-by: Lucas Correia Villa Real <lucasvr@gobolinux.org> Signed-off-by: Ben Dooks <ben-linux@fluff.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* Merge master.kernel.org:/pub/scm/linux/kernel/git/tmlind/linux-omap-upstreamRussell King2006-01-18
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| * ARM: OMAP: 1/4 Fix clock framework to use clk_enable/disableTony Lindgren2006-01-17
| | | | | | | | | | | | | | | | | | | | This patch fixes OMAP clock framework to use clk_enable/disable instead of clk_use/unuse as specified in include/linux/clk.h. Instances of clk_use/unuse are renamed to clk_enable/disable, and references clk_use/unuse are removed. Signed-off-by: Tony Lindgren <tony@atomide.com>
* | [ARM] 3267/1: PXA27x SSP controller register definesDavid Vrabel2006-01-18
|/ | | | | | | | | Patch from David Vrabel PXA27x SSP controller has a few different registers, including SCR (serial clock rate) in SSCR0. Signed-off-by: David Vrabel <dvrabel@arcom.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* [ARM] Fix missing compiler.h includeRussell King2006-01-15
| | | | | | | | | | | | | | | | | | asm/mach/arch.h introduced a __deprecated, but didn't include compiler.h, causing: In file included from arch/arm/mach-at91rm9200/devices.c:13: include/asm/mach/arch.h:23: warning: no semicolon at end of struct or union include/asm/mach/arch.h:23: error: syntax error before 'phys_ram' include/asm/mach/arch.h:34: error: syntax error before ':' token include/asm/mach/arch.h:35: error: syntax error before ':' token include/asm/mach/arch.h:36: error: syntax error before ':' token include/asm/mach/arch.h:37: error: syntax error before ':' token include/asm/mach/arch.h:45: error: syntax error before '}' token Add the necessary include. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* [ARM] 3262/4: allow ptraced syscalls to be overridenNicolas Pitre2006-01-14
| | | | | | | | | | | | | Patch from Nicolas Pitre This is needed by strace to properly handle the tracing of some system calls. It could be useful for other applications as well. Based on an earlier patch from Daniel Jacobowitz. Signed-off-by: Nicolas Pitre <nico@cam.org> Signed-off-by: Daniel Jacobowitz <dan@debian.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* [ARM] 3110/5: old ABI compat: multi-ABI syscall entry supportNicolas Pitre2006-01-14
| | | | | | | | | | | Patch from Nicolas Pitre This patch adds the required code to support both user space ABIs at the same time. A second syscall table is created to include legacy ABI syscalls that need an ABI compat wrapper. Signed-off-by: Nicolas Pitre <nico@cam.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* [ARM] 3108/2: old ABI compat: statfs64 and fstatfs64Nicolas Pitre2006-01-14
| | | | | | | | | | | | Patch from Nicolas Pitre struct statfs64 has extra padding with EABI growing its size from 84 to 88. This struct is now __attribute__((packed,aligned(4))) with a small assembly wrapper to force the sz argument to 84 if it is 88 to avoid copying the extra padding over user space memory unexpecting it. Signed-off-by: Nicolas Pitre <nico@cam.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* [ARM] 3106/2: ARM EABI: some syscall adjustmentsNicolas Pitre2006-01-14
| | | | | | | | | | | | | Patch from Nicolas Pitre Fix a few syscalls for EABI requirements. They were sys_pread64 and sys_pwrite64 where the last argument is now entirely pushed on stack, but since commit 567bd98017d9c9f2ac1c148ddc78c062e8abd398 they don't require any fixup. Remains only the stat64 structure. Non EABI kernels are unaffected. Signed-off-by: Nicolas Pitre Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* [ARM] 3105/4: ARM EABI: new syscall entry conventionNicolas Pitre2006-01-14
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Patch from Nicolas Pitre For a while we wanted to change the way syscalls were called on ARM. Instead of encoding the syscall number in the swi instruction which requires reading back the instruction from memory to extract that number and polluting the data cache, it was decided that simply storing the syscall number into r7 would be more efficient. Since this represents an ABI change then making that change at the same time as EABI support is the right thing to do. It is now expected that EABI user space binaries put the syscall number into r7 and use "swi 0" to call the kernel. Syscall register argument are also expected to have "EABI arrangement" i.e. 64-bit arguments should be put in a pair of registers from an even register number. Example with long ftruncate64(unsigned int fd, loff_t length): legacy ABI: - put fd into r0 - put length into r1-r2 - use "swi #(0x900000 + 194)" to call the kernel new ARM EABI: - put fd into r0 - put length into r2-r3 (skipping over r1) - put 194 into r7 - use "swi 0" to call the kernel Note that it is important to use 0 for the swi argument as backward compatibility with legacy ABI user space relies on this. The syscall macros in asm-arm/unistd.h were also updated to support both ABIs and implement the right call method automatically. Signed-off-by: Nicolas Pitre <nico@cam.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* [ARM] 3102/1: ARM EABI: stack pointer must be 64-bit aligned after a CPU ↵Nicolas Pitre2006-01-14
| | | | | | | | | | | | | | | | | | | | exception Patch from Nicolas Pitre The ARM EABI says that the stack pointer has to be 64-bit aligned for reasons already mentioned in patch #3101 when calling C functions. We therefore must verify and adjust sp accordingly when taking an exception from kernel mode since sp might not necessarily be 64-bit aligned if the exception occurs in the middle of a kernel function. If the exception occurs while in user mode then no sp fixup is needed as long as sizeof(struct pt_regs) as well as any additional syscall data stack space remain multiples of 8. Signed-off-by: Nicolas Pitre <nico@cam.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* [ARM] 3101/1: ARM EABI: slab memory must be 64-bit alignedNicolas Pitre2006-01-14
| | | | | | | | | | | | | | | | | | | | Patch from Nicolas Pitre Although ARM is still using 32-bit pointers, version 5 and later versions of the ARM architecture introduced the ldrd and strd instructions to move 64-bit data which must be 64-bit aligned in memory, and the EABI includes new constraints on structure data alignment to allow for the compiler to use those instructions. This means that any slab allocation must start on a 64-bit boundary which is not equivalent to BYTES_PER_WORD, especially on those architecture versions that implements the ldrd/strd instructions. Overriding the default alignment disables some slab debug features. If those debug features are really needed then the kernel will have to be compiled for version 4 of the ARM architecture. Signed-off-by: Nicolas Pitre <nico@cam.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* [ARM] Separate VIC (vectored interrupt controller) support from VersatileRussell King2006-01-13
| | | | | | | Other machines may wish to make use of the VIC support code, so move it to arch/arm/common. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* [ARM] start_thread fixup for nommu modeHyok S. Choi2006-01-13
| | | | | | | | This patch supports start_thread in nommu mode which requires the base index register. Signed-off-by: Hyok S. Choi <hyok.choi@samsung.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* [ARM] 3260/1: remove phys_ram from struct machine_desc (part 2)Nicolas Pitre2006-01-13
| | | | | | | | | | | | Patch from Nicolas Pitre This field is redundent since it must be equal to PHYS_OFFSET anyway. Now that no code uses it anymore, mark it deprecated and remove all initializations from the tree. Signed-off-by: Nicolas Pitre <nico@cam.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* [ARM] 3257/1: ixp2000: map in scratch and sramLennert Buytenhek2006-01-13
| | | | | | | | | | | | | | Patch from Lennert Buytenhek For the ixp2000 netdev driver, we need to map in a chunk of SRAM (to store the transmit and receive descriptors) and the scratch get/put area (so that we can use the scratchpad rings in the cpu for managing the descriptors.) These are the final two mappings needed for the netdev driver and the last missing piece for the driver in mainline to work. Signed-off-by: Lennert Buytenhek <buytenh@wantstofly.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* Merge master.kernel.org:/home/rmk/linux-2.6-armLinus Torvalds2006-01-12
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| * [ARM] 3209/1: Configurable DMA-consistent memory regionKevin Hilman2006-01-12
| | | | | | | | | | | | | | | | | | Patch from Kevin Hilman This patch increase available DMA-consistent memory allocated by dma_coherent_alloc(). The default remains at 2M (defined in asm/memory.h) and each platform has the ability to override in asm/arch-foo/memory.h. Signed-off-by: Kevin Hilman <kevin@hilman.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| * [ARM] 3252/1: help gcc do the best with ___arch__swab32Nicolas Pitre2006-01-10
| | | | | | | | | | | | | | | | | | | | | | | | | | Patch from Nicolas Pitre Depending on your gcc version, the current C-only implementation would produce suboptimal code, ranging from a bad register selection forcing an additional mov instruction to a failure to merge the eor and the ror in a single instruction. With a little help gcc always produces the best code. Signed-off-by: Nicolas Pitre <nico@cam.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| * [ARM] 3242/2: AT91RM9200 support for 2.6 (Serial)Andrew Victor2006-01-10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Patch from Andrew Victor This patch adds support to the 2.6 kernel series for the Atmel AT91RM9200 processor. This patch is the Serial driver. This version uses the newly re-written GPL'ed hardware headers. Signed-off-by: Andrew Victor <andrew@sanpeople.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* | [PATCH] death of get_thread_info/put_thread_infoAl Viro2006-01-12
| | | | | | | | | | | | | | | | | | {get,put}_thread_info() were introduced in 2.5.4 and never had been called by anything in the tree. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | [PATCH] arm: task_stack_page()Al Viro2006-01-12
| | | | | | | | | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | [PATCH] arm: task_pt_regs()Al Viro2006-01-12
| | | | | | | | | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | [PATCH] arm: task_thread_info()Al Viro2006-01-12
| | | | | | | | | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | [PATCH] sched: add cacheflush() asmIngo Molnar2006-01-12
| | | | | | | | | | | | | | | | | | | | Add per-arch sched_cacheflush() which is a write-back cacheflush used by the migration-cost calibration code at bootup time. Signed-off-by: Ingo Molnar <mingo@elte.hu> Cc: Nick Piggin <nickpiggin@yahoo.com.au> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | [PATCH] Generic ioctl.hBrian Gerst2006-01-10
|/ | | | | | | | Most arches copied the i386 ioctl.h. Combine them into a generic header. Signed-off-by: Brian Gerst <bgerst@didntduck.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* Merge master.kernel.org:/pub/scm/linux/kernel/git/mingo/mutex-2.6Linus Torvalds2006-01-09
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| * [PATCH] mutex subsystem, add include/asm-arm/mutex.hNicolas Pitre2006-01-09
| | | | | | | | | | | | | | add the ARM version of mutex.h, which is optimized in assembly for ARMv6, and uses the xchg implementation on pre-ARMv6. Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * [PATCH] mutex subsystem, add atomic_xchg() to all archesIngo Molnar2006-01-09
| | | | | | | | | | | | | | add atomic_xchg() to all the architectures. Needed by the new mutex code. Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Arjan van de Ven <arjan@infradead.org>
* | [ARM] 3070/2: Add __ioremap_pfn() APIDeepak Saxena2006-01-09
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Patch from Deepak Saxena In working on adding 36-bit addressed supersection support to ioremap(), I came to the conclusion that it would be far simpler to do so by just splitting __ioremap() into a main external interface and adding an __ioremap_pfn() function that takes a pfn + offset into the page that __ioremap() can call. This way existing callers of __ioremap() won't have to change their code and 36-bit systems will just call __ioremap_pfn() and we will not have to deal with unsigned long long variables. Note that __ioremap_pfn() should _NOT_ be called directly by drivers but is reserved for use by arch_ioremap() implementations that map 32-bit resource regions into the real 36-bit address and then call this new function. Signed-off-by: Deepak Saxena <dsaxena@plexity.net> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* | Merge Linus' tree.Russell King2006-01-09
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| * [PATCH] IRQ type flagsRussell King2006-01-08
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Some ARM platforms have the ability to program the interrupt controller to detect various interrupt edges and/or levels. For some platforms, this is critical to setup correctly, particularly those which the setting is dependent on the device. Currently, ARM drivers do (eg) the following: err = request_irq(irq, ...); set_irq_type(irq, IRQT_RISING); However, if the interrupt has previously been programmed to be level sensitive (for whatever reason) then this will cause an interrupt storm. Hence, if we combine set_irq_type() with request_irq(), we can then safely set the type prior to unmasking the interrupt. The unfortunate problem is that in order to support this, these flags need to be visible outside of the ARM architecture - drivers such as smc91x need these flags and they're cross-architecture. Finally, the SA_TRIGGER_* flag passed to request_irq() should reflect the property that the device would like. The IRQ controller code should do its best to select the most appropriate supported mode. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
| * [PATCH] consolidate asm/futex.hJeff Dike2006-01-08
| | | | | | | | | | | | | | | | | | | | | | | | | | Most of the architectures have the same asm/futex.h. This consolidates them into asm-generic, with the arches including it from their own asm/futex.h. In the case of UML, this reverts the old broken futex.h and goes back to using the same one as almost everyone else. Signed-off-by: Jeff Dike <jdike@addtoit.com> Cc: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
| * [PATCH] Kill L1_CACHE_SHIFT_MAXRavikiran G Thirumalai2006-01-08
| | | | | | | | | | | | | | | | | | | | | | Kill L1_CACHE_SHIFT from all arches. Since L1_CACHE_SHIFT_MAX is not used anymore with the introduction of INTERNODE_CACHE, kill L1_CACHE_SHIFT_MAX. Signed-off-by: Ravikiran Thirumalai <kiran@scalex86.org> Signed-off-by: Shai Fultheim <shai@scalex86.org> Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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