- 25 Sep, 2009 40 commits
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Bjorn Helgaas authored
acpi_bus_scan() traverses the namespace to enumerate devices and uses acpi_add_single_object() to create acpi_devices. When the platform notifies us of a hot-plug event, we need to traverse part of the namespace again to figure out what appeared or disappeared. (We don't yet call acpi_bus_scan() during hot-plug, but I plan to do that in the future.) This patch makes acpi_add_single_object() notice when we already have an acpi_device, so we don't need to make a new one. Signed-off-by:
Bjorn Helgaas <bjorn.helgaas@hp.com> Signed-off-by:
Len Brown <len.brown@intel.com>
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Bjorn Helgaas authored
This patch adds acpi_bus_type_and_status(), which determines the type of the object and whether we want to build an acpi_device for it. If it is acpi_device-worthy, it returns the type and the device's current status. Signed-off-by:
Bjorn Helgaas <bjorn.helgaas@hp.com> Signed-off-by:
Len Brown <len.brown@intel.com>
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Bjorn Helgaas authored
Add acpi_bus_get_status_handle() so we can get the status of a namespace object before building a struct acpi_device. This removes a use of "device->flags.dynamic_status", a cached indicator of whether _STA exists. It seems simpler and more reliable to just evaluate _STA and catch AE_NOT_FOUND errors. Signed-off-by:
Bjorn Helgaas <bjorn.helgaas@hp.com> Signed-off-by:
Len Brown <len.brown@intel.com>
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Bjorn Helgaas authored
acpi_bus_scan() currently walks the namespace manually. This patch changes it to use acpi_walk_namespace() instead. Besides removing some complicated code, this means we take advantage of the namespace locking done by acpi_walk_namespace(). The locking isn't so important at boot-time, but I hope to eventually use this same path to handle hot-addition of devices, when it will be important. Note that acpi_walk_namespace() does not actually visit the starting node first, so we need to do that by hand first. Signed-off-by:
Bjorn Helgaas <bjorn.helgaas@hp.com> Signed-off-by:
Len Brown <len.brown@intel.com>
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Bjorn Helgaas authored
We can identify the root of the ACPI device tree by the fact that it has no parent. This is simpler than passing around ACPI_BUS_TYPE_SYSTEM and will help remove special treatment of the device tree root. Currently, we add the root by hand with ACPI_BUS_TYPE_SYSTEM. If we traverse the tree treating the root as just another device and use acpi_get_type(), the root shows up as ACPI_TYPE_DEVICE. Signed-off-by:
Bjorn Helgaas <bjorn.helgaas@hp.com> Signed-off-by:
Len Brown <len.brown@intel.com>
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Bjorn Helgaas authored
This patch changes the order so we enumerate in the "root, namespace, functional fixed" order instead of the "root, functional fixed, namespace" order. When I change acpi_bus_scan() to use acpi_walk_namespace(), it will use the former order, so this patch isolates the order change for bisectability. Signed-off-by:
Bjorn Helgaas <bjorn.helgaas@hp.com> Signed-off-by:
Len Brown <len.brown@intel.com>
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Bjorn Helgaas authored
This patch changes acpi_bus_scan() to take an acpi_handle rather than an acpi_device pointer. I plan to use acpi_bus_scan() in the hotplug path, and I'd rather not assume that notifications only go to nodes that already have acpi_devices. This will also help remove the special case for adding the root node. We currently add the root by hand before acpi_bus_scan(), but using a handle here means we can start the acpi_bus_scan() directly with the root even though it doesn't have an acpi_device yet. Note that acpi_bus_scan() currently adds and/or starts the *children* of its device argument. It doesn't do anything with the device itself. Signed-off-by:
Bjorn Helgaas <bjorn.helgaas@hp.com> Signed-off-by:
Len Brown <len.brown@intel.com>
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Bjorn Helgaas authored
This patch adds acpi_bus_get_parent(), which ascends the namespace until it finds a parent with an acpi_device. Then we use acpi_bus_get_parent() in acpi_add_single_object(), so callers don't have to figure out or keep track of the parent acpi_device. Signed-off-by:
Bjorn Helgaas <bjorn.helgaas@hp.com> Signed-off-by:
Len Brown <len.brown@intel.com>
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Bjorn Helgaas authored
acpi_add_single_object() is static, and all callers supply a valid "child" argument, so we don't need to check it. This patch also remove some unnecessary initializations. Signed-off-by:
Bjorn Helgaas <bjorn.helgaas@hp.com> Signed-off-by:
Len Brown <len.brown@intel.com>
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Bjorn Helgaas authored
We now save the ACPI bus "device_type" in the acpi_device structure, so we don't need to pass it around explicitly anymore. Signed-off-by:
Bjorn Helgaas <bjorn.helgaas@hp.com> Signed-off-by:
Len Brown <len.brown@intel.com>
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Bjorn Helgaas authored
We only pass the "type" to acpi_device_set_context() so we know whether the device has a handle to which we can attach the acpi_device pointer. But it's safer to just check for the handle directly, since it's in the acpi_device already. Signed-off-by:
Bjorn Helgaas <bjorn.helgaas@hp.com> Signed-off-by:
Len Brown <len.brown@intel.com>
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Bjorn Helgaas authored
Check the acpi_device device_type rather than the HID. Signed-off-by:
Bjorn Helgaas <bjorn.helgaas@hp.com> Signed-off-by:
Len Brown <len.brown@intel.com>
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Bjorn Helgaas authored
Most uses of the ACPI bus device_type (ACPI_BUS_TYPE_DEVICE, ACPI_BUS_TYPE_POWER, etc) are during device initialization, but we do need it later for notify handler installation, since that is different for fixed hardware devices vs. namespace devices. This patch saves the device_type in the acpi_device structure, so we can check that rather than comparing against the _HID string. Signed-off-by:
Bjorn Helgaas <bjorn.helgaas@hp.com> Signed-off-by:
Len Brown <len.brown@intel.com>
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Bjorn Helgaas authored
In several cases, functions take handle and parent device pointers in addition to acpi_device pointers. But the acpi_device structure contains both the handle and the parent pointer, so it's pointless and error-prone to pass them all. This patch removes the unnecessary "handle" and "parent" arguments. Signed-off-by:
Bjorn Helgaas <bjorn.helgaas@hp.com> Signed-off-by:
Len Brown <len.brown@intel.com>
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Bjorn Helgaas authored
We never use the "root" argument, so just remove it. Signed-off-by:
Bjorn Helgaas <bjorn.helgaas@hp.com> Signed-off-by:
Len Brown <len.brown@intel.com>
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Bjorn Helgaas authored
Add debug output for adding an ACPI device. Enable this with "acpi.debug_layer=0x00010000" (ACPI_BUS_COMPONENT). Signed-off-by:
Bjorn Helgaas <bjorn.helgaas@hp.com> Signed-off-by:
Len Brown <len.brown@intel.com>
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Bjorn Helgaas authored
Commit 15b8dd53 changed info->hardware_id from a static array to a pointer. If hardware_id is non-NULL, it points to a NULL-terminated string, so we don't need to terminate it explicitly. However, it may be NULL; in that case, we *can't* add a NULL terminator. This causes a NULL pointer dereference oops for devices without _HID. Signed-off-by:
Bjorn Helgaas <bjorn.helgaas@hp.com> CC: Lin Ming <ming.m.lin@intel.com> CC: Bob Moore <robert.moore@intel.com> CC: Gary Hade <garyhade@us.ibm.com> Signed-off-by:
Len Brown <len.brown@intel.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-2.6Linus Torvalds authored
* git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-2.6: sh_mobile_ceu_camera: fix compile breakage, caused by a bad merge sh: Add support DMA Engine to SH7780 sh: Add support DMA Engine to SH7722 sh: enable onenand support in kfr2r09 defconfig. sh: update defconfigs. sh: add FSI driver support for ms7724se sh: Fix up uninitialized variable use caught by gcc 4.4. sh: Handle unaligned 16-bit instructions on SH-2A. sh: mach-ecovec24: Add active low setting for sh_eth sh: includecheck fix: dwarf.c
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git://git.kernel.org/pub/scm/linux/kernel/git/wim/linux-2.6-watchdogLinus Torvalds authored
* git://git.kernel.org/pub/scm/linux/kernel/git/wim/linux-2.6-watchdog: [WATCHDOG] Add support for the Avionic Design Xanthos watchdog timer.
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git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6Linus Torvalds authored
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6: (94 commits) genetlink: fix netns vs. netlink table locking (2) 3c59x: Get rid of "Trying to free already-free IRQ" tunnel: eliminate recursion field ems_pci: fix size of CAN controllers BAR mapping for CPC-PCI v2 net: fix htmldocs sunrpc, clnt.c Phonet: error on broadcast sending (unimplemented) Phonet: fix race for port number in concurrent bind() pktgen: better scheduler friendliness pktgen: T_TERMINATE flag is unused ipv4: check optlen for IP_MULTICAST_IF option ath9k: Initialize txgain and rxgain for newer AR9287 chipsets. iwlagn: fix panic in iwl{5000,4965}_rx_reply_tx ath9k: Fix RFKILL bugs drivers/net/wireless: Use usb_endpoint_dir_out cfg80211: don't overwrite privacy setting wl12xx: fix kconfig/link errors rt2x00: fix the definition of rt2x00crypto_rx_insert_iv iwlwifi: reduce noise when skb allocation fails iwlwifi: do not send sync command while holding spinlock mac80211: fix DTIM setting ...
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Thierry Reding authored
This patch adds support for the watchdog timer on Avionic Design Xanthos boards. Signed-off-by:
Thierry Reding <thierry.reding@avionic-design.de> Acked-by:
Russell King <rmk+kernel@arm.linux.org.uk> Signed-off-by:
Wim Van Sebroeck <wim@iguana.be>
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Guennadi Liakhovetski authored
Signed-off-by:
Guennadi Liakhovetski <g.liakhovetski@gmx.de> Acked-by:
Mauro Carvalho Chehab <mchehab@redhat.com> Signed-off-by:
Paul Mundt <lethal@linux-sh.org>
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Nobuhiro Iwamatsu authored
Signed-off-by:
Nobuhiro Iwamatsu <iwamatsu.nobuhiro@renesas.com> Signed-off-by:
Paul Mundt <lethal@linux-sh.org>
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Nobuhiro Iwamatsu authored
Signed-off-by:
Nobuhiro Iwamatsu <iwamatsu.nobuhiro@renesas.com> Signed-off-by:
Paul Mundt <lethal@linux-sh.org>
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Paul Mundt authored
Signed-off-by:
Paul Mundt <lethal@linux-sh.org>
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Paul Mundt authored
Signed-off-by:
Paul Mundt <lethal@linux-sh.org>
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Kuninori Morimoto authored
Signed-off-by:
Kuninori Morimoto <morimoto.kuninori@renesas.com> Acked-by:
Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by:
Paul Mundt <lethal@linux-sh.org>
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git://www.linux-m32r.org/git/takata/linux-2.6_devLinus Torvalds authored
* 'for-linus' of git://www.linux-m32r.org/git/takata/linux-2.6_dev: m32r: Cleanup linker script using new linker script macros. m32r: Move the spi_stack_top and spu_stack_top into .init.data section. m32r: Remove unused .altinstructions and .exit.* code from linker script. m32r: Move GET_THREAD_INFO definition out of asm/thread_info.h. m32r: Define THREAD_SIZE only once. m32r: make PAGE_SIZE available to assembly.
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git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpcLinus Torvalds authored
* 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc: Fix build of cpm_uart due to core changes powerpc/8xx: Fix regression introduced by cache coherency rewrite powerpc/4xx: Fix erroneous xmon warning on PowerPC 4xx powerpc/mm: Fix 40x and 8xx vs. _PAGE_SPECIAL powerpc: Cleanup linker script using new linker script macros. powerpc: Fix ibm,client-architecture-support printout powerpc: Increase NODES_SHIFT on 64bit from 4 to 8 powerpc/perf_counter: Fix vdso detection powerpc: Move 64bit heap above 1TB on machines with 1TB segments powerpc: Change archdata dma_data to a union powerpc: Rename get_dma_direct_offset get_dma_offset powerpc/mm: Remove duplicated #include powerpc/book3e-64: Remove duplicated #include powerpc: Check for unsupported relocs when using CONFIG_RELOCATABLE powerpc/pmc: Don't access lppaca on Book3E powerpc: kmalloc failure ignored in vio_build_iommu_table() hvc_console: Provide (un)locked version for hvc_resize()
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David Howells authored
Ignore the address parameter given to NOMMU mmap() as it is a hint, rather than giving an error if it's non-zero. MAP_FIXED still gets an error. Signed-off-by:
David Howells <dhowells@redhat.com> Signed-off-by:
Linus Torvalds <torvalds@linux-foundation.org>
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David Howells authored
The NOMMU fallback for is_vmalloc_or_module_addr() should be static inline, not just static, in linux/mm.h. Signed-off-by:
David Howells <dhowells@redhat.com> Signed-off-by:
Linus Torvalds <torvalds@linux-foundation.org>
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David Howells authored
Fix MAP_PRIVATE mmap() of files and devices where the data in the backing store might be mapped directly. Use the BDI_CAP_MAP_DIRECT capability flag to govern whether or not we should be trying to map a file directly. This can be used to determine whether or not a region has been filled in at the point where we call do_mmap_shared() or do_mmap_private(). The BDI_CAP_MAP_DIRECT capability flag is cleared by validate_mmap_request() if there's any reason we can't use it. It's also cleared in do_mmap_pgoff() if f_op->get_unmapped_area() fails. Without this fix, attempting to run a program from a RomFS image on a non-mappable MTD partition results in a BUG as the kernel attempts XIP, and this can be caught in gdb: Program received signal SIGABRT, Aborted. 0xc005dce8 in add_nommu_region (region=<value optimized out>) at mm/nommu.c:547 (gdb) bt #0 0xc005dce8 in add_nommu_region (region=<value optimized out>) at mm/nommu.c:547 #1 0xc005f168 in do_mmap_pgoff (file=0xc31a6620, addr=<value optimized out>, len=3808, prot=3, flags=6146, pgoff=0) at mm/nommu.c:1373 #2 0xc00a96b8 in elf_fdpic_map_file (params=0xc33fbbec, file=0xc31a6620, mm=0xc31bef60, what=0xc0213144 "executable") at mm.h:1145 #3 0xc00aa8b4 in load_elf_fdpic_binary (bprm=0xc316cb00, regs=<value optimized out>) at fs/binfmt_elf_fdpic.c:343 #4 0xc006b588 in search_binary_handler (bprm=0x6, regs=0xc33fbce0) at fs/exec.c:1234 #5 0xc006c648 in do_execve (filename=<value optimized out>, argv=0xc3ad14cc, envp=0xc3ad1460, regs=0xc33fbce0) at fs/exec.c:1356 #6 0xc0008cf0 in sys_execve (name=<value optimized out>, argv=0xc3ad14cc, envp=0xc3ad1460) at arch/frv/kernel/process.c:263 #7 0xc00075dc in __syscall_call () at arch/frv/kernel/entry.S:897 Note that this fix does the following commit differently: commit a190887b Author: David Howells <dhowells@redhat.com> Date: Sat Sep 5 11:17:07 2009 -0700 nommu: fix error handling in do_mmap_pgoff() Reported-by:
Graff Yang <graff.yang@gmail.com> Signed-off-by:
David Howells <dhowells@redhat.com> Acked-by:
Pekka Enberg <penberg@cs.helsinki.fi> Cc: Paul Mundt <lethal@linux-sh.org> Cc: Mel Gorman <mel@csn.ul.ie> Cc: Greg Ungerer <gerg@snapgear.com> Signed-off-by:
Linus Torvalds <torvalds@linux-foundation.org>
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David Howells authored
Flash mappings for the MB93090-MB00 evaluation motherboard. Signed-off-by:
David Howells <dhowells@redhat.com> Signed-off-by:
Linus Torvalds <torvalds@linux-foundation.org>
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Geoffrey Thomas authored
Note that .data.page_aligned and .data.cacheline_aligned are now after _data; it was probably a bug that they were before it. Also, some explicit ALIGN(8)'s between various initcall sections were removed; this should be harmless as the implicit alignment of initcall_t was already 8. Signed-off-by:
Geoffrey Thomas <geofft@ksplice.com> Signed-off-by:
Tim Abbott <tabbott@ksplice.com> Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru> Cc: Sam Ravnborg <sam@ravnborg.org> Signed-off-by:
Richard Henderson <rth@twiddle.net> Signed-off-by:
Linus Torvalds <torvalds@linux-foundation.org>
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Tim Abbott authored
alpha is the only architecture that uses the section name .data.init_thread instead of .data.init_task. So convert alpha to use .data.init_task like everything else. .data.init_task does not need a separate output section; this change also moves it into the .data output section. Signed-off-by:
Tim Abbott <tabbott@mit.edu> Cc: Richard Henderson <rth@twiddle.net> Cc: linux-alpha@vger.kernel.org Signed-off-by:
Linus Torvalds <torvalds@linux-foundation.org>
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Tim Abbott authored
Signed-off-by:
Tim Abbott <tabbott@ksplice.com> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Paul Mackerras <paulus@samba.org> Cc: linuxppc-dev@ozlabs.org Acked-by:
Sam Ravnborg <sam@ravnborg.org> Signed-off-by:
Linus Torvalds <torvalds@linux-foundation.org>
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Tim Abbott authored
Signed-off-by:
Tim Abbott <tabbott@ksplice.com> Cc: Bryan Wu <cooloney@kernel.org> Cc: uclinux-dist-devel@blackfin.uclinux.org Acked-by:
Sam Ravnborg <sam@ravnborg.org> Signed-off-by:
Mike Frysinger <vapier.adi@gmail.com> Signed-off-by:
Linus Torvalds <torvalds@linux-foundation.org>
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Tim Abbott authored
Signed-off-by:
Tim Abbott <tabbott@ksplice.com> Acked-by:
Sam Ravnborg <sam@ravnborg.org> Signed-off-by:
Linus Torvalds <torvalds@linux-foundation.org>
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Tim Abbott authored
Signed-off-by:
Tim Abbott <tabbott@ksplice.com> Cc: Yoshinori Sato <ysato@users.sourceforge.jp> Acked-by:
Sam Ravnborg <sam@ravnborg.org> Signed-off-by:
Linus Torvalds <torvalds@linux-foundation.org>
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